Texas Instruments TPS70615DRVT

Overview

TPS70615DRVT from Texas Instruments is a fixed-output 1.5-V, 150-mA ultralow-quiescent-current LDO voltage regulator in a 6-pin WSON package. It delivers 2% output accuracy over –40°C to +125°C, features 1-µA typical quiescent current, reverse current protection, and 245-mV dropout at 50 mA - enabling long battery life in always-on portable systems such as wearable sensors and medical telemetry modules.

For engineers reviewing the TPS70615DRVT datasheet, TPS70615DRVT pinout, TPS70615DRVT application, or TPS70615DRVT equivalent, this page provides verified functional mode behavior, thermal shutdown thresholds, EN pin logic levels, ground current vs. load/temperature curves, and validated capacitor stability requirements for production-grade low-power rail design.

Technical Context

The TPS70615DRVT uses a PMOS pass transistor architecture with integrated reverse current protection active regardless of EN state, limiting reverse leakage to 10 nA when V_OUT > V_IN. Its undervoltage lockout (UVLO) ensures output remains off until internal circuitry stabilizes.

Functional modes include normal regulation (VIN ≥ V_OUT + V_DO, EN > 0.9 V), dropout operation (VIN < V_OUT + V_DO but > 2.7 V), and disabled state (EN < 0.4 V or TJ > 158°C). Thermal shutdown triggers at 158°C and resets at 140°C, with current limit beginning at ≥200 mA.

Key Specifications

Pinout & Package

TPS70615DRVT is housed in a thermally enhanced 2.0 mm × 2.0 mm WSON-6 package with an exposed thermal pad electrically connected to GND. The pad must be soldered to a dedicated GND plane for optimal thermal performance (R_θJB = 42.6°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS70615DBVR, the TPS70615DRVT offers 3.3× lower thermal resistance and smaller footprint; compared with MCP1700T-1502E/TT, it adds EN control, reverse current blocking, and guaranteed 2% accuracy across full temperature range - essential for certified medical and industrial deployments.

Availability

TPS70615DRVT is available at Aetrix Electronics and suitable for wearable health monitors, implantable telemetry systems, smart sensor nodes, and industrial wireless transmitters requiring stable component supply with full traceability and lifecycle continuity.

Supply support for TPS70615DRVT 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 power management ICs for mission-critical applications.

The TPS706 series was designed specifically for ultralow-power, always-on battery-operated systems demanding nanoscale quiescent current, robust reverse protection, and guaranteed accuracy across extended temperature ranges - targeting medical, industrial, and consumer IoT markets.

FAQ

What is the maximum input voltage rating for the TPS70615DRVT?

The TPS70615DRVT has an absolute maximum input voltage (VIN) of 7 V, but its recommended operating range is 2.7 V to 6.5 V. Exceeding 7 V risks permanent damage. For reliable long-term operation, maintain VIN ≤ 6.5 V and ensure transient spikes are clamped below 7 V using external protection circuits if necessary. The TPS70615DRVT's internal UVLO and thermal shutdown provide secondary safeguards but do not replace proper input voltage conditioning.

Does the TPS70615DRVT require an input capacitor for stability?

The TPS70615DRVT does not require an input capacitor for stability, but Texas Instruments strongly recommends a 1-µF X7R ceramic capacitor placed directly between IN and GND. This capacitor improves PSRR, suppresses high-frequency noise from upstream sources, and enhances transient response during load steps. Without it, the TPS70615DRVT remains stable but may exhibit degraded line rejection and increased susceptibility to input ripple - especially when fed from switching regulators or noisy battery paths.

Can the TPS70615DRVT be used with output capacitance below 2.2 µF?

For the TPS70615DRVT's 1.5-V output, the minimum stable output capacitance is 2.0 µF (effective value after accounting for DC bias, temperature, and tolerance derating). Using a 2.2-µF X7R ceramic capacitor meets this requirement with margin. Capacitances below 2.0 µF risk instability, leading to oscillation or excessive overshoot during load transients. Do not substitute with lower-value or higher-ESR types (e.g., tantalum or aluminum electrolytic) unless validated per TI's application note SLVA722.

How does reverse current protection function in the TPS70615DRVT?

The TPS70615DRVT integrates active reverse current protection that blocks conduction from OUT to IN whenever V_OUT > V_IN, limiting leakage to 10 nA typical. This feature operates independently of the EN pin state and remains active across the full temperature range. It prevents battery drain in multi-supply systems (e.g., when a charged backup rail back-feeds into a depleted main rail) and eliminates need for external blocking diodes - preserving efficiency and board space in the TPS70615DRVT design.

What is the startup time specification for the TPS70615DRVT?

The TPS70615DRVT has a typical startup time of 200–600 µs from EN assertion to 95% of 1.5-V nominal output (V_OUT(nom)) under 47-Ω load, as specified for V_OUT ≤ 3.3 V. This timing is measured with C_IN = C_OUT = 2.2 µF ceramic capacitors and applies across –40°C to +125°C. Startup time increases slightly at temperature extremes and with heavier loads, but remains within datasheet limits for all recommended operating conditions of the TPS70615DRVT.