Datasheet > AS1358-BTTT-28

AS1358-BTTT-28

更新时间： 2022-12-27 17:49:42

品牌	Logo	应用领域
艾迈斯 - AMSCO		稳压器
页数	文件大小	规格书
14页	715K
描述
150mA/300mA, Ultra-Low-Noise, High-PSRR Low Dropout Regulators

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AS1358-BTTT-28 数据手册

Datasheet

AS1358/AS1359

150mA/300mA, Ultra-Low-Noise, High-PSRR

Low Dropout Regulators

1 General Description

2 Key Features

ꢀ

Preset Output Voltages: 1.5 to 4.5V (in 50mV steps)

Output Noise: 9µVRMS @ 100Hz to 100kHz

Power-Supply Rejection Ratio: 92dB @ 1kHz

Low Dropout: 140mV @ 300mA Load

Stable with 1µF Ceramic Capacitor for any Load

Guaranteed 150/300mA Output

The AS1358/AS1359 are ultra-low-noise, low-dropout

linear regulators specifically designed to deliver up to

150/300mA continuous output current, and can achieve

a low 140mV dropout for 300mA load current. The LDOs

are designed and optimized to work with low-cost, small-

capacitance ceramic capacitors.

The devices are available as the standard products

listed in Table 1.

Table 1. Standard Products

1.25V Internal Reference

Model

AS1358

AS1359

Load Current

150mA

Output Voltage

Preset – 1.5 to 4.5V

Extremely-Low Quiescent Current: 40µA

Excellent Load/Line Transient

300mA

An integrated P-channel MOSFET pass transistor allows

the devices to maintain extremely low quiescent current

(40µA).

Overcurrent and Thermal Protection

TSOT23 5-pin Package

The AS1358/AS1359 uses an advanced architecture to

achieve ultra-low output voltage noise of 9µVRMS and a

power-supply rejection-ratio of better than 80dB (up to

10kHz).

3 Applications

The devices are ideal for mobile phones, wireless

phones, PDAs, handheld computers, mobile phone

base stations, Bluetooth portable radios and accesso-

ries, wireless LANs, digital cameras, personal audio

devices, and any other portable, battery-powered appli-

cation.

The AS1358/AS1359 requires only 1µF output capacitor

for stability at any load. When the LDO is disabled, cur-

rent consumption drops below 500nA.

The devices are available in a TSOT23 5-pin package.

Figure 1. Typical Application Circuit

Input

2V to 5.5V

Output

1.5V to 4.5V

OUT

CIN

1µF

AS1358/

AS1359

GND

CBYPASS

10nF

Off

BYPASS

COUT

1µF

SHDNN

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