Datasheet > ST1PS02

ST1PS02

更新时间： 2023-12-20 18:44:55

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
26页	2564K
描述
400 mA nano-quiescent synchronous step-down converter with digital voltage selection, Power Good and AUX switch

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ST1PS02 数据手册

ST1PS02

Datasheet

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

selection, Power Good and AUX 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.

Settable inductor current limitation

Selectable output voltages: 1.0 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)

Auxiliary load switch Vout2 (AUX control input)

Available in TQFN12 package

Applications

•

Wearable applications

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Personal tracking monitors

Smart watches, sport bands

ST1PS02

Energy harvesting, wireless sensors

Wearable and fitness accessories

Industrial sensors, portable low power devices

Single cell Li-Ion battery applications

•

Bluetooth^®low energy

Zigbee

Description

The ST1PS02 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 1.0 V to 3.3 V can be dynamically

selected. Thanks to the enhanced PCC (peak current control) the ST1PS02 reaches

very high efficiency conversion using just a 2.2 µH inductor and two small capacitors.

The device embeds a controlled load switch to supply a subsystem with same

voltage rail. Advanced design circuitry is implemented to minimize the quiescent

current. The device is available in thin plastic package.

DS13206 - Rev 4 - July 2021

For further information contact your local STMicroelectronics sales office.

www.st.com

12 3 4 5 6 7...26

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