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.
SC4216
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
Typical Application Circuits
SC4216
4
NC
VIN
EN
NC
NC
VO
FB
GND
5
6
7
8
VIN
ENABLE
3
2
1
VO
R1
VO
=
0.5 (R1
+
R2)
R2
Volts
C1
U1
C2
R2
SC4216
4
NC
VIN
EN
NC
NC
VO
FB
GND
5
6
7
8
SC4216
VO
=
0.5
Volts
VO
VIN
ENABLE
4
3
2
1
NC
VIN
EN
NC
NC
VO
FB
GND
5
6
7
8
VO
=
1. 2
Volts
VO
VIN
ENABLE
3
2
1
C1
U1
C2
C1
C2
Revision: March 29, 2006
1
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