Texas Instruments TLV7113318DDSER

Overview

TLV7113318DDSER from Texas Instruments is a dual low-dropout linear regulator IC with fixed 3.3V and 1.8V outputs, 200mA per channel, 35µA quiescent current per regulator, and 1.5mm × 1.5mm SON-6 package - designed for power-sensitive portable devices such as smartphones and MP3 players.

For engineers reviewing the TLV7113318DDSER datasheet, TLV7113318DDSER pinout, TLV7113318DDSER application, or TLV7113318DDSER equivalent, key selection criteria include dual-output voltage pairing, ultra-low IQ for battery life extension, EN pin pull-down resistors for robust disable behavior during GPIO indeterminate states, and stability with 0.1µF ceramic output capacitors.

Technical Context

The TLV7113318DDSER integrates two independent PMOS-based LDO regulators sharing a common input and ground, each with dedicated VREF and active pulldown circuitry to rapidly discharge its output upon shutdown. It features separate enable pins (EN1/EN2) with internal 150kΩ pull-down resistors - a defining trait of the TLV711-D series.

Its architecture delivers 2% output accuracy over –40°C to +125°C, supports input voltages from 2.0V to 5.5V, and maintains stability with ≥0.1µF effective output capacitance - enabling compact, low-ESR ceramic capacitor use without external compensation.

Key Specifications

Pinout & Package

Package: 1.5mm × 1.5mm SON-6 (DSE), wettable flank, 0.5mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL7113318DQNR and TPS7A203318PDBVR, the TLV7113318DDSER uniquely combines EN pin pull-down resistors, 0.1µF minimum C_OUT support, and SON-6 wettable flank packaging - making it optimal for cost-sensitive, high-volume portable designs requiring robust startup/shutdown behavior without added passives.

Availability

TLV7113318DDSER is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, MP3 player audio subsystems, and industrial handheld terminals requiring stable component supply and long-term production continuity.

Supply support for TLV7113318DDSER 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 solutions, with leadership in power management ICs for portable and industrial applications.

The TLV711 series was designed specifically for battery-powered portable electronics needing dual, low-IQ, fault-tolerant LDO regulation - emphasizing EN reliability, small footprint, and minimal external components.

FAQ

What are the fixed output voltages of the TLV7113318DDSER?

The TLV7113318DDSER provides two fixed, factory-programmed output voltages: 3.3V on OUT1 and 1.8V on OUT2. These values are laser-trimmed during manufacturing and cannot be adjusted. The "3318" in the part number explicitly denotes this voltage pairing, and the device operates across an input range of 2.0V to 5.5V while maintaining ±2% accuracy from –40°C to +125°C.

Does the TLV7113318DDSER have internal pull-down resistors on its enable pins?

Yes, the TLV7113318DDSER includes internal 150kΩ pull-down resistors on both EN1 and EN2 pins - a defining feature of the TLV711-D series. This ensures the regulators remain disabled when the enable signals are floating or driven by a tristated GPIO, preventing unintended power-up during system reset or initialization. This eliminates the need for external pull-down resistors in most designs.

What is the minimum output capacitance required for stability with the TLV7113318DDSER?

The TLV7113318DDSER is stable with an effective output capacitance of 0.1µF or greater, enabling use of small-footprint X5R/X7R ceramic capacitors (e.g., 0402 or 0201). While 1µF is recommended for optimal transient response and PSRR, the 0.1µF minimum allows significant board space savings in size-constrained portable applications - a key advantage over older LDO families requiring ≥2.2µF.

How does the TLV7113318DDSER handle output discharge during shutdown?

The TLV7113318DDSER incorporates active pulldown circuitry on both OUT1 and OUT2, which rapidly discharges the output capacitors when either EN1 or EN2 is deasserted. This prevents floating or slowly decaying voltage rails that could cause latch-up or data corruption in downstream logic. Unlike passive discharge paths, this feature ensures predictable, fast, and controlled rail collapse - critical in multi-rail systems with strict power sequencing requirements.

What protection features are integrated into the TLV7113318DDSER?

The TLV7113318DDSER integrates overcurrent protection (trip point ~350mA), thermal shutdown (trigger at +165°C, reset at +145°C), and undervoltage lockout (UVLO activates below 1.9V VIN). All protections operate independently per channel and feature auto-recovery behavior. These safeguards protect the device and load during fault conditions such as output shorts, excessive ambient temperature, or brownout events - without requiring external supervision circuitry.