Texas Instruments TLV71330PDBVR

Overview

TLV71330PDBVR from Texas Instruments is a capacitor-free, 150-mA low-dropout linear regulator with fixed 3.0-V output, 1% accuracy, 230 mV dropout at full load, 50 µA quiescent current, and active output discharge. It operates from 1.4 V to 5.5 V input and delivers stable power to ultra-low-power microcontrollers and RF modules in space-constrained portable devices.

For engineers reviewing the TLV71330PDBVR datasheet, TLV71330PDBVR pinout, TLV71330PDBVR application, or TLV71330PDBVR equivalent, key selection criteria include foldback current limiting for short-circuit robustness, capacitor-free stability enabling minimal BOM count, thermal shutdown at 158°C, and compatibility with battery-powered systems requiring fast output discharge during shutdown.

Technical Context

The TLV71330PDBVR implements a PMOS pass transistor architecture enabling ultra-low dropout and inherent reverse-current blocking. Its internal foldback current limit reduces output current under overload to limit power dissipation and prevent thermal runaway.

Unlike traditional LDOs, it achieves stability without an output capacitor via internal compensation, while remaining compatible with external COUT up to 100 µF. The P-suffix variant integrates a 120-Ω pulldown resistor on the OUT pin for active discharge-critical for systems requiring rapid voltage decay between power cycles.

Key Specifications

Pinout & Package

TLV71330PDBVR uses the 5-pin SOT-23 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed thermal pad electrically connected to GND for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F3BHTSA1 and MCP1703T-3002E/MB, TLV71330PDBVR uniquely balances ultra-low dropout (230 mV), capacitor-free stability, foldback current limiting, and active output discharge in a compact SOT-23 package - making it optimal for consumer portable devices where size, fault resilience, and fast power cycling are prioritized over automotive qualification or sub-µA quiescent current.

Availability

TLV71330PDBVR is available at Aetrix Electronics and suitable for wearable health sensors, BLE wireless modules, industrial handheld scanners, and portable medical diagnostic devices requiring stable component supply with guaranteed long-term availability.

Supply support for TLV71330PDBVR 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 across industrial, automotive, and personal electronics markets.

The TLV713 series was designed specifically for power-sensitive portable devices requiring capacitor-free LDOs with fast transient response, foldback protection, and active discharge - targeting battery-operated PDAs, MP3 players, WLAN cards, and modern IoT endpoints.

FAQ

What is the maximum input voltage rating for TLV71330PDBVR?

The absolute maximum input voltage for TLV71330PDBVR is 6 V, but the recommended operating range is 1.4 V to 5.5 V. Exceeding 6 V risks permanent damage per the Absolute Maximum Ratings table. For reliable operation in Li-ion systems, VIN should stay below 4.3 V during charge termination to maintain margin against transient spikes.

Does TLV71330PDBVR require an output capacitor to operate stably?

No, TLV71330PDBVR is explicitly designed for capacitor-free operation and remains stable with 0 µF C_OUT. It is also stable with any ceramic output capacitor from 0.1 µF to 100 µF. This flexibility eliminates mandatory external components while allowing designers to add C_OUT for improved transient response or noise filtering when needed.

How does the foldback current limit behave in TLV71330PDBVR during a short circuit?

Under short-circuit conditions, TLV71330PDBVR reduces output current from 150 mA to approximately 40 mA (ISC = 40 mA), lowering power dissipation and preventing thermal runaway. This foldback behavior is confirmed in the Electrical Characteristics table and Figure 16, distinguishing it from constant-current limiters that sustain full current into a short.

What is the purpose of the NC pin on TLV71330PDBVR?

The NC (No Connect) pin on TLV71330PDBVR (Pin 4 in DBV package) has no internal bond wire or circuit connection. It must remain unconnected or be tied to GND - neither configuration affects regulation, but grounding may improve mechanical stability during reflow. TI's Pin Functions table explicitly states "No internal connection" for this terminal.

Can TLV71330PDBVR be used with a 1.8-V enable signal?

Yes, TLV71330PDBVR supports 1.8-V GPIOs directly: its enable threshold is V_EN(HI) = 0.9 V minimum and V_EN(LO) = 0.4 V maximum. A 1.8-V logic high exceeds the 0.9-V turn-on threshold with ample margin, and the EN pin draws only 0.01 µA, eliminating loading concerns on microcontroller outputs.