LTC1877

PRODUCTION

High Efficiency Monolithic Synchronous Step-Down Regulator

Part Models
4
1ku List Price
Starting From $3.64
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Part Details

  • High Efficiency: Up to 95%
  • Very Low Quiescent Current: Only 10μA During Operation
  • 600mA Output Current at VIN = 5V
  • 2.65V to 10V Input Voltage Range
  • 550kHz Constant-Frequency Operation
  • No Schottky Diode Required
  • Low Dropout Operation: 100% Duty Cycle
  • Synchronizable from 400kHz to 700kHz
  • Selectable Burst Mode® Operation or Pulse-Skipping Mode
  • 0.8V Reference Allows Low Output Voltages
  • Shutdown Mode Draws < 1μA Supply Current
  • ±2% Output Voltage Accuracy
  • Current Mode Control for Excellent Line and Load Transient Response
  • Overcurrent and Overtemperature Protected
  • Available in 8-Lead MSOP Package
LTC1877
High Efficiency Monolithic Synchronous Step-Down Regulator
High Efficiency Step-Down Converter Efficiency vs Output Current Product Package 1
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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
LTC2974 RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Dual-Supply Monitors 1
LTC2960 RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Silicon Oscillators 2
LTC6908 Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation
LTC6909 PRODUCTION 1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation
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Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • LTC1877
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
DC290A-A

LTC1877EMS8 Demo Board | 2.65V to 10V Input, 1.5V to 3.3VOUT @ 600mA

Product Details

Demonstration circuit DC290 is a constant-frequency step-down converter using an LTC1877 or an LTC1878 monolithic synchronous regulator. The LTC1878 has an input voltage range of 2.65V < VIN < 6V and the LTC1877 has an input voltage range of 2.65V < VIN < 10V. The LTC1878 is optimized for low voltage operation and is ideally suited for single Li-Ion cell or 3-NiCd/NiMH cell applications. The LTC1877, with its higher voltage capability, is ideally suited for two Li-Ion cells or 4- to 6-NiCd/NiMH cell applications.

DC290A-A
LTC1877EMS8 Demo Board | 2.65V to 10V Input, 1.5V to 3.3VOUT @ 600mA
DC290A-A - Schematic

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