SC4215_06 Datasheet, PDF (1/9 Pages) Semtech Corporation – Very Low Input /Very Low Dropout 2 Amp Regulator With Enable

POWER MANAGEMENT
Description
The SC4215 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
2 amperes. It operates with a Vin as low as 1.6V, with out-
put voltage programmable as low as 0.8V. The SC4215
features ultra low dropout, ideal for applications where Vout
is very close to Vin. Additionally, the SC4215 has an
enable pin to further reduce power dissipation while shut
down. The SC4215 provides excellent regulation over varia-
tions in line, load and temperature.
The SC4215 is available in the SOIC-8EDP (Exposed Die
Pad) package. The output voltage can be set via an
external divider or to fixed settings of 0.8V and 2.5V de-
pending on how the ADJ pin is configured.
Typical Application Circuits
SC4215
Very Low Input /Very Low Dropout
2 Amp Regulator With Enable
Features
‹ Input Voltage as low as 1.6V
‹ 500mV dropout @ 2A
‹ Adjustable output from 0.8V
‹ Over current and over temperature protection
‹ Enable pin
‹ 10µA 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
VIN
ENABLE
SC4215
4 _NC
NC ⁵
3 _VIN
VO ⁶
2 _EN
ADJ ⁷
1 _NC
GND ⁸
R1
VO
VO
=
0.8 (R1 + R2)
R2
Volts
U1
C1
C2
R2
VIN
ENABLE
SC4215
4
NC
3 _VIN
5
NC
6
VO
2 _EN
1
NC
ADJ 7
GND ⁸
U1
C1
VO = 0.8V
VIN
ENABLE
C2
SC4215
4 _NC
NC ⁵
3 _VIN
VO ⁶
2 _EN
ADJ ⁷
1 _NC
GND ⁸
U1
C1
VO = 2.5V
C2
Revision: March 22, 2006
1
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