STEVAL-1PS02B: 1.8 ~ 2.5V @ 400mA, 1.8 ~ 5.5V in

Summary

The STEVAL-1PS02B evaluation board demonstrates a smart converter design able to deliver up to 400 mA output current from a 1.8 V to 5.5 V input, with a dynamically adjustable 1.8 V to 2.5 V output voltage. The board features the ST1PS02BQTR nano-quiescent miniaturized synchronous step-down converter which implements enhanced peak current control (PCC) and advanced design circuitry to minimize quiescent current. The device embeds a controlled load switch to supply a subsystem with same voltage rail.

The STEVAL-1PS02B evaluation board highlights key application benefits made possible by the ST1PS02BQTR, including high efficiency and small PCB size and thickness, and is ideal for power management solutions in wearable applications and fitness accessories, personal tracking monitors, smart watches, sports bands, energy harvesting, wireless sensors, industrial sensors, portable low power devices, single cell Li-Ion battery applications, and Bluetooth® low energy and Zigbee applications.

1.8 V to 5.5 V input operating range
Up to 400 mA output current capability
Tiny external components: L=2.2 µH typ.
Dynamically selectable output voltages from 1.8 V to 2.5 V
Output voltage Power Good
Auxiliary load switch Vout2 (AUX control input)

Specifications

Manufacturer	STMicroelectronics
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	497-STEVAL-1PS02B-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	1.8 ~ 2.5V in 100mV Steps
Current Out	400 mA
Voltage In	1.8 ~ 5.5 V
Efficiency @ Conditions	>90%, 3.6V in, 2.5V @ 10 ~ 250mA >85%, 5V in, 1.8V @ 10 ~ 200mA >80%, 5V in, 2.5V @ 0.02 ~ 400mA >80%, 3.6V in, 1.8V @ 1 ~ 400mA
Voltage Out Range	1.8 ~ 2.5 V
Features	Auxiliary Power Load Switch Current Limit (Adj. or Fixed) Light Load Mode Power Good Output Shutdown, Enable, Standby Soft Start Under Voltage Protection, Brown-Out
Switching Frequency	Up to 2 MHz
Standby Current [Typical]	10 nA
Quiescent Current [Typical]	500 nA
Component Count + Extras	7 + 11
Internal Switch	Yes
Design Author	STMicroelectronics
Application / Target Market	Audio: MP3 Players Energy Harvesting Industry 4.0 RF: BlueTooth RF: Internet of Things (IoT) Sensor Node RF: Wireless Sensor Wearable Devices
Standby Current [Maximum]	200 nA
Quiescent Current [Maximum]	4 µA
Main I.C. Base Part	ST1PS02BQ
Date Created By Author	2020-04
Date Added To Library	2021-06