LTC1625

PRODUCTION

No RSENSE™ Current Mode Synchronous Step-Down Switching Regulator

Data Sheet
Part Models
8
1ku List Price
Starting From $6.52
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Part Details

  • Highest Efficiency Current Mode Controller
  • No Sense Resistor Required
  • Stable High Current Operation
  • Dual N-Channel MOSFET Synchronous Drive
  • Wide VIN Range: 3.7V to 36V
  • Wide VOUT Range: 1.19V to VIN
  • ±1% 1.19V Reference
  • Programmable Fixed Frequency with Injection Lock
  • Very Low Drop Out Operation: 99% Duty Cycle
  • Forced Continuous Mode Control Pin
  • Optional Programmable Soft Start
  • Pin Selectable Output Voltage
  • Foldback Current Limit
  • Output Overvoltage Protection
  • Logic Controlled Micropower Shutdown: IQ < 30µA
  • Available in 16-Lead Narrow SSOP and SO Packages
LTC1625
No RSENSE™ Current Mode Synchronous Step-Down Switching Regulator
Figure 1. High Efficiency Step-Down Converter Product Package 1 Efficiency vs Load Current
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Application Note 1

Design Note 3

Technical Articles 4

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
Circuit Monitors 1
LTC2960
RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Power System Managers & Sequencers 1
LTC2974
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Protection Switches & Controllers 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
Switching Regulators & Controllers 1
LTC3880
RECOMMENDED FOR NEW DESIGNS Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LTC1625
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
DC2008A

LTC1625IGN Demo Board | 4.5V ≤ VIN ≤ 28V; VOUT = 3.3V @ 15A

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Product Details

Demonstration circuit DC2008 is DC/DC buck converter featuring the LTC1625 constant frequency current mode buck controller. The DC2008A operates over a 4.5V to 28V input and provides 15A of output current as shown in Figure 3. The 225kHz constant frequency operation results in a small and efficient circuit. The converter provides high output voltage accuracy (typically ±3%) over a wide load range with no minimum load requirement. The demonstration circuit can be easily modified to generate different output voltages.


 
DC2008A
LTC1625IGN Demo Board | 4.5V ≤ VIN ≤ 28V; VOUT = 3.3V @ 15A
DC2008A - Schematic

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