Document
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.
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Contents
Contents
L78M
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
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L78M
1 Diagram
Figure 1. Block diagram
Diagram
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Pin configuration
2 Pin configuration
Figure 2. Pin connections (top view)
L78M
TO-220
TO220FP
DPAK
Figure 3. Schematic diagram
IPAK
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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.