Texas Instruments TPS7A1010PYKAR

Overview

TPS7A1010PYKAR from Texas Instruments is a 300-mA ultra-low-dropout linear regulator (LDO) with dual-rail operation (VIN and VBIAS), fixed 1.0-V output, 0.75-V minimum input voltage, 70-mV maximum dropout at 300 mA (YKA package), and ±1.5% output accuracy over –40°C to +125°C. It powers low-voltage cores in space-constrained wearable devices such as smart watches and wireless earbuds.

For engineers reviewing the TPS7A1010PYKAR datasheet, TPS7A1010PYKAR pinout, TPS7A1010PYKAR application, or TPS7A1010PYKAR equivalent, key selection considerations include its dual-supply architecture (VIN + VBIAS), sub-1-V input capability, active output discharge (P-version), ultra-small 0.74-mm × 1.09-mm DSBGA-5 package, and 1.6-µA VIN quiescent current - critical for battery life in always-on portable systems.

Technical Context

The TPS7A1010PYKAR implements a dual-rail LDO architecture where VIN supplies the pass element while VBIAS powers internal control circuitry, enabling stable regulation down to 0.5 V output from inputs as low as 0.75 V. Its global UVLO requires both VIN > 675 mV (rising) and VBIAS > 1.54 V (rising) to enable operation.

It features built-in monotonic soft-start, active output discharge via internal 120-Ω pulldown (P-version only), and high PSRR (60 dB @ 1 kHz) achieved through high-loop-gain error amplifier design and optimized internal compensation - all without requiring external compensation components.

Key Specifications

Pinout & Package

TPS7A1010PYKAR uses the 5-pin DSBGA (YKA) package: 0.74 mm × 1.09 mm, 0.35-mm pitch, bottom-side solder balls. Package is moisture-sensitive level 1 (MSL-1), compatible with standard reflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-dropout LDO applications.

Compared with TPS7A1010PYKAR, the TPS7A1012PYKAR offers identical performance at 1.2 V but cannot replace it in 1.0-V systems, while the TPS7A0510PDQNR trades ultra-low dropout and dual-rail flexibility for lower cost and simpler supply routing - making it viable only when input voltage margin exceeds 250 mV.

Availability

TPS7A1010PYKAR is available at Aetrix Electronics and suitable for smart wearables, wireless audio, medical sensors, and ultra-portable imaging applications requiring stable component supply, long-term lifecycle support, and MSL-1 packaging for high-yield SMT assembly.

Supply support for TPS7A1010PYKAR 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 portable and industrial applications.

The TPS7A10 product line delivers ultra-low-input, ultra-low-dropout LDOs optimized for battery-powered wearables and IoT edge nodes - emphasizing sub-1-V operation, nanoamp quiescent current, and wafer-level chip-scale packaging.

FAQ

What is the minimum input voltage required for TPS7A1010PYKAR to regulate 1.0 V?

The TPS7A1010PYKAR requires VIN ≥ 0.75 V minimum, but stable regulation at 1.0 V output demands VIN ≥ VOUT + VDO. With 70-mV max dropout at 300 mA, the practical minimum is 1.07 V. Below that, output collapses or enters dropout - verified per Electrical Characteristics Table 6.5 in SBVS314B Rev B.

Does TPS7A1010PYKAR require an external bias supply, and what happens if VBIAS is omitted?

Yes - TPS7A1010PYKAR requires VBIAS (1.7–5.5 V) to power internal circuitry. If VBIAS is unconnected or below 1.46 V, the global UVLO disables regulation regardless of VIN level. The device will not turn on, and OUT remains unregulated - confirmed by Figure 38 (Global UVLO circuit) and Section 7.3.2.

Is TPS7A1010PYKAR pin-compatible with other TPS7A10 variants like TPS7A1012PYKAR?

Yes - TPS7A1010PYKAR and TPS7A1012PYKAR share identical YKA (DSBGA-5) package, pinout, and electrical interface. Only the output voltage differs (1.0 V vs 1.2 V). No PCB changes are needed for substitution, but downstream logic must tolerate the voltage difference.

What is the purpose of the active discharge feature in TPS7A1010PYKAR?

The active discharge circuit (enabled in P-version devices like TPS7A1010PYKAR) pulls OUT to GND via a 120-Ω internal resistor when EN is low or thermal shutdown occurs. This ensures rapid, controlled discharge of output capacitance - critical for reliable power sequencing in multi-rail systems. Verified in Section 7.3.3 and Pin Functions table.

Can TPS7A1010PYKAR operate with COUT = 1 µF, or is 2.2 µF mandatory?

2.2 µF is the minimum recommended COUT per Section 6.3 (Recommended Operating Conditions). Using 1 µF risks instability and degraded transient response - confirmed by stability analysis in Section 8.1 and Figure 22's startup waveform dependency on COUT value. TI specifies ≥2.2 µF X5R/X7R ceramic for guaranteed performance.