Texas Instruments TLV70533YFMR

Overview

TLV70533YFMR from Texas Instruments is a 3.3-V fixed-output, 200-mA low-dropout (LDO) linear regulator in a 0.77-mm × 0.77-mm PicoStar™ package, featuring 0.5% output accuracy, 35-μA quiescent current, and 145-mV dropout at full load - designed for power-sensitive RF and portable applications such as Bluetooth® and Zigbee® modules.

For engineers reviewing the TLV70533YFMR datasheet, TLV70533YFMR pinout, TLV70533YFMR application, or TLV70533YFMR equivalent, key selection criteria include ultra-low profile packaging, stability with 0.1-μF ceramic output capacitance, high PSRR (70 dB @ 1 kHz), thermal shutdown protection, and enable-controlled shutdown with 1-μA quiescent current in disabled state.

Technical Context

The TLV70533YFMR employs a PMOS pass transistor architecture enabling low dropout voltage and input-to-output headroom as low as 145 mV at 200 mA. Its internal bandgap reference and error amplifier deliver 0.5% typical DC accuracy across –40°C to +125°C junction temperature.

It integrates undervoltage lockout (UVLO) triggering at 1.9 V, active-high enable logic (VIH = 0.9 V), and thermal shutdown at 160°C. The device operates stably with only 0.1 μF effective output capacitance - a design enabler for space-constrained, battery-powered systems requiring fast transient response and low noise.

Key Specifications

Pinout & Package

TLV70533YFMR uses the YFM 4-pin PicoStar™ package (0.77 mm × 0.77 mm, 0.15-mm max height), optimized for ultra-thin portable designs. Pin assignment follows standard top-view layout with ball-grid arrangement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC750M33QDCKRQ1 and MCP1703T-3302E/MB, TLV70533YFMR delivers the best balance of ultra-miniature size, low noise, and high PSRR for space-constrained portable electronics - making it optimal for handheld, wearable, and wireless modules where board area and signal integrity are critical.

Availability

TLV70533YFMR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, smartphone peripheral modules, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TLV70533YFMR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The TLV705 series belongs to TI's ultra-low-IQ LDO portfolio engineered specifically for battery-powered portable devices - emphasizing minimal board footprint, high PSRR, and robust thermal behavior in thin-profile packages like PicoStar™.

FAQ

What is the minimum input voltage required for TLV70533YFMR to maintain regulation?

The TLV70533YFMR requires VIN ≥ VOUT + VDO. With a nominal 3.3-V output and 145-mV dropout at 200 mA, the minimum functional input is 3.445 V. At lighter loads, dropout decreases - e.g., 105 mV at 150 mA yields 3.405 V minimum. Below the UVLO threshold of 1.9 V, the device remains disabled regardless of EN state.

Can TLV70533YFMR operate with a 0.1-μF ceramic output capacitor?

Yes - TLV70533YFMR is explicitly characterized and guaranteed stable with an effective output capacitance of 0.1 μF, including MLCCs with voltage/temperature derating. This enables use of small, cost-effective 0402/0201 capacitors without compromising phase margin or transient response.

Does TLV70533YFMR include reverse-voltage protection?

No - TLV70533YFMR contains a body diode between VOUT and VIN that conducts unidirectionally when VOUT > VIN. During reverse-bias conditions, current is not limited and may exceed safe levels. TI recommends adding an external Schottky diode or MOSFET-based reverse-polarity protection if VOUT could exceed VIN.

How does the enable pin (EN) behave during power-up?

The EN pin of TLV70533YFMR is active-high with VIH = 0.9 V (min) and VIL = 0.4 V (max). When VIN ramps first, the device remains off until EN exceeds 0.9 V. If EN is tied to VIN, regulation begins immediately after VIN crosses UVLO (1.9 V), with 100-μs typical start-up time to 98% of 3.3 V.

What thermal metrics apply to TLV70533YFMR in its YFM package?

In the YFM PicoStar™ package, TLV70533YFMR has RθJA = 191.7°C/W (JEDEC JESD51-7, 2s2p layout), RθJC(top) = 3.1°C/W, and ψJB = 26.5°C/W. These values reflect its ultra-thin construction - thermal performance relies heavily on PCB copper area and solder joint quality due to minimal case-to-ambient conduction path.