Datasheet > AS1333-BWLT

AS1333-BWLT

更新时间： 2022-12-27 17:49:42

品牌	Logo	应用领域
艾迈斯 - AMSCO		转换器便携式
页数	文件大小	规格书
16页	1695K
描述
650mA, Step Down DC/DC Converter for Portable Applications

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AS1333-BWLT 数据手册

Data Sheet

AS1333

650mA, Step Down DC/DC Converter for Portable Applications

1 General Description

2 Key Features

ꢀ

PWM Switching Frequency: 2MHz

Single Lithium-Ion Cell Operation

Fixed Output Voltage (3.09V)

The AS1333 is a step-down DC-DC converter designed

to power portable applications from a single Li-Ion

battery. The device also achieves high-performance in

mobile phones and other applications requiring low

dropout voltage.

Maximum load capability of 650mA

High Efficiency (96% Typ at 3.6VIN, 3.09VOUT at

400mA) from internal synchronous rectification

The AS1333 steps down an input voltage of 3.25V to

5.5V to a fixed output voltage of 3.09V.

ꢀ

Current Overload Protection

Thermal Overload Protection

Soft Start

Fixed-frequency PWM operation minimizes RF

interference. Shutdown function turns the device off and

reduces battery consumption to 0.01µA (typ.).

The AS1333 is available in a 8-pin WL-CSP package. A

high switching frequency (2 MHz) allows use of tiny

surface-mount components. Only three small external

surface-mount components, an inductor and two

ceramic capacitors are required.

Low Dropout Voltage (140 mΩ Typ PFET)

8-pin WL-CSP

3 Applications

The AS1333 is an ideal solution for cellular phones,

hand-held radios, RF PC cards, battery powered RF

devices, and RFIC chipsets.

Figure 1. Typical Application Circuit

VIN

VDD

PVIN

10 µF

3.3 µH

VOUT

3.09V

AS1333

10 µF

AGND

PGND

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