Datasheet > ST1PS03

ST1PS03

更新时间： 2023-12-20 18:46:08

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		开关转换器
页数	文件大小	规格书
25页	3127K
描述
400mA Nano-Quiescent同步整流降压转换器，具有数字电压选择、“供电正常”和独立的负载开关

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ST1PS03 数据手册

ST1PS03

Datasheet

400 mA nano-quiescent synchronous step-down converter with digital voltage

selection, Power Good and load switch

Features

•

500 nA input quiescent current at V_IN= 3.6 V (not switching)

92% typical efficiency at 10 mA load (V_IN= 3.6 V, V_OUT= 2.5 V)

100% duty cycle

1.8 V to 5.5 V input operating range

Undervoltage lockout: 1.57 V (V_INfalling, typ.)

Up to 400 mA output current capability

Low power control operation for the best efficiency

Embedded soft-start circuit

Tiny external components: L = 2.2 µH typ.

Selectable output voltages: 1.6 V to 3.3 V

Output voltage Power Good

±1.5% output voltage accuracy (V_OUT, T_A= 25 °C)

Dynamic output voltage selection (D0, D1 and D2)

Load switch controlled by AUX input

Available in TQFN12 package

Applications

•

Wearable applications

Personal tracking monitors

Product status link

Smart watches, sport bands

Energy harvesting, wireless sensors

Wearable and fitness accessories

Industrial sensors, portable low power devices

Single cell Li-Ion battery applications

ST1PS03

•

Bluetooth^®Low Energy

Zigbee

Description

The ST1PS03 is a nano-quiescent miniaturized synchronous step-down converter,

which is able to provide up to 400 mA output current with an input voltage ranging

from 1.8 V to 5.5 V. This converter is specifically designed for applications where high

efficiency, PCB size and thickness are the key factors.

The output voltage can be set using three digital control inputs, a V_OUTfrom 1.6 V

to 3.3 V can be dynamically selected. Thanks to the enhanced PCC (peak current

control) the ST1PS03 reaches very high efficiency conversion using just a 2.2 µH

inductor and two small capacitors. An advanced design circuitry is developed to

minimize the quiescent current. The device embeds a controlled switch accessible

from VIN_AUX, to supply a subsystem. Finally, it is available in thin plastic package.

DS13801 - Rev 1 - September 2021

www.st.com

For further information contact your local STMicroelectronics sales office.

12 3 4 5 6 7...25

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