Product overview
Description
The L4949ED-E and L4949EP-E are monolithic
integrated 5V voltage regulators with a very low
dropout output and additional functions as power- on reset and input voltage sense. They are
designed for supplying the microcomputer
controlled systems especially in automotive applications.
-
All features
- AEC-Q100 qualified
- ECOPACK®: lead free and RoHS compliant
- Operating DC supply voltage range 5 V - 28 V
- Transient supply voltage up to 40 V
- Extremely low quiescent current in standby
- High precision standby output voltage 5V±1%
- Output current capability up to 100 mA
- Very low dropout voltage less than 0.5 V
- Reset circuit sensing the output voltage
- Programmable reset pulse delay with external capacitor
- Voltage sense comparator
- Thermal shutdown and short circuit protections
Circuit Diagram
All resources
Resource title | Version | Latest update |
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Product Specifications (1)
Resource title | Version | Latest update | ||
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4.0 | 26 Sep 2018 | 26 Sep 2018 |
Selection Guides (1)
Resource title | Version | Latest update | ||
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6.0 | 21 Jun 2024 | 21 Jun 2024 |
Brochures (1)
Resource title | Version | Latest update | ||
---|---|---|---|---|
3.0 | 27 Jul 2022 | 27 Jul 2022 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - L4949EP-E
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Symbols

Footprints

3D models
Quality and Reliability
Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
---|---|---|---|---|---|
L4949EP-E | NRND | SO-20 | Automotive | Ecopack2 | |
L4949EPTR-E | NRND | SO-20 | Automotive | Ecopack2 |
Marketing Status
Package
SO-20
Grade
Automotive
RoHS Compliance Grade
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) (min) | Operating Temperature (°C) (max) | ||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
L4949EP-E | NRND | 0.8727 / 1k | Available at 1 distributors Distributor availability of L4949EP-E
Distributor reported inventory date: 3/29/2025 | | | | Buy from Distributor | | SO-20 | Tube | MALAYSIA | EAR99 | NEC | |||||||||||||||||||||||||
L4949EPTR-E | NRND | 0.8728 / 1k | Available at 3 distributors Distributor availability of L4949EPTR-E
Distributor reported inventory date: 3/31/2025 | | | | Buy from Distributor | | SO-20 | Tape and Reel | MALAYSIA | EAR99 | NEC |
L4949EP-E NRND
Part Number:
L4949EP-E
Farnell Element14
Stock
1105Min.Order
1Distributor reported inventory date: 3/29/2025
Stock
Min.Order
L4949EPTR-E NRND
Part Number:
L4949EPTR-E
Farnell Element14
Stock
886Min.Order
1MOUSER
Stock
2038Min.Order
1FUTURE
Stock
1000Min.Order
1000Distributor reported inventory date: 3/31/2025
Stock
Min.Order
(*) 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