Texas Instruments TPS7A0530PDQNR

Overview

TPS7A0530PDQNR from Texas Instruments is a 1-µA ultralow IQ, 200-mA low-dropout regulator in a 1.0-mm × 1.0-mm X2SON-4 package, delivering 3.0 V fixed output with ±3% accuracy over –40°C to +125°C, 235 mV max dropout at 200 mA, and active output discharge - designed for battery-powered wearable electronics and always-on subsystems.

For engineers reviewing the TPS7A0530PDQNR datasheet, TPS7A0530PDQNR pinout, TPS7A0530PDQNR application, or TPS7A0530PDQNR equivalent, key selection criteria include quiescent current (1 µA typ), dropout voltage at full load, thermal performance in X2SON-4, stability with 0.47-µF output capacitor, and enable logic compatibility (VEN(HI) = 0.9 V).

Technical Context

The TPS7A0530PDQNR employs a PMOS pass transistor architecture enabling ultralow IQ and fast transient response without requiring external compensation. Its internal foldback current limit and thermal shutdown (160°C trip) provide robust protection under overload or fault conditions.

It integrates an active pulldown circuit for rapid output discharge when disabled and supports operation from 1.4 V to 5.5 V input, making it compatible with single-cell Li-ion, Li-SOCl₂, Li-MnO₂, and two/three-cell alkaline batteries.

Key Specifications

Pinout & Package

TPS7A0530PDQNR is packaged in a 1.0-mm × 1.0-mm, 4-pin X2SON (DQN) package with wettable flanks, optimized for automated optical inspection and high-density layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0530PDBVR and MCP1700T-3002E/MB, the TPS7A0530PDQNR delivers superior thermal performance in minimal area, guaranteed 1-µA IQ across temperature, and integrated enable + discharge - critical for next-gen battery-constrained edge devices.

Availability

TPS7A0530PDQNR is available at Aetrix Electronics and suitable for wearable electronics, industrial wireless nodes, and portable medical diagnostics requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS7A0530PDQNR 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for battery-operated and industrial systems.

The TPS7A05 family was engineered to address ultralow-power, space-constrained applications - delivering nanoscale IQ, sub-millimeter packaging, and robust protection features for next-generation portable and IoT devices.

FAQ

What is the maximum output current capability of the TPS7A0530PDQNR?

The TPS7A0530PDQNR is rated for up to 200 mA continuous output current. Its foldback current limit activates at approximately 210–700 mA depending on conditions, and short-circuit current is limited to 65–150 mA. Thermal derating applies above ambient temperatures where junction temperature exceeds 125°C - the X2SON-4 package's R_θJA of 144.1°C/W must be considered in layout design.

Does the TPS7A0530PDQNR require an external pull-up resistor on the EN pin?

No, the TPS7A0530PDQNR does not require an external pull-up on EN. When enable functionality is unused, the EN pin must be directly connected to IN. The device draws only 10 nA at VIN = 5.5 V, so tying EN to IN adds negligible load. External pull-ups are unnecessary and may interfere with proper logic-level detection.

Can the TPS7A0530PDQNR operate from a 1.5-V alkaline battery?

Yes, the TPS7A0530PDQNR supports input voltages as low as 1.4 V, making it compatible with fresh 1.5-V alkaline cells. However, at 3.0-V output, the minimum input for regulation is V_OUT + V_DO ≈ 3.235 V at full load - so it operates in dropout below that point. For full regulation, use with ≥2-cell alkaline (3.0 V nominal) or Li-primary chemistries.

Is the TPS7A0530PDQNR stable with a 0.22-µF output capacitor?

No - the TPS7A0530PDQNR requires a minimum 0.47-µF ceramic output capacitor for guaranteed stability across all operating conditions. Using 0.22 µF may cause oscillation or degraded transient response. TI's datasheet specifies 0.47 µF as the absolute minimum; 1 µF is recommended for optimal performance.

What is the purpose of the active pulldown resistor in the TPS7A0530PDQNR?

The active pulldown resistor (~120 Ω) in the TPS7A0530PDQNR rapidly discharges the output capacitor when the device is disabled (EN low), bringing V_OUT to near 0 V within milliseconds. This prevents floating outputs, avoids unintended wake-up of downstream circuitry, and ensures predictable power-down behavior in systems with strict sequencing requirements.