Product overview
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.
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All 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
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - L4940
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3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| L4940D2T12-TR | Active | D2PAK | Industrial | Ecopack2 | - | - | |
| L4940D2T5-TR | Active | D2PAK | Industrial | Ecopack2 | - | - | |
| L4940V5 | Active | TO-220 | Industrial | Ecopack2 | - | - | |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Grade | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | ||
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| L4940V5 | | | distributors No availability of distributors reported, please contact our sales office |
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| L4940D2T12-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4940D2T5-TR | | | distributors No availability of distributors reported, please contact our sales office |
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L4940V5 Active
L4940D2T12-TR Active
L4940D2T5-TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors