Texas Instruments TLV70509YFPR

Overview

TLV70509YFPR from Texas Instruments is a 200-mA, ultra-low-noise, low-quiescent-current LDO voltage regulator delivering 0.9 V output with 0.5% typical accuracy, 145 mV dropout at 200 mA, and 70 dB PSRR at 1 kHz - designed for power-sensitive RF and portable applications requiring stable low-voltage biasing.

For engineers reviewing the TLV70509YFPR datasheet, TLV70509YFPR pinout, TLV70509YFPR application, or TLV70509YFPR equivalent, key selection criteria include its 35 μA quiescent current, 0.1 μF minimum stable output capacitance, DSBGA-4 (0.77 mm × 0.77 mm) package, enable-controlled shutdown, and thermal/overcurrent protection - all critical for battery-operated handheld and wireless systems.

Technical Context

The TLV70509YFPR uses a PMOS pass transistor architecture enabling low dropout (145 mV @ 200 mA) and high PSRR (70 dB @ 1 kHz), with internal bandgap reference and error amplifier ensuring ±0.5% DC output accuracy across –40°C to +125°C. Its UVLO circuit prevents regulation until VIN exceeds 1.9 V.

It features active-high EN control (0.9 V threshold), thermal shutdown (160°C trip), and current limiting (260–550 mA). Unlike the TLV705P variant, it lacks active pulldown - output discharge relies on external load or capacitor leakage.

Key Specifications

Pinout & Package

TLV70509YFPR is housed in a 0.77 mm × 0.77 mm, 0.15-mm max height DSBGA-4 (YFP) package - optimized for space-constrained mobile and wearable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F0TESK and TPS7A0509PDBVR, TLV70509YFPR offers the smallest footprint and lowest noise for space-constrained, battery-powered RF applications - but trades off higher dropout than TPS7A0509PDBVR and lacks automotive qualification versus TLS850F0TESK.

Availability

TLV70509YFPR is available at Aetrix Electronics and suitable for wireless sensor nodes, wearable health monitors, Zigbee® router modules, and Li-ion powered smart tags requiring stable component supply with minimal board space and ultra-low power consumption.

Supply support for TLV70509YFPR 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, embedded processing, and connectivity technologies - with decades of LDO design expertise for portable and industrial markets.

The TLV705 series was developed specifically for battery-powered handheld and wireless devices demanding ultra-low IQ, low noise, and miniature packaging - targeting next-generation wearables, IoT sensors, and RF subsystems.

FAQ

What is the output voltage tolerance of TLV70509YFPR over temperature and load?

The TLV70509YFPR delivers ±0.5% typical DC output accuracy across –40°C to +125°C junction temperature and 0–200 mA load range for VOUT ≥ 1 V. Since TLV70509YFPR is a 0.9 V device, its accuracy is specified as ±5 mV (±0.5% of 0.9 V = ±4.5 mV, rounded per datasheet). This is confirmed in Section 6.5 Electrical Characteristics of the SBVS151F datasheet under VO parameter for VOUT < 1 V.

Does TLV70509YFPR require an external pull-up resistor on the EN pin?

No, TLV70509YFPR does not require an external pull-up on EN. Its EN pin has no internal pull-up; however, the device operates correctly when EN is directly tied to VIN for always-on use. If controlled by a microcontroller GPIO, a pull-up is unnecessary - drive EN ≥ 0.9 V to enable and ≤ 0.4 V to disable. This behavior is documented in the Pin Functions table (Section 5) and Feature Description (Section 7.3.5).

Can TLV70509YFPR operate with a 1.8 V input supply?

No - TLV70509YFPR requires a minimum input voltage of 2.0 V per Recommended Operating Conditions (Section 6.3). At 0.9 V output and 145 mV dropout, the theoretical minimum VIN is 1.045 V, but the absolute minimum specified VIN is 2.0 V due to internal UVLO (1.9 V) and circuit functionality requirements. Operation below 2.0 V is outside recommended conditions and not guaranteed.

Is TLV70509YFPR pin-compatible with other TLV705 variants like TLV70512YFPR?

Yes - all TLV705xYFPR devices (including TLV70509YFPR and TLV70512YFPR) share identical YFP DSBGA-4 packaging, pinout (GND/A1, EN/A2, VIN/B2, VOUT/B1), and footprint. Only the fixed output voltage differs. This is confirmed in the Device Information table (page 1) and Pin Configuration (page 4) of the SBVS151F datasheet.

What is the maximum allowable output capacitance for TLV70509YFPR?

The TLV70509YFPR datasheet specifies stability with as little as 0.1 μF ceramic output capacitance and does not define a maximum value. Larger capacitors (e.g., 10 μF–100 μF) are permissible and commonly used to improve transient response - though start-up current scales linearly with COUT (per Equation 1 in Section 7.3.3), and very large values may trigger current-limit clamping during enable. No upper limit is specified in Absolute Maximum Ratings or Stability sections.