Texas Instruments TPS22913BYZVT

Overview

TPS22913BYZVT from Texas Instruments is an ultra-small, single-channel load switch IC with integrated P-channel MOSFET, designed for power rail control in space-constrained portable electronics. It delivers 2-A continuous current, 61-mΩ typical on-resistance at 3.3 V input, controlled slew-rate turn-on (66 µs rise time), and full-time reverse current protection with 44-mV threshold - enabling reliable hot-swap and power sequencing in battery-powered systems.

For engineers reviewing the TPS22913BYZVT datasheet, TPS22913BYZVT pinout, TPS22913BYZVT application, or TPS22913BYZVT equivalent, key selection criteria include its active-high enable logic, integrated 150-Ω quick output discharge (QOD), 1.4–5.5 V input range, –40°C to 85°C operation, and 0.9 mm × 0.9 mm wafer-chip-scale package - all critical for low-power, high-density power management designs.

Technical Context

The TPS22913BYZVT implements a controlled-turn-on P-MOSFET with programmable slew rate (66 µs typical VOUT rise time at 3.3 V), preventing inrush current damage during hot-plug events. Its reverse current protection circuit continuously monitors VIN vs VOUT and disables the FET within 10 µs when VOUT exceeds VIN by ≥44 mV - independent of ON pin state.

It integrates a 150-Ω pull-down transistor for rapid output discharge upon turn-off, eliminating residual voltage on downstream capacitors. Under-voltage lockout (UVLO) activates below 0.50 V (rising) / 1.2 V (falling), ensuring stable switching only within valid input voltage range.

Key Specifications

Pinout & Package

TPS22913BYZVT uses a 4-pin wafer-chip-scale package (YZV), 0.9 mm × 0.9 mm, 0.5-mm pitch, 0.5-mm height - optimized for minimal PCB footprint and thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar load switch applications.

Compared with TPS22913CYZVT and TPS22912CYZVT, the TPS22913BYZVT uniquely balances fast (66 µs) controlled turn-on with integrated QOD - making it optimal for applications requiring both rapid power cycling and safe discharge, such as mobile device subsystems with tight timing budgets.

Availability

TPS22913BYZVT is available at Aetrix Electronics and suitable for notebook computers, portable medical equipment, and ultrabook SSD power sequencing requiring stable component supply, consistent wafer-level traceability, and long-term lifecycle support.

Supply support for TPS22913BYZVT 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 high-efficiency, miniaturized systems.

The TPS22913B belongs to TI's ultra-low-profile load switch family, engineered specifically for space-constrained portable electronics needing precise power rail control, reverse current blocking, and fast, safe power cycling without external components.

FAQ

What is the maximum continuous current rating for the TPS22913BYZVT?

The TPS22913BYZVT supports up to 2 A of continuous switch current across its full operating temperature range (–40°C to +85°C). This rating assumes proper PCB thermal design per the datasheet's R_θJA = 189.1°C/W specification and adequate copper area for heat dissipation. Peak pulsed current is rated at 2.5 A for pulses under 300 µs and 2% duty cycle.

Does the TPS22913BYZVT provide reverse current protection when the ON pin is low?

Yes, the TPS22913BYZVT provides full-time reverse current protection regardless of the ON pin state. Its internal comparator continuously monitors VOUT relative to VIN and disables the P-FET within 10 µs if VOUT exceeds VIN by ≥44 mV - even when the device is disabled or unpowered. This prevents backfeed into upstream supplies during hot-swap or fault conditions.

How does the quick output discharge (QOD) function work in the TPS22913BYZVT?

The TPS22913BYZVT integrates a dedicated 150-Ω NMOS pull-down transistor between VOUT and GND. When the ON pin is driven low, this transistor activates, discharging load capacitance rapidly. For example, a 10-µF capacitor discharges to <10% of VOUT in under 150 µs - eliminating floating voltages that could cause latch-up or false wake-ups in downstream circuits.

What is the input voltage threshold for enabling the TPS22913BYZVT?

The TPS22913BYZVT has an active-high ON pin with VIH (high-level input voltage) specified as ≥1.1 V when VIN is 1.4–5.5 V, and ≥0.6 V when VIN is 3.61–5.5 V. It is compatible with 1.2-V, 1.8-V, 2.5-V, 3.3-V, and 5-V GPIO outputs. The pin must never be left floating - it must be actively driven high or pulled low via a resistor or controller.

Can the TPS22913BYZVT operate from a 1.5-V input supply?

Yes, the TPS22913BYZVT operates down to 1.4 V input, making it suitable for single-cell LiFePO₄ or alkaline battery systems. At VIN = 1.5 V, its typical on-resistance is 84 mΩ, resulting in ≤168 mV dropout at 2 A. UVLO remains functional (threshold ~0.50 V rising), and reverse current protection (44 mV VRCP) remains active - ensuring robust behavior across the full 1.4–5.5 V range.