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LD1985-3.2V

Description
LINEAR INTEGRATED CIRCUIT
CategoryPower/power management    The power supply circuit   
File Size217KB,11 Pages
ManufacturerUNISONIC TECHNOLOGIES CO.,LTD
Websitehttp://www.unisonic.com.tw/
Download Datasheet Parametric View All

LD1985-3.2V Overview

LINEAR INTEGRATED CIRCUIT

LD1985-3.2V Parametric

Parameter NameAttribute value
package instructionTSOP, TSOP5/6,.11,37
Reach Compliance Codecompli
ECCN codeEAR99
AdjustabilityFIXED
Nominal dropback voltage 10.28 V
Maximum absolute input voltage7 V
JESD-30 codeR-PDSO-G5
Maximum grid adjustment rate0.0121%
Output times1
Number of terminals5
Working temperatureTJ-Max125 °C
Operating temperatureTJ-Mi-40 °C
Maximum output current 10.15 A
Nominal output voltage 13.2 V
Package body materialPLASTIC/EPOXY
encapsulated codeTSOP
Encapsulate equivalent codeTSOP5/6,.11,37
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE
Certification statusNot Qualified
Regulator typeFIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mountYES
technologyBIPOLAR
Terminal formGULL WING
Terminal pitch0.95 mm
Terminal locationDUAL
Maximum voltage tolerance4%
Base Number Matches1
UTC LD1985
LINEAR INTEGRATED CIRCUIT
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.
An external capacitor, C
BYP
=10nF, connected between
bypass pin and GND reduce the noise to 30μVrms.
Typical application are in cellular phone, palmtop
laptop computer, personal digital assistant (PDA),
personal stereo, camcorder and camera.
2
3
1
5
4
SOT-25
1:V
IN
4:Bypass
2:GND
5:V
OUT
3:INHIBIT
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
*AVAILABLE IN ± 1% TOLLERANCE (at 25℃, A
VERSION)
*LOW OUTPUT NOISE VOLTAGE 30μVrms
PIN DESCRIPTION
PIN
NO.
1
2
PIN
NAME
IN
GND
FUNCTION
3
4
5
Input Port
Ground Pin
Control switch ON/OFF.
Inhibit is not internally
pulled-up; it cannot be left
INHIBIT floating. Disable the device
when connected to GND or
to a positive voltage less
than 0.18V
Bypass Pin: Capacitor to
be connected to GND in
Bypass order to improve the
thermal noise
performances.
OUT Output Port
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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