Texas Instruments TLV70518YFMR

Overview

TLV70518YFMR from Texas Instruments is a 1.8-V fixed-output, 200-mA low-dropout (LDO) linear regulator in a 4-pin PicoStar™ package (0.77 mm × 0.77 mm, 0.15-mm max height). It delivers 0.5% typical output accuracy, 35 μA quiescent current, and 145 mV dropout at 200 mA - optimized for Li-ion–powered handheld devices requiring ultra-low profile and high PSRR.

For engineers reviewing the TLV70518YFMR datasheet, TLV70518YFMR pinout, TLV70518YFMR application, or TLV70518YFMR equivalent, key selection criteria include its 1.8-V fixed output, 2 V to 5.5 V input range, stability with 0.1 μF ceramic output capacitance, thermal shutdown/overcurrent protection, and enable-controlled power sequencing in space-constrained RF subsystems.

Technical Context

The TLV70518YFMR uses a PMOS pass transistor architecture enabling low dropout and high PSRR (70 dB at 1 kHz) with minimal VIN–VOUT headroom. Its internal bandgap reference and error amplifier deliver 0.5% DC accuracy across –40°C to +125°C and 0–200 mA load range.

It features active-high enable (EN) with 0.9 V turn-on threshold and 0.4 V shutdown threshold, supporting direct GPIO control from low-voltage processors. The device remains stable with only 0.1 μF effective output capacitance and regulates accurately even at zero load.

Key Specifications

Pinout & Package

TLV70518YFMR is housed in a 4-pin PicoStar™ package (YFM), measuring 0.77 mm × 0.77 mm with maximum height of 0.15 mm - optimized for ultra-thin mobile PCBs and wearable form factors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC70518YFMR and MCP1700T-1802E/MB, TLV70518YFMR uniquely balances ultra-low profile, sub-150-mV dropout, 70-dB PSRR, and 0.9-V enable threshold - making it the optimal choice for space-constrained, noise-sensitive, and battery-limited RF handheld applications.

Availability

TLV70518YFMR is available at Aetrix Electronics and suitable for smartphone baseband power, Bluetooth LE modules, Zigbee sensor nodes, WLAN add-on cards, and other portable electronics requiring stable component supply with guaranteed long-term availability.

Supply support for TLV70518YFMR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.

The TLV705 series belongs to TI's ultra-low-profile LDO portfolio, designed specifically for battery-powered handheld devices where board space, thermal performance, and power efficiency are critical constraints.

FAQ

What is the output voltage tolerance of TLV70518YFMR over temperature and load?

The TLV70518YFMR provides ±0.5% typical DC output accuracy across –40°C to +125°C junction temperature and 0–200 mA load range. This specification is confirmed in Section 6.5 of the SBVS151F datasheet under "VO DC output accuracy" for VOUT ≥1 V. The 1.8-V nominal output remains within ±9 mV of target under full operating conditions, eliminating need for external calibration in most digital core applications.

Does TLV70518YFMR require an external pull-up resistor on the EN pin?

No, TLV70518YFMR does not require an external pull-up resistor on the EN pin. Its enable input has no internal pull-up; however, the device operates correctly when EN is directly tied to VIN for always-on configurations. For controlled sequencing, drive EN with a GPIO capable of ≥0.9 V high and ≤0.4 V low - no external biasing is needed per Section 5 (Pin Functions) of the TLV705 datasheet.

Can TLV70518YFMR be used with a 0.1 μF output capacitor?

Yes, TLV70518YFMR is explicitly specified to be stable with an effective output capacitance of 0.1 μF, as stated in the Features section and Section 8.1 of the SBVS151F datasheet. This capability allows use of small-case, high-bias-derating ceramics (e.g., 0402 X5R) while maintaining phase margin >45° - verified across temperature, input voltage, and load conditions.

What is the thermal shutdown behavior of TLV70518YFMR?

TLV70518YFMR activates thermal shutdown at 160°C junction temperature and resets at 140°C (20°C hysteresis), per Section 6.5 "tSD Thermal shutdown temperature". During sustained overload, it cycles between current limit and shutdown - dissipating heat until junction cools below reset threshold. This behavior is intrinsic to the die and requires no external components, protecting both the regulator and downstream circuitry.

Is TLV70518YFMR pin-compatible with other TLV705 family members in YFM package?

Yes, all TLV705 and TLV705P variants in the YFM (PicoStar™) package share identical 4-pin layout (GND–EN–VIN–VOUT in A1–A2–B2–B1 top view), per Section 5 "Pin Configuration and Functions". This includes TLV70512YFMR through TLV70548YFMR. Pin compatibility enables drop-in voltage replacement across the family without PCB redesign - provided EN logic and output capacitor requirements are met.