LM7908J_17 Datasheet, PDF (1/1 Pages) Tiger Electronic Co.,Ltd – 3-Terminal 1A Negative Voltage Regulator

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
V_I
-35
V
Output Voltage
V_O
-8.0
V
Peak Current
I_PK
-2.2
A
Operating Temperature
Range
T_OPR
0~125 ^oC
Storage Temperature Rang _{TSTG -65~150} ^o_C
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
V_O
△V_o
△V_o
I_Q
△^IQ
Tj = 25℃ V_I = -11V ~ -23V
I_O = 5.0ｍA~1.0A, P_D<10W
Tj = 25℃, Vi= -11V ~ -25V
Tj = 25℃，V_I = -12V ~ -17V
Tj = 25℃, I_O = 5.0mA ~1.0A
Tj = 25℃ I_O = 250mA ~ 750mA
T_J =+25 ^oC
Io = 5.0_ｍA ~ 1.0A
Tj = 25_℃, Vi= -11V ~ -25V
△^Vo/△^{T Io = 5.0}ｍ^A
RR
V_Drop
R_O
I_SC
I_PK
f = 120Hz, V_O = -12V to -21V
I_O = 1A, T_J =+25 ^oC
f = 1KHz
V_I = -35V, T_A =+25 ^oC
T_J =+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