LTC3588-2

RECOMMENDED FOR NEW DESIGNS

Nanopower Energy Harvesting Power Supply with 14V Minimum VIN

Analog Devices LTC3588-2 Product Info

10 February 2026 4

Features

1500nA Input Quiescent Current (Output in Regulation – No Load, V_IN = 18V)
830nA Input Quiescent Current in UVLO, V_IN = 12V
14V to 20V Input Operating Range
Integrated Low-Loss Full-Wave Bridge Rectifier
16V UVLO Improves Power Utilization from High Voltage Current Limited Inputs

Up to 100mA of Output Current
High Efficiency Integrated Hysteretic Buck DC/DC
Selectable Output Voltages: 3.45V, 4.1V, 4.5V, 5.0V
Input Protective Shunt – Up to 25mA Pull-Down at V_IN ≥ 20V
Available in 10-Lead MSE and 3mm × 3mm DFN Packages

Part details & applications

The LTC3588-2 integrates a low-loss full-wave bridge rectifier with a high efficiency buck converter to form a complete energy harvesting solution optimized for high output impedance energy sources such as piezoelectric, solar, or magnetic transducers.

An ultralow quiescent current undervoltage lockout (UVLO) mode with a 16V rising threshold enables efficient energy extraction from sources with high open circuit voltages. This energy is transferred from the input capacitor to the output via a high efficiency synchronous buck regulator. The 16V UVLO threshold also allows for input to output current multiplication through the buck regulator. The buck features a sleep state that minimizes both input and output quiescent currents while in regulation.

Four output voltages of 3.45V, 4.1V, 4.5V and 5.0V are pin selectable with up to 100mA of continuous output current, and suit Li-Ion and LiFePO₄ batteries as well as supercapacitors. An input protective shunt set at 20V provides overvoltage protection.


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