L78M00T Series
[L78M24T]
Recommended Operating Conditions at Ta = 25˚C
Input Voltage
Output Current
Parameter
Symbol
VIN
IOUT
Conditions
Ratings
Unit
27 to 35 V
5 to 500 mA
Operating Characteristics at Ta = 25˚C, VIN=33V, IOUT=350mA, See specified Test Circuit.
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Output Voltage
Line Regulation
Load Regulation
Output Voltage
Current Dissipation
Current Dissipation Variation (Line)
Current Dissipation Variation (Load)
Output Noise Voltage
Ripple Rejection
Minimum Input-Output Voltage Drop
Short Current
Peak Output Current
VOUT Tj=25°C
∆Vo LINE
Tj=25°C, 27V≤VIN≤35V, IOUT=200mA
Tj=25°C, 28V≤VIN≤35V, IOUT=200mA
∆Vo LOAD
Tj=25°C, 5mA≤IOUT≤500mA
Tj=25°C, 5mA≤IOUT≤200mA
VOUT 27V≤VIN≤35V, 5mA≤IOUT=350mA
ICC
Tj=25°C
∆ICC LINE 27V≤VIN≤35V, IOUT=200mA
∆ICC LOAD 5mA≤IOUT≤350mA
VNO 10Hz≤f≤100kHz
Rrej
f=120Hz, 28V≤VIN≤35V, Tj=25°C, IOUT=100mA
f=120Hz, 28V≤VIN≤35V, Tj=25°C, IOUT=300mA
VDROP IOUT=350mA
IOS
Tj=25°C, VIN=35V, to GND
IOP
Tj=25°C
23.0 24.0 25.0 V
10.0 100 mV
5.0
50 mV
480 mV
240 mV
22.8
25.2. V
5.0
6.0 mA
0.8 mA
0.5 mA
170
µV
50
dB
50
70
dB
2.0
V
300
mA
0.7
A
Specified Test Circuit (Common to L78M00T series)
The allowable power dissipation (Pd max) is 1.0W (Ta=25°C) with no fin attached. When the L78M00T series are
surface-mounted on a hybrid IC board or printed circuit board, a high allowable power dissipation can be obtained,
though they are placed in a small-sized package.
Shown below is the relationship between the Cu-foiled area and the allowable power dissipation when the L78M00T
series are surface-mounted on a glass epoxy board (50×50×0.8mm3).
No.2609–7/8