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L78M05ACDT STM
Datasheet
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ST MICROELECTRONICS L78M05ACDT STM Datasheet

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Features
TO-220
DPAK
TO-220FP
IPAK
• 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
L78M
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 assoc ia ted with sing le 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 DocID2146 Rev 20 1/46
This is information on a product in full production.
www.st.com
Contents L78M
Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.1 Design considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
10 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
2/46 DocID2146 Rev 20
L78M Diagram

1 Diagram

Figure 1. Block diagram

DocID2146 Rev 20 3/46
46
Pin configuration L78M
TO220FP
IPAK
TO-220
DPAK

2 Pin configuration

Figure 2. Pin connections (top view)

Figure 3. Schematic diagram

4/46 DocID2146 Rev 20
L78M Maximum ratings

3 Maximum ratings

Table 1. Absolute maximum ratings

Symbol Parameter Value Unit
for V
= 5 to 18 V 35
O
= 20, 24 V 40
for V
O
for L78MxxAC 0 to 125
for L78MxxC 0 to 150
V
°Cfor L78MxxAB -40 to 125
T
P
T
V
I
STG
OP
DC input voltage
I
Output current Internally limited mA
O
Power dissipation Internally limited mW
D
Storage temperature range - 65 to 150 °C
Operating junction temperature range
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 DPAK IPAK Unit
R R
Thermal resistance junc tion-case 5 5 8 8 °C/W
thJC
Thermal resistance junction-ambient 50 60 100 100 °C/W
thJA

Figure 4. Application circuit

DocID2146 Rev 20 5/46
46
Test circuits L78M

4 Test circuits

Figure 5. DC parameter

Figure 6. Load regulation

Figure 7. Ripple rejection

6/46 DocID2146 Rev 20
L78M Electrical characterist ics

5 Electrical characteristics

Refer to the test circuits, TJ = 25 °C, VI = 10 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified.
Symbol Parameter Test conditions Min. Typ. Max. Unit

Table 3. Electrical characteristics of L78M05C

V V
ΔV
ΔV
ΔI
Output voltage 4.8 5 5.2 V
O
Output voltage IO = 5 to 350 mA, VI = 7 to 20 V 4.75 5 5.25 V
O
= 7 to 25 V, IO = 200 mA 100
V
Line regulation
O
Load regulation
O
I
Quiescent curr ent 6 mA
d
Quiescent current change
d
I
VI = 8 to 25 V, IO = 200 mA 50 I
= 5 to 500 mA, TJ = 25 °C 100
O
= 5 to 200 mA, TJ = 25 °C 50
I
O
I
= 5 to 350 mA 0.5
O
= 200 mA, VI = 8 to 25 V 0.8
I
O
mV
mV
mA
ΔVO/ΔT Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -0.5 mV/°C
SVR Supply voltage rejection V
= 8 to 18 V, f = 120 Hz, IO = 300 mA 62 dB
I
eN Output noise voltage B = 10 Hz to 100 kHz 40 µV V I
Dropout voltage 2 V
d
Short circuit current VI = 35 V 300 mA
sc
DocID2146 Rev 20 7/46
46
Electrical characteristics L78M
Refer to the test circuits, VI = 10 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125 °C (AB), T
Symbol Parameter Test conditions Min. Typ. Max. Unit
= 0 to 125 °C (AC) unless otherwise specified.
J

Table 4. Electrical characteristics of L78M05A

V V
ΔV
ΔV
ΔI
ΔV
SVR Supply voltage rejection
eN Output noise voltage B =10 Hz to 100 kHz, T V I
I
Output voltage TJ = 25°C 4.9 5 5.1 V
O
Output voltage IO = 5 to 350 mA, VI = 7 to 20 V 4.8 5 5.2 V
O
V
= 7 to 25 V, IO = 200 mA, TJ = 25°C 100
Line regulation
O
Load regulation
O
I
Quiescent curr ent TJ = 25°C 6 mA
d
Quiescent current change
d
/ΔT Output voltage drift IO = 5 mA -0.5 mV/°C
O
Dropout voltage TJ = 25°C 2 V
d
Short circuit current TJ = 25°C, VI = 35 V 300 mA
sc
Short circuit peak current TJ = 25°C 700 mA
scp
I
= 8 to 25 V, IO = 200 mA, TJ = 25°C 50
V
I
= 5 to 500 mA, TJ = 25°C 100
I
O
IO = 5 to 200 mA, TJ = 25°C 50
= 5 to 350 mA 0.5
I
O
IO = 200 mA, VI = 8 to 25 V 0.8
= 8 to 18 V , f = 120 Hz, IO = 300 mA,
V
I
T
= 25°C
J
= 25°C 40 µV
J
62 dB
mV
mV
mA
8/46 DocID2146 Rev 20
L78M Electrical characterist ics
Refer to the test circuits, TJ = 25 °C, VI = 11 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified.
Symbol Parameter Test conditions Min. Typ. Max. Unit

Table 5. Electrical characteristics of L78M06C

V V
ΔV
ΔV
ΔI
ΔV
SVR Supply voltage rejection V
Output voltage 5.75 6 6.25 V
O
Output voltage IO = 5 to 350 mA, VI = 8 to 21 V 5.7 6 6.3 V
O
V
= 8 to 25 V, IO = 200 mA 100
Line regulation
O
Load regulation
O
I
Quiescent curr ent 6 mA
d
Quiescent current change
d
/ΔT Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -0.5 mV/°C
O
I
= 9 to 25 V, IO = 200 mA 50
V
I
= 5 to 500 mA, TJ = 25 °C 120
I
O
IO = 5 to 200 mA, TJ = 25 °C 60
= 5 to 350 mA 0.5
I
O
IO = 200 mA, VI = 9 to 25 V 0.8
= 9 to 19 V, f = 120 Hz, IO = 300 mA 59 dB
I
eN Output noise voltage B = 10 Hz to 100 kHz 45 µV V I
Dropout voltage 2 V
d
Short circuit current VI = 35 V 270 mA
sc
mV
mV
mA
DocID2146 Rev 20 9/46
46
Electrical characteristics L78M
Refer to the test circuits, VI = 11 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125 °C (AB), T
Symbol Parameter Test conditions Min. Typ. Max. Unit
= 0 to 125 °C (AC) unless otherwise specified.
J

Table 6. Electrical characteristics of L78M06A

V V
ΔV
ΔV
ΔI
ΔV
SVR Supply voltage rejection
Output voltage TJ = 25°C 5.88 6 6.12 V
O
Output voltage IO = 5 to 350 mA, VI = 8 to 21 V 5.75 6 6.3 V
O
V
= 8 to 25 V, IO = 200 mA, TJ = 25°C 100
Line regulation
O
Load regulation
O
I
Quiescent curr ent TJ = 25°C 6 mA
d
Quiescent current change
d
/ΔT Output voltage drift IO = 5 mA -0.5 mV/°C
O
I
= 9 to 25 V, IO = 200 mA, TJ = 25°C 30
V
I
= 5 to 500 mA, TJ = 25°C 120
I
O
IO = 5 to 200 mA, TJ = 25°C 60
= 5 to 350 mA 0.5
I
O
IO = 200 mA, VI = 9 to 25 V 0.8
= 9 to 19 V , f = 120 Hz, IO = 300 mA,
V
I
T
= 25°C
J
59 dB
eN Output noise voltage B =10 Hz to 100 kHz 45 µV V I
I
Dropout voltage TJ = 25°C 2 V
d
Short circuit current TJ = 25°C, VI = 35 V 270 mA
sc
Short circuit peak current TJ = 25°C 700 mA
scp
mV
mV
mA
10/46 DocID2146 Rev 20
L78M Electrical characterist ics
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 Parameter Test conditions Min. Typ. Max. Unit

Table 7. Electrical characteristics of L78M08C

V V
ΔV
ΔV
ΔI
ΔV
SVR Supply voltage rejection
Output voltage 7.7 8 8.3 V
O
Output voltage IO = 5 to 350 mA, VI = 10.5 to 23 V 7.6 8 8.4 V
O
V
= 10.5 to 25 V, IO = 200 mA 100
Line regulation
O
Load regulation
O
I
Quiescent curr ent 6 mA
d
Quiescent current change
d
/ΔT Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -0.5 mV/°C
O
I
= 11 to 25 V, IO = 200 mA 50
V
I
= 5 to 500 mA, TJ = 25 °C 160
I
O
IO = 5 to 200 mA, TJ = 25 °C 80
= 5 to 350 mA 0.5
I
O
IO = 200 mA, VI = 10.5 to 25 V 0.8
= 11.5 to 21.5 V, f = 120 Hz,
V
I
I
= 300 mA
O
56 dB
eN Output noise voltage B = 10 Hz to 100 kHz 52 µV V I
Dropout voltage 2 V
d
Short circuit current VI = 35 V 250 mA
sc
mV
mV
mA
DocID2146 Rev 20 11/46
46
Electrical characteristics L78M
Refer to the test circuits, VI = 14 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125 °C (AB), T
Symbol Parameter Test conditions Min. Typ. Max. Unit
= 0 to 125 °C (AC) unless otherwise specified.
J

Table 8. Electrical characteristics of L78M08A

V V
ΔV
ΔV
ΔI
ΔV
SVR Supply voltage rejection
eN Output noise voltage B =10 Hz to 100 kHz, T V I
I
Output voltage TJ = 25°C 7.84 8 8.16 V
O
Output voltage IO = 5 to 350 mA, VI = 10.5 to 23 V 7.7 8 8.3 V
O
VI = 10.5 to 25 V, IO = 200 mA,
= 25°C
T
Line regulation
O
Load regulation
O
I
Quiescent curr ent TJ = 25°C 6 mA
d
Quiescent current change
d
/ΔT Output voltage drift IO = 5 mA -0.5 mV/°C
O
Dropout voltage TJ = 25°C 2 V
d
Short circuit current TJ = 25°C, VI = 35 V 250 mA
sc
Short circuit peak current TJ = 25°C 700 mA
scp
J
= 11 to 25 V, IO = 200 mA, TJ = 25°C 30
V
I
I
= 5 to 500 mA, TJ = 25°C 160
O
= 5 to 200 mA, TJ = 25°C 80
I
O
I
= 5 to 350 mA 0.5
O
= 200 mA, VI = 10.5 to 25 V 0.8
I
O
VI = 11.5 to 21.5 V, f = 120 Hz
= 300 mA, TJ = 25°C
I
O
= 25°C 52 µV
J
56 dB
100
mV
mV
mA
12/46 DocID2146 Rev 20
L78M Electrical characterist ics
Refer to the test circuits, TJ = 25 °C, VI = 15 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified.
Symbol Parameter Test conditions Min. Typ. Max. Unit

Table 9. Electrical characteristics of L78M09C

V V
ΔV
ΔV
ΔI
ΔV
SVR Supply voltage rejection
Output voltage 8.65 9 9.35 V
O
Output voltage IO = 5 to 350 mA, VI = 11.5 to 24 V 8.55 9 9.45 V
O
V
= 11.5 to 25 V, IO = 200 mA 100
Line regulation
O
Load regulation
O
I
Quiescent curr ent 6 mA
d
Quiescent current change
d
/ΔT Output voltage drift IO = 5 mA, TJ = 0 to 125 °C -0.5 mV/°C
O
I
= 12 to 25 V, IO = 200 mA 50
V
I
= 5 to 500 mA, TJ = 25 °C 180
I
O
IO = 5 to 200 mA, TJ = 25 °C 90
= 5 to 350 mA 0.5
I
O
IO = 200 mA, VI = 11.5 to 25 V 0.8
= 12.5 to 23 V, f = 120 Hz,
V
I
I
= 300 mA
O
56 dB
eN Output noise voltage B = 10 Hz to 100 kHz 58 µV V I
Dropout voltage 2 V
d
Short circuit current VI = 35 V 250 mA
sc
mV
mV
mA
DocID2146 Rev 20 13/46
46
Electrical characteristics L78M
Refer to the test circuits, VI = 15 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125 °C (AB), T
Symbol Parameter Test conditions Min. Typ. Max. Unit
= 0 to 125 °C (AC) unless otherwise specified.
J

Table 10. Electrical characteristics of L78M09A

V V
ΔV
ΔV
ΔI
ΔV
SVR Supply voltage rejection
eN Output noise voltage B =10 Hz to 100 kHz, T V I
I
Output voltage TJ = 25°C 8.82 9 9.18 V
O
Output voltage IO = 5 to 350 mA, VI = 11.5 to 24 V 8.64 9 9.36 V
O
VI = 11.5 to 25 V, IO = 200 mA,
= 25°C
T
Line regulation
O
Load regulation
O
I
Quiescent curr ent TJ = 25°C 6 mA
d
Quiescent current change
d
/ΔT Output voltage drift IO = 5 mA -0.5 mV/°C
O
Dropout voltage TJ = 25°C 2 V
d
Short circuit current VI = 35 V, TJ = 25°C 250 mA
sc
Short circuit peak current TJ = 25°C 700 mA
scp
J
= 12 to 25 V, IO = 200 mA, TJ = 25°C 30
V
I
I
= 5 to 500 mA, TJ = 25°C 180
O
= 5 to 200 mA, TJ = 25°C 90
I
O
I
= 5 to 350 mA 0.5
O
= 200 mA, VI = 11.5 to 25 V 0.8
I
O
VI = 12.5 to 23 V, f = 120 Hz,
= 300 mA, TJ = 25°C
I
O
= 25°C 52 µV
J
56 dB
100
mV
mV
mA
14/46 DocID2146 Rev 20
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