STEVAL-1PS01AJR

STEVAL-1PS01AJR Data brief Evaluation board based on ST1PS01AJR 400 mA nano-quiescent synchronous step-down converter Features 1.8 V to 5.5 V input operating range Up to 400 mA output current capability Tiny external components: L=2.2 H typ. Selectable output voltages: 1.9 V to 2.8 V Output voltage Power Good Dynamic output voltage selection (D0, D1) Suitable for the following 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 WEEE and RoHS compliant (hardware only) Description Product summary The STEVAL-1PS01AJR evaluation board features the ST1PS01 miniaturized, nano- evaluation board quiescent, synchronous step-down converter designed for applications where high based on efficiency, PCB size and thickness are the key factors. The converter can provide up ST1PS01AJR to 400 mA output current with a 1.8 V to 5.5 V input voltage range. The output 400mA nano- STEVAL-1PS01AJR voltage can be dynamically adjusted from 1.9 V to 2.8 V using two digital control quiescent inputs. synchronous step- down converter Thanks to the enhanced peak current control (PCC), the ST1PS01 can achieve very 400 mA nano- high efficiency conversion using only a 2.2 H inductor and two small capacitors. quiescent Furthermore, the converter s advanced design circuitry reduces quiescent current to synchronous step- a minimum. down converter with ST1PS01 digital voltage selection and power good DB3865 - Rev 1 - April 2019 www.st.com For further information contact your local STMicroelectronics sales office.STEVAL-1PS01AJR Schematic diagram 1 Schematic diagram Figure 1. STEVAL-1PS01AJR board schematic CN2 VIN F 3 2 1 ST1PS01AJR TP2 CN5 R1 Header 3 B2 E1 EN P G O O D 2 1 TP1 CN1 JP1 L1 C3 VIN F A3 S W Header 2 V I N 4 VIN S CN6 3 GND S E3 VOUT F 2 C1 C2 V O U T GND F 4 VOUT S 1 3 GND S 2 Header 4 C3 C4 GND F 1 D2 G N D CN4 Header 4 D 0 D 1 VIN F 3 C1 A1 2 1 Header 3 CN3 VIN F 3 2 1 Header 3 DB3865 - Rev 1 page 2/4