Texas Instruments TPS7A4401DGQR

Overview

TPS7A4401DGQR 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/fixed main output (OUT) and selectable mid-rail output (MID_OUT at 10 V/12 V/15 V), 1% accuracy over –40°C to +125°C, and open-drain power-good (PG) monitoring - used in EV charging infrastructure and industrial field transmitters requiring high-voltage tolerance and low quiescent power.

For engineers reviewing the TPS7A4401DGQR datasheet, TPS7A4401DGQR pinout, TPS7A4401DGQR application, or TPS7A4401DGQR equivalent, key selection criteria include its 4–65 V input range, shared 50-mA current budget between OUT and MID_OUT, precision enable threshold (1.15–1.35 V), dropout voltage of 800 mV at 50 mA on OUT, and HVSSOP-10 thermal performance (R_θJA = 53.7°C/W).

Technical Context

The TPS7A4401DGQR integrates two independent regulation paths: one for the main OUT rail (feedback-controlled via FB pin for adjustable versions or internal divider for fixed), and another for the MID_OUT rail set by MVSEL1/MVSEL2 logic inputs. Its precision enable circuit uses an internal pullup and operates with 50-mV hysteresis, enabling robust power sequencing.

Power-good monitoring compares the FB voltage against 93% of V_OUT (rising) with 3% hysteresis, asserting PG low when V_OUT drops below threshold. Thermal shutdown activates at 170°C, and both rails feature independent current limiting (ICL(OUT) = 125 mA typ, ICL(MID_OUT) = 145 mA typ) and line/load regulation under ±0.1%.

Key Specifications

Pinout & Package

HVSSOP-10 (DGQ) package, 3.00 mm × 3.00 mm body, exposed thermal pad - optimized for high-voltage isolation and thermal dissipation in compact industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A4401DGQR, TPS7A4501DGQR offers higher current but forfeits integrated mid-rail generation, while LT3092EDD#PBF serves fundamentally different current-source applications and lacks all control features (PG, EN, MID_OUT) essential for system-level power management.

Availability

TPS7A4401DGQR is available at Aetrix Electronics and suitable for cordless power tools, EV charging infrastructure, and programmable logic controllers requiring stable component supply with extended lifecycle assurance and full traceability.

Supply support for TPS7A4401DGQR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The TPS7A44 product line targets high-input-voltage industrial systems needing dual-rail LDOs with ultra-low quiescent current, precise enable thresholds, and robust transient immunity - specifically designed for battery-powered and mains-connected equipment operating from 4 V to 65 V.

FAQ

What is the maximum input voltage rating for the TPS7A4401DGQR, and how long can it withstand overvoltage conditions?

The TPS7A4401DGQR has an absolute maximum input voltage of 85 V and is rated to withstand 85 V transients for up to 200 ms without damage. This capability supports compliance with ISO 7637-2 Pulse 5a in automotive-derived EV charging applications and protects against load-dump events in industrial power tools. Continuous operation must remain within the recommended 4–65 V range.

How does the TPS7A4401DGQR allocate its 50-mA total output current between OUT and MID_OUT rails?

The TPS7A4401DGQR shares a total of 50 mA between its OUT and MID_OUT outputs - the sum of I_OUT and I_{MID_OUT} must not exceed 50 mA. For example, drawing 30 mA from MID_OUT limits OUT to 20 mA. This constraint is enforced by internal current limiting and is specified in the Recommended Operating Conditions table of the TPS7A4401DGQR datasheet.

Can the TPS7A4401DGQR's MID_OUT voltage be adjusted beyond the three factory-set values (10 V, 12 V, 15 V)?

No - the TPS7A4401DGQR's MID_OUT voltage is fixed to only three discrete values (10 V, 12 V, or 15 V) selected by the logic states of MVSEL1 and MVSEL2 pins. It does not support analog or resistor-based adjustment. The device uses internal trimming to achieve ±0.6 V accuracy at 15 V and ±0.5 V at 12 V, as verified in the Electrical Characteristics table of the TPS7A4401DGQR datasheet.

What is the purpose of the NC (no-connect) pin on the TPS7A4401DGQR HVSSOP-10 package, and how should it be handled?

The NC pin (pin 9 in adjustable version, pin 2 in fixed version) has no internal connection and is included to maintain high-voltage clearance between IN and MID_OUT terminals. It must be left floating - connecting it to GND or any other net compromises creepage/clearance and risks breakdown under 65 V operation. This requirement is explicitly stated in the Pin Functions table of the TPS7A4401DGQR datasheet.

Does the TPS7A4401DGQR provide reverse-polarity or reverse-current protection?

No - the TPS7A4401DGQR does not integrate reverse-polarity or reverse-current protection. It requires external diode or MOSFET-based protection if the application risks input reversal (e.g., hot-swap connectors or battery insertion errors). The device's absolute maximum ratings specify only –0.3 V minimum input voltage, confirming no inherent reverse-blocking capability.