SC4217_09 Datasheet, PDF (1/11 Pages) Semtech Corporation – Very Low Input /Very Low Dropout 3 Amp Regulator With Enable

SC4217
POWER MANAGEMENT
Very Low Input /Very Low Dropout
3 Amp Regulator With Enable
Features
 Input voltage range from 1.8V to 5.5V
 Typical 300mV dropout @ 3A
 Adjustable output from 1.24V
 Over-current and over-temperature protection
 Enable pin
 10µA shutdown current
 Full industrial temperature range
 TO263-5 package, fully WEEE and RoHS compliant
Applications
 Telecom/networking equipment
 Motherboards/peripheral cards
 Industrial equipment
 Wireless infrastructure
 Set-top boxes
 Medical equipment
Description
The SC4217 is a 3A, high performance LDO designed for
use in applications requiring very low input voltage and
very low dropout voltage. It operates with an input volt-
age as low as 1.8V and a programmable output voltage
from 1.24V. The SC4217 features ultra- low dropout, ideal
for applications where V_OUT is very close to V_IN. Addi-
tionally, the SC4217 has an enable pin to further reduce
power dissipation while shut down. The SC4217 provides
excellent regulation over line, load and temperature.
The SC4217 is available in a TO263-5 package and is fully
WEEE and RoHS compliant.
Typical Application Circuit
EN
SC4217
1
4
VO
EN
VO
2
VIN
VIN
3 _GND
ADJ ⁵
R1
C2
C1
R2
0
0
April 03, 2009