Linear Technology LTC3638 Step-Down Regulator Datasheet

The LTC®3638 is a high efficiency step-down DC/DC regulator with internal power switch that draws only 12μA typical DC supply current while maintaining a regulated output voltage at no load.


Linear Technology LTC3638 Step-Down Regulator Datasheet - cover page
Brand
Linear Technology
Category
Step-Down Regulator
Document type
Datasheet
Language
English
Pages
25
File format
PDF
File size
378 KB
Published
09 July, 2014
Updated
30 September, 2023
MD5 checksum
685F7DA93B61CE45E5A9B4E1DEBA3DD2

About this manual

The LTC3638 is a high efficiency step-down DC/DC regulator featuring an internal low resistance power MOSFET. It draws only 12µA typical quiescent current while maintaining a regulated output voltage at no load, making it suitable for battery-powered applications.

Key features include a wide operating input voltage range of 4V to 140V, adjustable output currents from 20mA to 250mA, and low dropout operation with 100% duty cycle. The device supports programmable fixed outputs (1.8V, 3.3V, 5V) or an adjustable range from 0.8V to Vin.

What's inside

  • Features
  • Applications
  • Description
  • Absolute Maximum Ratings
  • Order Information
  • Electrical Characteristics
  • Typical Performance Characteristics

Specifications

Input Voltage Operating Range4V to 140V
Output Voltage Operating Range0.8V to Vin
Maximum Output Current250mA
Quiescent Current (No Load)12µA typical

Frequently asked questions

What is the typical quiescent current of the LTC3638?

The device draws only 12µA typical DC supply current while maintaining a regulated output voltage at no load.

What is the operating input voltage range?

The regulator supports an input voltage range from 4V to 140V.

Does the LTC3638 require external compensation?

No, the device features no compensation required for operation.

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