Texas Instruments TLV70719PDQNT

Overview

TLV70719PDQNT from Texas Instruments is a 200-mA, low-quiescent-current (25 µA), low-noise LDO regulator with 1.9-V fixed output voltage, 0.5% DC accuracy, and 70 dB PSRR at 100 Hz. It operates from 2.0 V to 5.5 V input and delivers stable regulation down to 0.1-µF output capacitance-enabling compact, cost-effective power for RF-sensitive portable electronics.

For engineers reviewing the TLV70719PDQNT datasheet, TLV70719PDQNT pinout, TLV70719PDQNT application, or TLV70719PDQNT equivalent, key selection criteria include dropout voltage (≤250 mV at 150 mA), active pulldown resistance (120 Ω), shutdown current (1 µA), thermal/overcurrent protection, and X2SON package compatibility with space-constrained PCB layouts.

Technical Context

The TLV70719PDQNT integrates a PMOS pass transistor with internal current limiting and thermal shutdown circuitry, supporting safe operation across –40°C to +125°C junction temperature. Its enable pin (EN) features TTL-compatible thresholds (VIH = 0.9 V, VIL = 0.4 V) and drives an internal 120-Ω pulldown resistor during shutdown to rapidly discharge the output.

This device achieves high PSRR (70 dB @ 100 Hz, 50 dB @ 1 MHz) and low output noise (45 µVRMS, 100 Hz–100 kHz) while maintaining stability with minimal 0.1-µF effective output capacitance-reducing BOM cost and board area versus traditional LDOs requiring ≥1-µF ceramics.

Key Specifications

Pinout & Package

TLV70719PDQNT uses the DQN (X2SON) 4-pin package: 1.00 mm × 1.00 mm footprint with wettable flank leads and exposed thermal pad for enhanced thermal performance in ultra-thin applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL720F19PDBVR and MCP1700T-1902E/TT, TLV70719PDQNT uniquely balances ultra-low noise (45 µVRMS), high PSRR (70 dB @ 100 Hz), and integrated 120-Ω pulldown-making it optimal for RF-critical, space-constrained portable designs requiring both precision regulation and rapid power sequencing.

Availability

TLV70719PDQNT is available at Aetrix Electronics and suitable for smart phones, wearable electronics, and wireless handsets requiring stable component supply with consistent parametric performance and long-term manufacturability.

Supply support for TLV70719PDQNT 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 specializing in analog and embedded processing technologies, with leadership in power management ICs and high-reliability signal chain solutions.

The TLV707 series was designed specifically for portable RF applications-delivering low-noise, low-IQ regulation in ultra-small packages to meet stringent size, efficiency, and EMI requirements of modern mobile and wearable platforms.

FAQ

What is the maximum input voltage rating for TLV70719PDQNT?

The absolute maximum input voltage for TLV70719PDQNT is 6.0 V. However, the recommended operating range is 2.0 V to 5.5 V. Exceeding 6.0 V may cause permanent damage. The device maintains full specification compliance-including 0.5% output accuracy and 25 µA quiescent current-only within the recommended range. Always observe derating guidelines for reliability in high-temperature environments.

Does TLV70719PDQNT require an external pull-up resistor on the EN pin?

No, TLV70719PDQNT does not require an external pull-up resistor on the EN pin. Its enable threshold is VIH(EN) = 0.9 V (min), compatible with standard GPIO outputs. When EN is left floating, the internal circuitry ensures reliable disable behavior due to leakage control. For robust noise immunity in high-EMI environments, a weak 100-kΩ pull-up to VIN is optional-but not required-for deterministic startup.

Can TLV70719PDQNT operate with a 0.1-µF output capacitor in all conditions?

Yes, TLV70719PDQNT is specified to remain stable with an effective output capacitance of 0.1 µF or greater-including under bias voltage and temperature derating. This means a 0.1-µF X5R/X7R ceramic rated at 6.3 V or higher will typically provide sufficient effective capacitance across –40°C to +85°C and 0–200 mA load. Verify effective COUT using manufacturer derating curves before final design sign-off.

What is the purpose of the 120-Ω pulldown resistor in TLV70719PDQNT?

The 120-Ω pulldown resistor in TLV70719PDQNT actively discharges the output node when the device enters shutdown mode (EN < 0.4 V). This eliminates reliance on external discharge paths, enabling fast, predictable power-down sequencing in systems with multiple dependent rails-such as USB-C accessories or multi-rail sensor hubs-where uncontrolled floating voltages could cause latch-up or false wake events.

How does TLV70719PDQNT handle reverse voltage at the OUT pin?

TLV70719PDQNT contains a body diode in its PMOS pass transistor that conducts when OUT exceeds IN. This diode is not current-limited, so reverse current flow can exceed safe levels if unmanaged. For applications with potential reverse bias-such as hot-swap or back-drive scenarios-TI recommends limiting reverse current to ≤5% of rated output current (≤10 mA) using an external series diode or MOSFET switch to prevent damage or unintended system behavior.