Texas Instruments TLV7163318PDPQT

Overview

TLV7163318PDPQT from Texas Instruments is a capacitor-free, dual-channel, 150-mA low-dropout (LDO) voltage regulator with fixed outputs of 3.3 V and 1.8 V, input range 1.4 V to 5.5 V, ±1.5% output accuracy over –40°C to 125°C, and integrated inrush current control. It powers core logic and I/O rails in space-constrained portable electronics.

For engineers reviewing the TLV7163318PDPQT datasheet, TLV7163318PDPQT pinout, TLV7163318PDPQT application, or TLV7163318PDPQT equivalent, key selection considerations include dual-rail stability without external capacitors, independent enable control per channel, low dropout at full load (e.g., 420 mV at 3.3 V/150 mA), thermal shutdown behavior, and pulldown capability on TLV716P variants.

Technical Context

The TLV7163318PDPQT integrates two independent PMOS-based LDO regulators sharing a common IN and GND, each with dedicated EN and OUT pins. Its internal control loop enables stable operation with or without input/output capacitors - eliminating mandatory external capacitance while maintaining <0.2% load regulation and <0.2%/V line regulation.

Each channel features foldback current limiting, undervoltage lockout (1.3 V typical), and active-high enable with 0.9 V turn-on threshold. The TLV716P variant adds an internal 120-Ω pulldown resistor on each output for fast discharge during shutdown - confirmed by electrical characteristics table and pin function description.

Key Specifications

Pinout & Package

TLV7163318PDPQT uses a 1.2-mm × 1.2-mm X2SON-6 (DPQ) package with exposed thermal pad. The compact footprint supports high-density PCB layouts in smartphones, wearables, and compact modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV7163318PDPQT, TPS7A2033PDQNR lacks dual-output capability and independent enable control, increasing system-level component count and layout complexity; no verified dual-channel pin-compatible alternatives exist in TI's portfolio for this exact 3.3 V/1.8 V combination in DPQ package.

Availability

TLV7163318PDPQT is available at Aetrix Electronics and suitable for wireless handsets, portable medical sensors, and industrial edge node controllers requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for TLV7163318PDPQT 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 for consumer, industrial, and automotive markets.

TLV7163318PDPQT belongs to the TLV716P family of capacitor-free dual LDOs designed specifically for space-constrained, battery-powered applications demanding minimal external components and fast output discharge.

FAQ

What is the function of the EN1 and EN2 pins on the TLV7163318PDPQT?

The EN1 and EN2 pins are independent active-high enable inputs for the 3.3 V and 1.8 V regulators, respectively. Driving either pin above 0.9 V enables its corresponding output; pulling it below 0.4 V disables that regulator and activates the internal 120-Ω pulldown resistor on TLV7163318PDPQT's respective output. This allows precise sequencing and fast discharge control per rail without external circuitry.

Does TLV7163318PDPQT require external capacitors to operate stably?

No - TLV7163318PDPQT is explicitly designed for capacitor-free operation. Its advanced internal control loop ensures stability with or without input or output capacitors. However, adding a 0.1–1 µF ceramic capacitor on IN and/or 0.1–100 µF on each OUT improves PSRR, transient response, and noise performance - especially in noisy environments or high-dynamic-load applications.

What is the maximum dropout voltage for TLV7163318PDPQT at full load?

At 150 mA load, TLV7163318PDPQT exhibits a maximum dropout voltage of 420 mV for the 3.3 V output (V_DO = 0.42 V) and 350 mV for the 1.8 V output (V_DO = 0.35 V), per electrical characteristics table. These values ensure regulation down to ~3.72 V input for 3.3 V rail and ~2.15 V for 1.8 V rail - critical for battery-powered systems operating near end-of-life voltage.

How does the TLV7163318PDPQT handle thermal overload conditions?

TLV7163318PDPQT incorporates thermal shutdown protection that disables both outputs when junction temperature reaches ~158°C. Once the die cools to ~140°C, regulation resumes automatically. This cycling prevents permanent damage but indicates excessive power dissipation - designers must verify junction temperature using P_D = (V_IN−V_OUT1)×I_OUT1 + (V_IN−V_OUT2)×I_OUT2 and R_θJA = 149.3°C/W to stay within 125°C max operating limit.

Is TLV7163318PDPQT compatible with lithium-ion battery input sources?

Yes - TLV7163318PDPQT supports input voltages from 1.4 V to 5.5 V, fully covering the 3.0 V to 4.2 V operating range of single-cell Li-ion batteries. Its low dropout (e.g., 420 mV at 3.3 V/150 mA) ensures regulation remains active until battery voltage drops below ~3.72 V, maximizing usable battery capacity. UVLO (1.3 V typical) prevents erratic behavior during deep discharge.