Texas Instruments TLV70029DSER

Overview

TLV70029DSER from Texas Instruments is a 200-mA, low-quiescent-current, low-dropout linear regulator with fixed 2.9-V output, PMOS pass element, 2% DC accuracy over –40°C to +125°C, 43 mV dropout at 50 mA, and 31 μA quiescent current - designed for Li-ion–powered portable devices requiring stable, low-noise bias for RF ICs and microcontrollers.

For engineers reviewing the TLV70029DSER datasheet, TLV70029DSER pinout, TLV70029DSER application, or TLV70029DSER equivalent, key selection considerations include dropout performance under load, enable threshold compatibility with 1.8-V logic, thermal shutdown behavior at 160°C, and stability with ≥0.1-μF ceramic output capacitance in space-constrained layouts.

Technical Context

The TLV70029DSER employs a PMOS pass transistor architecture enabling ultra-low dropout voltage that scales with load current (e.g., 43 mV @ 50 mA, 85 mV @ 100 mA). Its precision bandgap reference and error amplifier deliver ±2% output accuracy across full temperature and line/load ranges.

It integrates active-high enable (VEN_H = 0.9 V min), undervoltage lockout (UVLO = 1.9 V), thermal shutdown (trip = 160°C, reset = 140°C), and foldback current limiting (ICL = 220–860 mA). PSRR reaches 68 dB at 1 kHz, and output noise is 48 μVRMS (100 Hz–100 kHz).

Key Specifications

Pinout & Package

TLV70029DSER is housed in a 1.5-mm × 1.5-mm WSON-6 package (DSE suffix) with wettable flanks, rated for 321.3°C/W junction-to-ambient thermal resistance. The exposed thermal pad must be soldered to PCB ground for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC70029DBVR and MCP1700T-2902E/TT, TLV70029DSER delivers superior thermal safety margin, tighter DC accuracy, and best-in-class PSRR/noise trade-off - making it the preferred choice for RF-sensitive, thermally demanding, or dynamically controlled portable systems.

Availability

TLV70029DSER is available at Aetrix Electronics and suitable for wireless handsets, BLE sensor nodes, Zigbee® routers, and Li-ion–powered industrial data loggers requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TLV70029DSER 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 power management technologies, with decades of LDO design expertise and broad automotive/industrial qualification.

The TLV700 series was engineered specifically for portable, battery-powered applications demanding ultra-low IQ, high PSRR, and minimal footprint - targeting smartphones, wearables, and wireless sensor networks.

FAQ

What is the minimum input voltage required for TLV70029DSER to regulate 2.9 V at 200 mA?

The TLV70029DSER requires VIN ≥ VOUT + VDO. At 200 mA and 2.9 V output, its dropout voltage is 175 mV (per datasheet Section 6.5). Therefore, minimum input is 2.9 V + 0.175 V = 3.075 V. Below this, the device enters dropout mode and output drops linearly with input.

Can TLV70029DSER operate with a 0.1-μF output capacitor, and what type is recommended?

Yes - TLV70029DSER is explicitly characterized and guaranteed stable with ≥0.1-μF effective output capacitance. TI recommends X5R or X7R ceramic capacitors due to low bias/temperature derating. The "effective" value accounts for voltage and temperature derating; a 1-μF rated 0402 X7R typically retains >0.1 μF under 2.9 V bias and 85°C.

Does TLV70029DSER support reverse current protection, and how does it behave if VOUT exceeds VIN?

TLV70029DSER uses a PMOS pass transistor with an inherent body diode from OUT to IN. If VOUT > VIN, this diode conducts uncontrolled reverse current - not limited by internal circuitry. For reverse-voltage protection, an external Schottky diode or ideal diode controller is required. The datasheet advises limiting reverse current to ≤5% of rated output current.

What is the shutdown current of TLV70029DSER, and how is EN interfaced with 1.8-V logic?

In shutdown (VEN < 0.4 V), TLV70029DSER draws 1–2 μA typical ground current. Its enable pin accepts 1.8-V logic directly: logic HIGH ≥0.9 V enables regulation; logic LOW ≤0.4 V disables it. No level shifter is needed, simplifying interface with modern low-voltage MCUs and PMICs.

How does thermal shutdown function in TLV70029DSER, and what is the safe operating junction temperature limit?

TLV70029DSER triggers thermal shutdown at TJ ≈ 160°C and resets at ≈140°C, providing 20°C hysteresis. Its absolute maximum junction temperature is 150°C, but continuous operation above 125°C is not recommended. For reliable long-term operation, design must ensure TJ ≤125°C under worst-case ambient, power dissipation, and PCB copper area.