LTC3388

RECOMMENDED FOR NEW DESIGNS

20V High Efficiency Nanopower Step-Down Regulator

Part Models
16
1ku List Price
Starting From $3.54
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Part Details

  • 720nA Input IQ in Regulation (No Load), VIN = 4V
  • 820nA Input IQ in Regulation (No Load), VIN = 20V
  • 400nA Input IQ in UVLO
  • 2.7V to 20V Input Operating Range
  • Up to 50mA of Output Current
  • Pin Selectable Output Voltages:
    • 1.2V, 1.5V, 1.8V, 2.5V (LTC3388-1)
    • 2.8V, 3.0V, 3.3V, 5.0V (LTC3388-3)
  • High Efficiency Hysteretic Synchronous DC/DC Conversion
  • Standby Mode Disables Buck Switching
  • Available in 10-Lead MSE and 3mm × 3mm DFN Packages
LTC3388
20V High Efficiency Nanopower Step-Down Regulator
50mA Step-Down Converter Efficiency vs Load Current Product Package 1 Product Package 2
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Documentation

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
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PowerPath, Ideal Diodes, and Load Switches 1
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Surge Stopper, Overvoltage, and Overcurrent Protection 1
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Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
DC1658A-B

LTC3388EMSE-3 Demo Board | 2.8V ≤ VIN ≤ 20V, VOUT = 2.8V to 5V @ 50mA

Product Details

Demonstration Circuit DC1658A is a 20V High Efficiency Nanopower Step-Down Regulator featuring the LTC3388-1/ LTC3388-3. The LTC3388 is an ultralow quiescent current power supply designed to regulate the output voltage by means of a nanopower high efficiency synchronous buck regulator. The input current is only 720nA typical at no load while maintaining output voltage regulation, capable of supplying 50mA of load current. The LTC3388-1/ LTC3388-3 also in-corporates an accurate undervoltage lockout feature to disable the converter and maintain a low quiescent current state when the input voltage falls below 2.3V. In regulation, the LTC3388-1/LTC3388-3 enter 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. An additional standby mode disables the buck switching while the  output is in regulation for short duration loads requiring low ripple.

eval board
DC1658A-A

LTC3388EMSE-1 Demo Board | 2.7V ≤ VIN ≤ 20V, VOUT = 1.2V to 2.5V @ 50mA

Product Details

Demonstration Circuit DC1658A is a 20V High Efficiency Nanopower Step-Down Regulator featuring the LTC3388-1/ LTC3388-3. The LTC3388 is an ultralow quiescent current power supply designed to regulate the output voltage by means of a nanopower high efficiency synchronous buck regulator. The input current is only 720nA typical at no load while maintaining output voltage regulation, capable of supplying 50mA of load current. The LTC3388-1/ LTC3388-3 also incorporates an accurate undervoltage lockout feature to disable the converter and maintain a low quiescent current state when the input voltage falls below 2.3V. In regulation, the LTC3388-1/LTC3388-3 enter 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. An additional standby mode disables the buck switching while the  output is in regulation for short duration loads requiring low ripple.


 


DC1658A-B
LTC3388EMSE-3 Demo Board | 2.8V ≤ VIN ≤ 20V, VOUT = 2.8V to 5V @ 50mA
DC1658A-B - Schematic
DC1658A-A
LTC3388EMSE-1 Demo Board | 2.7V ≤ VIN ≤ 20V, VOUT = 1.2V to 2.5V @ 50mA
DC1658A-B - Schematic

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