| Step Down Switching Regulator | ||||||
| NON-SYNCHRONOUS | ||||||
| Part No. | Features | VIN(Range)(V) | VFB(V) | IQ(mA) | ISTBY(uA) | Package |
| IOUT(A) | η(％) | |||||
| P2520 | 2.0A 340kHz, 20V Step Down Converter | 7.0V~20V | 1.293V | 700uA | 8uA | HSOP-8 |
| 2.0A | Up to 95% | |||||
| P3586 | 3.0A
1.2MHz , PWM Step-down Switching Regulator * 10μA Shutdown Supply Current * Frequency fold back at Short Circuit * Protection Circuits: UVLO, Thermal Shutdown, OCP *Low ESR Output Capacitor Application. |
3.6V~20V | 0.8V | 3.0mA | 10uA | SOP-8 |
| 3.0A | Up to 92% | |||||
| P1596 | 1.5A
150KHz, PWM Step-down Switching Regulator * Voltage mode non-synchronous PWM control * Thermal-shutdown and current-limit protection * Low power standby mode * Internal current and thermal limit * Built-in switching transistor on chip |
4.5V~22V | 1.23V(Adj) 2.5V,3.3V, 5.0V,12.0V(Fixed) |
5.0mA | 70uA | TO-220B
TO-220-5 TO-263-5 HSOP-8 |
| 1.5A | Up to 90% | |||||
| P1785 | 2.0A
300KHz, PWM Step-down Switching Regulator with Internal OCSET * Soft-start, Current Limit, Enable function * Thermal Shutdown function * Built-in internal SW P-channel MOS * Duty ratio: 0% to 100% PWM control |
3.6V~23V | 0.8V | - | 10uA | SOP-8 |
| 2.0A | Up to 95% | |||||
| P1885 | 2.0A
300KHz, PWM Step-down Switching Regulator * Soft-start, Current Limit, Enable function * Thermal Shutdown function * Built-in internal SW P-channel MOS * Duty ratio: 0% to 100% PWM control |
3.6V~23V | 0.8V | - | 10uA | SOP-8 |
| 2.0A | Up to 95% | |||||
| P1786 | 3,0A
300KHz, PWM Step-down Switching Regulator with external OCSET * Duty ratio: 0% to 100% PWM control * Soft-start, current limit, enable function * Thermal shutdown function * Built-in internal SW P-channel MOS |
4.0V~23V | 0.8V | - | 10uA | SOP-8 |
| 3.0A | Up to 95% | |||||
| P1886 | 3,0A
300KHz, PWM Step-down Switching Regulator Internal Frequency Compensation With Fewer Component Count * Soft-start, Current Limit, Enable function * Thermal Shutdown function * Built-in internal SW P-channel MOS * Duty ratio: 0% to 100% PWM control |
4.0V~23V | 0.8V | - | 10uA | SOP-8 HSOP-8 |
| 3.0A | Up to 95% | |||||
| P1888 | 3,0A
300KHz, PWM Step-down Switching Regulator * Soft-start, Current Limit, Enable function * Thermal Shutdown function * Built-in internal SW P-channel MOS * Duty ratio: 0% to 100% PWM control |
4.0V~23V | 1.28V | - | 10uA | SOP-8 |
| 3.0A | Up to 88% | |||||
| UD24121 | 1.4MHz, 1.2A STEP-DOWN CONVERTER * 0.35Ω Internal Power MOSFET Switch * Stable with Low ESR Output Ceramic Capacitors * Up to 92% Efficiency * 0.1μA Shutdown Mode * Thermal Shutdown * Cycle-by-Cycle Over Current Protection |
4.5V~24V | 0.81V | 0.8mA | 3uA | SOT-26 |
| 1.2A | Up to 92% | |||||
| UD24203* | * Wide 4.5V to 24V Operating Input Range * 2A Load Current * 100mΩ /50mΩ Low Rds(on) Internal Power MOSFETs * Low Quiescent Current * High Efficiency Synchronous Mode Operation * Fixed 500kHz Switching Frequency * Frequency Sync from 200kHz to 2MHz External Clock * AAM Power Save Mode * Internal Soft Start * OCP Protection and Hiccup * Thermal Shutdown * Output Adjustable from 0.8V |
4.5V~24V | 0.788V | 1mA | 1uA | HSOP-8 |
| 2.0A | - | |||||
| UD24202* | * 2A Peak Output Current * 0.35Ω Internal Power MOSFET Switch * Stable with Low ESR Output Ceramic Capacitors * Up to 92% Efficiency * 0.1μA Shutdown Mode * Fixed 1.4MHz Frequency * Thermal Shutdown * Cycle-by-Cycle Over Current Protection * Wide 4.5V to 24V Operating Input Range * Output Adjustable from 0.83V to 5.81V |
4.5V~24V | 0.81V | 0.8mA | 1uA | SOT-26 |
| 2A | Up to 92% | |||||
| P1595 | 1.5A
200KHz, PWM Step-down Switching Regulator * Output Voltage In Adjustable Output Version. * Short Circuit Protect * On/Off Shutdown Control Input. * Voltage Mode Non-Synchronous Pulse Width Modulation (PWM) Control. |
4.5V~24V | 0.75V | 4.0mA | 2uA | SOT-89-5 |
| 1.5A | Up to 85% | |||||
| P1696 | 2.0A
200KHz, PWM Step-down Switching Regulator *Low power standby mode *Internal OCP and OTP |
4.5V~24V | 1.23V(Adj) 2.5V,3.3V, 5.0V,12.0V(Fixed) |
5.0mA | 80uA | SOP-8 HSOP-8 |
| 2.0A | Up to 90% | |||||
| P1583 | 2.5A
380KHz, PWM Step-down Switching Regulator * Frequency foldback at short circuit * Thermal shutdown * Under voltage lock output * Current mode with low ESR output ceramic capacitors * Up to 90% efficiency |
24V | 1.222V | 2mA | 36uA | HSOP-8 |
| 2.5A | Up to 90% | |||||
| P1586 | 1.5A 1.25MHz, PWM Step-down Switching Regulator | 3.0V~25V | 1.2V | 1.0mA | 6uA | HSOP-8 MSOP-8 |
| 1.5A | Up to 90% | |||||
| P1593 | 1.0A 200KHz, PWM Step-down Switching Regulator with Soft start | 4.5V~26V | 0.75V | 3.5mA | 2uA | SOT-25 SOP-8 |
| 1.2A | Up to 85% | |||||
| P4590 | 4.0A 380kHz, Asynchronous Step-Down Converter | 4.5V~26V | Up to 91% | 2.0mA | 5uA | HSOP-8 |
| 4.0A | ||||||
| P1580 | 2.5A
380KHz, PWM Step-down Switching Regulator * Frequency Feedback at Short Circuit * Thermal Shutdown * Under Voltage Lock Output * Current Mode With Low ESR Output Ceramic Capacitors * Up to 90% Efficiency |
3.5V~28V | 1.222V | 1.7mA | 5uA | HSOP-8 |
| 2.5A | Up to 90% | |||||
| P1986 | 3.0A
330KHz, PWM Step-down Switching Regulator Built-In Soft Start With Fewer Component Count * Duty ratio varies from 0% to 100% PWM control * Built-in switch P-channel power MOS * Halogen Free |
3.6V~28V | 0.8V | 3.0mA | 2uA | SOP-8 |
| 3.0A | Up to 95% | |||||
| P2583 | 3.0A
380KHz, PWM Step-down Switching Regulator * Frequency FoldBack at Short Circuit * Thermal Shutdown * Under Voltage Lock Output * Current Mode with Low ESR Output Ceramic Capacitors * Up to 90% Efficiency |
3.6V~28V | 1.222V | 2.2mA | 20uA | SOP-8 |
| 3.0A | Up to 90% | |||||
| UC34363 | 2.0A
75KHz, PWM Switching
Regulator * CV/CC linear charge * PWM control Mode * Available charge current * Over Voltage protect ,Over Current Protect * Enable Control function * Very Low Power Dissipation in Standby Mode |
8.0V to 30V | 3.0V | - | 7mA | SOP-8 |
| 3.0A | Up to 90% | |||||
| P3596 | 3.0A
150KHz, PWM Step-down Switching Regulator *Low power standby mode *High efficiency *Internal current and thermal limit |
4.5V~35V | 1.23V(Adj) 2.5V,3.3V, 5.0V,12.0V(Fixed) |
5.0mA | 80uA | TO-220-5 TO-220B TO-263-5 |
| 3.0A | Up to 85% | |||||
| UD36061 | 2MHz, 0.6A STEP-DOWN CONVERTER * > 90% Efficiency * Internally Compensated * Internal Soft-Start * Precision Current Limit Without Current Sensing Resistor * 3μA Low Shutdown Supply Current |
3.6V~36V | Up to 90% | 0.13mA | 3uA | SOT-26 |
| 0.6A | ||||||
| UC34463 | 2.0A
200KHz, PWM Buck Switching Regulator * Voltage mode non-synchronous PWM control * Thermal-shutdown and current-limit protection * ON/OFF shutdown control input * Low power standby mode * Built-in switching transistor on chip |
Up to 40V | 5.0V | 5.0mA | 70uA | SOP-8 HSOP-8 |
| 2.0A | Up to 85% | |||||
| P3576B | 2.0A 150KHz, PWM Step-down Switching
Regulator * Low power standby mode * Internal current and thermal limit * Built-in Switching Transistor On Chip. |
4.5V~40V | 5.0V(Fixed) | 4.0mA | 200uA | TO-252-5 |
| 2.0A | Up to 80% | |||||
| LD1596 | 2.0A
150kHz, 40V Buck DC/DC Converter With Constant Current Loop * Minimum Drop Out 1.5V * Internal Optimize Power Transistor * Excellent line and load regulation * TTL shutdown capability * ON/OFF pin with hysteresis function |
4.5V~40V | 1.235V | 5.0mA | 200uA | SOP-8 HSOP-8 |
| 2.0A | Up to 83% | |||||
| P2576 | 3.0A
52KHz, PWM Step-down Switching Regulator * Requires 4 External Components * TTL Shutdown * Low Power Standby Mode * Thermal Shutdown, * Current Limit Protection |
7.0V~40V | 1.23V(Adj) 3.3V,5.0V,12V,15V(Fixed) |
5.0mA | 50uA | SOP-8 HSOP-8 TO-220B TO-220-5 TO-263-5 |
| 3.0A | Up to 85% | |||||
| P2576_HV | *
Output Current 3A * Input Voltage Range of 7V to 60V for P2576HV * Very High Efficiency * TTL Shutdown * Low Power Standby Mode * Thermal Shutdown * Current Limit Protection * Internal Oscillator: 52 kHz Fixed Frequency |
40V/60V | 3.3V、5V、12V、15V、ADJ=1.23V | 5mA | 50uA | TO-220B TO-220-5 TO-263-5 SOP-8 HSOP-8 |
| 3A | up to 88% | |||||
| UMC33167 | 5.0A 72kHz, STEP-UP/DOWN/INVERTING SWITCHING
REGULATORS * Precision 2% Reference * 0% ~ 95% Output Duty Cycle * Cycle-by-Cycle Current Limiting * Undervoltage Lockout with Hysteresis * Internal Thermal Shutdown |
7.5V~40V | Up to 95% | - | 100uA | TO220-5 TO-220B |
| 5.0A | ||||||
| P4596 | 3.0A 200KHz, PWM Control Step-Down Converter * Duty ratio：0%~100% PWM control * Enable with Soft-Start function * Oscillation frequency can be set by outside resistance * Current Limit, SCP and OTP |
8.0V~40V | 0.815V | 3.0mA | 56uA | HSOP-8 |
| 3A | Up to 91% | |||||
| P34563 | PWM
CONTROL 3A STEP-DOWN CONVERTER * Oscillation frequency: 100KHz * Duty ratio: 0%~100% PWM control * Enable and auto restart function. * Short Circuit Protect (SCP). * Thermal Shutdown function / Internal OVP. * Built-in internal SW P-channel MOS. |
8.0V~40V | 1.10V(typ) | 7.0mA | 5uA | HSOP-8 |
| 3.0A | ||||||
| P1690 | 0.4A
150KHz, PWM Step-down Switching Regulator * High efficiency up to 85% * Maximum Duty Cycle 100% * Built in OTP、SCP、OCP |
5V~65V | 1.25V | 5mA | 200uA | SOP-8 |
| 0.4A | Up to 85% | |||||
| UC34163 | DC TO DC CONVERTER CONTROLLER * Low standby current. * Frequency of operation from 100Hz ~ 100kHz. * Step-down switch regulators. |
35V | - | 1500mA | - | DIP-8 SOP-8 |
| *Under Develop | ||||||
| SYNCHRONOUS | ||||||
| Part No. | Features | VIN(Range)(V) | VFB(V) | IQ(mA) | ISTBY(uA) | Package |
| IOUT(A) | η(％) | |||||
| UC3666 | 1.6MHz, Dual Channel 1A High Efficiency
Step-Down DC/DC Converter * Current mode operation * Fixed frequency operation * Over-temperature protection circuit * RoHS Compliant (100% green available) |
2.5V~5.5V | 90% | - | 0.1uA | DFN3030-10 |
| 0.8A | ||||||
| UC3656 | 1.6MHz, 1.0A High Efficiency Step-Down DC/DC
Converter * Schottky Diode is Saved * Internal ON/OFF * 100% Duty Cycle Allows Low Dropout Operation * Stand-by Current: 1μA (Max.) |
2.5V~5.5V | 90% | 300uA | 0.5uA | SOT-25 |
| 1.0A | ||||||
| UD05103 | 1.5MHz/1MHz, 1A HIGH-EFFICIENCY SYNCHRONOUS
STEP-DOWN CONVERTER * Shutdown Current < 1μA * 100% Duty Cycle Operation * Current Mode Operation * Internal Soft-Start. * Current Limit Protection * Over-temperature Protection. * Input Under Voltage Lockout (UVLO) |
2.5V~5.5V | Up to 95% | 600uA | 1.0uA | SOT-25 |
| 1.0A | ||||||
| UC3657 | 1.2MHz , 1.2A Synchronous Buck Converter | 2.5V~5.5V | Up to 95% | 300uA | 0.5uA | TDFN-10(3x3) SOP-8 TSSOP-8 |
| 1.2A | ||||||
| UD05121 | 1.5MHz, 1.2A Synchronous Step-Down Regulator * Up to 95% Efficiency * Less than 1μA Shutdown Current * Thermal Shutdown Protection * Current limit and short circuit protections. * Build-in soft start function |
2.5V~5.5V | Up to 95% | 350uA | 1.0uA | SOT-25 |
| 1.2A | ||||||
| UD05122 | 1.4MHz, 1.2A, VFB=0.6V SYNCHRONOUS STEP-DOWN
CONVERTER * Output Voltage: from 0.6V to VIN * Constant Frequency Operation:1.4MHz * Quiescent Current: 200uA (input < 4.2V) * No Schottky Diode Required * 100% Duty Cycle in Dropout * 0.6V Reference Allows Low Output Voltages * Current Mode Operation for Excellent Line and Load Transient Response * Current limit, Enable function * Short Circuit Protect (SCP) * ≤1μA Shutdown Current |
2.5V~5.5V | Up to 92% | 200uA | 1.0uA | SOT-25 |
| 1.2A | ||||||
| UD05124* | * 2.5V~6V Input Voltage Range * 0.6V Reference Voltage * 1.2A Output Current * Low RDS(ON) for Internal Switch: 340/210 mΩ (Top/Bottom) * 1.5MHz Switching Frequency * Internal 1ms Soft-Start Time * Internal Compensation Function * 100% Dropout Operation * Input Over Voltage Protection * Over Current Protection * Short Circuit Protection * Over Temperature Protection with Auto Recovery |
2.5V~6V | 0.6V | 50uA | 1uA | SOT-25 SOT-26 |
| 1.2A | up 90% | |||||
| UD05151 | 1.5MHz, 1.5A HIGH-EFFICIENCY SYNCHRONOUS
STEP-DOWN CONVERTER * Shutdown Current < 1μA * 100% Duty Cycle Operation * Current Mode Operation * Internal Soft-Start * Current Limit Protection * Over-temperature Protection * Input Under Voltage Lockout (UVLO) |
3.0V~5.5V | Up to 90% | 80uA | 1.0uA | SOT-25 |
| 1.5A | ||||||
| UD05154* | 1.5MHz, 1.5A, VFB=0.6V SYNCHRONOUS STEP-DOWN SYNCHRONOUS
STEP-DOWN CONVERTER * 2.7V to 5.5V Input Voltage Range * 1.5MHz Typical Switching Frequency * Output Current up to 1.5A * Adaptive On-Time Current Control * Power Save Mode for Light Load Efficiency * 50μA Operating Quiescent Current * Over Current Protection * Internal Soft Startup of 300μs (Typ.) * Adjustable Output Voltage * Thermal Shutdown Protection |
2.7V~5.5V | 0.6V | 0.05 | 1 | SOT-25 |
| 1.5A | - | |||||
| UD16203* | 2A, 16V SYNCHRONOUS FAST RESPONSE BUCK CONVERTER * 4.5V~16V Input Voltage Range * Up to 2A Output Current * 130/100mΩ Internal Power MOSFET Switch * PWM Architecture to Achieve Fast Transient Response * Build-in soft start function * 1.2MHz Switching Frequency * Thermal Shutdown Protection |
4.5V~16V | 0.6V | - | 10 | SOT-26 |
| 2.0A | - | |||||
| UD18209* | 2A, 17V SYNCHRONOUS FAST RESPONSE BUCK CONVERTER * 4.5V~17V Input Voltage Range * Up to 2A Output Current * 130/100mΩ Internal Power MOSFET Switch * PWM Architecture to Achieve Fast Transient Response * Build-in soft start function * 580kHz Switching Frequency * Thermal Shutdown Protection |
4.5V~17V | 0.768V | 0.65 | 10 | SOT-26 |
| 2.0A | - | |||||
| UD05158 | 1.5MHz, 1.5A LOW NIOSE SYNCHRONOUS STEP-DOWN
CONVERTER * Shutdown Current < 1μA * 100% Duty Cycle Operation * Current Mode Operation * Internal Soft-Start. * Current Limit Protection * Over-temperature Protection. * Input Under Voltage Lockout (UVLO) |
2.7V~5.5V | Up to 95% | 200uA | 1.0uA | DFN2020-6 |
| 1.5A | ||||||
| UD05201 | 1.2MHz, 2A SYNCHRONOUS STEP-DOWN CONVERTER * High Efficiency: Up to 96% * Low RDS(ON) Internal Switches: 0.15Ω * Current limit, Enable function * Short Circuit Protect (SCP) * Build-in Soft Start function * ≤ 1μA Shutdown Current |
2.6V~5.5V | Up to 96% | 0.4 | 1.0 | SOP-8，HSOP-8 |
| 2A | ||||||
| UD05202 | 1MHz, 2A SYNCHRONOUS STEP-DOWN CONVERTER * Low RDS(ON) for internal switches (top/bottom) 180mΩ/120mΩ * Internal soft-start limits the inrush current * 100% dropout operation |
3V~5.5V | - | 80uA | 10uA | HSOP-8 |
| 2A | ||||||
| UD05203 | 1MHz, 2A SYNCHRONOUS STEP DOWN REGULATOR * Low RDS(ON) for internal switches (top/bottom) 130mΩ/100mΩ * Internal softstart limits the inrush current * 100% dropout operation |
3V~5.5V | - | 80uA | 1uA | HSOP-8 |
| 2A | ||||||
| UD16501* | * Wide 4.5V to 24V Operating Input Range * 5A Load Current * 70mΩ / 25mΩ Low Rds(on) Internal Power MOSFETs * Low Quiescent Current * High Efficiency Synchronous Mode Operation * Fixed 500kHz Switching Frequency * Frequency Sync from 200kHz to 2MHz External Clock * AAM Power Save Mode * Internal Soft Start * OCP Protection and Hiccup * Thermal Shutdown * Output Adjustable from 0.8V |
4.5V~16V | 0.807V | 1mA | 1uA | HSOP-8 |
| 5.0A | - | |||||
| UD05205 | 1.5MHz, 2A SYNCHRONOUS BUCK CONVERTER * 150/120mΩ Internal Power MOSFET Switch * Stable with Low ESR Output Ceramic Capacitors * Up to 95% Efficiency * Less than 1μA Shutdown Current * Thermal Shutdown Protection * Current limit and short circuit protections. * Build-in soft start function |
2.5V~5.5V | Up to 95% | 350uA | 1uA | SOT-25 |
| 2A | ||||||
| UD05206 | 1.5MHz, 2A SYNCHRONOUS STEP DOWN REGULATOR * Shutdown Current < 1μA * 100% Duty Cycle Operation * Current Mode Operation * Internal Soft-Start * Current Limit Protection * Over-temperature Protection * Input Under Voltage Lockout (UVLO) |
2.5V~5.5V | Up to 100% | 128uA | 1uA | HSOP-8 |
| 2A | ||||||
| UD05208 | * 2.7V to 5.5V Input Voltage Range * 1.5MHz Typical Switching Frequency * Output Current up to 2A * Adaptive On-Time Current Control * Power Save Mode for Light Load Efficiency * 50μA Operating Quiescent Current * Over Current Protection * Internal Soft Startup of 250μs (Typ.) * Adjustable Output Voltage * Thermal Shutdown Protection * Available in SOT25 Package |
2.7V~5.5V | 0.6V | TYP 50uA | 1uA | SOT-25 |
| 2A | - | |||||
| UD05209 | 1.5MHz, 2A, VFB=0.6V SYNCHRONOUS STEP-DOWN
CONVERTER * 2.7V to 5.5V Input Voltage Range * 1.5MHz Typical Switching Frequency * Output Current up to 2A * Adaptive On-Time Current Control * Over Current Protection * Internal Soft Startup of 250μs (Typ.) * Adjustable Output Voltage * Thermal Shutdown Protection |
2.7V~5.5V | - | 700uA | - | SOT-25 |
| 2A | ||||||
| UD05251 | 1.2MHz, 2.5A SYNCHRONOUS STEP DOWN
REGULATOR * High Efficiency: Up to 94% * Current limit, Enable function * Short Circuit Protect (SCP) * Build-in Soft Start function * ≤1μA Shutdown Current |
2.6V~5.5V | Up to 94% | 400uA | 1uA | HSOP-8 DFN3030-8 |
| 2.5A | ||||||
| UD052012* | * 2.5V~6V Input Voltage Range * 0.6V Reference Voltage * 2A Output Current * Low RDS(ON) for Internal Switch: 140/90 mΩ (Top/Bottom) * 1MHz Switching Frequency * Internal Soft-Start Limits the Inrush Current * Internal Compensation Function * 100% Dropout Operation * Input Over Voltage Protection * Over Current Protection * Short Circuit Protection * Over Temperature Protection with Auto Recovery |
2.5V~6V | 0.6V | TYP 40uA | 1uA | SOT-25 SOT-26 |
| 2A | up 90% | |||||
| UC3658 | 1MHz, 3.0A Synchronous Step-Down Regulator | 3V~5.5V | Up to 95% | - | 1.0uA | HSOP-8 |
| 3.0A | ||||||
| UD05302 | 1MHz, DUAL 3A SYNCHRONOUS STEP DOWN
REGULATOR * Low RDS(ON) for internal switches (top/bottom) 110mΩ/80mΩ * Internal softstart limits the inrush current * 100% dropout operation |
3V~5.5V | - | 80uA | 10uA | HSOP-8 |
| 3.0A | ||||||
| UD05303 | 1MHz, 3A HIGH EFFICIENCY synchronous step-down
DC-DC regulator * Low RDS(ON) for internal switches (top/bottom) 100mΩ/70mΩ * Internal softstart limits the inrush current * 100% dropout operation * Output power good indicator * RoHS compliant and halogen free |
3V~5.5V | - | - | - | HSOP-8 |
| 3.0A | ||||||
| UD05306 | * High Efficiency: Up to 95% * Low Dropout Operation: 100% Duty Cycle * Programmable Frequency: 300kHz~2MHz * No Schottky Diode Required * 0.8V Reference Allows Low Output Voltage * Low RDS (ON) Internal Switches: 110mW * Forced Continuous Mode Operation |
2.8V~5.5V | 95% | - | 1.0uA | DFN3030-10 |
| 2.0A | ||||||
| UC3655-XX | 1.3MHz 0.5A Synchronous Buck
Converter * Very High Efficiency 92% * Low Ripple Rejection Voltage 10mV * With PWM / PFM Automatic Switching Control * Maximum Duty Ratio is 100% * Ceramic Capacitor Available |
2.0V~6.0V | 90% | 70uA | 1.0uA | SOT-25 |
| 0.5A | ||||||
| UC3206 | 3MHz 0.6A Inductor Built-in Step-Down “micro
DC/DC” Converters * Maximum duty cycle: 100% * High efficiency : 92% (TYP.) * High speed soft-start circuit and Current limiter circuit built-in * CL high speed auto discharge * Low ESR ceramic capacitor compatible |
2.0V~6.0V | 85% | 35uA | 1.0uA | SOT-25 |
| 0.6A | ||||||
| UD05104 | 2.25MHz, 1A SYNCHRONOUS STEP-DOWN DC/DC
CONVERTER * 100% Duty Cycle Operation * Internal Soft-Start * Cycle-by-Cycle Current Limit Protection * Over-Load and Hiccup Mode Short Circuit * Thermal Shutdown Protection |
2.5V~6.0V | - | 40uA | 1.5uA | SOT-25 |
| 1A | ||||||
| UD05104A | * +/-2% 0.6V Feedback Voltage Accuracy * 1MHz Switching Frequency * 100% Duty Cycle Operation * Built-in 170mΩ/150mΩ Power Switch * Cycle-by-Cycle Current Limit Protection * with Soft-start, OTP, Over-Load and Hiccup Mode Short Circuit |
2.5V~6.0V | - | 40uA | 1.5uA | SOT-25 |
| 1A | ||||||
| UCD0318 | 500KHz, 3.0A Synchronous Rectified Step-Down Converter | 4.5V~16V | Up to 95% | 2000uA | 1.0uA | HSOP-8 |
| 3.0A | ||||||
| USR1021 | 500KHz, 3.0A PWM Control Step-Down Converter * Internal soft start * 1.5% initial output accuracy * Cycle-by-cycle current limit * Thermal shutdown * Short-circuit protection |
4.5V~16V | Up to 95% | 3500uA | 3.0uA | SOP-8 |
| 3.0A | ||||||
| UD18203 | 2A, 18V SYNCHRONOUS FAST RESPONSE BUCK CONVERTER * 4.5V~18V Input Voltage Range * Up to 2A Output Current * 140/130mΩ Internal Power MOSFET Switch * PWM Architecture to Achieve Fast Transient Response * Build-in soft start function * 500kHz Switching Frequency * Thermal Shutdown Protection |
4.5V~18V | Up to 90% | 650uA | 10.0uA | SOT-26 |
| 2.0A | ||||||
| USR1051 | 400KHz, 3.0A PWM Control Step-Down Converter with Soft
start * Synchronous Buck * Cycle-by-cycle current limit * Pre-bias start-up * Thermal shutdown * Short-circuit protection |
4.5V~18V | Up to 95% | 1600uA | 1.0uA | HSOP-8 |
| 3.0A | ||||||
| P1482 | 365KHz, 2.0A Synchronous Rectified Step-Down
Converter * Integrated Power MOSFET Switches * Programmable Soft-Start * Stable with Low ESR Ceramic Output Capacitors * Cycle-by-Cycle Over Current Protection |
6V~18V | Up to 93% | 3500uA | - | SOP-8 |
| 2.0A | ||||||
| P1482A | 365KHz, 2.0A Synchronous Rectified Step-Down
Converter * Integrated Power MOSFET Switches * Programmable Soft-Start * Stable with Low ESR Ceramic Output Capacitors * Cycle-by-Cycle Over Current Protection |
6V~18V | Up to 93% | 3500uA | - | HSOP-8 |
| 2.0A | ||||||
| P1484 | 365KHz, 3.0A Synchronous Rectified Step-Down
Converter * Integrated Power MOSFET Switches * Programmable Soft-Start * Stable with Low ESR Ceramic Output Capacitors * Cycle-by-Cycle Over Current Protection |
6V~18V | Up to 93% | 3500uA | - | SOP-8 |
| 3.0A | ||||||
| P1484A | 365KHz, 3.0A Synchronous Rectified Step-Down
Converter * Integrated Power MOSFET Switches * Programmable Soft-Start * Stable with Low ESR Ceramic Output Capacitors * Cycle-by-Cycle Over Current Protection |
6V~18V | Up to 93% | 3500uA | - | HSOP-8 |
| 3.0A | ||||||
| P2680 | 2.0A
340kHz, Step Down Converter * Output Adjustable * Frequency FoldBack at Short Circuit * VIN Under-voltage Lockout * Thermal Shutdown * OCP * Programmable Soft-Start |
7.0V~26V | 0.923V | 900uA | 8uA | HSOP-8 |
| 2.0A | Up to 95% | |||||
| SR2803 | 330KHz, 3.0A Synchronous
Buck Regulator. * Duty ratio varies from 0% to 92% PWM control * Thermal shutdown and SCP function and soft-start, current limit, enable function * Low ESR output capacitor(Multi-layer chip capacitor) application |
4.0V~28V | Up to 95% | 3000uA | 2.0uA | SOP-8 |
| 3.0A | ||||||
| UD36241 | * CC/CV Mode Control * Adjustable Load Line Compensation * 200mΩ Internal Power MOSFET Switch * Current Mode Control * Fixed Frequency Operation : 100kHz * Programmable Output Current Limit * Lowe EMI signature * Cycle-by-Cycle Over Current Protection * Input Under Voltage Lockout * with OTP |
9V~36V | 1V | 4 | 3uA | HSOP-8 |
| 2.4A | - | |||||
| UCC36351 | 160KHz, 3.5A SYNCHRONOUS BUCK CONVERTER WITH
CC/CV * Integrated 75/45mΩ Power MOSFET Switches * Up to 93% Efficiency * Stable with Low ESR Ceramic Output Capacitors * Cycle-by-Cycle Over Current Protection * Input Under/Over Voltage Lockout |
8V~36V | Up to 93% | 1.5mA | - | HSOP-8 |
| 3.5A | ||||||
| UCC36451 | 160KHz, 4.5A SYNCHRONOUS BUCK CONVERTER WITH 2CH
CC/CV * Integrated 75mΩ high side Power MOSFET Switches * Up to 95% Efficiency * Stable with Low ESR Ceramic Output Capacitors * Cycle-by-Cycle Over Current Protection * Input Under/Over Voltage Lockout |
8V~36V | Up to 95% | 2mA | - | HSOP-8 |
| 4.5A | ||||||
| UD38251 | 160KHz, 2.5A SYNCHRONOUS BUCK CONVERTER * Integrated 140mΩ Power MOSFET Switches * Up to 93% Efficiency * Internal Soft-Start * Cycle-by-Cycle Over Current Protection * Input Under/Over Voltage Lockout |
8V~38V | Up to 93% | 1.5mA | 1.3mA | HSOP-8 |
| 2.5A | ||||||
| UD38252 | 160KHz, 2.5A SYNCHRONOUS BUCK CONVERTER WITH
CC/CV * Integrated 140mΩ Power MOSFET Switches * Up to 92% Efficiency * Internal Soft-Start. * Cycle-by-Cycle Over Current Protection * Input Under/Over Voltage Lockout |
8V~38V | Up to 92% | 1.5mA | - | HSOP-8 |
| 2.5A | ||||||
| UD38501 | 160KHz, 5A SYNCHRONOUS BUCK CONVERTER * Integrated 80mΩ high side Power MOSFET Switches * Up to 95% Efficiency * Internal Soft-Start * Cycle-by-Cycle Over Current Protection * Input Under/Over Voltage Lockout |
8V~38V | Up to 95% | 1.5mA | 1.3mA | HSOP-8 |
| 5A | ||||||
| UCC40501 | * Wide 8V to 40V Operating Input Range * Integrated 45mΩ high side Power MOSFET Switches * Output Adjustable from VFB (1.00V±2%) to 16V * Up to 95% Efficiency * Internal Soft-Start and Fixed 160KHz Frequency * Stable with Low ESR Ceramic Output Capacitors * Cycle-by-Cycle Over Current Protection * Input Under/Over Voltage Lockout |
8V~40V | Up to 95% | 1.5mA | 4uA | HSOP-8 |
| - | ||||||
| UCC40702 | 40V SYNCHRONOUS BUCK CONTROLLER WITH 2CH CC/CV | 8V ~ 40V | Up to 95% | 1.5mA | - | MSOP-10 |
| 5A | ||||||
| UD06122 | 1.2A 1.5MHz dual high-efficiency(PWM) step-down
DC-DC converter * Stable with Low ESR Output Ceramic Capacitors * Up to 95% Efficiency * Less than 1μA Shutdown Current * Thermal Shutdown Protection * Current limit and short circuit protections. * Build-in soft start function |
2.5V~6.0V | Up to 95% | 1200mA | 350uA | DFN3030-10 |
| 1.2A | ||||||
| UD05123 | 1.2A 2.25MHz constant frequency current mode PWM
step-down converter * High Efficiency: Up to 92% * 100% Duty Cycle in Dropout * Current limit, Enable function * Short Circuit Protect (SCP) * ≤1μA Shutdown Current |
2.5V~5.5V | Up to 92% | 90uA | 1uA | SOT-25 |
| 1.2A | ||||||
| UD32121 | 1.4MHz, 1.2A STEP-DOWN CONVERTER * 0.35Ω Internal Power MOSFET Switch * Stable with Low ESR Output Ceramic Capacitors * Up to 92% Efficiency * 0.1μA Shutdown Mode * Thermal Shutdown * Cycle-by-Cycle Over Current Protection |
4.5V~32V | Up to 92% | 0.8mA | 3uA | SOT-26 |
| 1.2A | ||||||
| *Under Develop | ||||||
| Step-Down DC-DC PWM or PFM Controller (Buck) | ||||||
| Part No. | Features | VIN(Range)(V) | η(％) | IQ(uA) | ISTBY(uA) | Package |
| UC3750-XX | 600kHz
PWM /PFM Buck Controller * Built-in soft-start (SS) * Automatic PWM/PFM switchover under light load condition * Internal under-voltage lockout (UVLO) protection * Low profile and minimum external components |
2.45V~5.5V | 92% | 50uA(Typ) | 0.3uA | SOT-25 |
| UC4601 | 500kHz
PWM Step-down DC-DC Controller * Internal soft-start and protection function * High efficiency up to 90% (TYP.) * Standly current: 0.1μA (TYP.) * CMOS output capability |
2.5~18V | 90% | 40uA(Typ) | 1.0uA | SOT-25 |
| M7085 | 1MHz
PFM STEP-DOWN Controller * High efficiency 90% and up is possible * Low dropout operation：100% duty cycle * Two methods of over-current protection |
4.5V~35V | 93% | 300uA(Typ) | - | MSOP-8 |
| USR1101 | 5V/12V
Synchronous Buck PWM DC-DC Controller * Drives all low cost N-channel MOSFETs * PWM control mode * Internal soft-start * RoHS compliant and 100% lead (Pb)-free |
5V±5%,12V±10% | 88% | 6mA(Typ) | - | SOP-8 |
| UCC2105 | * 8V~24V Input Voltage Range * CC/CV Mode Control * Fixed 100KHz Operating Frequency * Soft Start Function for Start-up * Fold back Short-Circuit Protection * High Efficiency Operation * Output Over-Voltage Protection * Over Temperature Protection |
8V~24V | - | - | 10000uA | SOP-8 |
| UC3535 | Step-Down DC-DC Converter and Controller | 3V ~ 600V | Up to 85% (100Vin at 12Vout 10AMax.) | - | - | SOP-16 |
| *Under Development | ||||||