Description
Synchronous Buck Controller with Multi-Level VOUT Transition Support POWER POWERMANAGEMENT MANAGEMENT .
The SC471/A is a versatile, constant on-time synchronous buck, pseudo-fixed-frequency, PWM controller intended for notebook computers and other battery.
Features
* needed to provide cost-effective control of system elements needing voltage slewing. Two integrated switches provide four resistor-programmable DC output voltages, controlled by the G0 and G1 inputs. The output voltage is adjustable from 0.75V to 5V. Additional features for each output include cycle
Applications
* Notebook/Sub-Notebook Graphics Voltage Controllers Tablet PCs Embedded Applications
September 12, 2006
1
www. semtech. com
SC471/SC471A
POWER MANAGEMENT Typical Application Circuit
VCC C4 D1 VBAT C3 Q1 R5 G1 G0
16
15
14 G0
C2 L1 VOUT 1 2 C1 VCC Q2 3 4
DH
G1
ILIM
13
www. DataSheet4U. com
LX