Datasheet > AS1355_04

AS1355_04

更新时间： 2022-05-10 12:10:14

品牌	Logo	应用领域
艾迈斯 - AMSCO		/
页数	文件大小	规格书
12页	281K
描述
300mA, Triple LDO

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AS1355_04 数据手册

AS1355

300mA, Triple LDO

1 General Description

Accuracy: ±1.0%

The AS1355 is a high-performance triple CMOS low-dropout voltage

regulator in a single QFN package. The efficient set of

programmable power supplies is optimized to deliver the best

compromise between quiescent current and regulator performance

for mobile phones, PDAs, MP3 players, and other battery powered

devices.

PSRR: 70dB at 1kHz, 60dB at 100kHz

Load Regulation: 3mV (0 to 300mA)

Supply Range: 2.3V to 5.5V

0.1V Dropout Voltage @ Iload = 200mA

Shutdown Current: 1µA

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 capacitors ensures low output impedance

at high frequencies.

Supply Current Without Load: 160µA

Softstart for Low Inrush Current

Stable with low ESR Ceramic Capacitors from 1µF to 4.7µF

Low Noise: 40µV rms @10Hz to 100kHz Bandwidth

Thermal Protection

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 networks.

Over-Current Protection

The AS1355 is available in a 16-pin QFN 3x3 package.

Temperature Range: -40°C to +85°C

Packages:

- 16-pin QFN 3x3

- 16-pin TQFN 3x3

2 Key Features

3 Independent Voltage Regulators with Shutdown

Output Current: 300mA each LDO

3 Applications

The AS1355 is ideal for cordless and mobile phones, MP3 players,

CD and DVD players, PDAs, hand-held computers, digital cameras,

and any other hand-held battery-powered device.

Programmable Output Voltage Range: 1.25V to 3.6V in 50mV

Steps

Figure 1. AS1355 - Typical Application Diagram

VDD1

VOUT1

VOUT2

3.3V

1.8V

+5V

1µF

VDD2

1µF

VOUT3

VDD3

1.5V

AS1355

1µF

REF

VDDA

= 100nF

REF

(Improved Noise Performance)

EN1

EN2

GND

µP

EN3

www.ams.com/LDOs/AS1355

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