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L149V is listed in the Voltage Regulators - Linear, Low Drop Out (LDO) Regulators range at ChipApex. The manufacturer field lists STMicroelectronics. Its product description is IC REG LINEAR 4A 5-PENTAWATT. Review the specifications below when checking this part for your BOM.
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators specifications for L149V
- Description：IC REG LINEAR 4A 5-PENTAWATT
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：-
- Output Type：-
- Number of Regulators：1
- Voltage - Input (Max)：20V
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：4A
- Current - Quiescent (Iq)：400 µA
- Current - Supply (Max)：-
- PSRR：-
- Control Features：Enable
- Protection Features：Over Temperature, Short Circuit
- Operating Temperature：-
- Mounting Type：Through Hole
- Package / Case：Pentawatt-5 (Vertical, Bent and Staggered Leads)
- Supplier Device Package：5-PENTAWATT
- Grade：-
- Qualification：-
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators datasheet and documents for L149V
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview
The L149V is a general-purpose power booster in the Pentawatt package, featuring a quasi-complementary Darlington output stage with an associated biasing system and inhibit facility. It operates up to ±20 V supply voltage and delivers a peak output current of 4 A (internally limited), with a DC output current rating of 3 A. The device provides a high slew rate of 30 V/ms and a typical DC current gain of 10,000 at 3 A output. Electrical characteristics are specified at Tj = 25 °C and VS = ±16 V.
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary
- Quasi-complementary Darlington output stage for high current amplification
- Integrated thermal protection and short circuit protection mechanisms
- Inhibit facility for controlling device operation state
- Designed for use within Safe Operating Area (SOA) limits
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications
- Power operational amplifier configurations
- Closed-loop systems requiring increased output current
- High slew-rate linear driver applications
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes
Verify component status as the L149 series is listed as obsolete. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing design constraints given the discontinued status. Review datasheet specifications carefully against current project requirements before procurement.
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes
Select this component when a high-current linear driver is needed to boost the output capability of an operational amplifier. Consider the Pentawatt package for thermal management and the specific electrical characteristics such as the 30 V/ms slew rate and ±20 V operating range. Evaluate the need for the integrated inhibit function and protection features in the target application design.
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context
The L149 belongs to STMicroelectronics' family of power boosters designed to interface with operational amplifiers. It utilizes a Pentawatt package to handle significant power dissipation while maintaining a compact form factor. The device integrates biasing and protection circuits to simplify implementation in linear power applications.
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations
As the L149 is marked obsolete, verify if alternative power boosters from the manufacturer's current portfolio meet the required electrical specifications and pinout compatibility. Consult official replacement guides or contact technical support for validated substitute part numbers.
Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ
What is the maximum peak output current?
The L149 provides a peak output current of 4 A, which is internally limited.
How does the inhibit feature work?
The inhibit input allows turning the device ON or OFF. An ON condition requires ±0.3 V, while an OFF condition requires ±1.8 V relative to the supply rails.
What is the typical DC current gain?
The typical DC current gain (hFE) is 10,000 when tested at a supply voltage of ±16 V and an output current of 3 A.
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