AMS3120
2A Fast Transient Linear Regulator
General Description
Features
The AMS3120 is a high performance linear regulator
with very low dropout voltage and excellent transient
response. It is designed to operate with wide input
voltage range of 1.5 – 7Volts making it ideal for two
step conversion while maintaining high efficiency for
many power sensitive applications. The device is
capable of supplying 2A of output current with a
typical dropout voltage of 550mV at 2A. The product
is available in either fixed or adjustable output
voltage.
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VIN range: 1.5 – 7V
Fixed and Adjustable output voltage as low
as 0.6V
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2A maximum output current
550mV typical dropout voltage at 2A
Low self noise
Optional Power Good (PG) output
Enable (EN) pin for LDO on/off
125µA typical supply current
PSRR >40dB at 10KHz
The linear regulator has been optimized for noise
sensitive applications.
The device includes an
Stable with Electrolytic, Tantalum or
Ceramic capacitors
Enable pin for electrical on/off of the regulator.
Forcing the Enable pin to logic low shuts down the
LDO and reduces the supply current to less than
1µA.
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Current Limit protection
Over-Temperature Shutdown
-40 to +125°C temperature range
The product includes complete short-circuit and
thermal protection. The combination of these two
internal protection circuits gives the device a
comprehensive safety system to safe guard against
extreme adverse operating conditions.
Thermally enhanced SOIC-8 exposed
paddle package
RoHS & WEEE compliant
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Applications
The AMS3120 is available in a thermally enhanced
SOIC-8 EDP package, and it is rated for -40°C to
+125°C temperature range.
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Set-top Box
DVD, Blue-ray DVD writers
LCD TVs and LCD monitors
Infotainment
Wireless & RF: applications
Laptops & notebook
Typical Application
VIN= 3.3V
VOUT=1.8V
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VIN
VOUT
AMS3120
PG*
CIN=10μF
COUT = 22μF
EN
ADJ*
GND
* Optional Power Good, Fixed and Adjustable VOUT are available
02/11/2010
www.advanced-monolithic.com
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Phone (925) 443-0722
Fax (925) 443-0723