Texas Instruments TPS7A4433DGQR

Overview

TPS7A4433DGQR from Texas Instruments is a 50-mA, 65-V input, ultra-low-I_Q (5.5 µA) LDO linear voltage regulator with dual outputs: adjustable main output (1.24–14.5 V) and selectable mid-rail output (10/12/15 V), 1% accuracy over –40°C to +125°C, and integrated power-good flag - used in EV charging infrastructure, PLCs, and cordless power tools.

For engineers reviewing the TPS7A4433DGQR datasheet, TPS7A4433DGQR pinout, TPS7A4433DGQR application, or TPS7A4433DGQR equivalent, key selection criteria include its 65-V input tolerance, shared 50-mA current budget between OUT and MID_OUT, precision enable threshold (1.15–1.35 V), open-drain PG output, and HVSSOP-10 thermal performance (R_θJA = 53.7°C/W).

Technical Context

The TPS7A4433DGQR implements a high-voltage bipolar LDO architecture with independent feedback control loops for OUT and MID_OUT rails. Its precision enable input uses internal hysteresis (50 mV) and fixed thresholds to support robust power sequencing in multi-rail systems.

Power-good monitoring is tied to the FB pin voltage, providing accurate status indication at 88–96.5% of nominal V_OUT, while the MVSEL1/MVSEL2 pins configure MID_OUT via discrete logic levels (0 V or ≥0.9 V) - no external resistors required for mid-rail selection.

Key Specifications

Pinout & Package

TPS7A4433DGQR is packaged in a 10-pin HVSSOP (DGQ) with 3.00 mm × 3.00 mm body size and exposed thermal pad. The package supports R_θJA = 53.7°C/W and requires GND connection of the thermal pad for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output LDO regulator applications.

Compared with TPS7A4533DGQR and LT3015EDD#PBF, the TPS7A4433DGQR uniquely integrates both a precision power-good indicator and a selectable 10/12/15 V mid-rail output in a 65-V capable package - enabling compact, sequenced dual-rail power delivery without external components.

Availability

TPS7A4433DGQR is available at Aetrix Electronics and suitable for EV charging infrastructure, programmable logic controllers (PLCs), and cordless power tools requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across temperature extremes.

Supply support for TPS7A4433DGQR 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 and embedded processing technologies, with decades of expertise in high-reliability power management ICs.

The TPS7A44 product line delivers high-input-voltage LDOs with dual outputs and ultra-low quiescent current - designed specifically for industrial automation, energy infrastructure, and battery-powered equipment demanding robustness and efficiency.

FAQ

What is the maximum input voltage the TPS7A4433DGQR can withstand during transients?

The TPS7A4433DGQR withstands input transients up to 85 V for 200 ms, as specified in its Absolute Maximum Ratings. This capability allows direct connection to high-voltage industrial buses and battery systems without additional transient suppression circuitry - a key advantage in EV charging and motor control applications where the TPS7A4433DGQR operates reliably under harsh electrical conditions.

How is the MID_OUT voltage selected on the TPS7A4433DGQR?

The MID_OUT voltage on the TPS7A4433DGQR is selected using the MVSEL1 and MVSEL2 pins: 10 V (MVSEL1 = HIGH, MVSEL2 = LOW), 12 V (both HIGH), or 15 V (both LOW). These pins accept logic-level inputs (0 V or ≥0.9 V); unused pins must be tied to GND - floating is prohibited. This configuration is confirmed in Table 8-1 of the TPS7A4433DGQR datasheet and requires no external resistors.

Does the TPS7A4433DGQR support adjustable output voltage, and what is the reference voltage?

Yes, the TPS7A4433DGQR supports adjustable output voltage from 1.24 V to 14.5 V using the FB pin with an external resistor divider. Its internal feedback reference voltage is precisely 1.24 V (typical), with 1% accuracy maintained over –40°C to +125°C. This reference is explicitly defined in Section 6.5 Electrical Characteristics of the TPS7A4433DGQR datasheet.

What is the total current budget shared between OUT and MID_OUT on the TPS7A4433DGQR?

The TPS7A4433DGQR provides a total output current budget of 50 mA shared between the OUT and MID_OUT rails. For example, delivering 30 mA on MID_OUT limits OUT to 20 mA. This constraint is documented in the "Maximum output current" feature list and confirmed in Section 6.3 Recommended Operating Conditions, where I_OUT is defined as "0 to 50 – I_{MID_OUT} mA".

Can the TPS7A4433DGQR's EN pin be left floating, and what is its default state?

Yes, the EN pin of the TPS7A4433DGQR can be left floating because it features an internal pullup current source that drives the pin above the enable threshold (≥1.15 V), resulting in default-enabled operation. This behavior is explicitly stated in the Pin Functions table and allows simplified design in systems where unconditional startup is acceptable - a verified characteristic of the TPS7A4433DGQR.