TL317CPWRG4 Equivalent & Substitute Parts

Part Overview

The TL317CPWRG4 is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 100mA output current with an adjustable voltage range from 1.2V to 32V, suitable for power management applications requiring precision voltage regulation. The device is classified as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	TL317CPWRG4
Category	Power Management (PMIC)
Description	Linear Voltage Regulator IC Positive Adjustable 1 Output 100mA 8-TSSOP
Output Configuration	Positive
Output Type	Adjustable
Voltage - Input (Max)	38V
Voltage - Output (Min/Fixed)	1.2V
Voltage - Output (Max)	32V
Current - Output	100mA
PSRR	65dB (120Hz)
Protection Features	Over Current, Over Temperature
Operating Temperature	0°C ~ 125°C
Package / Case	8-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the TL317CPWRG4 are qualified based on the following critical parameters that determine functional equivalence:

Output Configuration: Positive
Output Type: Adjustable
Voltage - Input (Max): 38V
Voltage - Output Range: 1.2V to 32V
Current - Output: 100mA
Package / Case: 8-TSSOP
Operating Temperature: 0°C ~ 125°C
Protection Features: Over Current, Over Temperature (minimum requirement)
RoHS Status: ROHS3 Compliant

All substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct functional replacement in existing designs.

Parameter Comparison

Parameter	TL317CPWRG4 (Main)	LM317LCPWR (MFR Recommended)	TL317CPWR (Parametric Equivalent)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable
Voltage - Input (Max)	38V	38V	38V
Voltage - Output (Min/Fixed)	1.2V	1.2V	1.2V
Voltage - Output (Max)	32V	32V	32V
Current - Output	100mA	100mA	100mA
PSRR	65dB (120Hz)	80dB ~ 65dB (120Hz)	65dB (120Hz)
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature
Operating Temperature	0°C ~ 125°C	0°C ~ 125°C	0°C ~ 125°C
Package / Case	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Last Time Buy	Last Time Buy

Engineering Selection Recommendations

LM317LCPWR (MFR Recommended Substitute)

The LM317LCPWR is the manufacturer-recommended substitute for the obsolete TL317CPWRG4. This part maintains all critical electrical specifications while offering enhanced protection features including Short Circuit protection in addition to Over Current and Over Temperature protection. The LM317LCPWR carries Last Time Buy status, indicating extended availability compared to the obsolete main part. PSRR performance is equivalent or superior (80dB ~ 65dB at 120Hz). This part is ROHS3 Compliant and carries unlimited moisture sensitivity rating, matching the original specification.

TL317CPWR (Parametric Equivalent)

The TL317CPWR provides parametric equivalence to the TL317CPWRG4, maintaining identical electrical performance specifications including PSRR (65dB at 120Hz) and protection features. This part differs only in packaging format (Cut Tape versus the original packaging) and carries Last Time Buy status. It is suitable for applications where the original TL317 series performance is required and packaging format is not a constraint.

Frequently Asked Questions (FAQ)

Q: Can LM317LCPWR be used as a direct replacement for TL317CPWRG4?

A: Yes. The LM317LCPWR meets all critical electrical and mechanical specifications of the TL317CPWRG4, including output voltage range (1.2V to 32V), output current (100mA), input voltage rating (38V max), operating temperature range (0°C to 125°C), and 8-TSSOP package. The addition of Short Circuit protection in the LM317LCPWR provides enhanced functionality without compromising compatibility.

Q: What is the difference between TL317CPWR and LM317LCPWR?

A: Both parts are functionally equivalent to the TL317CPWRG4. The primary differences are: (1) LM317LCPWR includes Short Circuit protection in addition to Over Current and Over Temperature protection, while TL317CPWR includes Over Current and Over Temperature protection only; (2) LM317LCPWR offers PSRR performance of 80dB ~ 65dB at 120Hz, while TL317CPWR maintains 65dB at 120Hz; (3) Packaging format differs (Cut Tape & Digi-Reel® versus Cut Tape).

Q: Are all substitute parts in the same 8-TSSOP package?

A: Yes. All listed substitute parts use the 8-TSSOP package with 0.173" width and 4.40mm dimensions, ensuring mechanical compatibility with existing PCB layouts and sockets.

Q: Do the substitute parts maintain RoHS3 compliance?

A: Yes. Both LM317LCPWR and TL317CPWR are ROHS3 Compliant with unlimited moisture sensitivity rating (MSL 1), matching the compliance profile of the original TL317CPWRG4.

Q: Why is the TL317CPWRG4 marked as Obsolete?

A: The TL317CPWRG4 has reached end-of-life status. Substitute parts with Last Time Buy status (LM317LCPWR and TL317CPWR) provide continued design support and procurement options for applications currently using the obsolete part.

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