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LX8942 Datasheet(PDF) 2 Page - Microsemi Corporation

Part No. LX8942
Description  Low Dropout Dual Regulator
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Maker  MICROSEMI [Microsemi Corporation]
Homepage  http://www.microsemi.com
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LX8942 Datasheet(HTML) 2 Page - Microsemi Corporation

   
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LX8942
PRODUCTION DATA SHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright
© 2005
Rev. 1.2, 2006-01-20
Low Dropout Dual Regulator
TM
®
ABSOLUTE MAXIMUM RATINGS
Input Voltage (VIN) Operating .......................................................................................26V
Input Voltage (VIN) Over Voltage Transient.................................................... -15V to 60V
ON/OFF Switch ................................................................................................-0.3V to VIN
Operating Ambient Temperature Range ..................................................... -40°C to +85°C
Storage Temperature Range (TSTG)..............................................................-65°C to 150°C
Maximum Operating Junction Temperature (TJ) ....................................................... 150°C
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal
.
TH ERMAL DATA
DT Plastic TO-252 5-Pin
THERMAL RESISTANCE
-JUNCTION TO CASE,
θ
JC
9
°C/W
THERMAL RESISTANCE
-JUNCTION TO AMBIENT,
θ
JA
80
°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The
θJA numbers are guidelines for the thermal performance of the device/pc-board system. All of the
above assume no ambient airflow.
PACKAGE PIN OUT
INPUT VOLTAGE (V
IN)
OUTPUT VOLTAGE (V
OUT1)
GROUND
ON/OFF SWITCH
STANDBY OUTPUT (VSB)
GROUND
DT PACKAGE
(Top View)
RoHS / Pb-free 100% matte Tin Lead Finish
Note: The heat sink tab is the Ground
Connection for this package.
FUNCTIONAL PIN DESCRIPTION
Name
Description
VIN
Input Voltage Supply.
VOUT1
+8.2V Output Voltage at up to 1000mA.
GND
Regulator Ground.
ON/OFF
TTL Logic level input control for turning ON and OFF the high current VOUT1 regulator.
VSB
+5V Standby Output Voltage at up to 60mA.
RECOMM END E D O P ERATING CONDITIONS
Range over which the device is functional.
LX8942
Parameter
Symbol
Min
Typ
Max
Units
Input Voltage
VIN
9
26
V
ON/OFF Threshold Voltage Low Level, (VOUT1 is OFF)
VIL
0.8
V
ON/OFF Threshold Voltage High level, (VOUT1 is ON)
VIH
2
V
Load Current VOUT1 (with adequate heatsinking)
5
1000
mA
Maximum Line Transient (Load Dump) VSB < 6V
60
V
Input Capacitor (VIN to GND)
0.1
µF
Reverse Polarity D.C. Input Voltage (VIN) (VOUT1 > -0.6V, 16Ω Load)
-15
V
Reverse Polarity Transient Input Voltage (VIN) (1% Duty Cycle, T <
100ms, VOUT1 > -9V, 16Ω Load)
-50
V
Output Capacitor (VOUT1 to GND & VSB to GND)
10
µF
Output Capacitor ESR Value
0.5
5.0


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