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SC4211_06 Datasheet

  • SC4211_06

  • Very Low Input /Very Low Dropout 1 Amp Regulator With Enable

  • 9頁(yè)

  • SEMTECH   SEMTECH

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Very Low Input /Very Low Dropout
1 Amp Regulator With Enable
POWER MANAGEMENT
Description
The SC4211 is a high performance positive voltage
regulator designed for use in applications requiring very
low Input voltage and very low dropout voltage at up to
1 amperes. It operates with a Vin as low as 1.4V, with
output voltage programmable as low as 0.5V. The
SC4211 features ultra low dropout, ideal for applications
where Vout is very close to Vin. Additionally, the SC4211
has an enable pin to further reduce power dissipation
while shut- down. The SC4211 provides excellent regu-
lation over variations in line, load and temperature.
The SC4211 is available in the SOIC-8EDP (Exposed Die
Pad) package. The output voltage can be set via an exter-
nal divider or to fixed settings of 0.5V and 1V depending
on how the FB pin is configured.
SC4211
Features
Input Voltage as low as 1.4V
400mV dropout @ 1A
Adjustable output from 0.5V
Over current and over temperature protection
Enable pin
10碌A(chǔ) quiescent current in shutdown
Full industrial temperature range
Available in SOIC-8EDP Lead-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
Battery powered systems
Typical Application Circuits
4
NC
SC4211
NC
VO
FB
GND
5
6
7
8
VIN
ENABLE
3
2
1
VIN
EN
NC
VO
VO
R1
=
0.5 (R1
+
R2)
R2
Volts
C1
U1
C2
R2
SC4211
4
NC
VIN
EN
NC
NC
VO
FB
GND
5
6
7
8
SC4211
4
5
NC
VIN
EN
NC
NC
VO
FB
GND
6
7
8
VIN
ENABLE
3
2
1
VO = 0.5V
VIN
ENABLE
1
3
2
VO = 1V
C1
U1
C2
C1
U1
C2
Revision: April 24, 2006
1
www.semtech.com

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