UNISONIC TECHNOLOGIES CO., LTD

LD1985

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

1 of 10

Copyright © 2011 Unisonic Technologies Co., Ltd

QW-R102-021,G

VERY LOW DROP AND LOW

NOISE VOLTAGE REGULATOR

LOW ESR CAP. COMPATIBLE,

WITH INHIBIT FUNCTION

DESCRIPTION

The UTC LD1985 is a 150mA 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 1μA

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.

and GND reduce the noise to 30μVrms.

Typical application is in cellular phone, palmtop laptop computer,

personal digital assistant (PDA), personal stereo, camcorder and

camera.

FEATURES

* Very Low Dropout Voltage (280mV at 150mA and 7mV at 1mA Load)

* Very Low Quiescent Current (2mA Typ. at 150mA Load and 80μA at

no Load)

* Output Current up to 150mA

* Logic Controlled Electronic Shutdown

* Output Voltage of 1.5, 1.8, 2.5, 2.8, 2.85, 3, 3.1, 3.2, 3.3, 3.5, 3.6, 3.8,

4, 4.7, 5V

* Internal Current and Thermal Limit

* Low Output Noise Voltage 30μVrms

ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

LD1985L-xx-AF5-R

LD1985G-xx-AF5-R

SOT-25

Tape Reel

Note: xx: Output Voltage, refer to Marking Information.

(1) R: Tape Reel

(2) AF5: SOT-25

(3) xx: Refer to Marking Information

(4) G: Halogen Free, L: Lead Free

LD1985L-xx-AF5-R

(1)Packing Type

(2)Package Type

(3)Output Voltage Code

(4)Lead Free