STMicroelectronics ST1PS03 Synchronous Step-Down Converters

STMicroelectronics ST1PS03 Synchronous Step-Down Converters are nano-quiescent miniaturized synchronous step-down converters. The converters provide up to a 400mA output current with an input voltage ranging from 1.8V to 5.5V. The devices are 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_OUT from 1.6V to 3.3V can be dynamically selected.

Features

500nA input quiescent current at VIN = 3.6V (not switching)
92% typical efficiency at 10 mA load (VIN = 3.6V, VOUT = 2.5V)
100% duty cycle
1.8V to 5.5V input operating range
Undervoltage lockout: 1.57V (VIN falling, typ.)
Up to 400mA output current capability
Low power control operation for the best efficiency

Embedded soft-start circuit
Tiny external components: L = 2.2µH typ.
Selectable output voltages: 1.6V to 3.3V
Output voltage Power Good
±1.5% output voltage accuracy (VOUT, TA = 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
Smart watches, sport bands
Energy harvesting, wireless sensors
Wearable and fitness accessories

Industrial sensors, portable low power devices
Single-cell Li-Ion battery applications
Bluetooth® Low Energy
Zigbee

STMicroelectronics ST1PS03 Synchronous Step-Down Converters

Features

Applications

Videos

Application schematic

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