Texas Instruments TPS613222ADBVT

Overview

TPS613222ADBVT from Texas Instruments is a synchronous boost converter IC designed for ultra-low-power battery-powered systems, delivering 5-V fixed output at up to 1.8-A peak switch current with only 6.5-µA quiescent current and ±3% output voltage accuracy over temperature. It operates from 0.9-V to 5.5-V input and supports high-efficiency conversion (≥90% at 10-mA load, 1.5-V → 2.2-V), making it ideal for USB OTG power rails in portable medical devices and gaming peripherals.

For engineers reviewing the TPS613222ADBVT datasheet, TPS613222ADBVT pinout, TPS613222ADBVT application, or TPS613222ADBVT equivalent, key selection criteria include its 5-V fixed output, 1.8-A switch current limit, SOT-23-5 package footprint, thermal shutdown protection, and compatibility with external Schottky diodes for >500-mA sustained output current in 3-V-to-5-V conversions.

Technical Context

The TPS613222ADBVT uses a hysteretic current-mode control topology with synchronous rectification to maximize light-load efficiency while maintaining stable regulation. Its internal error amplifier adjusts inductor current offset to regulate output voltage, with a fixed 200-mA typical inductor ripple and adaptive constant-off-time operation when an external Schottky diode is added.

It features undervoltage lockout (UVLO) with 0.4-V turn-on threshold and 100-mV hysteresis, cycle-by-cycle peak current limiting (1.1–1.8-A range), and thermal shutdown at 150°C with 20°C hysteresis. The device supports operation down to 0.4-V input post-startup and achieves continuous/discontinuous conduction mode transition based on load and inductance.

Key Specifications

Pinout & Package

TPS613222ADBVT is packaged in a 2.9-mm × 1.6-mm 5-pin SOT-23 (DBV) package with exposed pad for thermal performance. Pin 1 = NC, Pin 2 = SW, Pin 3 = NC, Pin 4 = GND, Pin 5 = VOUT.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS613222ADBVT, TPS613221ADBVT and TPS613226ADBVT offer lower output voltages and reduced peak current capability-making them unsuitable for 5-V USB OTG or high-current portable medical applications where TPS613222ADBVT's 1.8-A switch rating and fixed 5-V output deliver critical design margin.

Availability

TPS613222ADBVT is available at Aetrix Electronics and suitable for portable medical devices, wireless gaming peripherals, tablet USB OTG power supplies, and industrial handheld scanners requiring stable component supply with guaranteed long-term availability.

Supply support for TPS613222ADBVT 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 expertise in high-efficiency DC/DC conversion.

The TPS61322 family was engineered for ultra-low-power, battery-critical applications-including single-cell alkaline/NiMH/Li-ion systems-where quiescent current, small solution size, and fixed-output simplicity are primary design constraints.

FAQ

What is the fixed output voltage of the TPS613222ADBVT?

The TPS613222ADBVT provides a factory-trimmed fixed output voltage of 5.0 V with ±3% accuracy over the full operating temperature range (–40°C to +125°C). This eliminates the need for external feedback resistors and simplifies design for USB OTG, HDMI, and other 5-V rail applications. The 5-V setting is specific to the "22" variant suffix and is not adjustable via external components.

Does the TPS613222ADBVT support external Schottky diode enhancement?

Yes, the TPS613222ADBVT supports an external Schottky diode connected between SW and VOUT pins to increase sustained output current beyond the internal FET's capability. With this configuration, it delivers >500 mA continuously at 3-V input to 5-V output-enabling compliance with USB 2.0 power delivery requirements. The internal high-side FET remains active, and the diode shares current to reduce thermal stress.

What package type and pin count does the TPS613222ADBVT use?

The TPS613222ADBVT is supplied in a 5-pin SOT-23 (DBV) package measuring 2.9 mm × 1.6 mm. Its pinout is: Pin 1 = NC, Pin 2 = SW, Pin 3 = NC, Pin 4 = GND, Pin 5 = VOUT. The two NC pins simplify layout routing and improve manufacturability; they must not be soldered to signal traces but may be grounded for EMI reduction.

What is the minimum input voltage required for startup of the TPS613222ADBVT?

The TPS613222ADBVT requires a minimum of 0.83 V at the VOUT pin to initiate startup (typical), with full operational capability beginning at 0.9 V input. After startup, it continues regulating down to 0.4 V input-enabling full utilization of alkaline, NiMH, and Li-ion cells across their entire discharge curve. This deep dropout capability maximizes usable battery energy.

How does the TPS613222ADBVT achieve high efficiency at light loads?

The TPS613222ADBVT achieves ≥90% efficiency at 10-mA load (1.5-V → 2.2-V) through a combination of 6.5-µA quiescent current, synchronous rectification, and hysteretic current-mode control that naturally transitions to discontinuous conduction mode (DCM) under light loads. This minimizes switching and conduction losses without requiring complex control-loop intervention or external bias networks.