STMicroelectronics LDS3985xx Ultra Low Drop Voltage Regulator Datasheet

LDS3985xx is a low dropout, low noise, BiCMOS 300 mA voltage regulator for use with very low ESR output capacitors.


STMicroelectronics LDS3985xx Ultra Low Drop Voltage Regulator Datasheet - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
20
File format
PDF
File size
456 KB
Published
10 August, 2012
Updated
01 October, 2023
MD5 checksum
B1B48DFFBEFBCFD885736554761A6BB4

About this manual

The LDS3985xx is an ultra low drop, low noise BiCMOS voltage regulator designed for use with very low ESR output capacitors. It provides up to 300 mA of output current from an input voltage range of 2.5 V to 6 V. The device features an ultra low dropout voltage of 150 mV typical at 300 mA load and a very low quiescent current of 85 µA typical at no load.

What's inside

  • Features
  • Description
  • Pin configuration
  • Typical application
  • Maximum ratings
  • Electrical characteristics
  • Typical performance characteristics
  • Package mechanical data
  • Order codes
  • Revision history

Specifications

Output current300 mA
Input voltage range2.5 V to 6 V
Output voltage range1.25 V to 5.0 V
Dropout voltage150 mV typ.
Quiescent current85 µA typ.
Operating temperature-40 °C to 125 °C
Output noise voltage30 µVrms
Supply voltage rejection55 dB

Frequently asked questions

What is the typical dropout voltage at 300 mA load?

The typical dropout voltage is 150 mV at a 300 mA load.

What is the typical quiescent current at no load?

The typical quiescent current is 85 µA at no load.

Is the device stable with ceramic capacitors?

Yes, it is stable with low ESR ceramic capacitors.

What is the maximum output current?

The guaranteed output current is up to 300 mA.

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