BD70522GUL-EVK-101: 1.2V, 1.5V, ~ 3.2V, 3.3V @ 500mA, 2.5 ~ 5.5 Vin, 180nA Iq

Summary

The BD70522GUL-EVK-101 evaluation board is a power supply solution designed for battery powered devices. 180nA quiescent current and ULP (Ultra Low Power) mode enable excellent light load efficiency at 10µA load, extending battery life, while output currents up to 500mA are supported. Users can select from among 9 preset output voltages via the VSEL pin. And when the input voltage gets close to the output voltage, the IC enters 100% ON mode that stops switching operation.

The BD70522GUL is a Buck Converter featuring 180nA quiescent current and supports output current up to 500mA. The Constant ON-Time (COT) control with ULP (Ultra Low Power) mode provides superior transient response and extends battery life by providing excellent light load efficiency below 10µA load range. The output voltage can be selected from 9 pre-set voltages by VSEL pins. When the input voltage gets close to the output voltage, the IC enters 100% ON mode where the switching operation stops.

Specifications

Manufacturer	Rohm Semiconductor
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	BD70522GUL-EVK-101-ND
Eval Board Supplier	Rohm Semiconductor
Eval Board	Board not Stocked
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	1.2 V 1.5 V 1.8 V 2 V 2.5 V 2.8 V 3 V 3.2 V 3.3 V
Current Out	500 mA
Voltage In	2.5 ~ 5.5 V
Efficiency @ Conditions	>90%, 5V in, 3.6V @ 0.01 ~ 500 mA >90%, 3.6V in, 2.5V @ 0.004 ~ 500 mA >90%, 3.6V in, 1.8V @ 0.1 ~ 500 mA >85%, 2.6V in, 1.2V @ 0.008 ~ 400 mA
Voltage Out Range	1.2 ~ 3.3 V
Features	Light Load Mode Power Good Output Shutdown, Enable, Standby
Switching Frequency	Up to 1 MHz
Standby Current [Typical]	50 nA
Quiescent Current [Typical]	180 nA
Component Count + Extras	9 + 9
Internal Switch	Yes
Design Author	Rohm
Application / Target Market	Energy Harvesting Portable Devices RF: Home Automation Wearable Devices
Standby Current [Maximum]	1 µA
Quiescent Current [Maximum]	1 µA
Main I.C. Base Part	BD70522GUL
Date Created By Author	2017-11
Date Added To Library	2020-03