LD2985 datasheet, PDF - EEWORLD Datasheet

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LD2985: Description5 V FIXED POSITIVE LDO REGULATOR, 0.575 V DROPOUT, PDSO5; Categorysemiconductor Power management; File Size818KB，18 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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LD2985 Overview

5 V FIXED POSITIVE LDO REGULATOR, 0.575 V DROPOUT, PDSO5

LD2985 Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	5
Maximum output current	0.1500 A
Maximum output voltage	5.2 V
Minimum output voltage	4.8 V
Maximum input voltage	16 V
Minimum input voltage	2.5 V
Processing package description	ROHS COMPLIANT, SOT-23, 5 PIN
Lead-free	Yes
EU RoHS regulations	Yes
state	ACTIVE
packaging shape	RECTANGULAR
Package Size	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
surface mount	Yes
Terminal form	GULL WING
Terminal spacing	0.9500 mm
terminal coating	NICKEL PALLADIUM GOLD
Terminal location	DUAL
Packaging Materials	PLASTIC/EPOXY
Maximum voltage difference	0.5750 V
Adjustment type	FIXED POSITIVE LDO REGULATOR
Rated output voltage	5 V

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LD2985

Very low drop and low noise voltage regulator with inhibit function

Datasheet

production data

to 30 µVrms. Typical application are in cellular

phone, palmtop laptop computer, personal digital

assistant (PDA), personal stereo, camcorder and

camera.

Table 1. Device summary

SOT23-5L

Order codes

LD2985BM18R

LD2985BM25R

Output voltages

1.8 V

2.5 V

2.8 V

3.0 V

3.1 V

3.3 V

5.0 V

Features

•

Very low dropout voltage (280 mV at 150 mA

and 7 mV at 1 mA load)

•

Very low quiescent current (2 mA typ. at 150

mA load and 80 µA at no load)

•

Output current up to 150 mA

•

Logic controlled electronic shutdown

•

Output voltage of 1.8, 2.5, 2.8, 3, 3.1, 3.3, 5 V

•

Internal current and thermal limit

•

Low output noise voltage 30 mVrms

•

Small package SOT23-5L

•

Temperature range: - 40°C to 125 °C

LD2985BM28R

LD2985BM30R

LD2985BM31R

LD2985BM33R

LD2985BM50R

Description

The LD2985 is a 150 mA fixed output voltage

regulator. The ultra low drop voltage and the low

quiescent current make them particularly suitable

for low noise, low power applications, and in

battery powered systems. In sleep mode

quiescent current is less than 1 µA when INHIBIT

pin is pulled low. Shutdown logic control function

is available on pin 3 (TTL compatible). This

means that when the device is used as local

regulator, it is possible to put a part of the board in

standby, decreasing the total power consumption.

An external capacitor, C

BYP

= 10 nF, connected

between bypass pin and GND reduces the noise

November 2013

This is information on a product in full production.

DocID8189 Rev 13

1/18

www.st.com

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