LM7908J Datasheet, PDF (1/1 Pages) Tiger Electronic Co.,Ltd – 3-Terminal 1A Positive Voltage Regulator

TIGER ELECTRONIC CO.,LTD
Product specification
3-Terminal 1A Positive Voltage Regulator
LM7908J
GENERAL DESCRIPTION
The LM7908 series of three terminal positive regulators are available in the TO-220 package and with
several fixed output voltages, making them useful in a wide range of applications. Each type employs
internal current limiting, thermal shut down and safe operating area protection, making it essentially
indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although
designed primarily as fixed voltage regulators, these devices can be used with external components to
obtain adjustable voltages and currents.
ABSOLUTE MAXIMUM RATINGS ( Ta = 25 ^OC)
Parameter
Symbol Typ Unit
Input Voltage
V_I
Output Voltage
V_O
Peak Current
I_PK
Operating Temperature
Range
T_OPR
Storage Temperature Range T_STG
-35
V
-8.0
V
-2.2
A
0~125 ^oC
-65~150 ^oC
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 (Note1)
Load Regulation (Note1)
Quiescent Current
Quiescent Current Change
Ripple Rejection
Dropout Voltage
Short Circuit Current
Peak Current
Symbol
Test Conditions
Min
V_O V_I = -10.5V to -21V
V_I = -10.5V to -25V
Regline
V_I = -11V to -17V
Regload ^{IO = -5.0mA to-1.5A}
I_O =-250mA to -750mA
I_Q
T_J =+25 ^oC
I_O = -5mA to -1A
ΔI_Q
V_I = -11.5V to -25V
RR f = 120Hz, V_O = -11V to -21V
V_Drop I_O = -1A, T_J =+25 ^oC
I_SC V_I = -35V, T_A =+25 ^oC
I_PK
T_J =+25 ^oC
-7.76
—
—
—
—
—
—
—
54
—
—
—
Typ
-8.0
-10
-5.0
-12
-4
-3
—
—
60
-2
-300
-2.2
Max Unit
-8.24 V
-160
mV
-80
-160
mV
-80
6 ^mA
-0.5
mA
-1.0
— ^dB
—^V
— mA
—A