ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 5A TO3-2
- Series：-
- Mfr：Texas Instruments
- Package：Tray
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：32V
- Voltage Dropout (Max)：-
- Current - Output：5A
- Current - Quiescent (Iq)：-
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Temperature
- Operating Temperature：-55°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：TO-204AA, TO-3
- Supplier Device Package：TO-3-2
- Grade：-
- Qualification：-
Download product information
Overview
The LM138K STEEL/NOPB is a military-grade, adjustable linear voltage regulator manufactured by Texas Instruments. It features a TO-3-2 package designed for through-hole mounting. The device provides an output current of 5 A with an adjustable output voltage range from 1.2 V to 32 V. It operates within an input voltage range of 4.2 V to 40 V and supports a power dissipation of 50 W. The unit functions reliably across a temperature range of -55°C to +125°C, ensuring stable performance in demanding environments.
Feature Summary
- Military-grade construction ensures high reliability and stability under extreme conditions.
- Adjustable output voltage allows flexible configuration for various circuit requirements.
- High current capability supports loads up to 5 A without external components.
Applications
- Military electronic systems requiring robust power regulation
- Aerospace equipment operating in harsh thermal environments
- Industrial control systems needing high-current stable DC supplies
Procurement Notes
Verify the specific suffix 'STEEL/NOPB' to confirm military grade qualification and lead-free status. Ensure the TO-3-2 through-hole package matches your PCB layout. Confirm that the 50 W power dissipation rating aligns with your thermal management design. Check datasheet specifications for line and load regulation limits relevant to your application precision needs.
Selection Notes
Select this component when military-grade reliability and high current output are required. The adjustable voltage feature offers flexibility compared to fixed regulators. Consider the TO-3-2 package size and thermal requirements for heat dissipation. Compare against standard commercial grades if environmental constraints allow for cost reduction.
Part Context
This part belongs to the LM138 series of adjustable linear regulators. The 'STEEL' designation indicates a military specification variant, offering enhanced durability over commercial versions. It serves as a high-power solution for applications where standard regulators may fail due to thermal or environmental stress.
Replacement Considerations
LM138K (Commercial Grade)
FAQ
What is the maximum power dissipation?
The maximum power dissipation is 50 W.
Is this regulator suitable for aerospace applications?
Yes, its military-grade construction and wide temperature range make it suitable for aerospace use.
