LD2985 データシートの表示（PDF） - STMicroelectronics

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LD2985

Very low drop and low noise voltage regulator with inhibit function

STMicroelectronics 

LD2985

Very low drop and low noise voltage regulator with inhibit function

SOT23-5L

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

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, CBYP = 10 nF, connected

between bypass pin and GND reduces the noise

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

Order codes

Output voltages

LD2985BM18R

1.8 V

LD2985BM25R

LD2985BM28R

2.5 V

2.8 V

LD2985BM30R

3.0 V

LD2985BM31R

3.1 V

LD2985BM33R

3.3 V

LD2985BM50R

5.0 V

November 2013

This is information on a product in full production.

DocID8189 Rev 13

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