Texas Instruments TPS7A1018PYKAR

Overview

TPS7A1018PYKAR from Texas Instruments is a 300-mA, ultra-low-dropout linear regulator with dual-supply architecture (VIN + VBIAS), fixed 1.8-V output, 0.75-V minimum input voltage, 70-mV max dropout at 300 mA (YKA package), and ±1.5% output accuracy over –40°C to +125°C. It powers core rails in space-constrained, battery-operated devices such as smart watches and camera modules.

For engineers reviewing the TPS7A1018PYKAR datasheet, TPS7A1018PYKAR pinout, TPS7A1018PYKAR application, or TPS7A1018PYKAR equivalent, key selection criteria include ultra-low VIN capability (down to 0.75 V), bias-rail efficiency optimization (VBIAS = 1.7–5.5 V), active output discharge (P-version), and DSBGA-5 (YKA) package compatibility with sub-1-mm² layouts.

Technical Context

The TPS7A1018PYKAR implements a dual-input LDO architecture where VIN supplies the pass element while VBIAS powers internal control circuitry-enabling stable regulation even when VIN is only 70 mV above VOUT. This decoupling allows operation below bandgap voltage thresholds and supports LILO (low-input, low-output) systems.

It integrates global UVLO with independent rising/falling thresholds on both VIN (675 mV / 600 mV) and VBIAS (1.54 V / 1.44 V), thermal shutdown at 160°C, and monotonic soft-start (525–1200 µs). The P-version includes an active pulldown resistor (120 Ω) for controlled output discharge during disable or fault.

Key Specifications

Pinout & Package

TPS7A1018PYKAR is packaged in a 0.74-mm × 1.09-mm, 0.35-mm pitch, 5-pin DSBGA (YKA) package optimized for ultra-compact portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A1018PYKAR, TPS7A1118PYKAR eliminates VBIAS dependency but sacrifices ultra-low-VIN capability, while NCP163AMX180TBG offers smaller footprint and lower cost at the expense of dropout performance and advanced features like active discharge.

Availability

TPS7A1018PYKAR is available at Aetrix Electronics and suitable for smart wearables, camera modules, and portable medical devices requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS7A1018PYKAR 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, embedded processing, and connectivity technologies with leadership in power management innovation.

The TPS7A10 family was designed specifically for ultra-portable, battery-powered applications demanding ultra-low input voltage, ultra-low dropout, and nanoscale packaging-targeting next-generation wearables and miniature IoT endpoints.

FAQ

What is the minimum input voltage required for TPS7A1018PYKAR to regulate 1.8 V?

The TPS7A1018PYKAR supports a minimum input voltage (VIN) of 0.75 V, enabled by its dual-supply architecture: VIN supplies the pass element while VBIAS (≥1.7 V) powers internal circuitry. At 300 mA load, dropout is ≤70 mV in the YKA package, so VIN must be ≥1.87 V for full regulation-but the device remains functional and controllable down to 0.75 V, entering dropout only when VIN falls below VOUT + VDO.

Does TPS7A1018PYKAR require an external capacitor on the BIAS pin?

Yes, TPS7A1018PYKAR requires a minimum 0.1-µF ceramic capacitor between the BIAS pin and GND. This capacitor stabilizes the internal bias rail, improves PSRR, and ensures reliable startup and transient response. TI recommends X5R or X7R dielectrics placed as close as possible to the BIAS pin.

Is active output discharge supported on TPS7A1018PYKAR?

Yes, TPS7A1018PYKAR includes active output discharge as part of the "P" version designation (indicated by "P" in the suffix). When disabled via EN or during thermal shutdown, an internal 120-Ω pulldown resistor connects OUT to GND, ensuring rapid, controlled discharge of output capacitance-critical for safe reset sequencing in medical and safety-critical systems.

What is the accuracy specification of TPS7A1018PYKAR over temperature?

TPS7A1018PYKAR guarantees ±1.5% output voltage accuracy over the full operating junction temperature range of –40°C to +125°C, including all variations due to load (0–300 mA), line (VIN = VOUT + 0.5 V to 3.3 V), and VBIAS (VOUT + 1.4 V to 5.5 V). This is confirmed in Section 6.5 of the SBVS314B datasheet.

Can TPS7A1018PYKAR operate without connecting the EN pin?

Yes, TPS7A1018PYKAR can operate with EN unconnected only if it is tied directly to VIN or VBIAS. TI specifies that EN must be driven to logic high (≥0.9 V) to enable; leaving it floating is not allowed. If EN functionality is unused, connecting it to VIN is acceptable provided VIN ≥ 0.9 V-otherwise, tie to VBIAS for guaranteed enablement.