Voltage Mode PWM Controller   
Part No. Features Function VCC(Operating) Frequency Duty Cycle Output Package
Min. Max. Min. Max. Max. Type IO(Max.)
L2800 Low Voltage Switching Regulator Controller

*Wide supply voltage operating range: 1.8V~15V
*High speed operation is possible: Maximum 1MHz
*The error amplifier gain is set inside the IC, so peripheral components are minimized.
*Incorporates a soft start circuit.
*Incorporates a stand-by function.
Output Current Setting, Control Pin,
SCP, Soft Start.
1.8V  15.0V 10KHz 1MHz 85% Totem-pole 40mA SOP-8 TSSOP-8
TL5001 Pulse width Modulation Control Circuits

* Complete PWM power control
* Internal under voltage-lockout circuit
* Internal short-circuit protection
* Oscillator frequency : 20kHz to 500kHz
* Variable dead timer provides control over total range
Output Dead Time Control, SCP,UVLO. 3.6V 40.0V 20KHz 500KHz 100% Open Collector 20mA DIP-8 SOP-8 
BA9741 Two-Channel Switching Regulator Controller

*Time-latch, short-circuit protection circuit
*Miss-operation prevention circuit for low-voltage input
*Reference voltage with output (2.5V)
Dual Output Dead Time Control, SCP,UVLO. 3.6V 35.0V 10KHz 800KHz 65% Common Emitter 100mA DIP-16 SOP-16 TSSOP-16
TL1451 Dual Pulse width Modulation Control Circuits

*Completely synchronized operation
*Internal undervoltage lockout protection
*Internal Short-Circuit protection
*Variable dead time provides control over total range
*Internal regulator provides a stable 2.5V reference supply
Dual Output Dead Time Control, Synchronized, SCP,UVLO. 3.6V 50.0V 1KHz 350KHz 100% Common Emitter 20mA DIP-16 SOP-16 TSSOP-16
U9751B Double Channels PWM Controller

* Switch frequency: 400KHz
* Wide work voltage
* Programmable dead-time control
* UVLO protection
* SCP protection
Dual Output Dead Time Control,
SCP, UVLO.
- 38.0V CT=220PF,RT=10KΩ 100% Common Emitter 400mA DIP-16 SOP-16 SSOP-16
TYP=400KHz
U8021 Voltage Mode PWM Controller with Linear Power
Regulator for Synchronous Buck Converter

* Internal LDO
* Programmable output voltages
* Internal soft start
* Under voltage lockout
* Short circuit protection
Synchronized Buck Converter, Internal LDO, SCP,OCP, UVLO, Soft Start 4.0V 16.0V 500KHz 700KHz 97% Totem-pole IDRIVE=1.5A SOP-14
TL494 Voltage Mode PWM Control IC

* Uncommitted outputs for 200mA sink or source current
* Output control selects single ended or push pull operation
* Internal circuitry prohibits double pulses over total range
* Easy synchronization
Half Bridge/Push Pull/Single End,
Vref=±5% Dead Time Control
7.0V 40.0V 1KHz 300KHz 50% Common Emitter 200mA DIP-16 SOP-16 TSSOP-16
Emitter Follow
TL594 Pulse-Width-Modulation Control Circuit

* Adjustable dead time
* Single-Ended or Push-Pull operation selected by output control
* Double pulse is not allowed at either output due to its architecture
* 5V Internal reference voltage (1% accuracy)
* UVLO under the low VCC status
Half Bridge/Push Pull/Single End,
Vref=±1% Dead Time Control
7.0V 40.0V 1KHz 300KHz 50% Common Emitter 200mA DIP-16 SOP-16
Emitter Follow
UA7500B* Voltage Mode PWM Control IC Half Bridge/Push Pull/Single End,
Vref=±5% Dead Time Control
7.0V 40.0V 1KHz 300KHz 50% Common Emitter 200mA DIP-16 SOP-16 
Emitter Follow
51494 Voltage Mode PWM Control IC with Power Good Signal

* Fully integrated with compact 16-pin dip
* Built-in power good delay and power fail lead function.
* Power good delay time is linearly.
* Proportional to external capacitor value.
Half Bridge/Push Pull,
Vref=±5%, PG, PF Dead Time Control
- 42.0V CT=0.01uF,RT=12KΩ 45% Common Emitter 250mA DIP-16 SOP-16 
TYP=10KHz
3521 PWM Controller with Supervisory Circuit for SMPS.

* Remote ON/OFF Function
* Power Good Circuitry
* Delay Time for PG Signal
* Delay Time for Over-Voltage and Under-Voltage Protection
* On-Chip Oscillator and Error Amplifier
Half Bridge/Push Pull, PG/PF,
Remove Control,  OVP, UVP, Soft Start. 
- 5.5V CT=2200PF 50%  Open Drain 200mA DIP-16
60KHz 70KHz
3531 Power Supply Supervisory + Regulator + PWM

* UV Protection for -12V and/or -5V
* Delay Time for PSON and PG Signal
* Remote ON/OFF Function
* On Chip Oscillator and Error Amplifier
* Soft-Start and Maximum 93% Duty Cycle
Half Bridge/Push Pull, PG/PF,
Remove Control, UVAC, OVP, UVP,
OPP, OCP, SCP, Soft Start 
4.5V 5.5V RI=75KΩ 93% Totem-pole 30mA DIP-20
60KHz 70KHz
U3525 PWM controller IC, PWM latching

* Adjustable dead time control
* Internal soft-start
* Pulse-by-pulse shutdown
* Input under-voltage lockout with hysteresis
* Latching PWM to prevent multiple pulses
Half Bridge/Push Pull,Vref=±1%,
Sync Teminal, Dead Time Control, Pulse By Pulse Shutdown, UVLO, Soft Start 
8.0V 35.0V 100Hz 400KHz 49% Totem-pole 500mA DIP-16 SOP-16
*: Under  Development