Datasheet LTC3588-2 (Analog Devices)

LTC3588-2 Nanopower Energy Harvesting Power Supply with 14V Minimum VIN
FEATURES DESCRIPTION
n
1500nA Input Quiescent Current (Output in
The LTC®3588-2 integrates a low-loss full-wave bridge
Regulation – No Load, VIN = 18V)
rectifier with a high efficiency buck converter to form a n
830nA Input Quiescent Current in UVLO, VIN = 12V
complete energy harvesting solution optimized for high n
14V to 20V Input Operating Range
output impedance energy sources such as piezoelectric, n
Integrated Low-Loss Full-Wave Bridge Rectifier
solar, or magnetic transducers. n
16V UVLO Improves Power Utilization from High
An ultralow quiescent current undervoltage lockout (UVLO)
Voltage Current Limited Inputs
mode with a 16V rising threshold enables efficient energy n
Up to 100mA of Output Current
extraction from sources with high open circuit voltages. n High Efficiency Integrated Hysteretic Buck DC/DC This energy is transferred from the input capacitor to the n Selectable Output Voltages: 3.45V, 4.1V, 4.5V, 5.0V output via a high efficiency synchronous buck regulator. n Input Protective Shunt – Up to 25mA Pull-Down at The 16V UVLO threshold also allows for input to output VIN ≥ 20V current multiplication through the buck regulator. The n Available in 10-Lead MSE and 3mm × 3mm DFN buck features a sleep state that minimizes both input and Packages output quiescent currents while in regulation. Four output voltages of 3.45V, 4.1V, 4.5V and 5.0V are
APPLICATIONS
pin selectable with up to 100mA of continuous output n Piezoelectric Energy Harvesting current, and suit Li-Ion and LiFePO4 batteries as well as n Electro-Mechanical Energy Harvesting supercapacitors. An input protective shunt set at 20V n Low Power Battery Charging provides overvoltage protection. n Wireless HVAC Sensors L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective n Mobile Asset Tracking owners. n Tire Pressure Sensors n Battery Replacement for Industrial Sensors
TYPICAL APPLICATION High Voltage Piezoelectric Energy Harvesting Power Supply LTC3588-2 5.0V Regulator Start-Up Profile
20 CIN = 10µF, CSTORAGE = 47µF VIN 18 NO LOAD, IVIN = 2µA MIDE V25W 16 14 PZ1 PZ2 22µH V 12 IN SW VOUT LTC3588-2 1µF V C 10 OUT STORAGE 6V 6V TAGE (V) CAP PGOOD 8 10µF VOL 2 25V V OUTPUT IN2 D0, D1 6 V VOLTAGE OUT GND 4.7µF SELECT 4 6V 35882 TA01 2 PGOOD = LOGIC 1 0 0 200 400 600 TIME (sec) 35882 TA01b 35882fc For more information www.linear.com/LTC3588-2 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Revision History Typical Application Related Parts