SC4212 Datasheet, PDF (1/9 Pages) Semtech Corporation – Very Low Input /Very Low Dropout 1Amp Regulator With Enable

SC4212
POWER MANAGEMENT
Features
„„ Input voltage as low as 1.5V
„„ 400mV dropout @ 1A
„„ Adjustable output from 0.5V
„„ Over current and over temperature protection
„„ Enable pin
„„ 10μA quiescent current in shutdown
„„ Low reverse leakage (output to input)
„„ Full industrial temperature range
„„ Available in MLPD-8 Pb-free package, fully WEEE and
RoHS compliant
Applications
„„ Telecom/Networking cards
„„ Motherboards/Peripheral cards
„„ Industrial Applications
„„ Wireless infrastructure
„„ Set top boxes
„„ Medical equipment
„„ Notebook computers
Very Low Input /Very Low Dropout
1Amp Regulator With Enable
Description
The SC4212 is a high performance positive voltage regu-
lator designed for applications requiring very low input
voltage and very low dropout voltage at up to 1 Ampere.
It operates with a VIN as low as 1.5V, with output voltage
programmable as low as 0.5V. The SC4212 features ultra
low dropout, ideal for applications where VOUT is very
close to VIN. Additionally, the SC4212 has an enable pin
to further reduce power dissipation while shutdown. The
SC4212 provides excellent regulation over variations in
line, load and temperature.
The SC4212 is available in a 3 x 3 MLPD-8 package. The
output voltage can be set via external divider or to a
fixed setting of 0.5V depending upon how the FB pin
is configured.
Typical Application Circuit
VIN
ENABLE
SC4212
VIN
VOUT
EN
FB
C1
GND
VOUT
C2
VIN
ENABLE
SC4212
VIN
EN
C1
VOUT
FB
GND
R1
C2
R2
VOUT
VOUT = 0.5V
April 27, 2010
VOUT = ^{0.5(R1+ R2)} (Volts)
R2
1