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AS13985F29-T Datasheet(PDF) 2 Page - ams AG

Part # AS13985F29-T
Description  Micropower 150mA Low-Noise LDO
Download  13 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS13985F29-T Datasheet(HTML) 2 Page - ams AG

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AS13985
Micropower 150mA Low-Noise LDO
www.austriamicrosystems.com
Revision 1.13
1 - 12
Datasheet
1 General Description
The AS13985 is a high-performance low-dropout 150mA
voltage regulator designed for use with very-low ESR out-
put capacitors. The device can deliver superior perfor-
mance in all specifications critical to battery-powered
designs, and is perfectly suited for mobile phones, PDAs,
MP3 players, and other battery powered devices.
Stability is guaranteed with a ceramic output capacitor from
1 to 22µF. The low equivalent series resistance of these
capacitors ensures low output impedance at high frequen-
cies.
Automatic sleep mode requires less than 1µA quiescent
current when pin EN is pulled low.
Regulation performance is excellent even under low drop-
out conditions, when the power transistor has to operate in
linear mode.
A 10nF bypass capacitor can be added to reduce output
noise to 30µV. The low-noise performance allows direct
connection of noise sensitive circuits without additional fil-
tering networks.
Multiple output voltage options are available as standard
products. Contact austriamicrosystems AG for details.
The AS13985 is available in a 5-bump WLP package and a
5-pin SOT23 package.
Figure 1. AS13985 - Block Diagram
2 Key Features
!
Ultra-Low Dropout Voltage (typically
45mV @ 150mA, 0.3mV @ 1mA)
!
Supply Range: 2.5V to 5.5V
!
Output Voltage Range: 1.2V to 5.0V (in 25mV Steps)
!
Output Current: 150mA (Guaranteed)
!
Stable with Low-ESR Output Capacitor
!
Integrated Over-Temperature/Over-Current Protection
!
Low GND Pin Current (only 95µA)
!
Output Voltage Accuracy: 1%
!
Minimal External Components Required
!
High Peak-Current Capability
!
Low Shutdown Current:
≤1µA
!
Operating Temperature Junction Range: -40 to +125°C
!
Smallest Available Packages:
- 5-bump WLP
-5-pin SOT23
3 Applications
The AS13985 is ideal for powering cordless and mobile
phones, MP3 players, CD and DVD players, PDAs, hand-
held computers, digital cameras, and any other hand-held
battery-powered device.
VREF
AS13985
Over-Current/
Over-Temperature
Protection
+
EN
VIN
VOUT
BYPASS
GND


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