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ST1PS02 Datasheet(PDF) 1 Page - STMicroelectronics |
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ST1PS02 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 23 page  Features • 500 nA input quiescent current at VIN = 3.6 V (not switching) • 94% typical efficiency at 1 mA load (VIN = 3.6 V, VOUT = 3.3 V) • 100% duty cycle • 1.8 V to 5.5 V input operating range • Undervoltage lockout: 1.57 V (VIN falling, 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 (VOUT, TA = 25 °C) • Dynamic output voltage selection (D0, D1 and D2) • Auxiliary load switch Vout2 (AUX control 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 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 two digital control inputs, a VOUT from 1.8 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. Product status link ST1PS02 400 mA nano-quiescent synchronous step-down converter with digital voltage selection, Power Good and AUX switch ST1PS02 Datasheet DS13206 - Rev 1 - February 2020 For further information contact your local STMicroelectronics sales office. www.st.com |
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