Summary of MAXIM INTEGRATED MAX38650 NANOPOWER BUCK CONVERTER
Maxim Integrated's MAX38650 is a nanoPower buck converter delivering up to 100 mA with ultra-low 390 nA quiescent current and peak efficiency of 95%. Operating from 1.8 V to 5.5 V, it supports 100% duty cycle for low-dropout operation, offers single-resistor adjustable (MAX38650A) or preprogrammed (MAX38650B) outputs, and includes features such as reverse-current blocking, active discharge, and 5 nA shutdown. Packaged in a tiny 1.58 mm × 0.89 mm 6-pin WLP, it is specified from -40°C to +125°C for battery-powered applications requiring long life and small size.
Parts used in the MAX38650 NanoPower Buck Converter:
- MAX38650 buck converter IC (MAX38650A or MAX38650B)
- External resistor for VOUT adjustment (for MAX38650A)
- Input capacitor
- Output capacitor
- Inductor suitable for 100 mA switching
- PCB with footprint for 6-pin 2x3 WLP, 0.4 mm pitch
- Optional shutdown/control connection
Maxim Integrated MAX38650 nanoPower Buck Converter provides an ultra-low 390nA quiescent current and operates from a 1.8V to 5.5V input voltage. The MAX38650 supports load currents of up to 100mA with peak efficiencies of 95%. The MAX38650 offers high efficiency throughout the load range with a small total solution size. The device is ideal for battery applications where extended battery life is required.
The Maxim MAX38650 nanoPower Buck Converter supports 100% duty cycle operation allowing seamless transition as battery discharges and falls below the target output voltage. The MAX38650 utilizes a unique control scheme that allows ultra-low quiescent current and high efficiency over a wide output current range.
The MAX38650 Converter is offered in a space-saving, 1.58mm x 0.89mm, 6-pin wafer-level package (WLP) (2 x 3 bumps, 0.4mm pitch), and is specified over the -40°C to +125°C operating temperature range.
Features
- Extends battery life
- 390nA Ultra-low quiescent supply current
- 5nA Shutdown current
- 95% Peak efficiency and over 85% at 10µA
- Easy to use addresses popular operation
- 1.8V to 5.5V Input Range
- Single resistor-adjustable VOUT from 1.2V to 3.3V (MAX38650A)
- Preprogrammed VOUT from 1.2V to 5V (MAX38650B) in steps of 50mV
- 100% Duty cycle mode for low dropout operation
- ±1.5% Output voltage accuracy
- 100mA Load current
- Protects system in multiple use cases
- Reverse-current blocking in shutdown
- Active discharge feature
- Reduces size and increases reliability
- -40°C to +125°C Operating temperature range
- 1.58mm x 0.89mm, 0.4mm pitch, 6-pin (2 x 3) WLP
Read more: MAXIM INTEGRATED MAX38650 NANOPOWER BUCK CONVERTER
- What input voltage range does the MAX38650 support?
It supports an input range of 1.8 V to 5.5 V. - How much quiescent current does the MAX38650 consume?
The device has an ultra-low quiescent supply current of 390 nA. - Can the MAX38650 operate at 100% duty cycle?
Yes, it supports 100% duty cycle for low dropout operation. - What is the maximum load current supported?
The MAX38650 supports load currents up to 100 mA. - What output options are available for the MAX38650?
MAX38650A offers single resistor-adjustable VOUT from 1.2 V to 3.3 V; MAX38650B provides preprogrammed VOUT from 1.2 V to 5 V in 50 mV steps. - What are the shutdown and protection features?
It has a 5 nA shutdown current, reverse-current blocking in shutdown, and an active discharge feature. - What is the output voltage accuracy?
The output voltage accuracy is ±1.5%. - What package and temperature range does the MAX38650 come in?
It is offered in a 1.58 mm x 0.89 mm, 6-pin WLP (2 x 3 bumps, 0.4 mm pitch) and is specified from -40°C to +125°C.
