CS8141YDPSR7 Equivalent & Substitute Parts

Part Overview

The CS8141YDPSR7 is a linear voltage regulator IC manufactured by onsemi, designed for positive fixed 5V output at 500mA in a D2PAK-7 surface mount package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The regulator features integrated enable and reset control functions with over-temperature and short-circuit protection, suitable for applications requiring stable 5V regulation from input sources up to 26V.

Substiute Parts

CS8141YDPSR7

onsemiIn Stock: 681CS8141YDPSR7 Datasheet

Current PartRFQ

LM9070SX/NOPB

National SemiconductorIn Stock: 2177LM9070SX/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS8141YDPSR7 is determined by the following critical parameters:

• Fixed 5V output voltage requirement
• Positive output configuration
• Surface mount D2PAK-7 package compatibility
• Maximum input voltage rating of 26V or greater
• Operating temperature range of -40°C to 125°C
• Enable and reset control functionality

The LM9070SX/NOPB qualifies as a functional equivalent based on matching output voltage, output configuration, package type, input voltage rating, and operating temperature range. However, the output current capability differs: the LM9070SX/NOPB provides 250mA maximum output current compared to the CS8141YDPSR7's 500mA specification. This reduction in current capacity represents the primary design consideration for substitution suitability.

Parameter Comparison

Engineering Selection Recommendations

The LM9070SX/NOPB is available as an active product from National Semiconductor, providing continuity for applications previously using the obsolete CS8141YDPSR7. The substitute maintains electrical compatibility for output voltage, input voltage range, and package footprint. The LM9070SX/NOPB includes additional protection features (over-voltage and reverse-polarity protection) not present in the original device.

Selection of the LM9070SX/NOPB requires verification that the application's maximum output current requirement does not exceed 250mA. Applications demanding the full 500mA output current of the CS8141YDPSR7 cannot use this substitute without circuit redesign. The LM9070SX/NOPB exhibits superior dropout voltage performance (0.8V versus 1.5V), which may provide thermal and efficiency benefits in power-limited applications.

Frequently Asked Questions (FAQ)

Q: Can the LM9070SX/NOPB directly replace the CS8141YDPSR7 in all applications?

A: Direct replacement is possible only for applications where the maximum output current requirement does not exceed 250mA. The LM9070SX/NOPB is rated for 250mA maximum output current, while the CS8141YDPSR7 supports 500mA. Both devices share identical D2PAK-7 package pinouts and 5V fixed output voltage specifications.

Q: What are the key differences between these two regulators?

A: The primary differences are output current capacity (500mA versus 250mA), dropout voltage (1.5V versus 0.8V), PSRR performance (75dB versus 60dB), and protection features. The LM9070SX/NOPB includes over-voltage and reverse-polarity protection not present in the CS8141YDPSR7. The LM9070SX/NOPB is an active product while the CS8141YDPSR7 is obsolete.

Q: Are the packages physically compatible?

A: Yes. Both devices use the TO-263-8 D2PAK (7 Leads + Tab) surface mount package, enabling direct PCB footprint compatibility without layout modifications.

Q: What input voltage range is supported by both regulators?

A: Both the CS8141YDPSR7 and LM9070SX/NOPB support maximum input voltages of 26V, with identical operating temperature ranges of -40°C to 125°C.

Q: Does the LM9070SX/NOPB include reset functionality like the original part?

A: The LM9070SX/NOPB includes enable control but does not feature the reset function present in the CS8141YDPSR7. Applications requiring reset functionality must implement external reset circuitry or select an alternative regulator with integrated reset capability.