LT1176
LT1176-5
Info: : PRODUCTION
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LT1176
LT1176-5

Step-Down Switching Regulator

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $4.58
Features
  • 1.2A Onboard Switch
  • 100kHz Switching Frequency
  • Excellent Dynamic Behavior
  • DIP and Surface Mount Packages
  • Only 8mA Quiescent Current
  • Preset 5V Output Available
  • Operates Up to 35V Input
  • Micropower Shutdown Mode
Additional Details
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The LT1176 is a 1A monolithic bipolar switching regulator which requires only a few external parts for normal operation. The power switch, all oscillator and control circuitry and all current limit components are included on the chip. The topology is a classic positive buck configuration but several design innovations allows this device to be used as a positive-to-negative converter, a negative boost converter, and as a flyback converter. The switch output is specified to swing below ground.

The LT1176 uses a true analog multiplier in the feedback loop. This makes the device respond nearly instantaneously to input voltage fluctuations and makes loop gain independent of input voltage. As a result, dynamic behavior of the regulator is significantly improved over previous designs.

On-chip pulse by pulse current limiting makes the LT1176 nearly bust proof for output overloads or shorts. The input voltage range as a buck converter is 8V to 35V, but a self boot feature allows input voltages as low as 5V in the inverting and boost configurations.

The LT1176 is available in a low cost 8-lead DIP package with frequency preset at 100kHz and current limit at 1.7A. An adjustable output is offered as well as a preset 5V version. For further design details and application help, see the LT1074/LT1076 data sheet and Application Note 44.

Applications

  • Buck Converter with Output Voltage Range of 2.5V to 30V
  • Positive-to-Negative Converter
  • Negative Boost Converter
  • Multiple Output Buck Converter
Part Models 6
1ku List Price Starting From $4.58

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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_0241

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

LT1176CN8#PBF

PRODUCTION

LT1176CN8-5#PBF

PRODUCTION

Aug 10, 2022

- 22_0176

Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL

LT1176CSW#PBF

PRODUCTION

LT1176CSW#TRPBF

PRODUCTION

LT1176CSW-5#PBF

PRODUCTION

LT1176CSW-5#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

arrow down

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

arrow down

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

LT1176CN8#PBF

PRODUCTION

LT1176CN8-5#PBF

PRODUCTION

Aug 10, 2022

- 22_0176

arrow down

Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL

LT1176CSW#PBF

PRODUCTION

LT1176CSW#TRPBF

PRODUCTION

LT1176CSW-5#PBF

PRODUCTION

LT1176CSW-5#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

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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