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PDF L78M Data sheet ( Hoja de datos )

Número de pieza L78M
Descripción Precision 500 mA regulators
Fabricantes STMicroelectronics 
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No Preview Available ! L78M Hoja de datos, Descripción, Manual

L78M
TO-220
TO-220FP
DPAK
IPAK
Features
Output current to 0.5 A
Output voltages of 5; 6; 8; 9; 10; 12; 15; 24 V
Thermal overload protection
Short circuit protection
Output transition SOA protection
Output voltage tolerance: 2% (AB and AC
versions) or 4% (C version)
Guaranteed in extended temperature range
Precision 500 mA regulators
Datasheet - production data
Description
The L78M series of three-terminal positive
regulators is available in TO-220, TO-220FP,
DPAK and IPAK packages and with several fixed
output voltages, making it useful in a wide range
of applications. These regulators can provide
local on-card regulation, eliminating the
distribution problems associated with single point
regulation. Each type employs internal current
limiting, thermal shutdown and safe area
protection, resulting it essentially indestructible. If
adequate heat sinking is provided, they can
deliver over 0.5 A output current. Although
designed primarily as fixed voltage regulators,
these devices can be used with external
components to obtain adjustable voltage and
currents.
June 2014
This is information on a product in full production.
DocID2146 Rev 20
1/46
www.st.com

1 page




L78M pdf
L78M
3 Maximum ratings
Maximum ratings
Table 1. Absolute maximum ratings
Symbol
Parameter
VI
IO
PD
TSTG
TOP
DC input voltage
Output current
for VO = 5 to 18 V
for VO = 20, 24 V
Power dissipation
Storage temperature range
for L78MxxAC
Operating junction temperature range for L78MxxAB
for L78MxxC
Value
35
40
Internally limited
Internally limited
- 65 to 150
0 to 125
-40 to 125
0 to 150
Unit
V
mA
mW
°C
°C
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Table 2. Thermal data
Symbol
Parameter
TO-220 TO-220FP
RthJC
RthJA
Thermal resistance junction-case
Thermal resistance junction-ambient
5
50
5
60
DPAK
8
100
IPAK
8
100
Unit
°C/W
°C/W
Figure 4. Application circuit
DocID2146 Rev 20
5/46
46

5 Page





L78M arduino
L78M
Electrical characteristics
Refer to the test circuits, TJ = 25 °C, VI = 14 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF
unless otherwise specified.
Symbol
Table 7. Electrical characteristics of L78M08C
Parameter
Test conditions
Min.
VO
VO
ΔVO
ΔVO
Id
ΔId
ΔVO/ΔT
SVR
eN
Output voltage
Output voltage
Line regulation
Load regulation
Quiescent current
Quiescent current change
Output voltage drift
Supply voltage rejection
Output noise voltage
IO = 5 to 350 mA, VI = 10.5 to 23 V
VI = 10.5 to 25 V, IO = 200 mA
VI = 11 to 25 V, IO = 200 mA
IO = 5 to 500 mA, TJ = 25 °C
IO = 5 to 200 mA, TJ = 25 °C
IO = 5 to 350 mA
IO = 200 mA, VI = 10.5 to 25 V
IO = 5 mA, TJ = 0 to 125 °C
VI = 11.5 to 21.5 V, f = 120 Hz,
IO = 300 mA
B = 10 Hz to 100 kHz
Vd Dropout voltage
Isc Short circuit current
VI = 35 V
7.7
7.6
56
Typ.
8
8
-0.5
52
2
250
Max. Unit
8.3 V
8.4 V
100
mV
50
160
mV
80
6 mA
0.5
mA
0.8
mV/°C
dB
µV
V
mA
DocID2146 Rev 20
11/46
46

11 Page







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