TPS73601MDBVREP 400mA EP LDO: Specs and Sourcing Guide

The TPS73601MDBVREP is an adjustable-output, 400 mA low-dropout linear regulator in a 5-pin SOT-23 package, qualified through Texas Instruments’ Enhanced Product flow for high-reliability applications. It is frequently specified for compact point-of-load rails in defense, aerospace, and industrial systems where low dropout, low noise, and stable operation with small ceramic capacitors are design requirements.

TPS73601MDBVREP: Function and EP Positioning

TPS73601MDBVREP combines an adjustable output range with a low typical dropout voltage and reverse-current protection. For design teams, the part reduces board complexity by providing a stable low-voltage rail without requiring a high-ESR tantalum output capacitor. In many designs, a single 1 µF ceramic output capacitor is sufficient for stable operation [1].

The device belongs to the TPS736xx family, but the EP suffix is the key differentiator. Enhanced Product devices are manufactured through a controlled baseline that supports extended temperature performance, change control, and long product life. That does not automatically make the part QML Class V, so the program’s qualification flow must be checked separately against MIL-PRF-38535 requirements [3].

Electrical and Package Specifications

The table below summarizes the primary electrical and mechanical specifications for TPS73601MDBVREP.

These values are typical datasheet-level information [1]. Programs that require worst-case minimum and maximum values over the full military temperature range should verify against the specific lot test data or request characterized data through the sourcing flow.

Enhanced Product Qualification and Compliance Context

The EP flow is useful for hi-rel systems because it adds rigor to a commercial-grade design without the full hermetic package cost of some QML alternatives. It includes controlled assembly materials, extended electrical characterization, and change notification. For aerospace and defense programs, procurement teams commonly use EP parts for power management on boards where a low-current, small-footprint rail is acceptable.

Compliance documentation for TPS73601MDBVREP should be reviewed before first build. Recommended documentation includes:

• Certificate of Conformance with the component’s date code and lot traceability.
• Texas Instruments Enhanced Product qualification summary or datasheet revision.
• Incoming inspection records aligned with SAE AS5553 counterfeit avoidance requirements [4].
• Manufacturer’s control documentation for the plastic package and assembly site.

One absolute rule applies: a plastic EP LDO is not a substitute for a QML-38535 Class V hermetic part when the program specification explicitly requires QML certification [3]. Design teams should confirm the required device class before finalizing the bill of materials.

Output Voltage Setting and Biasing

TPS73601MDBVREP is the adjustable version of the family, meaning the output voltage is set with an external resistor divider rather than a fixed internal output. The internal reference is nominally 1.204 V, and the output can be programmed from 1.20 V up to 5.5 V. In practice, the lowest usable output is limited by the reference voltage, while the maximum usable output is limited by the input voltage minus dropout.

For a 3.3 V rail, the divider should be selected to produce the target voltage without using unnecessarily large resistor values. Large feedback resistors can increase noise sensitivity, while very small resistors consume excess bias current. The datasheet provides the standard divider equation and guidance for divider current [1].

Stability and Output Capacitor Selection

TPS73601MDBVREP is designed to be stable with low-ESR ceramic capacitors. This is significant because many legacy LDO designs require an output capacitor with a minimum ESR range, often forcing a tantalum part. With the TPS736xx family, a small ceramic output capacitor is acceptable, which supports lower height, lower cost, and better reliability [1].

The recommended capacitance is typically from 1 µF upward. High-density digital loads may require additional bulk capacitance, but the LDO itself does not need the legacy ESR-based compensation. For long-duration defense programs, ceramic output capacitors also reduce parts count and simplify obsolescence planning.

Dropout, Thermal, and Current Limit

At 400 mA, the typical dropout voltage is 75 mV, so a 3.3 V rail can be maintained from a 3.4 V to 5.5 V input under normal conditions. Margin should be added for load transients, input tolerance, and temperature variation, especially at the −55°C and +125°C extremes.

Thermal design must respect the small SOT-23-5 package. A 400 mA load with a large input-output differential will dissipate significant power, so junction temperature should be calculated with the board thermal resistance and derating rules applied. The device includes thermal shutdown and current-limit protection, but these are fault features, not active regulation limits for normal operation [1].

Application Use: Powering FPGA, DSP, and Mixed-Signal Rails

TPS73601MDBVREP is often used as a clean auxiliary rail for FPGA banks, DSP cores, ADCs, DACs, and clocking circuits. Because the part provides low noise and stable ceramic-capacitor operation, it is a practical choice for analog supply pins and PLL power domains that must be isolated from switching-regulator ripple.

High-reliability FPGA systems frequently contain multiple low-voltage rails with different sequencing and filtering requirements. Actel/Microsemi devices such as the A54SX72A-CQ208B, A54SX72A-1CQ208B, A2F500M3G-FGG484I, M2S150TS-FCG1152I, and AX2000-FGG896M illustrate the range of logic, mixed-signal, and flash-based FPGA loads that share board-level power design rules with this LDO.

Before committing an LDO to any FPGA rail, the design team should verify the rail’s current requirement, tolerance, sequencing, and noise sensitivity. For larger FPGA core rails, a single 400 mA LDO is typically insufficient, so TPS73601MDBVREP is best placed on low-current auxiliary, analog, or reference rails.

For high-density FPGA designs with multiple sequenced core and transceiver rails, <XCKU085 UltraScale FPGA: Performance for Critical Systems> covers power architecture and rail requirements for defense processing applications.

For boards using larger Virtex-7 processing fabrics with aggressive core current demands, <Virtex-7 690T FPGA: Performance for Mission-Critical Systems> covers packaging, thermal, and supply considerations.

For hi-rel designs that mix logic and programmable analog resources on the same board, <A1020B-PG84B ACT2 FPGA: Specs, Sourcing, and Availability> covers traceable supply decisions for defense programs.

Sourcing, Inspection, and Documentation Requirements

Sourcing TPS73601MDBVREP for hi-rel use is not simply a price comparison. The more important checks are documentation consistency, date code control, and traceability back to the manufacturer or an authorized path. Procurement teams should request the following in a single package:

• Exact manufacturer part number and package suffix.
• Date code and lot code for each proposed shipment.
• C of C and any available test data.
• Shelf-life status and moisture sensitivity classification.
• Inspection method before shipment, including visual and dimensional checks where required.

For incoming inspection, the part should be checked for marking consistency, pin-1 orientation, and package condition. Solderability and decapsulation checks are not routine for every lot, but should be available if counterfeit risk is elevated. AS5553 provides a useful framework for planning those controls [4].

To reduce screening mismatches, consolidate the part number, desired date code, C of C, and any customer-source inspection requirement into one RFQ. Send that BOM line detail to xuansc2144@gmail.com with TPS73601MDBVREP RFQ in the subject. Direct inquiries that include the rail voltage, load current, required screening, and target delivery date typically produce a faster and more complete response.

Part Number Decoding and Variant Awareness

The TPS73601MDBVREP orderable part number can be read in segments. TPS73601 identifies the adjustable 400 mA base device. DBV indicates the 5-pin SOT-23 package. The R indicates tape-and-reel shipping. The trailing EP marks the Enhanced Product qualification flow [1].

Design teams should avoid substituting the standard commercial version without explicit engineering and qualification review. The standard TPS73601DBV may meet the electrical need in a lab environment but may not carry the same extended temperature characterization, change control, or documentation path. The EP suffix matters for program records even when the silicon function is similar.

Request a TPS73601MDBVREP Quote

For defense, aerospace, and high-reliability programs, send the full part number, required date code or lot traceability, C of C, and target delivery date to xuansc2144@gmail.com. Include the rail voltage, nominal load, and any requested incoming inspection or screening requirement. Sparkle Electronics supports sourcing discussions with documentation-first review and clear qualification expectations.

Frequently Asked Questions

What does the EP suffix mean in TPS73601MDBVREP?

The EP suffix identifies Texas Instruments’ Enhanced Product flow, which includes controlled manufacturing, extended temperature characterization, change notification, and longer product support. The device remains a plastic SOT-23 part unless the program specifically requires QML or hermetic construction [1][3].

Is the TPS73601MDBVREP QML qualified?

Not automatically. The TPS73601MDBVREP is an Enhanced Product component. Programs that require QML Class V or another specific qualification should verify that requirement against MIL-PRF-38535 and the manufacturer’s qualification summary before use [3].

What output voltage can I set?

The adjustable output can be programmed from 1.20 V to 5.5 V using an external resistor divider. The internal reference voltage is nominally 1.204 V [1].

What package is used?

The device uses a 5-pin SOT-23 package indicated by the DBV suffix. The R in the orderable part number indicates tape-and-reel shipping.

How do I verify authentic TPS73601MDBVREP parts?

Verify marking, lot/date code traceability, C of C, and supplier documentation. Incoming inspection should follow the program’s counterfeit avoidance plan aligned with SAE AS5553 practices [4].

References

[1] Texas Instruments, “TPS73601-EP 400-mA Low-Dropout Voltage Regulator with Reverse Current Protection,” data sheet. https://www.ti.com/lit/gpn/tps73601-ep

[2] Texas Instruments, “TPS73601 400-mA Low-Dropout Voltage Regulator With Reverse Current Protection,” data sheet. https://www.ti.com/lit/gpn/tps73601

[3] U.S. Department of Defense, MIL-PRF-38535, Integrated Circuits (Microcircuits) Manufacturing, General Specification.

[4] SAE International, AS5553, Counterfeit Electrical, Electronic, and Electromechanical Parts; Avoidance, Detection, Mitigation, and Disposition.

[5] Defense Federal Acquisition Regulation Supplement, DFARS 252.246-7007, Contractor Counterfeit Electronic Part Detection and Avoidance System.

If you’re interested, check out these related articles:

XC7VX485T Virtex-7 FPGA: Performance and Sourcing for Defense
XCKU115 UltraScale FPGA: Powering Critical Defense Systems

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