SC4216 Datasheet, PDF (1/9 Pages) Semtech Corporation – Very Low Input /Very Low Dropout 3 Amp Regulator With Enable

POWER MANAGEMENT
Description
The SC4216 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
3 amperes. It operates with a Vin as low as 1.45V, with
output voltage programmable as low as 0.5V. The SC4216
features ultra low dropout, ideal for applications where Vout
is very close to Vin. Additionally, the SC4216 has an en-
able pin to further reduce power dissipation while shut
down. The SC4216 provides excellent regulation over varia-
tions in line, load and temperature.
The SC4216 is available in an SOIC-8EDP (Exposed Die
Pad) package. The output voltage can be set via an
external divider or to fixed settings of 0.5V and 1.2V
depending on how the FB pin is configured.
Typical Application Circuits
SC4216
Very Low Input /Very Low Dropout
3 Amp Regulator With Enable
Features
‹ Input voltage as low as 1.45V
‹ 500mV dropout @ 3A
‹ Adjustable output from 0.5V
‹ Over current and over temperature protection
‹ Enable pin
‹ 10µA quiescent current in shutdown
‹ Full industrial temperature range
‹ Available in SOIC-8EDP Lead-free package. This
product is 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
SC4216
4 _NC
NC ⁵
3 _VIN
VO ⁶
2 _EN
FB ⁷
1 _NC
GND ⁸
R1
U1
C1
R2
VO
C2
VO = ^{0.5 (R1 + R2)} Volts
R2
VIN
ENABLE
SC4216
4 _NC
NC ⁵
3 _VIN
VO ⁶
2 _EN
FB ⁷
1 _NC
GND ⁸
U1
C1
VO = 0.5 Volts
VO
C2
VIN
ENABLE
SC4216
4 _NC
3 _VIN
2 _EN
1 _NC
NC ⁵
VO ⁶
FB ⁷
GND ⁸
C1
VO = 1.2 Volts
VO
C2
Revision: March 29, 2006
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