Texas Instruments TPS22993PRLWR

Overview

TPS22993PRLWR from Texas Instruments is a quad-channel, low-R_ON load switch IC with dual-mode control (GPIO and I²C), designed for power rail sequencing in space-constrained portable electronics. It delivers 1.2A per channel, 15mΩ typical R_ON at 3.3V input (V_BIAS = 7.2V), and programmable slew rate, ON-delay, and quick output discharge - enabling inrush current suppression and controlled power-up in ultrabooks and tablets.

For engineers reviewing the TPS22993PRLWR datasheet, TPS22993PRLWR pinout, TPS22993PRLWR application, or TPS22993PRLWR equivalent, key selection considerations include its 3mm × 3mm WQFN-20 package, 1.0V–3.6V input voltage range per channel, V_BIAS support up to 17.2V, and I²C SwitchALL™ command for synchronized multi-channel control.

Technical Context

The TPS22993PRLWR integrates four independent N-channel MOSFETs with integrated gate drivers, bias supply regulation, and dual-control logic (GPIO-first default with runtime I²C reconfiguration). Its internal architecture includes address decoding for seven unique I²C slave addresses via ADD1/ADD2/ADD3 pins, register-mapped configuration (01h–04h per channel + 05h control register), and dedicated pulldown enable circuitry for QOD.

Control flexibility is achieved through hardware-selectable operation mode: GPIO control uses active-high ON1–ON4 inputs with 1.05V minimum VIH; I²C control supports fast-mode plus (1MHz) with open-drain SDA/SCL, level-shifted interfaces, and SwitchALL™ broadcast command (0x00) to simultaneously enable/disable all channels - critical for coordinated power domain management in multi-rail systems.

Key Specifications

Pinout & Package

TPS22993PRLWR is housed in a 3mm × 3mm, 0.75mm-height WQFN-20 package (RLW suffix) with 0.4mm pitch and exposed thermal pad. Pin 13 is GND; pins 1–5, 11–12, 14–15 are signal I/O; pins 6, 16, 19–20 are address/control; pins 3, 4, 7–10, 17–18 are power/IO terminals. NC pads (pins 1–4 bottom view) are unconnected die attach points.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22975YFPR and TPS22992PRLR, the TPS22993PRLWR uniquely combines quad-channel integration, full I²C configurability including SwitchALL™, and three-address-bit addressing - making it the only option for compact, firmware-efficient, multi-rail sequencing in premium portable platforms.

Availability

TPS22993PRLWR is available at Aetrix Electronics and suitable for ultrabooks, tablets, and all-in-one PCs requiring stable component supply, precise power sequencing, and long-term industrial lifecycle support.

Supply support for TPS22993PRLWR 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 connectivity technologies, with decades of expertise in power management IC design.

The TPS22993PRLWR belongs to TI's high-density load switch product line, engineered specifically for advanced portable computing platforms demanding ultra-low quiescent current, fine-grained slew control, and I²C-based system-level power orchestration.

FAQ

What is the maximum supported V_BIAS voltage for TPS22993PRLWR?

The TPS22993PRLWR supports V_BIAS from 4.5V to 17.2V, with absolute maximum rating of 20V. Operation at 17.2V enables direct connection to fully charged 4S Li-ion batteries (16.8V nominal), eliminating need for auxiliary bias regulators. The device maintains specified R_ON, quiescent current, and thermal performance across this full range, as verified in TI's SLVSCA3A datasheet Section 7.2.

Can TPS22993PRLWR be used with 1.05V input rails?

Yes, the TPS22993PRLWR is fully specified down to 1.05V input (VINx), delivering 15mΩ typical R_ON and supporting 1.2A continuous current. This makes it suitable for modern low-voltage logic rails such as LPDDR4 I/O (1.1V) and ARM core domains. The 1.05V minimum is validated across –40°C to +85°C ambient temperature per Section 7.1 of the datasheet.

Does TPS22993PRLWR require external pull-up resistors on SDA and SCL?

Yes, TPS22993PRLWR's SDA and SCL pins are open-drain and require external pull-up resistors to VDD. TI recommends values based on bus capacitance and target clock speed - e.g., 2.2kΩ for ≤200pF at 1MHz. These resistors must be placed close to the TPS22993PRLWR to minimize noise susceptibility, as detailed in Section 10.1.1.2 of the SLVSCA3A datasheet.

How does the Quick Output Discharge (QOD) function work on TPS22993PRLWR?

When a channel is disabled, TPS22993PRLWR activates an internal pulldown resistor between VOUTx and GND. Four programmable resistance values (110Ω, 483Ω, 949Ω, or disabled) allow tuning of discharge speed and residual current. At 110Ω, a 0.1µF load discharges from 3.3V to 0.1V in <10µs - preventing floating outputs that could cause latch-up in downstream logic, as shown in Figure 27 of the datasheet.

Is TPS22993PRLWR pin-compatible with other devices in the TPS229xx family?

No, TPS22993PRLWR is not pin-compatible with earlier TPS229xx devices. Its WQFN-20 RLW package and 20-pin layout (including three ADD pins, SDA/SCL, and dedicated VDD) differ from smaller packages like WSON-6 (TPS22975) or 16-pin QFN variants. Pin mapping, thermal pad configuration, and power pin placement are unique to the RLW footprint - PCB redesign is required for substitution.