MAX77505

RECOMMENDED FOR NEW DESIGNS

16V Input, 4.6A Switching Current Low IQ Buck Converter 16V Input, 4.6A/2.3A Switching Current Low IQ Buck Converter

Analog Devices MAX77505 Product Info

10 February 2026 4

Features

Input Voltage: 2.5V to 16V
Output Voltage: 0.8V to 5.5V
Long Battery Life
- 70nA Shutdown Current
- 800nA Ultra-Low Quiescent Current (I_Q)
- 86% Efficiency at 100μA Load at 7.6V_IN, 3.3V_OUT
- 95% Peak Efficiency at 7.6V_IN, 3.3V_OUT

POKB Output (Open-Drain)
SEL Pin for Output Voltage Selection
Protections Features
- Cycle-by-Cycle Inductor Peak Current Limit
- Short Circuit, Undervoltage Lockout (UVLO), and Thermal Protection
FC2QFN-10 Package (2.0mm x 2.0mm x 0.55mm)

Part details & applications

The MAX77505 is a low-quiescent current (800nA typ), high-efficiency hysteretic buck converter operating from a 2.5V to 16V input voltage range. The device offers high efficiency over the entire load range. Hence, it is ideal for either a primary battery or four alkaline batterypowered applications, which require long standby/idling time with short working time, such as asset tracking and door-lock devices.

A resistor (R_SEL) selects one of thirty preset output voltages between 0.8V and 5.5V. The device has input undervoltage lockout, cycle-by-cycle switch current limit, and thermal shutdown to protect the system and the device itself. The device is available in a 10-lead FC2QFN package (2.0mm x 2.0mm x 0.55mm).

APPLICATIONS

2-3 Cell Li+ Battery Applications
4-Cell Alkaline Battery Applications
IoT, Wearable Devices
Smart Meter, Door Locks, Asset Trackers, etc.

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