LM7908J 查看數據表（PDF） - Tiger Electronic
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LM7908J Datasheet PDF : 1 Pages
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TIGER ELECTRONIC CO.,LTD
3-Terminal 1A Negative Voltage Regulator
Product specification
LM7908J
GENERAL DESCRIPTION
The LM7908J series of three-terminal negative regulators are available in TO-252 package and with
several fixed output voltages, making them useful in a wide range of applications. Each type employs
internal current limiting, thermal shutdown and safe operating area protection, making it essentially
indestructible.
ABSOLUTE MAXIMUM RATINGS ( Ta = 25 OC)
Parameter
Symbol Typ Unit
Input Voltage
VI
-35
V
Output Voltage
VO
-8.0
V
Peak Current
IPK
-2.2
A
Operating Temperature
Range
TOPR
0~125 oC
Storage Temperature Rang TSTG -65~150 oC
e
1: GND
2: IN
3: OUT
TO-252
ELECTRICAL CHARACTERISTICS ( Ta = 25 OC)
(Refer to test circuit, Io = 500mA, Vi = -14V, Ci= 2.2uF, Co=1.0uF unless otherwise specified)
Parameter
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current
Change
Output voltage drift
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Symbol
Test Conditions
VO
△Vo
△Vo
IQ
△IQ
Tj = 25℃ VI = -11V ~ -23V
IO = 5.0ｍA~1.0A, PD<10W
Tj = 25℃, Vi= -11V ~ -25V
Tj = 25℃，VI = -12V ~ -17V
Tj = 25℃, IO = 5.0mA ~1.0A
Tj = 25℃ IO = 250mA ~ 750mA
TJ =+25 oC
Io = 5.0ｍA ~ 1.0A
Tj = 25℃, Vi= -11V ~ -25V
△Vo/△T Io = 5.0ｍA
RR
VDrop
RO
ISC
IPK
f = 120Hz, VO = -12V to -21V
IO = 1A, TJ =+25 oC
f = 1KHz
VI = -35V, TA =+25 oC
TJ =+25 oC
Min Typ Max Unit
-7.76 -8.0 -8.24 V
—
— -160
mV
—
—
-80
—
— -160
mV
—
—
-80
—
—
-8.0 mA
-0.5 mA
-1.3 mA
-0.8
mV/℃
56
73
— dB
—
-2
—
V
— 0.017 —
—
-230
— mA
—
—
-2.2
A
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