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參數(shù)資料
| 型號： | LX8942 |
| 廠商： | Microsemi Corporation |
| 英文描述： | Low Dropout Dual Regulator |
| 中文描述： | 低壓差穩(wěn)壓雙 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 240K |
| 代理商： | LX8942 |
LX8942
P
RODUCTION
D
ATA
S
HEET
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
W
M
.
C
Low Dropout Dual Regulator
TM
A B S O L U T E M A X I M U M R A T I N G S
Input Voltage (V
IN
) Operating.......................................................................................26V
Input Voltage (V
IN
) Over Voltage Transient.................................................... -15V to 60V
ON/OFF Switch................................................................................................-0.3V to V
IN
Operating Ambient Temperature Range..................................................... -40°C to +85°C
Storage Temperature Range (T
STG
)..............................................................-65°C to 150°C
Maximum Operating Junction Temperature (T
J
) .......................................................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
.
T H E R M A L D A T A
DT
Plastic TO-252 5-Pin
THERMAL RESISTANCE
-
JUNCTION TO
C
ASE
,
θ
JC
THERMAL RESISTANCE
-
JUNCTION TO
A
MBIENT
,
θ
JA
9
°
C/W
80
°
C/W
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x
θ
JA
).
The
θ
JA
numbers are guidelines for the thermal performance of the device/pc-board system. All of the
above assume no ambient airflow.
P A C K A G E P I N O U T
INPUT VOLTAGE (V
IN
)
DT
P
ACKAGE
(Top View)
OUTPUT VOLTAGE (V
OUT1
)
GROUND
ON/OFF SWITCH
STANDBY OUTPUT (VSB)
GROUND
RoHS / Pb-free 100% matte Tin Lead Finish
Note: The heat sink tab is the Ground
Connection for this package.
F U N C T I O N A L P I N D E S C R I P T I O N
Name
Description
V
IN
V
OUT1
GND
ON/OFF
V
SB
Input Voltage Supply.
+8.2V Output Voltage at up to 1000mA.
Regulator Ground.
TTL Logic level input control for turning ON and OFF the high current V
OUT1
regulator.
+5V Standby Output Voltage at up to 60mA.
R E C O M M E N D E D O P E R A T I N G C O N D I T I O N S
Range over which the device is functional.
LX8942
Typ
Parameter
Symbol
Min
9
2
5
0.1
Max
26
0.8
1000
60
-15
Units
Input Voltage
ON/OFF Threshold Voltage Low Level, (V
OUT1
is OFF)
ON/OFF Threshold Voltage High level, (V
OUT1
is ON)
Load Current V
OUT1
(with adequate heatsinking)
Maximum Line Transient (Load Dump) V
SB
< 6V
Input Capacitor (V
IN
to GND)
Reverse Polarity D.C. Input Voltage (V
IN
) (V
OUT1
> -0.6V, 16
Load)
Reverse Polarity Transient Input Voltage (V
IN
) (1% Duty Cycle, T <
100ms, V
OUT1
> -9V, 16
Load)
Output Capacitor (V
OUT1
to GND & V
SB
to GND)
Output Capacitor ESR Value
V
IN
V
IL
V
IH
V
V
V
mA
V
μF
V
-50
V
10
0.5
μF
5.0
P
A
C
K
A
G
E
D
A
T
A
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