TPS793475DBVR Equivalent & Substitute Parts

Part Overview

The TPS793475DBVR is a linear voltage regulator IC from Texas Instruments designed for positive fixed 4.75V output at 200mA in SOT-23-5 surface mount packaging. This device is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for applications requiring 4.75V regulated output with 200mA current capability.

Substiute Parts

TPS793475DBVR

Texas InstrumentsIn Stock: 5751TPS793475DBVR Datasheet

Current PartRFQ

TPS78401DBVR

Texas InstrumentsIn Stock: 4921TPS78401DBVR Datasheet

MFR RecommendedRFQ

LDK120M-R

STMicroelectronicsIn Stock: 16937LDK120M-R Datasheet

MFR RecommendedRFQ

MIC5305-4.75YD5-TR

Microchip TechnologyIn Stock: 1066MIC5305-4.75YD5-TR Datasheet

MFR RecommendedRFQ

RT9193-4GGB

Richtek USA Inc.In Stock: 1167RT9193-4GGB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS793475DBVR is determined by the following critical parameters:

Fixed Output Voltage: 4.75V output is the primary functional requirement. Substitute parts must provide this exact fixed output voltage or adjustable output capability that can be configured to 4.75V.

Current Rating: Minimum 200mA output current capability is required. Substitute parts with equal or higher current ratings are acceptable.

Package Compatibility: SOT-23-5 surface mount package is mandatory for PCB layout compatibility. All substitute parts must use SC-74A or SOT-753 equivalent packages.

Input Voltage Range: Maximum input voltage of 5.5V establishes the upper operating limit. Substitute parts must support this input range.

Voltage Dropout: Low dropout voltage ensures efficient regulation. The TPS793475DBVR specifies 0.13V @ 200mA; substitute parts with comparable or lower dropout are preferred.

Regulatory Compliance: ROHS3 compliance and REACH unaffected status are mandatory for equivalent parts.

Substitute parts are grouped into two categories: fixed output 4.75V regulators (direct functional equivalents) and adjustable output regulators capable of 4.75V configuration (functional alternatives).

Parameter Comparison

Engineering Selection Recommendations

Direct Fixed Output Equivalents (Recommended Primary Substitutes):

MIC5305-4.75YD5-TR and RT9193-4GGB are fixed 4.75V output regulators with active product status. Both maintain ROHS3 compliance and REACH unaffected certification. MIC5305-4.75YD5-TR provides 150mA output, which is below the original 200mA specification and requires design verification for current margin. RT9193-4GGB provides 300mA output, exceeding the original specification and offering superior current headroom. RT9193-4GGB features lower quiescent current (130 µA vs. 220 µA) and improved dropout voltage (0.3V vs. 0.13V), making it suitable for applications with relaxed dropout requirements.

Adjustable Output Alternatives (Secondary Substitutes):

TPS78401DBVR and LDK120M-R are adjustable output regulators capable of 4.75V configuration through external resistor networks. TPS78401DBVR offers 300mA output and significantly lower quiescent current (35 µA), beneficial for battery-powered applications. LDK120M-R provides 200mA output matching the original specification and maintains the same input voltage maximum (5.5V). Both adjustable regulators require additional external components for output voltage configuration and introduce design complexity compared to fixed output alternatives.

All substitute parts maintain SOT-23-5 package compatibility, enabling direct PCB layout substitution without redesign. Product status transition from Last Time Buy to Active ensures long-term supply availability for all recommended substitutes.

Frequently Asked Questions (FAQ)

Q: Can MIC5305-4.75YD5-TR replace TPS793475DBVR directly?

A: MIC5305-4.75YD5-TR is pin-compatible and provides the same 4.75V fixed output in SOT-23-5 packaging. However, its 150mA output rating is 25% below the original 200mA specification. Direct substitution is acceptable only if the application current requirement does not exceed 150mA. Higher current applications require RT9193-4GGB or adjustable alternatives.

Q: What is the advantage of adjustable output regulators like TPS78401DBVR?

A: Adjustable regulators provide output voltage flexibility through external resistor configuration. TPS78401DBVR offers superior quiescent current performance (35 µA vs. 220 µA), reducing standby power consumption. This advantage is offset by increased component count and design complexity. Adjustable regulators are preferred for applications requiring multiple output voltages or optimized power efficiency.

Q: Are all substitute parts compatible with the original PCB layout?

A: All substitute parts use SC-74A or SOT-753 package variants, which are mechanically and electrically compatible with SOT-23-5 footprints. Pin assignments are identical across all listed substitutes. PCB layout substitution requires no modifications. However, external component requirements differ for adjustable output regulators, necessitating circuit design changes.

Q: What is the impact of dropout voltage differences?

A: TPS793475DBVR specifies 0.13V dropout at 200mA, the lowest among all substitutes. RT9193-4GGB and TPS78401DBVR specify 0.3V dropout, requiring 0.17V additional headroom. Applications with input voltage margins below 0.3V may experience regulation failure with these substitutes. Verify input voltage stability and minimum operating margins before selection.

Q: Why is operating temperature range different between substitutes?

A: TPS793475DBVR supports -40°C to 150°C, while all active substitutes support -40°C to 125°C. Applications requiring operation above 125°C cannot use substitute parts. For standard industrial temperature ranges (-40°C to 125°C), all substitutes are fully compatible.

Q: Which substitute offers the best overall performance match?

A: RT9193-4GGB provides the closest functional match: fixed 4.75V output, 300mA current (exceeding original specification), SOT-23-5 package, and active product status. It requires no external components and maintains design simplicity. LDK120M-R matches the original 200mA current specification exactly and maintains identical input voltage range, making it suitable for current-critical applications.