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 1.5A 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)：1.25V
- Voltage - Output (Max)：37V
- Voltage Dropout (Max)：-
- Current - Output：1.5A
- Current - Quiescent (Iq)：5 mA
- Current - Supply (Max)：-
- PSRR：80dB ~ 65dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-55°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-204AA, TO-3
- Supplier Device Package：TO-3-2
- Grade：-
- Qualification：-
Download product information
Overview
The LM117K STEEL/NOPB is a three-terminal adjustable positive voltage regulator manufactured by Texas Instruments. It provides an output current of 1.5 A with an adjustable output voltage range from 1.2 V to 37 V, set via two external resistors. The device features internal current limiting, thermal overload protection, and safe operating area protection. It utilizes a TO-220 package for through-hole mounting.
Feature Summary
- Adjustable output voltage capability using external resistors
- Integrated current limiting and thermal overload protection
- Robust construction with safe operating area protection
Applications
- General-purpose linear power supplies
- On-card regulation systems
- Programmable output power supplies
Procurement Notes
Verify the specific suffix 'STEEL' against official Texas Instruments documentation to confirm it denotes a specialized steel tab variant or packaging option distinct from standard plastic packages. Ensure the NOPB designation confirms lead-free compliance. Cross-reference the exact part number with the manufacturer's current datasheet to validate availability and pinout compatibility before procurement.
Selection Notes
Select this component when a high-current adjustable regulator is required for applications needing robust protection features. The TO-220 package facilitates heat dissipation for continuous 1.5 A operation. Consider thermal management requirements based on the input-output voltage differential and ambient temperature conditions during system design.
Part Context
This part belongs to the LM117/LM317 family of three-terminal adjustable regulators known for their reliability and wide usage in industrial and commercial electronics. The LM117 variant typically offers military-grade specifications compared to the commercial LM317, ensuring performance across extended temperature ranges.
Replacement Considerations
LM317K (Standard commercial equivalent)
FAQ
What is the maximum output current?
The device supports a maximum output current of 1.5 A.
How is the output voltage determined?
The output voltage is adjusted between 1.2 V and 37 V using two external resistors connected to the adjustment pin.
