Texas Instruments TLV7111323DDSER

Overview

TLV7111323DDSER from Texas Instruments is a dual-channel, 200mA low-dropout linear regulator with fixed 1.3V and 2.3V outputs, 2% accuracy over temperature, 35µA quiescent current per channel, and 150mV dropout at 200mA (VOUT = 2.8V). It serves as a compact power supply for dual-rail subsystems in portable electronics.

For engineers reviewing the TLV7111323DDSER datasheet, TLV7111323DDSER pinout, TLV7111323DDSER application, or TLV7111323DDSER equivalent, key selection criteria include independent enable control per channel, active pulldown on outputs, EN pin pull-down resistors for GPIO-safe disable, and stability with 0.1µF ceramic output capacitors.

Technical Context

The TLV7111323DDSER integrates two independent PMOS-based LDO regulators sharing a common input but featuring dedicated VREF and output stages to minimize crosstalk. Each channel includes thermal shutdown, over-current protection, and undervoltage lockout (UVLO) at 1.9V.

Its EN1/EN2 pins incorporate internal pull-down resistors (6mA IEN), ensuring reliable disable when driven by high-impedance or three-stated processor GPIOs. The device supports simultaneous or staggered startup via separate enable signals and delivers fast load transient response due to low output impedance and optimized internal compensation.

Key Specifications

Pinout & Package

Package: 1.5mm × 1.5mm SON-6 (DSE), thermally enhanced, exposed pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV7101323DDSER, TLV7111323DDSER adds EN pull-downs for robust disable behavior with weak drivers, while TPL7407LDDAR serves a completely different circuit role-making TLV7111323DDSER the only direct dual-LDO alternative with matching functionality and package compatibility.

Availability

TLV7111323DDSER is available at Aetrix Electronics and suitable for mobile baseband power, wearable sensor hubs, and industrial IoT nodes requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TLV7111323DDSER 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.

The TLV711 series belongs to TI's ultra-low-IQ dual-LDO product line, designed specifically for battery-powered portable devices where independent rail control, minimal quiescent current, and robust enable behavior are critical.

FAQ

What output voltages does the TLV7111323DDSER provide?

The TLV7111323DDSER provides two fixed, factory-programmed output voltages: 1.3V on OUT1 and 2.3V on OUT2. These values are laser-trimmed during manufacturing and specified with ±2% accuracy over the full operating temperature range (–40°C to +125°C). The dual-output configuration eliminates the need for external feedback resistors and simplifies design for systems requiring tightly matched low-voltage rails.

Does TLV7111323DDSER require external pull-down resistors on EN1 and EN2?

No, TLV7111323DDSER does not require external pull-down resistors on EN1 and EN2. It integrates internal 6mA pull-down resistors on both enable pins, ensuring reliable disable when connected to high-impedance or three-stated GPIOs (e.g., during MCU reset or boot). This feature distinguishes it from the TLV710 variant and reduces BOM count and layout complexity in portable designs.

What is the minimum output capacitance required for stability with TLV7111323DDSER?

The TLV7111323DDSER is stable with an effective output capacitance of 0.1µF or greater. While 1µF X5R/X7R ceramic capacitors are recommended for optimal PSRR and transient performance, the device maintains phase margin and avoids oscillation even with smaller 0.1µF ceramics - enabling use of space-constrained 0201 or 0402 packages in ultra-thin wearables and medical devices.

How does TLV7111323DDSER handle output short-circuit conditions?

Under output short-circuit, TLV7111323DDSER activates its internal current limit (220–550mA typical), forcing the output voltage to collapse to ILIMIT × RLOAD. Simultaneously, the PMOS pass element dissipates (VIN – VOUT) × ILIMIT until thermal shutdown triggers at +165°C. After cooling to +145°C, the device auto-recovers. This cycle repeats as long as the fault persists, protecting both the IC and downstream circuitry without requiring external current-sense components.

Can TLV7111323DDSER be used with a 2.5V input supply for the 2.3V output?

Yes, TLV7111323DDSER can operate with a 2.5V input for the 2.3V output. Its dropout voltage is 140–200mV at 200mA for VOUT ≥ 3.3V, and lower for lower outputs; at 2.3V/200mA, measured dropout is ≤120mV. With 2.5V input, headroom is 200mV - sufficient for stable regulation. However, ensure VIN remains above the 1.9V UVLO threshold and that thermal limits are observed under full load at elevated ambient temperatures.