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L4940

STMicroelectronics
Part Number L4940
Manufacturer STMicroelectronics
Description 1.5A very low drop voltage regulator
Published Mar 22, 2005
Detailed Description TO-220 L4940 1.5 A very low drop voltage regulator IC Datasheet - production data D²PAK Table 1. Device summary Or...
Datasheet PDF File L4940 PDF File

L4940
L4940

Overview
TO-220 L4940 1.
5 A very low drop voltage regulator IC Datasheet - production data D²PAK Table 1.
Device summary Order code TO-220 D²PAK Output voltages L4940V5 L4940V85 L4940D2T5-TR L4940D2T12-TR 5V 8.
5 V 12 V Features • Precise 5, 8.
5, 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 and D²PAK packages and with several fixed output voltages, making it useful in a wide range of industrial and consumer applications.
Thanks to their very low input/output voltage drop, these devices are particularly suitable for battery-powered equipment, reducing consumption and prolonging battery-life.
Each type employs internal current limiting, anti-saturation circuit, thermal shutdown and safe area protection.
April 2015 This is information on a product in full production.
DocID2141 Rev 14 1/25 www.
st.
com Contents Contents L4940 1 Block diagram .
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3 2 Pin configuration .
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4 3 Maximum ratings .
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5 4 Test circuits .
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6 5 Electrical characteristics .
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7 6 Performance characteristics .
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9 7 Application circuits .
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13 8 Package information .
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15 8.
1 TO-220 (dual gauge) package information .
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