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AMS3108 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 AMS3108
部品説明 Micropower 700mA Low Noise Fast Transient Response LDO
メーカ Advanced Monolithic Systems
ロゴ Advanced Monolithic Systems ロゴ 

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AMS3108 Datasheet, AMS3108 PDF,ピン配置, 機能
AMS3108
Micropower 700mA Low Noise Fast Transient Response LDO
General Description
The AMS3108 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 – 12Volts making it ideal for two
step conversion while maintaining high efficiency for
many power sensitive applications. The device is
capable of supplying 700mA of output current with a
typical dropout voltage of 550mV. The product is
available in either fixed or adjustable output voltage.
The linear regulator has been optimized for noise
sensitive applications. The device includes an
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 below 1µA. In
addition, the AMS3108 provides an open collector
Power Good (PG) signal to allow supply monitoring
and sequencing of other supplies.
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.
The AMS3108 is available in a thermally enhanced
SOIC-8 EDP package, and it is rated for -40°C to
+125°C temperature range.
Typical Application
Features
VIN range: 1.5 – 12V
Fixed and Adjustable output voltage as low
as 0.6V
700mA maximum output current
550mV of typical dropout voltage at 700mA
Low self noise
Enable (EN) pin for LDO on/off
Power Good (PG) output
120µA typical supply current
ByPass pin (CBYP) for low PSRR and output
noise
PSRR > 40dB at 10KHz
Stable with Electrolytic, Tantalum or
Ceramic capacitors
Current Limit protection
Over-Temperature Shutdown
-40 to +125°C temperature range
Thermally enhanced SOIC-8 exposed
paddle package
RoHS & WEEE compliant
Applications
ASIC Power Supplies In:
¾ Set-top Boxes, Desktops, Notebooks
¾ Graphic Cards, Printers and Copiers
DVD, Blue-Ray DVD writers
LCD TVs and LCD monitors
Infotainment
Wireless & RF: applications
DSP and FPGA Power Supplies
Medical Instrumentation
SMPS Post-Regulator
02/11/2010
www.advanced-monolithic.com
1
Phone (925) 443-0722
Fax (925) 443-0723

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