National Semiconductor LM2655 Datasheet

LM2655 2.5A High Efficiency Synchronous Switching Regulator is a high efficiency, compact, low cost DC/DC converter.


National Semiconductor LM2655 Datasheet - cover page
Brand
National Semiconductor
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
16
File format
PDF
File size
773 KB
Published
08 May, 2012
Updated
30 September, 2023
MD5 checksum
B884040D6E022773A144C5115AAC7D48

About this manual

The LM2655 is a 2.5 A current‑mode controlled PWM step‑down switching regulator that can operate in synchronous or asynchronous mode. It offers high efficiency (>90%) with an internal low ON‑resistance MOSFET and a low‑quiescent‑current design, making it suitable for portable applications.

The datasheet includes a detailed pin description, electrical characteristics, typical performance curves, layout recommendations, and ordering information. It also contains safety notices such as the life‑support policy and banned‑substance compliance details.

What's inside

  • General Description
  • Features
  • Applications
  • Pin Description
  • Electrical Characteristics
  • Typical Performance Characteristics
  • Typical PC Board Layout
  • Physical Dimensions
  • Life Support Policy
  • Banned Substance Compliance

Specifications

Maximum Output Current2.5 A
Efficiencyup to 96 %
Switching Frequency300 kHz
Quiescent Current (Shutdown Pin Floating)1.7 mA
Shutdown Current<12 µA
Package16‑pin TSSOP
Thermal Shutdown Temperature165 °C

Frequently asked questions

What is the maximum output current of the LM2655?

The LM2655 can deliver up to 2.5 A of output current.

What is the switching frequency of the LM2655?

It uses a fixed 300 kHz internal oscillator for switching.

What is the shutdown current of the LM2655?

The device guarantees a shutdown current of less than 12 µA.

What package does the LM2655 use?

The LM2655 is supplied in a 16‑pin TSSOP package.

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