ST78L08U Datasheet, PDF (1/2 Pages) SEMTECH ELECTRONICS LTD. – 3-Terminal Positive Voltage Regulator

ST 78L08U
3-Terminal Positive Voltage Regulator
Absolute Maximum Ratings (T_a = 25 ^OC)
Parameter
Symbol
Value
Unit
Input Voltage
Power Dissipation
V_I
30
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 = 14 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
7.7
Output Voltage
V_O 10.5 V ≤ V_I ≤ 23 V, 1 mA ≤ I_O ≤ 40 mA
7.6
V_I = 14 V, 1 mA ≤ I_O ≤ 70 mA
7.6
Line Regulation
Regline ^{10.5 V ≤ VI ≤ 23 V, Tj = 25 OC}
-
11 V ≤ V_I ≤ 23 V, T_j = 25 ^OC
-
Load Regulation
Regload ^{1 mA ≤ IO ≤ 100 mA, Tj = 25 OC}
-
1 mA ≤ I_O ≤ 40 mA, T_j = 25 ^OC
-
Quiescent Current
I_Q
T_j = 25 ^OC
-
Quiescent Current Change ΔI_Q ^{12 V ≤ VI ≤ 23 V, IO = 40 mA}
-
V_I = 14 V, 1 mA ≤ I_O ≤ 40 mA
-
Output Noise Voltage
V_{N 10 Hz ≤ f ≤ 100 KHz, Tj = 25} ^O_C
-
Ripple Rejection
RR f = 120 Hz, 12 V ≤ V_I ≤ 22 V, T_j = 25 ^OC 39
Dropout Voltage
V_{Drop Tj = 25 °C}
-
8
8.3
V
-
8.4
V
-
8.4
V
-
175
mV
-
125
-
80
mV
-
40
-
5.5 mA
-
1.5
mA
-
0.1
60
-
µV
-
-
dB
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