Texas Instruments TLV70229DSET

Overview

TLV70229DSET from Texas Instruments is a 2.9-V fixed-output, 300-mA low-dropout (LDO) linear regulator in a 6-pin WSON package, featuring 2% output accuracy, 35-μA quiescent current, 260-mV dropout at 300 mA, and 68-dB PSRR at 1 kHz-designed for Li-ion–powered handheld devices requiring stable low-noise bias.

For engineers reviewing the TLV70229DSET datasheet, TLV70229DSET pinout, TLV70229DSET application, or TLV70229DSET equivalent, key selection considerations include dropout performance under 300-mA load, thermal shutdown behavior at 165°C, stability with ≥0.1-μF ceramic output capacitance, and enable-pin logic thresholds (0.9 V high / 0.4 V low).

Technical Context

The TLV70229DSET uses a PMOS pass transistor to achieve low dropout and maintains regulation down to 2.9 V output with input as low as 3.16 V at full load. Its precision bandgap reference and error amplifier deliver ±2% DC accuracy across –40°C to +125°C junction temperature.

It integrates active protection including thermal shutdown (trip at 165°C, reset at 145°C), current limit (320–860 mA), undervoltage lockout (1.9 V), and an enable-controlled shutdown mode drawing only 1–2 μA. Unlike the TLV702P variant, TLV70229DSET does not include active pulldown circuitry.

Key Specifications

Pinout & Package

TLV70229DSET is packaged in a 1.5-mm × 1.5-mm, 6-pin WSON (DSE) package with wettable flanks, optimized for space-constrained PCBs and automated optical inspection (AOI). Thermal resistance R_θJA is 321.3°C/W (JEDEC standard board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC70229DBVR and MCP1702T-2902E/MB, TLV70229DSET delivers superior PSRR and lower dropout in the smallest footprint-making it optimal for next-generation wearable and IoT edge nodes demanding both size and performance.

Availability

TLV70229DSET is available at Aetrix Electronics and suitable for wireless handsets, Zigbee® network nodes, and Bluetooth® audio peripherals requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.

Supply support for TLV70229DSET 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 and broad automotive/industrial qualification.

The TLV702 series was engineered specifically for battery-powered portable electronics-emphasizing ultra-low IQ, fast transient response, and robust protection in miniature packages like WSON and SOT-23.

FAQ

What is the maximum input voltage rating for TLV70229DSET?

The absolute maximum input voltage for TLV70229DSET is 6.0 V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent device damage. For reliable continuous operation, TI recommends staying within the recommended range of 2 V to 5.5 V, with sufficient margin above the 260-mV dropout to maintain regulation at full 300-mA load.

Does TLV70229DSET include an active output discharge feature?

No, TLV70229DSET does not include active output discharge. That function is exclusive to the TLV702P variant (e.g., TLV70229P), which integrates a 120-Ω internal pulldown resistor activated during shutdown. TLV70229DSET relies on external discharge paths or natural load decay; designers must add external circuitry if rapid VOUT discharge is required.

Can TLV70229DSET operate stably with a 0.1-μF output capacitor?

Yes, TLV70229DSET is explicitly designed to remain stable with an effective output capacitance of ≥0.1 μF, including X5R/X7R ceramic types. However, "effective" means capacitance under actual bias voltage and temperature-so a 0.1-μF rated capacitor may derate below that threshold. TI recommends verifying effective C_OUT ≥0.1 μF at worst-case V_IN, T_J, and bias conditions.

What is the thermal shutdown behavior of TLV70229DSET?

TLV70229DSET activates thermal shutdown at approximately 165°C junction temperature and resets regulation when cooled to ~145°C. This hysteresis prevents oscillation near trip point. Under sustained overload, the device cycles between shutdown and regulation-indicating inadequate heatsinking or excessive power dissipation. For reliable operation, keep T_J ≤125°C using PCB copper area and proper NC-pin grounding.

Is TLV70229DSET pin-compatible with other TLV702xx variants in the WSON-6 package?

Yes, all TLV702xx parts in the DSE (WSON-6) package-including TLV70229DSET-share identical pinout: IN (1), GND (2), OUT (3), NC (4), NC (5), EN (6). Output voltage is set internally; no external resistors are needed. This allows drop-in replacement across voltages (1.2 V to 4.8 V) when board layout and thermal design accommodate the specific V_OUT and load requirements.