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

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 (RSEL) 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.

* Input Voltage: 2.5V to 16V

* Output Voltage: 0.8V to 5.5V

* Long Battery Life

* 70nA Shutdown Current

* 800nA Ultra-Low Quiescent Current (IQ)

* 86% Efficiency at 100μA Load at 7.6VIN, 3.3VOUT

* 95% Peak Efficiency at 7.6VIN, 3.3VOUT