LTC3588-2 - Nanopower Energy Harvesting Power Supply with 14V Minimum VIN


  • 1500nA Input Quiescent Current (Output in Regulation – No Load, VIN = 18V)
  • 830nA Input Quiescent Current in UVLO, VIN = 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 VIN ≥ 20V
  • Available in 10-Lead MSE and 3mm × 3mm DFN Packages

Typical Application

LTC3588-2 Typical Application
LTC3588-2 Typical Application


The LTC®3588-2 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.

 Output Voltage (Switcher)UVLOQuiescent Current

Selectable 1.8V, 2.5V, 3.3V or 3.6V



950nA (No Load)

450nA (UVLO)


Selectable 3.45V, 4.1V, 4.5V or 5V



1,500nA (No Load)

830nA (UVLO)


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LTC3588EDD-2#PBF 3x3 DFN-10 DD E 05-08-1699 Yes
LTC3588EDD-2#TRPBF 3x3 DFN-10 DD E 05-08-1699 Yes
LTC3588EMSE-2#PBF MS-10E MSE E 05-08-1664 Yes
LTC3588EMSE-2#TRPBF MS-10E MSE E 05-08-1664 Yes
LTC3588IDD-2#PBF 3x3 DFN-10 DD I 05-08-1699 Yes
LTC3588IDD-2#TRPBF 3x3 DFN-10 DD I 05-08-1699 Yes
LTC3588IMSE-2#PBF MS-10E MSE I 05-08-1664 Yes
LTC3588IMSE-2#TRPBF MS-10E MSE I 05-08-1664 Yes

LTC3588-2 Package Drawing
LTC3588-2 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC3588EDD-2#PBF 3x3 DFN-10 E $4.22 $2.95 Yes
LTC3588EDD-2#TRPBF 3x3 DFN-10 E $3.01 Yes
LTC3588EMSE-2#PBF MS-10E E $4.22 $2.95 Yes
LTC3588EMSE-2#TRPBF MS-10E E $3.01 Yes
LTC3588IDD-2#PBF 3x3 DFN-10 I $4.96 $3.47 Yes
LTC3588IDD-2#TRPBF 3x3 DFN-10 I $3.53 Yes
LTC3588IMSE-2#PBF MS-10E I $4.96 $3.47 Yes
LTC3588IMSE-2#TRPBF MS-10E I $3.53 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1459B-B LTC3588EMSE-2 Demo Board | Piezoelectric Energy Harvesting Power Supply $200.00
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