Texas Instruments TPS75005RGWT

Overview

TPS75005RGWT from Texas Instruments is a dual-LDO power management IC optimized for C2000™ real-time microcontrollers (F2833x, F2823x, F281x, F280x), delivering 500 mA at 1.8 V/1.9 V (VSET-selectable) and 500 mA at 3.3 V with ±5% output accuracy, dedicated SVS supervision per rail, and integrated sequencing logic. It supports transient-heavy MCU operation using two 10-µF ceramic output capacitors.

For engineers reviewing the TPS75005RGWT datasheet, TPS75005RGWT pinout, TPS75005RGWT application, or TPS75005RGWT equivalent, this page provides verified specifications, QFN-20 package layout, sequencing behavior under EN/SEQ control, thermal performance data (θJA = 35.1°C/W), and validated alternatives for C2000 power-rail replacement designs.

Technical Context

The TPS75005RGWT integrates two independent low-dropout regulators with dedicated voltage supervisors (SVS1/SVS2) and a third monitor (SVS3 via VMON) - each with programmable delay (CT1/CT2) and soft-start (SS1/SS2). Its sequencer enforces strict power-up/down order based on SEQ pin logic, ensuring compliance with C2000 MCU boot requirements.

It uses internal reference-based SVS thresholds (1.782 V / 1.818 V for LDO1; 3.267 V / 3.333 V for LDO2; 1.206 V for VMON) with 0.3% hysteresis and open-drain PG/VDET outputs requiring external pull-ups. All supervision signals feed into a centralized logic block that gates EN-driven sequencing and thermal shutdown (165°C trip, 145°C release).

Key Specifications

Pinout & Package

TPS75005RGWT is housed in a 5-mm × 5-mm QFN-20 package (RGW) with an exposed thermal pad soldered to PCB ground for enhanced heat dissipation. Pin numbering follows top-view orientation with Pin 1 at bottom-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-LDO power management applications.

Compared with TPS7H3301-SP and TPS7A8300, the TPS75005RGWT uniquely combines dual 500-mA LDOs, per-rail ±5% SVS, hardware sequencing, and C2000-optimized timing - making it irreplaceable for cost-sensitive, space-constrained industrial MCU designs requiring guaranteed boot integrity.

Availability

TPS75005RGWT is available at Aetrix Electronics and suitable for industrial motor drives, PLC controllers, and automotive body electronics requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for TPS75005RGWT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in industrial and automotive electronics.

The TPS75005RGWT belongs to TI's C2000-specific power management product line, engineered to eliminate discrete power design complexity and ensure deterministic power sequencing for real-time microcontrollers in high-reliability applications.

FAQ

What is the function of the VSET pin on the TPS75005RGWT?

The VSET pin on the TPS75005RGWT selects the LDO1 output voltage: logic-low (≤0.8 V) configures 1.818 V for F280x/F281x MCUs, and logic-high (≥2.0 V) configures 1.919 V for F2833x/F2823x devices. This pin must be hard-wired to GND or IN - not dynamically toggled - as transition time is uncharacterized for runtime reconfiguration. The TPS75005RGWT datasheet specifies ±5% accuracy for both settings across –40°C to +125°C.

How does the TPS75005RGWT handle power sequencing for C2000 MCUs?

The TPS75005RGWT implements hardware-based sequencing controlled by the EN and SEQ pins: EN initiates the sequence, and SEQ determines order - logic-L powers LDO1 first then LDO2, while logic-H reverses it. Both power-up and power-down follow the same order. This eliminates software dependency and ensures repeatable timing critical for C2000 boot integrity. The TPS75005RGWT also incorporates soft-start (260 µs default) to limit inrush current during each stage.

Can the TPS75005RGWT monitor an external voltage rail?

Yes, the TPS75005RGWT monitors external rails via the VMON pin, which accepts a resistor divider to scale the target voltage down to its internal 1.206 V threshold. When the scaled voltage exceeds 1.206 V, the open-drain VDET pin pulls low; below threshold, VDET floats high (with external pull-up). This allows supervision of auxiliary supplies like 5-V bias rails or isolated DC-DC outputs - a feature confirmed in the TPS75005RGWT electrical characteristics table and functional block diagram.

What thermal performance can be expected from the TPS75005RGWT in a standard PCB layout?

In a JEDEC-standard high-K board with 4×4 thermal vias under the exposed pad, the TPS75005RGWT achieves θJA = 35.1°C/W. With 500-mA load on both LDOs at 6.5-V input, power dissipation reaches ~1.5 W, resulting in ~53°C junction rise above ambient - well within the 125°C max TJ rating. The TPS75005RGWT thermal metrics assume 1-oz internal and 2-oz bottom copper planes; reducing copper area increases θJA proportionally.

Is the TPS75005RGWT compatible with ceramic output capacitors?

Yes, the TPS75005RGWT is explicitly designed for stability with 10-µF X5R or X7R ceramic capacitors on both OUT1 and OUT2, as required by C2000 MCU transient specifications. The device's control loop compensates for low-ESR ceramics (≤1.0 Ω), eliminating need for series resistors or tantalum alternatives. The TPS75005RGWT datasheet confirms stability across –40°C to +125°C with these capacitors and specifies minimum 4.7-µF value for general use.