LM7809 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
LM7809
GENERAL DESCRIPTION
The LM7809 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
Output Voltage
Peak Current
V_I
35
V
V_O
9.0
V
I_PK
2.2
A
Operating Temperature
Range
T_OPR
0~125 ^oC
Storage Temperature Range T_STG -65~150 ^oC
TO-220
ELECTRICAL CHARACTERISTICS ( Ta = 25 ^OC)
(Refer to test circuit, Io = 500mA, Vi = 15V, Ci= 0.33uF, Co=0.1uF unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Output Voltage
Line Regulation (Note1)
Load Regulation (Note1)
Quiescent Current
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
V_O V_I = 11.5V to 25V
V_I = 11.5V to 25V
Regline
V_I = 12V to 17V
Regload ^{IO = 5.0mA to1.5A}
I_O =250mA to 750mA
I_Q
T_J =+25 ^oC
RR f = 120Hz, V_O = 11V to 21V
V_Drop I_O = 1A, T_J =+25 ^oC
r_O f = 1KHz
I_SC V_I = 35V, T_A =+25 ^oC
I_PK
T_J =+25 ^oC
8.73 9.0 9.27 V
6.0 180
mV
2.0 90
12 180
mV
4
90
5
8 ^mA
56
71
dB
2
V
0.017
Ω
250
mA
2.2
A