LTC1875
Info: : PRODUCTION
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LTC1875

15µA Quiescent Current 1.5A Monolithic Synchronous Step-Down Regulator

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $4.19
Features
  • High Efficiency: Up to 95%
  • Low Quiescent Current: Only 15µA with No Load
  • 550kHz Constant Frequency Operation
  • 2.65V to 6V Input Voltage Range
  • VOUT from 0.8V to VIN, IOUT to 1.5A
  • True PLL Frequency Locking from 350kHz to 750kHz
  • Power Good Output Voltage Monitor
  • Low Dropout Operation: 100% Duty Cycle
  • Burst Mode® or Pulse Skipping Operation
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Shutdown Mode Draws <1µA Supply Current
  • ±2% Output Voltage Accuracy
  • Overcurrent and Overtemperature Protected
  • Available in 16-Lead SSOP Package
Additional Details
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The LTC1875 is a high efficiency 1.5A monolithic synchronous buck regulator using a constant frequency, current mode architecture. Operating supply current is only 15µA with no load and drops to <1µA in shutdown. The input supply voltage range of 2.65V to 6V makes the LTC1875 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.

The switching frequency is internally set to 550kHz, allowing the use of small surface mount inductors and capacitors. For noise sensitive applications, the LTC1875 can be externally synchronized from 350kHz to 750kHz. Burst Mode operation is inhibited during synchronization or when the SYNC/MODE pin is pulled low.

The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with a 0.8V feedback reference voltage. The LTC1875 is available in a 16-lead SSOP package.

Applications

  • Portable Computers
  • Portable Instruments
  • Wireless Modems
Part Models 2
1ku List Price Starting From $4.19

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

Epoxy Change from Henkel 8290 to 8290A for GN Package

Apr 6, 2022

- 22_0066

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC1875EGN#PBF

PRODUCTION

LTC1875EGN#TRPBF

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

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Epoxy Change from Henkel 8290 to 8290A for GN Package

Apr 6, 2022

- 22_0066

arrow down

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC1875EGN#PBF

PRODUCTION

LTC1875EGN#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC432B

LTC1875EGN | High Efficiency Synchronous Step-Down Regulator, 2.65V - 6V Input, 1.8V/2.5V/3.3VOUT @ 1.5A

Tools & Simulations

Tools & Simulations 1

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.

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