ST78L09U Datasheet, PDF (1/2 Pages) SEMTECH ELECTRONICS LTD. – 3-Terminal Positive Voltage Regulator

ST 78L09U
3-Terminal Positive Voltage Regulator
Absolute Maximum Ratings (T_a = 25 ^OC)
Parameter
Symbol
Value
Unit
Input Voltage
Power Dissipation
V_I
35
V
P_tot
800 ¹⁾
mW
Operating Temperature
T_opr
- 20 to + 120
O_C
Storage Temperature Range
T_s
- 55 to + 150
O_C
1) _{15 mm X 25 mm X 0.7 mm alumina ceramic board, Ta ≤ 25 OC}
Electrical Characteristics (T_a = 25 ^OC)
(Unless otherwise specified, 0 ^OC ≤ T_J ≤ 125 ^OC, V_I = 15 V, I_O = 40 mA, C_I = 0.33 µF, C_O = 0.1 µF)
Parameter
Symbol
Test Condition
Min. Typ. Max. Unit
T_j = 25 ^OC
8.64 9 9.36 V
Output Voltage
V_O 11.4 V ≤ V_I ≤ 24 V, 1 mA ≤ I_O ≤ 40 mA _8.55
-
9.45 V
V_I = 15 V, 1 mA ≤ I_O ≤ 70 mA
8.55 - 9.45 V
Line Regulation
Regline ^{11.4 V ≤ VI ≤ 24 V, Tj = 25 OC}
12 V ≤ V_I ≤ 24 V, T_j = 25 ^OC
-
-
200
mV
-
-
160
Load Regulation
Quiescent Current
Regload ^{1 mA ≤ IO ≤ 100 mA, Tj = 25 OC}
1 mA ≤ I_O ≤ 40 mA, T_j = 25 ^OC
I_Q
T_j = 25 ^OC
-
-
90
mV
-
-
45
-
-
6 mA
Quiescent Current Change ΔI_Q
12 V ≤ V_I ≤ 24 V, I_O = 40 mA
V_I = 15 V, 1 mA ≤ I_O ≤ 40 mA
Output Noise Voltage
V_{N 10 Hz ≤ f ≤ 100 KHz, Tj = 25} ^O_C
-
-
1.5
mA
-
-
0.1
-
70
-
µV
Ripple Rejection
RR f = 120 Hz, 12 V ≤ V_I ≤ 24 V, T_j = 25 ^OC 38
-
-
dB
Dropout Voltage
V_{Drop Tj = 25 °C}
-
1.7
-
V
V_I
C₁
78L08U
0.33 µF
V_O
C₂
0.1 µF
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
®
Dated : 05/09/2006