LM7808J 查看數據表（PDF） - Tiger Electronic
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LM7808J Datasheet PDF : 1 Pages
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TIGER ELECTRONIC CO.,LTD
Product specification
3-Terminal 1A Positive Voltage Regulator
LM7808J
GENERAL DESCRIPTION
The LM7808 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
VI
35
V
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: IN
2: GND
3: OUT
ELECTRICAL CHARACTERISTICS ( Ta = 25 OC)
(Refer to test circuit, Io = 500mA, Vi = 14V, Ci= 0.33uF, Co=0.1uF unless otherwise specified)
Parameter
Output Voltage
Line Regulation (Note1)
Load Regulation (Note1)
Quiescent Current
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Symbol
Test Conditions
VO VI = 10.5V to 25V
VI = 10.5V to 25V
Regline
VI = 11.5V to 17V
Regload IO = 5.0mA to1.5A
IO =250mA to 750mA
IQ
TJ =+25 oC
RR f = 120Hz, VO = 11V to 21V
VDrop IO = 1A, TJ =+25 oC
rO f = 1KHz
ISC VI = 35V, TA =+25 oC
IPK
TJ =+25 oC
Min Typ Max Unit
7.76 8.0 8.24 V
—
5.0 160
mV
—
2.0
80
—
10 160
mV
—
5
80
—
5
8 mA
56
73
— dB
—
2
—V
— 0.017 — Ω
— 230 — mA
—
2.2
—A
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