MAX38650
RECOMMENDED FOR NEW DESIGNSTiny 1.8V to 5.5V Input, 390nA IQ, 100mA nanoPower Buck Converter with 100% Duty Cycle Operation
Industry’s Only High Efficiency, 100% Duty Cycle Buck with nanoPower
- Part Models
- 2
- 1ku List Price
- Starting From $1.10
Overview
- 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
The MAX38650 is a nanoPower, ultra-low 390nA quiescent current, buck (step-down) DC-DC converter operating from 1.8V to 5.5V input voltage and supporting load currents of up to 100mA with peak efficiencies of 95%. While in shutdown, there is only 5nA of shutdown current. The device offers ultra-low quiescent current, small total solution size, and high efficiency throughout the load range. The device is ideal for battery applications where long battery life is a must. The MAX38650 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 device is offered in a space-saving, 1.58mm x 0.89mm, 6-pin wafer-level package (WLP) (2 x 3 bumps, 0.4mm pitch). The part is specified over the -40°C to +125°C operating temperature range.
Applications
- Low-Voltage Industrial Applications
- Portable Space-Constrained Consumer Products
- Single Li-ion and Coin Cell Battery Products
- Wearable Devices, Ultra-Low-Power IoT, NB IoT, and Bluetooth Low Energy (BLE)
- Wired, Wireless, Industrial Products
Documentation
Data Sheet 1
Technical Articles 1
Video 1
Rarely Asked Question 1
Webcast 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX38650AANT+ | WLCSP | ||
| MAX38650AANT+T | WLCSP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 21, 2025 - 2453N ASSEMBLY |
||
| MAX38650AANT+ | PRODUCTION | |
| MAX38650AANT+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
ADI Power Studio™ Designer
ADI Power Studio™ Designer is the next-generation tool for IC-level, power supply design, guiding engineers to faster, validated solutions.
Learn MoreSIMPLIS Models 1
Evaluation Kits
Evaluation Kit for the MAX38650
Resources
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