SP6123A
SP6123A is Low Voltage Synchronous Step-Down PWM Controller manufactured by Sipex.
DESCRIPTION
The SP6123 is a fixed frequency, voltage mode, synchronous PWM controller designed to work from a single 5V or 3.3V input supply, providing excellent AC and DC regulation for high efficiency power conversion. Requiring only few external ponents, the SP6123 packaged in an 8-pin NSOIC, is especially suited for low voltage applications where cost, small size and high efficiency are critical. The operating frequency is internally set to 300k Hz (SP6123) or 500k Hz (SP6123A), allowing small inductor values and minimizing PC board space. The SP6123 drives an all N-channel synchronous power MOSFET stage for improved efficiency and includes an accurate 0.8V reference for low output voltage applications. TYPICAL APPLICATION CIRCUIT
3V to 5.5V
MBR0530 VIN CB 2.2µF GL VCC GND P BST GH CBST 1µ F FDS6890A L1 VOUT 1.5µH R1 10k CP 56p F RZ 15k CC 4.7n F FDS6890A STPS2L25U R2 10k COUT1 470µF COUT2 470µF COUT3 1µ F CIN 680µF
SWN VFB
0.8V to 5.0V 2A to 10A (1.6V, 4A shown)
Date: 5/25/04
SP6123 Low Voltage, Synchronous Step Down PWM Controller
© Copyright 2004 Sipex Corporation
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VCC 7V BST 13.2V BST-SWN 7V All other pins -0.3V to VCC + 0.3V Peak Output Current < 10µs GH,GL 2A Storage Temperature -65°C to 150°C Power Dissipation Lead Temperature (Soldering, 10 sec) 300°C ESD Rating....
