L4940XX Datasheet, PDF (1/23 Pages) STMicroelectronics – Very low drop 1.5 A regulator

L4940xx
Very low drop 1.5 A regulator
Features
■ Precise 5, 8.5, 10, 12 V outputs
■ Low dropout voltage (450 mV typ. at 1 A)
■ Very low quiescent current
■ Thermal shutdown
■ Short circuit protection
■ Reverse polarity protection
Description
The L4940 series of three terminal positive
regulators is available in TO-220, TO-220FP and
D²PAK packages and with several fixed output
voltages, making it useful in a wide range of
industrial and consumer applications. Thanks to
its very low input/output voltage drop, these
devices are particularly suitable for batteries
powered equipment, reducing consumption and
TO-220
TO-220FP
D²PAK
prolonging battery life. Each type employs internal
current limiting, antisaturation circuit, thermal
shut-down and safe area protection.
Table 1. Device summary
Part number
L4940xx5
L4940xx85
L4940xx10
L4940xx12
TO-220
L4940V5
L4940V85
February 2008
Order code
TO-220FP
L4940P85
Rev 10
D²PAK
L4940D2T5-TR
L4940D2T85-TR
L4940D2T10-TR
L4940D2T12-TR
Output voltage
5V
8.5 V
10 V
12 V
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