TS79M05CP ROG Equivalent & Substitute Parts

Part Overview

The TS79M05CP ROG is a linear voltage regulator IC manufactured by Taiwan Semiconductor Corporation, designed to provide a fixed negative 5V output at 500mA in a TO-252 (DPAK) surface mount package. This device is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support, production continuity, and system maintenance.

Linear negative voltage regulators of this specification are commonly used in dual-supply analog circuits, operational amplifier biasing networks, and legacy industrial control systems. The obsolete status of the TS79M05CP ROG necessitates the identification of alternative components that maintain electrical and mechanical compatibility with existing designs.

Substiute Parts

TS79M05CP ROG

Taiwan Semiconductor CorporationIn Stock: 1092TS79M05CP ROG Datasheet

Current PartRFQ

UA79M05CKVURG3

Texas InstrumentsIn Stock: 15895UA79M05CKVURG3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TS79M05CP ROG is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Output voltage: -5V fixed
• Output current capability: 500mA minimum
• Output configuration: Negative polarity
• Package type: TO-252-3 (DPAK) surface mount
• Operating temperature range: 0°C ~ 125°C minimum
• RoHS3 compliance status

Acceptable Variation Parameters:

• Maximum input voltage: Substitute may have lower absolute maximum rating than -35V, provided it meets the application's actual input voltage requirements
• Dropout voltage: Substitute may have lower dropout voltage, which improves performance
• PSRR and quiescent current: Substitutes may differ in these secondary performance characteristics
• Protection features: Substitutes may include additional protection features beyond the original design

The UA79M05CKVURG3 manufactured by Texas Instruments qualifies as a direct substitute based on matching output voltage, output current, package configuration, and operating temperature range. Both devices are RoHS3 compliant and suitable for surface mount assembly.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: UA79M05CKVURG3

The UA79M05CKVURG3 is the qualified substitute for the TS79M05CP ROG based on the following engineering criteria:

1. Electrical Compatibility: Both devices deliver -5V fixed output at 500mA with identical operating temperature range (0°C ~ 125°C). The substitute's lower maximum input voltage rating (-25V vs. -35V) is acceptable for applications where the actual input voltage does not exceed -25V.

2. Package Compatibility: Both devices use the TO-252-3 (DPAK) surface mount package with identical pinout and thermal characteristics, enabling direct PCB layout compatibility without redesign.

3. Regulatory Compliance: Both devices are RoHS3 compliant with identical MSL rating (3, 168 Hours), REACH unaffected status, and EAR99 ECCN classification, ensuring supply chain and regulatory continuity.

4. Product Status Consideration: While the TS79M05CP ROG is obsolete, the UA79M05CKVURG3 carries a Last Time Buy status, indicating limited future availability. Long-term design strategies should evaluate alternative -5V regulators with active production status for new designs.

5. Performance Enhancement: The UA79M05CKVURG3 provides improved dropout voltage performance (1.1V @ 350mA vs. 2V @ 500mA) and includes additional protection features (Over Current, Short Circuit) beyond the original design, offering enhanced reliability in the substitute.

Frequently Asked Questions (FAQ)

Q: Can the UA79M05CKVURG3 be used as a direct replacement for the TS79M05CP ROG without PCB modifications?

A: Yes. Both devices share identical TO-252-3 (DPAK) package geometry, pinout configuration, and thermal tab design. Direct PCB substitution is possible without layout changes. No circuit modifications are required for applications where the input voltage remains within the -25V maximum rating of the substitute.

Q: What is the impact of the lower maximum input voltage rating on the UA79M05CKVURG3?

A: The substitute's -25V maximum input rating is lower than the original -35V specification. This is acceptable only if the actual circuit input voltage does not exceed -25V. Applications requiring input voltages between -25V and -35V must retain the original TS79M05CP ROG or identify alternative regulators with higher input voltage ratings.

Q: Are there differences in thermal performance between these devices?

A: Both devices use the TO-252-3 package with identical thermal tab design and MSL rating. Thermal performance is equivalent for equivalent PCB layout and thermal management practices. The substitute's improved dropout voltage may result in lower power dissipation under identical load conditions.

Q: What protection features does the substitute provide that the original does not?

A: The UA79M05CKVURG3 includes Over Current and Short Circuit protection in addition to Over Temperature protection. The TS79M05CP ROG provides Current Limit and Over Temperature protection. The additional protection features in the substitute enhance circuit robustness against fault conditions.

Q: Is the UA79M05CKVURG3 suitable for new designs?

A: The UA79M05CKVURG3 carries a Last Time Buy status, indicating limited future availability. For new designs requiring long-term production support, alternative -5V linear regulators with active production status should be evaluated. The substitute is appropriate for legacy system maintenance and limited-volume production runs.

Q: How do the PSRR specifications compare?

A: The TS79M05CP ROG provides 66dB PSRR at 120Hz, while the UA79M05CKVURG3 provides 60dB PSRR at 120Hz. The 6dB difference represents approximately 50% higher noise rejection in the original device. Applications with stringent noise requirements should evaluate this specification against actual circuit performance requirements.

Q: Are both devices RoHS3 compliant?

A: Yes. Both the TS79M05CP ROG and UA79M05CKVURG3 are RoHS3 compliant with identical MSL rating (3, 168 Hours), REACH unaffected status, and EAR99 ECCN classification, ensuring regulatory compliance for both commercial and industrial applications.