LM78L 查看數據表（PDF） - TAITRON Components Incorporated
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LM78L Datasheet PDF : 14 Pages
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100mA Positive Voltage Regulator
LM78L
For LM78L18 (VIN=27V, IOUT=40mA, 0° C<TJ<125° C, C1=0.33µF, CO=0.1µF, unless otherwise specified)
Symbol
Description
LM78L18
Min.
Typ.
Max.
Unit
Test Conditions
17.28 18.00 18.72 V
TJ=25℃
VOUT
Output Voltage
17.10 - 18.90 V
21V≤VIN≤33V, IOUT=1mA-40mA
17.10
-
18.90 V
21V≤VIN≤VMAX, IOUT=1mA-70mA
Power Dissipation<0.5W
∆VOUT Load Regulation
-
30 170 mV
TJ=25℃, 1mA≤IOUT≤100mA
-
15 85 mV
TJ=25℃, 1mA≤IOUT≤40mA
∆VOUT Line Regulation
- 145 300 mV
- 135 250 mV
TJ=25℃, 21V≤VIN≤33V
TJ=25℃, 22V≤VIN≤33V
IQ
Quiescent Current
-
2.0 6.0 mA
VIN=27V, IOUT=0mA, TJ=25℃
∆IQ
Quiescent Current Change
-
-
1.5 mA
-
-
0.1 mA
21V≤VIN≤33V
1mA≤IIN≤40mA
eN
Output Noise Voltage
- 150 -
µV
10Hz≤f≤100KHz
∆VO/∆T
Temperature coefficient of
VOUT
- -1.8 - mV/℃
IOUT=5mA
RR
Ripple Rejection
34 48
-
dB 23V≤VIN≤33V, f=120Hz, TJ=25℃
VD
Dropout Voltage
-
1.7
-
V
TJ=25℃
For LM78L24 (VIN=33V, IOUT=40mA, 0° C<TJ<125° C, C1=0.33µF, CO=0.1µF, unless otherwise specified)
Symbol
Description
LM78L24
Min.
Typ.
Max.
Unit
Test Conditions
23.04 24.00 24.96 V
TJ=25℃
VOUT
Output Voltage
22.8
-
25.2
V
27V≤VIN≤38V, IOUT=1mA-40mA
22.8
-
25.2
V
27V≤VIN≤VMAX, IOUT=1mA-70mA
Power Dissipation<0.5W
∆VOUT Load Regulation
-
40 200 mV
TJ=25℃, 1mA≤IOUT≤100mA
-
20 100 mV
TJ=25℃, 1mA≤IOUT≤40mA
∆VOUT Line Regulation
- 160 300 mV
- 150 250 mV
TJ=25℃, 27V≤VIN≤38V
TJ=25℃, 28V≤VIN≤38V
IQ
Quiescent Current
-
2.2 6.0 mA
VIN=33V, IOUT=0mA, TJ=25℃
∆IQ
Quiescent Current Change
-
-
1.5 mA
-
-
0.1 mA
27V≤VIN≤38V
1mA≤IIN≤40mA
eN
Output Noise Voltage
- 200 -
µV
10Hz≤f≤100KHz
∆VO/∆T
Temperature coefficient of
VOUT
- -2.0 - mV/℃
IOUT=5mA
RR
Ripple Rejection
34 45
-
dB 27V≤VIN≤38V, f=120Hz, TJ=25℃
VD
Dropout Voltage
-
1.7
-
V
TJ=25℃
Note: The maximum steady state usable output current is dependent on input voltage, heat sinking, lead length of
the package and copper pattern of PCB.
www.taitroncomponents.com
Rev. A/DX 2007-06-04
Page 7 of 14
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