ST7809 Datasheet, PDF (1/3 Pages) SEMTECH ELECTRONICS LTD. – 3-terminal 1 A positive voltage regulator

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 (T_a = 25 ^OC)
Parameter
Input Voltage
Thermal Resistance Junction-Cases
Thermal Resistance Junction-Air
Operating Temperature Range
Storage Temperature Range
TO-220 Plastic Package
Symbol
V_I
R_θJC
R_θJA
T_OPR
T_S
Value
35
5
65
0 to + 125
- 65 to + 150
Unit
V
O_C/W
O_C/W
O_C
O_C
Electrical Characteristics
(0 ^OC < T_J < 125 ^OC, I_O = 500 mA, V_I = 15 V, C_I = 0.33 µF, C_O = 0.1 µF, unless otherwise specified)
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
Output Voltage
Line Regulation ¹⁾
V_O
Regline
T_J = 25 ^OC
5 mA ≤ I_O ≤ 1 A, P_O ≤ 15 W
V_I = 11.5 V to 24 V
T_J = 25 ^OC
V_I = 11.5 V to 25 V
V_I = 12 V to 17 V
8.65 9 9.35
V
8.6 9 9.4
-
- 180
mV
-
-
90
Load Regulation ¹⁾
Regload T_J = 25 ^OC ^{IO = 5 mA to 1.5 A}
-
- 180
mV
I_O = 250 mA to 750 mA
-
-
90
Quiescent Current
I_Q
T_J = 25 ^OC
-
-
8
mA
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
ΔI_Q
ΔV_O/ΔT
V_N
RR
V_Drop
R_O
I_O = 5 mA to 1 A
V_I = 12 V to 26 V
I_O = 5 mA
f = 10 Hz to 100 KHz, T_A = 25 ^OC
f = 120 Hz, V_I = 13 V to 23 V
I_O = 1 A, T_J = 25 ^OC
f = 1 KHz
-
- 0.5
mA
-
- 1.3
-
-1
- mV/^OC
- 58 -
µV
56 -
-
dB
-
2
-
V
-
15
-
mΩ
Short Circuit Current
I_SC V_I = 35 V, T_A = 25 ^OC
- 250 -
mA
Peak Current
I_PK
T_J = 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