MAX18002

RECOMMENDED FOR NEW DESIGNS

500mV to 5.5V Input, Ultrasonic Boost Converter with Short-Circuit Protection and True Shutdown

Analog Devices MAX18002 Product Info

10 February 2026 6

Features

0.5V to 5.5V Input Voltage
1.8V Minimum Start-Up Voltage
2.5V to 5.5V (in 100mV Steps) Output Voltage
3.6A Cycle-by-Cycle Inductor Current Limit
Automatic Pass-Through Mode when V_IN > V_OUT
Ultrasonic Mode (F_SW at 29kHz typ) to Alleviate Acoustic Audible Interference for Light-Load Operation
True-Shutdown Mode
- 7nA Shutdown Current
- Output Disconnects from Input Without Forward or Reverse Current

Output Short-Circuit Protection
Thermal-Shutdown Protection
95% Peak Efficiency (3.6V_IN, 5V_OUT)
1.07mm x 1.57mm, 0.5mm Pitch, 6-Bump WLP
-40°C to +125°C Operating Temperature Range

Part details & applications

The MAX18002 is an ultrasonic, high-performance boost converter with an input voltage range of 0.5V to 5.5V and a switching current limit of 3.6A. The IC operates in ultrasonic mode (USM) (FSW at 29kHz typ) at low loads and transitions into skip mode and continuous conduction mode (CCM) of operation at higher load currents. The MAX18002 can operate in pass-through mode when the input voltage is higher than the output voltage.

The output voltage can be varied between 2.5V and 5.5V (USM disabled for V_OUT > 5V) using a single RSEL resistor.

The MAX18002 features a True Shutdown™ mode which disconnects V_IN and V_OUT when the EN pin is pulled low. It also features a short-circuit protection circuitry that limits the current to 700mA when V_OUT < 0.5V and automatically restarts the part when the fault is removed. The thermal-shutdown protection disables the part when the junction temperature crosses +165˚C (typ).

The MAX18002 is available in 1.07mm x 1.57mm, 6- bump, wafer-level package (WLP).

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