Texas Instruments TLV70015DCKT

Overview

TLV70015DCKT from Texas Instruments is a 200-mA, low-quiescent-current, low-dropout linear regulator with fixed 1.5-V output, designed for power-sensitive portable applications. It delivers 2% output accuracy, 43-mV dropout at 50 mA, 31-μA quiescent current, and 68-dB PSRR at 1 kHz - enabling stable power delivery in battery-operated wireless handsets and Bluetooth devices.

For engineers reviewing the TLV70015DCKT datasheet, TLV70015DCKT pinout, TLV70015DCKT application, or TLV70015DCKT equivalent, key selection considerations include dropout performance under light-to-moderate load, thermal shutdown behavior at 160°C, SC-70 package footprint constraints, and compatibility with 0.1-μF ceramic output capacitors.

Technical Context

The TLV70015DCKT uses a PMOS pass transistor architecture to achieve ultra-low dropout voltage that scales with load current (e.g., 43 mV at 50 mA, 175 mV at 200 mA). Its precision bandgap reference and error amplifier maintain ±2% DC accuracy across –40°C to +125°C junction temperature.

It integrates active-high enable logic (EN > 0.9 V for on), undervoltage lockout (UVLO at 1.9 V), thermal shutdown (trip at 160°C, reset at 140°C), and foldback current limiting (typ. 220 mA). Stability is guaranteed with ≥0.1-μF effective output capacitance, supporting compact X5R/X7R ceramics.

Key Specifications

Pinout & Package

TLV70015DCKT is housed in a 5-pin SC-70 package (2.00 mm × 1.25 mm body size) with exposed pad for thermal enhancement. Pin 1 = IN, Pin 2 = GND, Pin 3 = EN, Pin 4 = NC, Pin 5 = OUT.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV70015DCKT, TLC70015DBVR offers higher PSRR in a larger SOT-23 package, while TPS7A0515PDBVR provides lower IQ and smaller solution size but reduced current capacity - making TLV70015DCKT the balanced choice for 200-mA, SC-70-constrained portable designs.

Availability

TLV70015DCKT is available at Aetrix Electronics and suitable for wireless handsets, Bluetooth® devices, and Li-ion operated handheld products requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TLV70015DCKT 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 and precision analog solutions.

The TLV700 series was designed specifically for portable, battery-powered equipment - emphasizing ultra-low IQ, minimal dropout, and robust transient response to extend runtime and ensure reliability in space- and power-constrained handheld applications.

FAQ

What is the minimum input voltage required for TLV70015DCKT to regulate 1.5 V at 200 mA?

The TLV70015DCKT requires VIN ≥ VOUT + VDO = 1.5 V + 175 mV = 1.675 V to maintain regulation at 200 mA. Per datasheet Section 6.5, this dropout value is specified at TJ = 25°C with VOUT = 2.35 V minimum; for 1.5-V output, actual VDO is slightly lower but conservatively bounded by 175 mV. Operation below 1.675 V enters dropout mode, where output tracks input minus VDO.

Can TLV70015DCKT operate without an input capacitor?

Yes, TLV70015DCKT does not require an input capacitor for stability, but TI strongly recommends a 0.1–1 μF low-ESR ceramic capacitor from IN to GND. This improves transient response, reduces input ripple coupling, and prevents voltage excursions during load steps - especially when source impedance exceeds 2 Ω or the device is remote from the power source.

Is the NC pin on TLV70015DCKT electrically connected internally?

No, the NC pin (Pin 4) on TLV70015DCKT has no internal connection. As confirmed in the Pin Functions table (Section 5), it is designated "No connection" and may be left floating or tied to GND solely to enhance thermal dissipation - it carries no signal or power function and must not be used for routing or biasing.

What is the thermal shutdown behavior of TLV70015DCKT under sustained overload?

TLV70015DCKT triggers thermal shutdown at approximately 160°C junction temperature and resets at ~140°C. Under sustained overload, it cycles between shutdown and regulation - dissipating (VIN – VOUT) × ICL until cooled. This hysteresis protects against permanent damage but indicates inadequate heatsinking or excessive power dissipation; design should limit TJ to ≤125°C under worst-case conditions.

Does TLV70015DCKT support reverse-voltage protection at the output pin?

No, TLV70015DCKT does not include reverse-voltage protection. Its PMOS pass transistor contains a body diode that conducts unidirectionally from OUT to IN when VOUT > VIN. During reverse-bias conditions, current is not limited - TI recommends external current limiting (≤5% of rated output current) if extended reverse voltage operation is possible in the system.