APW7037A_08 Datasheet, PDF (1/11 Pages) Anpec Electronics Coropration – 8-PIN Synchronous Buck PWMController

APW7037A/B
8-PIN Synchronous Buck PWM Controller
Features
General Description
• Operating with Single 5V or 12V Input
• Drives N-Channel MOSFETs
• Simple Single-Loop Control Design
- Voltage-Mode PWM Control
- Full 0% to 100% Duty Ratio
- Fast Transient Response
• ±2% Output Voltage Accuracy Over Temperature
• Under-Voltage Protection for Output
• 200/400kHz Constant Frequency Operation
- 200kHz for APW7037B
- 400kHz for APW7037A
• Small size, 8-PIN Package (SOIC or TSSOP)
• Lead Free and Green Devices Available
(RoHS Compliant)
The APW7037 series are designed to provide a low cost
synchronous Buck regulator for on-board DC to DC con-
verter applications. The APW7037 series together with
dual N-channel MOSFETs such as APM7313, provide a
low cost solution for such applications. Each device fea-
tures an internal 200/400kHz oscillator, Power-On-Reset
(POR) for both VCC and VC supplies, an external pro-
grammable soft-start function as well as output under-
voltage detection that latches off the device when an out-
put short is detected.
Pin Configuration
Applications
• Graphics Cards
• DDR Memory Power Supply
• DDR Memory Termination Voltage
• Low-Voltage Distributed Power Supplies
FB
1
VCC
2
LDRV
3
GND
4
8
SS
7
COMP
6
VC
5
HDRV
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. A.7 - Jun. , 2008
www.anpec.com.tw