ST7809 데이터 시트보기 (PDF) - Semtech Electronics LTD.
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ST7809 Datasheet PDF : 3 Pages
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ST 7809
3-terminal 1 A positive voltage regulator
Features
• Output Current up to 1 A
• Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area Protection
Absolute Maximum Ratings (Ta = 25 OC)
Parameter
Input Voltage
Thermal Resistance Junction-Cases
Thermal Resistance Junction-Air
Operating Temperature Range
Storage Temperature Range
TO-220 Plastic Package
Symbol
VI
RθJC
RθJA
TOPR
TS
Value
35
5
65
0 to + 125
- 65 to + 150
Unit
V
OC/W
OC/W
OC
OC
Electrical Characteristics
(0 OC < TJ < 125 OC, IO = 500 mA, VI = 15 V, CI = 0.33 µF, CO = 0.1 µF, unless otherwise specified)
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
Output Voltage
Line Regulation 1)
VO
Regline
TJ = 25 OC
5 mA ≤ IO ≤ 1 A, PO ≤ 15 W
VI = 11.5 V to 24 V
TJ = 25 OC
VI = 11.5 V to 25 V
VI = 12 V to 17 V
8.65 9 9.35
V
8.6 9 9.4
-
- 180
mV
-
-
90
Load Regulation 1)
Regload TJ = 25 OC IO = 5 mA to 1.5 A
-
- 180
mV
IO = 250 mA to 750 mA
-
-
90
Quiescent Current
IQ
TJ = 25 OC
-
-
8
mA
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
ΔIQ
ΔVO/ΔT
VN
RR
VDrop
RO
IO = 5 mA to 1 A
VI = 12 V to 26 V
IO = 5 mA
f = 10 Hz to 100 KHz, TA = 25 OC
f = 120 Hz, VI = 13 V to 23 V
IO = 1 A, TJ = 25 OC
f = 1 KHz
-
- 0.5
mA
-
- 1.3
-
-1
- mV/OC
- 58 -
µV
56 -
-
dB
-
2
-
V
-
15
-
mΩ
Short Circuit Current
ISC VI = 35 V, TA = 25 OC
- 250 -
mA
Peak Current
IPK
TJ = 25 OC
- 2.2 -
A
1) Load and line regulation are specified at constant junction temperature, Changes in Vo due to heating effects must be taken
into account separately, Pulse testing with low duty is used.
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
®
Dated : 13/01/2007
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