Texas Instruments TLV61046ADBVT

Overview

TLV61046ADBVT from Texas Instruments is a highly-integrated 1-MHz boost DC-DC converter with integrated 30-V power switch, input-to-output isolation FET, and rectifier diode. It delivers up to 28 V output from 1.8–5.5 V input, features ±2.5% output voltage accuracy, 980-mA typical switch current limit, and true input-output disconnection during shutdown - enabling compact PMOLED bias supplies and sensor module power rails.

For engineers reviewing the TLV61046ADBVT datasheet, TLV61046ADBVT pinout, TLV61046ADBVT application, or TLV61046ADBVT equivalent, key selection considerations include its 3-mm × 3-mm SOT23-6 package, internal 12-V fixed output mode (FB-to-VIN), 7-ms soft start, output overvoltage protection at 29.2 V, and PFM/PWM dual-mode operation for light-load efficiency.

Technical Context

The TLV61046ADBVT uses current-mode control with adaptive constant off-time and operates at a quasi-constant 1.0 MHz switching frequency. Its functional block integrates PWM/PSM mode selection, undervoltage lockout (1.55 V falling, 1.75 V rising), EN-controlled shutdown with <1-µA quiescent current, and pre-charge + switching soft-start phases totaling ~7 ms.

It implements three independent protection mechanisms: output short-circuit limiting (≤200 mA at VOUT = 0 V), overvoltage protection with 0.9-V hysteresis (trip at 29.2 V), and thermal shutdown at 150°C with 20°C hysteresis. The isolation FET disconnects VIN from VOUT in shutdown and overload, eliminating leakage paths.

Key Specifications

Pinout & Package

TLV61046ADBVT is housed in a 3-mm × 3-mm SOT23-6 (DBV) package with 2.9 mm × 1.6 mm body size and standard lead pitch. Thermal resistance is R_θJA = 177.7°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar boost converter applications.

Compared with TPS61040DBVR and MAX17222ETA+, the TLV61046ADBVT uniquely combines 28-V capability, integrated isolation switch, and comprehensive protection (OVP, SCP, thermal) in a proven SOT23-6 package - making it optimal for safety-critical, low-leakage, and high-reliability portable power rails.

Availability

TLV61046ADBVT is available at Aetrix Electronics and suitable for PMOLED panel power supplies, LCD bias generation, and wearable sensor modules requiring stable component supply, long-term manufacturability, and guaranteed traceability.

Supply support for TLV61046ADBVT 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 DC-DC converter innovation.

The TLV61046ADBVT belongs to TI's low-power boost converter product line, designed specifically for space-constrained, battery-operated applications demanding high integration, robust protection, and minimal external component count.

FAQ

What is the maximum output voltage supported by the TLV61046ADBVT?

The TLV61046ADBVT supports a maximum output voltage of 28 V. This rating is specified under recommended operating conditions and is enforced by internal output overvoltage protection that triggers at 29.2 V. The device achieves this from input voltages as low as 1.8 V, making it suitable for single-cell Li+ or two-cell alkaline battery systems where high-voltage bias rails are needed for displays or sensors.

How does the TLV61046ADBVT achieve true input-output disconnection during shutdown?

The TLV61046ADBVT achieves true input-output disconnection using an integrated input-to-output isolation FET. When the EN pin is pulled low, the device enters shutdown mode and actively turns off this isolation switch, breaking the conductive path between VIN and VOUT. This reduces shutdown current to 0.1–1.0 µA and prevents battery drain in always-connected wearable or medical devices - a capability not found in conventional boost converters without dedicated isolation switches.

Can the TLV61046ADBVT operate with only three external components?

Yes, the TLV61046ADBVT can operate with only three external components - an inductor, input capacitor, and output capacitor - when configured for its internal 12-V fixed output mode. This is accomplished by connecting the FB pin directly to the VIN pin, which activates the internal feedback network. No external resistor divider is needed, minimizing solution size and bill-of-materials cost while maintaining ±2.5% output accuracy across temperature.

What protection features are built into the TLV61046ADBVT?

The TLV61046ADBVT integrates four critical protection features: (1) output overvoltage protection (OVP) triggering at 29.2 V with 0.9-V hysteresis; (2) output short-circuit protection limiting current to <200 mA when VOUT is grounded; (3) thermal shutdown at 150°C with 20°C hysteresis; and (4) undervoltage lockout (UVLO) with 200-mV hysteresis to prevent erratic operation near battery depletion. These functions are implemented entirely within the IC and require no external circuitry.

Does the TLV61046ADBVT support both PWM and PFM operation modes?

Yes, the TLV61046ADBVT automatically operates in PWM mode under moderate-to-heavy loads and transitions to power-save mode (PFM) at light loads. In PFM mode, the device pulses only as needed to maintain regulation, reducing switching losses and improving efficiency below ~200-mA peak inductor current. This dual-mode architecture enables >85% efficiency at full load (3.6-V input, 12-V output) and maintains >80% efficiency even at 100-µA output currents - ideal for intermittent-sensing wearable applications.