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Product attributes Property Value
Manufacturer Linear Technology
Product Series
Packaging Bulk |
Function Step-Down
Output Configuration Positive
Topology Buck, SEPIC
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 5V
Voltage - Input (Max) 25V
Voltage - Output (Min/Fixed) 2.42V
Voltage - Output (Max) 21.5V
Current - Output 1.5A (Switch)
Frequency - Switching 500kHz
Synchronous Rectifier No
Operating Temperature -
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package 16-SO
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LT1376IS is a 500kHz monolithic buck mode switching regulator from Linear Technology. It accepts a wide input voltage from 5V to 25V and provides an adjustable output from 2.42V to 21.5V. The internal 1.5A switch makes it suitable for medium-current applications. Its high switching frequency allows for small external components, reducing board space. The device can also be configured as a SEPIC converter for added design flexibility. It is housed in a 16-pin SOIC package, making it easy to integrate into various systems.

  • Wide Input Voltage Range: Operates from 5V to 25V, accommodating a variety of industrial and automotive power sources.
  • High Switching Frequency: The 500kHz operation minimizes the size of external inductors and capacitors, saving PCB space.
  • Design Flexibility: Can be used as a Buck or SEPIC converter, providing options for different input/output voltage requirements.
  • Adjustable Output: The output voltage can be set from 2.42V to 21.5V with external resistors, offering versatility.
  • Proven Reliability: From Linear Technology, known for robust and reliable power management ICs.

Industrial Control Systems

The LT1376IS's wide 5V to 25V input range makes it ideal for industrial environments where supply rails can vary. It can efficiently step down to 5V or 3.3V for logic and sensor circuits.

Automotive Power Supplies

In automotive applications, the input voltage can fluctuate significantly. This regulator handles 12V and 24V battery systems, providing a stable output for infotainment, instrumentation, and control modules.

Telecom and Networking Equipment

With a 500kHz switching frequency, the LT1376IS allows for compact power supplies in telecom infrastructure, converting 12V or 24V rails to lower voltages for DSPs, ASICs, and line cards.

SEPIC Converters for Wide-Ranging Inputs

When configured as a SEPIC, it can regulate an output voltage that is within, above, or below the input range. This is useful in battery-powered systems where the battery voltage drops below the desired output.

Distributed Power Systems

It can serve as a secondary-stage regulator in a distributed power architecture, taking an intermediate bus voltage (e.g., 12V) and generating a clean, regulated low-voltage rail for sensitive electronics.

Portable Instrumentation

For battery-powered test and measurement equipment, the LT1376IS provides a reliable and efficient way to generate multiple voltage rails from a single battery source, extending operational life.

Q: What type of converter is the LT1376IS?
A: It is a step-down (Buck) switching regulator, also configurable as a SEPIC converter.
Q: What is the input voltage range?
A: The input voltage range is 5V to 25V.
Q: What is the output voltage range?
A: The output voltage is adjustable from 2.42V up to 21.5V.
Q: What is the maximum switch current?
A: The internal switch is rated for a maximum of 1.5A.
Q: What is the switching frequency?
A: The switching frequency is fixed at 500kHz.
Q: What package is available?
A: It is available in a 16-pin SOIC package.
Base Product Number : LT1376IS
1.5A Switch 16-SOIC 500kHz 5V-25V Automotive Buck DC-DC Converter Industrial Linear Technology SEPIC
Q: What type of converter is the LT1376IS?
A: It is a step-down (Buck) switching regulator, also configurable as a SEPIC converter.
Q: What is the input voltage range?
A: The input voltage range is 5V to 25V.
Q: What is the output voltage range?
A: The output voltage is adjustable from 2.42V up to 21.5V.
Q: What is the maximum switch current?
A: The internal switch is rated for a maximum of 1.5A.
Q: What is the switching frequency?
A: The switching frequency is fixed at 500kHz.
Q: What package is available?
A: It is available in a 16-pin SOIC package.