LTC3630A

RECOMMENDED FOR NEW DESIGNS

High Efficiency, 76V 500mA Synchronous Step-Down Converter

Data Sheet (Rev. D) Product Selection Table
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Overview

  • Wide Operating Input Voltage Range: 4V to 76V
  • Synchronous Operation for Highest Efficiency
  • Internal High Side and Low Side Power MOSFETs
  • No Compensation Required
  • Adjustable 50mA to 500mA Maximum Output Current
  • Low Dropout Operation: 100% Duty Cycle
  • Low Quiescent Current: 12μA
  • Wide Output Range: 0.8V to VIN
  • 0.8V ±1% Feedback Voltage Reference
  • Precise RUN Pin Threshold
  • Internal and External Soft-Start
  • Programmable 1.8V, 3.3V, 5V or Adjustable Output
  • Few External Components Required
  • Low Profile (0.75mm) 3mm × 5mm DFN and Thermally-Enhanced MSE16 Packages
  • AEC-Q100 Qualified for Automotive Applications
LTC3630A
High Efficiency, 76V 500mA Synchronous Step-Down Converter
12.5V to 76V Input to 12V Output, 500mA Step-Down Converter Efficiency and Power Loss vs Load Current Product Package 1 Product Package 2
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Documentation

Data Sheet 1

User Guide 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Hot Swap Controllers 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
Ideal Diodes and PowerPath Controllers 1
LTC4417
RECOMMENDED FOR NEW DESIGNS Prioritized PowerPath™ Controller
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3630
  • LTC3630A
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
schematic 1
DC1877A

LTC3630AEDHC Demo Board (DFN) | Sync Buck, 4V ≤ VIN ≤ 76V, VOUT = 5V/3.3V/1.8V/Adj @ 500mA

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Product Details

Demonstration circuit 1877A is a 500mA output DC/DC power supply featuring the LTC3630A (DFN package), with 4V to 76V input range. The LTC3630A features high efficiency Burst Mode® operation and includes internal high and low side power switches. The board provides jumper selected output voltages of 1.8V, 3.3V, 5V and an option for additional voltages. LTC3630A has internal soft-start and a provision for increasing soft-start time.

eval board
schematic 2
DC2105A-A

LTC3630AEMSE Demo Board (MSOP) | 4V ≤ VIN ≤ 76V, VOUT = 1.8V/3.3V/5V/Adjustable @ 500mA

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Product Details

Demonstration circuit 2105A is a 500mA output DC/DC power supply. There are two versions: DC2105A-A is a board featuring LTC3630A in the exposed pad MSOP-16 package, with 4V to 76V input range; DC2105A-B is a board featuring LTC3630, with 4V to 65V input range. The LTC3630A operates in a high efficiency Burst Mode® operation and includes internal high and low side switches. The board provides jumper selected output voltages of 1.8V, 3.3V, 5V and an option for additional voltages. LTC3630A has internal soft-start and a provision for increasing soft-start time.
DC1877A
LTC3630AEDHC Demo Board (DFN) | Sync Buck, 4V ≤ VIN ≤ 76V, VOUT = 5V/3.3V/1.8V/Adj @ 500mA
DC1877A - Schematic
DC2105A-A
LTC3630AEMSE Demo Board (MSOP) | 4V ≤ VIN ≤ 76V, VOUT = 1.8V/3.3V/5V/Adjustable @ 500mA
DC2105A-A - Schematic

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