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LTC3588-1 Dataheets PDF



Part Number LTC3588-1
Manufacturers Linear Technology
Logo Linear Technology
Description Piezoelectric Energy Harvesting Power Supply
Datasheet LTC3588-1 DatasheetLTC3588-1 Datasheet (PDF)

FEATURES nn 950nA Input Quiescent Current (Output in Regulation – No Load) nn 450nA Input Quiescent Current in UVLO nn 2.7V to 20V Input Operating Range nn Integrated Low-Loss Full-Wave Bridge Rectifier nn Up to 100mA of Output Current nn Selectable Output Voltages of 1.8V, 2.5V, 3.3V, 3.6V nn High Efficiency Integrated Hysteretic Buck DC/DC nn Input Protective Shunt – Up to 25mA Pull-Down at VIN ≥ 20V nn Wide Input Undervoltage Lockout (UVLO) Range nn Available in 10-Lead MSE and 3mm × 3mm DFN .

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FEATURES nn 950nA Input Quiescent Current (Output in Regulation – No Load) nn 450nA Input Quiescent Current in UVLO nn 2.7V to 20V Input Operating Range nn Integrated Low-Loss Full-Wave Bridge Rectifier nn Up to 100mA of Output Current nn Selectable Output Voltages of 1.8V, 2.5V, 3.3V, 3.6V nn High Efficiency Integrated Hysteretic Buck DC/DC nn Input Protective Shunt – Up to 25mA Pull-Down at VIN ≥ 20V nn Wide Input Undervoltage Lockout (UVLO) Range nn Available in 10-Lead MSE and 3mm × 3mm DFN Packages APPLICATIONS nn Piezoelectric Energy Harvesting nn Electro-Mechanical Energy Harvesting nn Wireless HVAC Sensors nn Mobile Asset Tracking nn Tire Pressure Sensors nn Battery Replacement for Industrial Sensors nn Remote Light Switches nn Standalone Nanopower Buck Regulator LTC3588-1 Nanopower Energy Harvesting Power Supply DESCRIPTION The LTC®3588-1 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 wide hysteresis window allows charge to accumulate on an input capacitor until the buck converter can efficiently transfer a portion of the stored charge to the output. In regulation, the LTC3588-1 enters a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to maintain regulation. Four output voltages, 1.8V, 2.5V, 3.3V and 3.6V, are pin selectable with up to 100mA of continuous output current; however, the output capacitor may be sized to service a higher output current burst. An input protective shunt set at 20V enables greater energy storage for a given amount of input capacitance. 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 owners. TYPICAL APPLICATION 100mA Piezoelectric Energy Harvesting Power Supply CSTORAGE 25V 1µF 6V 4.7µF 6V MIDE V21BL PZ1 PZ2 VIN LTC3588-1 SW VOUT CAP PGOOD VIN2 D0, D1 GND 35881 TA01 10µH 2 OUTPUT VOLTAGE SELECT VOUT 47µF 6V VOLTAGE (V) LTC3588-1 3.3V Regulator Start-Up Profile 22 20 CSTORAGE = 22µF, COUT = 47µF NO LOAD, IVIN = 2µA 18 16 14 VIN 12 10 8 6 4 VOUT 2 PGOOD = LOGIC 1 0 0 200 400 600 TIME (s) 35881 TA01b For more information www.linear.com/LTC3588-1 35881fc 1 LTC3588-1 ABSOLUTE MAXIMUM RATINGS (Note 1) VIN Low Impedance Source........................ –0.3V to 18V* Current Fed, ISW = 0A....................................... 25mA† PZ1, PZ2............................................................0V to VIN D0, D1...............–0.3V to [Lesser of (VIN2 + 0.3V) or 6V] CAP....................... [Higher of –0.3V or (VIN – 6V)] to VIN VIN2.................... –0.3V to [Lesser of (VIN + 0.3V) or 6V] * VIN has an internal 20V clamp † For t < 1ms and Duty Cycle < 1%, Absolute Maximum Continuous Current = 5mA VOUT.....................–0.3V to Lesser of (VIN2 + 0.3V) or 6V PGOOD............... –0.3V to Lesser of (VOUT + 0.3V) or 6V IPZ1, IPZ2.............................................................. ±50mA ISW....................................................................... 350mA Operating Junction Temperature Range (Notes 2, 3)................................................. –40 to 125°C Storage Temperature Range.......................–65 to 150°C Lead Temperature (Soldering, 10 sec) MSE Only........................................................... 300°C PIN CONFIGURATION TOP VIEW PZ1 1 PZ2 2 CAP 3 VIN 4 SW 5 10 PGOOD 9 D0 11 GND 8 D1 7 VIN2 6 VOUT DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 43°C/W, θJC = 7.5°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB TOP VIEW PZ1 1 10 PGOOD PZ2 2 CAP 3 VIN 4 11 GND 9 D0 8 D1 7 VIN2 SW 5 6 VOUT MSE PACKAGE 10-LEAD PLASTIC eMSOP TJMAX = 125°C, θJA = 45°C/W, θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3588EDD-1#PBF LTC3588EDD-1#TRPBF LFKY 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3588IDD-1#PBF LTC3588IDD-1#TRPBF LFKY 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3588EMSE-1#PBF LTC3588EMSE-1#TRPBF LTFKX 10-Lead Plastic eMSOP –40°C to 125°C LTC3588IMSE-1#PBF LTC3588IMSE-1#TRPBF LTFKX 10-Lead Plastic eMSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ This product is only offered in trays. For more information go to: http://www.linear.com/packaging/ .


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