Product overview
Description
The L4931 is a very low drop regulator available in SO-8, DPAK, PPAK and TO-92 packages and in a wide range of output voltages.
The very low drop voltage (0.4 V) and the very low quiescent current make it particularly suitable for low noise, low power applications and especially in battery-powered systems.
A TTL compatible shutdown logic control function is available in PPAK and SO-8 packages. This means that when the device is used as a local regulator, a part of the board can be put in standby mode, decreasing the total power consumption. It requires only a 2.2 µF capacitor for stability allowing space and cost saving.
The L4931 is available as automotive-grade in SO-8 package only. This device is qualified according to the specification AEC-Q100 of the automotive market, in the temperature range from 40 °C to 125 °C, and the statistical tests: PAT, SYL, SBL are performed.
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All features
- Very low dropout voltage (0.4 V)
- Very low quiescent current
- Typ. 50 µA in OFF mode, 600 µA in ON mode
- Output current up to 250 mA
- Logic controlled electronic shutdown
- Output voltages: 3.3; 3.5; 5; 12 V
- Automotive-grade product: 3.3 V VOUT in SO-8 package only
- Internal current and thermal limit
- Only 2.2 µF for stability
- Available in ± 1 % (AB) or 2 % (C) selection at 25 °C
- Supply voltage rejection: 70 dB typ. for 5 V version
- Temperature range: from -40 to 125 °C
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - L4931
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3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L4931ABD120TR | NRND | SO-8 | Industrial | Ecopack2 | |
| L4931ABD33-TR | Active | SO-8 | Industrial | Ecopack2 (**) | |
| L4931ABD50-TR | Active | SO-8 | Industrial | Ecopack2 | |
| L4931ABDT33-TR | Active | DPAK | Industrial | Ecopack2 | |
| L4931ABDT35TR | NRND | DPAK | Industrial | Ecopack2 | |
| L4931ABDT50-TR | NRND | DPAK | Industrial | Ecopack2 | |
| L4931CD33-TR | Active | SO-8 | Industrial | Ecopack2 (**) | |
| L4931CD33-TRY | Active | SO-8 | Automotive | Ecopack2 | |
| L4931CD35-TR | NRND | SO-8 | Industrial | Ecopack2 | |
| L4931CD50-TR | Active | SO-8 | Industrial | Ecopack2 | |
| L4931CDT33-TR | Active | DPAK | Industrial | Ecopack2 | |
| L4931CDT50-TR | Active | DPAK | Industrial | Ecopack2 | |
| L4931CZ33-AP | NRND | TO-92 | Industrial | Ecopack2 | |
| L4931CZ50-AP | Active | TO-92 | Industrial | Ecopack2 |
L4931ABD33-TR
Package:
SO-8Material Declaration**:
L4931ABDT35TR
Package:
DPAKMaterial Declaration**:
L4931CD33-TR
Package:
SO-8Material Declaration**:
L4931CD35-TR
Package:
SO-8Material Declaration**:
(**) 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) | Temperature (°C) | Operating Temperature (°C) (max) | Grade | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | ||
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| L4931CZ33-AP | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931CD50-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931ABD33-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931CD33-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931ABDT50-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931CDT33-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931CD35-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931ABDT35TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931CZ50-AP | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931ABD120TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931ABD50-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931ABDT33-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931CDT50-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| L4931CD33-TRY | | | distributors No availability of distributors reported, please contact our sales office |
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L4931CZ33-AP NRND
L4931CD50-TR Active
L4931ABD33-TR Active
L4931CD33-TR Active
L4931ABDT50-TR NRND
L4931CDT33-TR Active
L4931CD35-TR NRND
L4931ABDT35TR NRND
L4931CZ50-AP Active
L4931ABD120TR NRND
L4931ABD50-TR Active
L4931ABDT33-TR Active
L4931CDT50-TR Active
L4931CD33-TRY 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