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AS1352_7BC0-T

Description
IC reg ldo 2.5/2.9/3/1.8V 12qfn
Categorysemiconductor    Analog mixed-signal IC   
File Size226KB,10 Pages
ManufacturerAMS
Websitehttps://ams.com/zh
Environmental Compliance  
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AS1352_7BC0-T Overview

IC reg ldo 2.5/2.9/3/1.8V 12qfn

AS1352
Programmable Quad LDO
D a ta S he e t
1 General Description
The AS1352 is a high-performance quad CMOS low-
dropout voltage regulator in a single QFN package. The
efficient set of programmable power supplies is opti-
mized to deliver the best compromise between quies-
cent current and regulator performance for mobile
phones, PDAs, MP3 players, and other battery powered
devices.
The one-time-programmable (OTP) function provides
greater design flexibility by allowing for independent pro-
gramming of the output voltage for each regulator on-
site. The OTP function allows for fast prototyping reduc-
ing development times and costs significant. Factory
trimmed versions for full-production are also available.
Stability is guaranteed with ceramic output capacitors of
only 1µF (±20% – X5R) up to 4.7µF (±20% – X5R). The
low equivalent series resistance (ESR) of these capaci-
tors ensures low output impedance at high frequencies.
Regulation performance is excellent even under low
dropout conditions, when the power transistor has to
operate in linear mode.
The low-noise performance allows direct connection of
noise sensitive circuits without additional filtering net-
works.
The AS1352 is available in a 12-pin QFN 4x4 package
and a 16-pin QFN 3x3 package.
2 Key Features
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4 Independent Voltage Regulators with Shutdown
Output Current: 200mA each LDO
One Time Programmable Output Voltage
(User- or Factory-Trimmed)
Programmable Output Voltage Range: 1.8 to 3.3V in
0.1V Steps
Accuracy: ±2%
PSRR: 70dB at 1kHz, 40dB at 100kHz
Line Regulation: ±2mV
Load Regulation: ±0.6mV
Supply Range: 3 to 5.5V
0.2V Dropout Voltage @ I = 200mA
Shutdown Current:
≤1µA
Supply Current Without Load: 225µA
Softstart for Low Inrush Current
Stable with Low ESR Ceramic Capacitors from 1 to
4.7µF
Low Noise: 40µV rms @10Hz to 100kHz Bandwidth
Thermal Protection
Over-Current Protection
Temperature Range: -40 to +85°C
Package Types
- 12-pin QFN 4x4
- 16-pin QFN 3x3
3 Applications
The AS1352 is ideal for cordless and mobile phones,
MP3 players, CD and DVD players, PDAs, handheld
computers, digital cameras, and any other hand-held
battery-powered device.
Figure 1. Pinout Assignments (Top View)
EN3
12
EN4
11
REF
10
EN1
EN2
1
9
GND
V
DD
8
V
DD
V
DD
7
4
5
6
V
OUT4
V
DD
13
EN2
16
1
EN3
15
EN4
14
REF
13
12 GND
AS1352
EN1
2
12-pin QFN
4x4
2
AS1352
16-pin QFN
3x3
11 GND
3
10 V
DD
V
DD
3
4
5
6
7
8
9
V
DD
GND
V
OUT1
V
OUT2
V
OUT3
(Exposed Pad)
V
OUT1
V
OUT2
V
OUT3
V
OUT4
www.austriamicrosystems.com
Revision 1.31
1 - 10

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