LX8942 Microsemi Corporation, LX8942 Datasheet

LX8942

Manufacturer Part Number

LX8942

Description

Low Dropout Dual Regulator

Manufacturer

Microsemi Corporation

Datasheet

1.LX8942.pdf (8 pages)

Current page: 1 of 8
Download datasheet (234Kb)

Rev. 1.2, 2006-01-20

8.2V/5V positive voltage regulator. One

output is a high current (up to 1000mA)

regulator that can be turned on or off by a

high

compatible switch. The second or standby

output remains on regardless. The on/off

switch not only shuts off the high current

output but actually puts the IC in a

micropower

quiescent

characteristic coupled with an extremely

low dropout, (0.55V for output current of

10mA) makes the LX8942 well suited for

power

memory. The LX8942 includes other

features which were originally designed

for automotive applications. These include

protection

installations, double battery jumps and

load dump (transients).

IMPORTANT: For the most current data, consult MICROSEMI’s website:

The Microsemi LX8942 is a dual

impedance

systems

current.

from

mode,

that

low

ON/OFF Switch (for

output voltage only)

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

reverse

achieving

require standby

This

Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8942IDT-TR)

current

-40 to 85

0.1µF

D E S C R I P T I O N

C1*

(°C)

battery

unique

TTL

low

LX8942

voltage shutdown to protect both the internal

circuitry and the load during line transients,

such as load dump (60V). In addition, the

high current regulator design also has built-

in protection for short circuit and thermal

overload. During these fault conditions of

the primary output, the standby regulator

will continue to power its load.

of a family of dual regulators with a standby

output voltage of 5V. Other high-current

outputs programmed for 5V and 12V

regulation are available in the SG29055,

SG29125 devices.

function over the full automotive ambient

temperature range of -40°C to 85°C.

Input Voltage

Over Voltage

The high current regulator has over

The LX8942 is the 8.2 volt, ±5% version

Shutdown

Thermal

P R O D U C T H I G H L I G H T

P A C K A G E O R D E R I N F O

(VIN)

Integrated Products Division

5-Pin

Plastic TO-252

5V Standby

Regulator

Reference

Regulator

Microsemi

http://www.microsemi.com

Ground

1.23V

Bias

RoHS Compliant / Pb-free

They are designed to

* Required close to regulator package.

** Required for stability. May be increased without bound.

Capacitor must be rated to operate at the minimum

temperature expected for the regulator system.

LX8942IDT

Low Dropout Dual Regulator

100µF

C2 **

47µF

C3**

RODUCTION

Standby Output (VSB)

(5V, 60mA)

Output Voltage (VOUT1)

(8.2V, 1000mA)

2% Internally Trimmed Output

Two regulated outputs

Output current in excess of

1000mA

Low quiescent current standby

regulator

Drop-out Voltage, Input-output

differential <0.6V at 0.5A

Reverse battery protection

60V load dump protection

-50V reverse transient protection

Short circuit protection

Internal thermal overload

protection

ON/OFF switch for high current

output

Surface Mount TO-252

Automotive electronics for

controls, entertainment and

safety functions

Continuous operation systems

ATA

K E Y F E A T U R E S

A P P L I C A T I O N S

HEET

LX8942

Page 1

Related parts for LX8942

LX8942 Summary of contents

Page 1

... ON/OFF Switch (for output voltage only) T (° Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8942IDT-TR) Copyright © 2005 Rev. 1.2, 2006-01-20 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® Low Dropout Dual Regulator ...

Page 2

... STANDBY OUTPUT (VSB) ON/OFF SWITCH IN GROUND OUTPUT VOLTAGE (V INPUT VOLTAGE ( ACKAGE (Top View) RoHS / Pb-free 100% matte Tin Lead Finish Note: The heat sink tab is the Ground Connection for this package. regulator. OUT1 LX8942 Symbol Min Typ Max 0 ...

Page 3

... SB V 4.75V < V < Microsemi Integrated Products Division LX8942 D S RODUCTION ATA HEET ≤ ≤ T 70°C except where A and 10mA for V and are for DC OUT1 SB LX8942 Units Min Typ Max 7.6 8.0 8 200 2 40 100 90 100 µ ...

Page 4

... Low Dropout Dual Regulator 60V 33V 26V 4V 8.2V 3.5V 3.7V LINE LOAD LOW NOISE, DUMP V ETC. IN Microsemi Integrated Products Division LX8942 RODUCTION ATA HEET Double Battery 14V 8.2V 8.2V 8.2V V OUT THERMAL TURN SHORT SHUTDOWN OFF ...

Page 5

... Vcesat, thus the lower input to output voltage differential or dropout voltage. In addition to a low dropout voltage, an important advantage of the LX8942 series is low quiescent current in the standby mode. When the high current or primary regulator is shut off, the regulator enters a micropower mode ...

Page 6

... This is directly compatible with all 5 volt logic families. For use with open collector logic outputs, a 100Kresistor from this pin supply, such as Pin 5, is required. Microsemi Integrated Products Division LX8942 D S ATA HEET Page 6 ...

Page 7

... L L 1.08 L3 0.89 C Ø 0.85 Note: 1. Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. Lead dimension shall not include solder coverage. Microsemi Integrated Products Division LX8942 D S ATA HEET I ILLIMETERS NCHES MAX MIN MAX 2.39 0.086 0.094 ...

Page 8

... Copyright © 2005 Rev. 1.2, 2006-01-20 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® Low Dropout Dual Regulator P RODUCTION Microsemi Integrated Products Division LX8942 D S ATA HEET Page 8 ...

Related keywords

LX8942 datasheet
LX8942 data sheet
LX8942 pdf datasheet
LX8942 component
LX8942 part
LX8942 distributor
LX8942 RoHS
LX8942 datasheet download