Texas Instruments TPS22924DYZPT

Overview

TPS22924DYZPT from Texas Instruments is a single-channel, 2-A load switch IC featuring an integrated N-channel MOSFET with controlled slew rate, 18.3-mΩ on-resistance at 3.6 V, active-high ON control compatible with 1.2-V to 3.3-V GPIOs, and built-in quick output discharge (1250-Ω pulldown). It operates across 0.75 V to 3.6 V input voltage and targets power rail sequencing in space-constrained portable electronics.

For engineers reviewing the TPS22924DYZPT datasheet, TPS22924DYZPT pinout, TPS22924DYZPT application, or TPS22924DYZPT equivalent, key selection criteria include its ultra-small 0.9 mm × 1.4 mm DSBGA-6 package, 6200-µs rise time for inrush current limiting, sub-5-µA shutdown current, and guaranteed 2-A continuous switching capability over –40°C to 85°C.

Technical Context

The TPS22924DYZPT implements an internal charge pump to fully enhance the NMOS pass FET across its full 0.75–3.6 V input range, enabling low R_ON without external gate drive. Its turn-on timing is internally slew-rate limited to 6200 µs (typ) at 3.6 V, directly suppressing inrush current into large output capacitors.

When disabled, the device activates an integrated 1250-Ω output pulldown transistor that discharges V_OUT to ~10% of VIN before disconnecting-reducing leakage while ensuring rapid rail collapse. Control logic accepts standard CMOS-level ON signals with VIH as low as 0.6 V at VIN ≥ 2.5 V.

Key Specifications

Pinout & Package

TPS22924DYZPT uses a 0.9 mm × 1.4 mm, 0.5-mm pitch, 6-ball DSBGA (YZP) package with bottom-side solder bumps. The package is RoHS-compliant, MSL Level-1, and optimized for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22924DYZPT, TPS22923DYZPT offers cost savings at reduced current capacity, while NIS5020MN3T1G delivers higher current and lower R_ON but sacrifices integration-requiring external soft-start and discharge circuitry and occupying 3× more PCB area.

Availability

TPS22924DYZPT is available at Aetrix Electronics and suitable for smartphone power sequencing, tablet display bias control, portable medical sensor hubs, and POS terminal peripheral interfaces requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS22924DYZPT 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 delivering analog and embedded processing solutions, with leadership in power management, signal chain, and microcontrollers.

The TPS229xx family is designed specifically for ultra-compact, low-leakage, slew-controlled load switching in battery-powered portable electronics-emphasizing space efficiency, inrush mitigation, and seamless GPIO interfacing.

FAQ

What is the maximum continuous current rating for the TPS22924DYZPT?

The TPS22924DYZPT is rated for 2 A maximum continuous switch current across its full operating temperature range of –40°C to 85°C. This rating assumes proper PCB thermal design per the datasheet's R_θJA = 123°C/W specification and adequate copper pour under the DSBGA-6 package. Exceeding 2 A may trigger thermal shutdown or degrade long-term reliability.

Does the TPS22924DYZPT require an external pull-up resistor on the ON pin?

No, the TPS22924DYZPT does not require an external pull-up resistor on the ON pin. Its ON input has CMOS-compatible thresholds and internal logic that interprets voltages ≥0.6 V (at VIN ≥2.5 V) as high. Leaving ON floating is prohibited-TI recommends tying it directly to GND (for default OFF) or to a controlled GPIO, with no external bias needed.

How does the TPS22924DYZPT manage inrush current during turn-on?

The TPS22924DYZPT manages inrush current via an internally fixed slew rate that limits VOUT rise time to 6200 µs (typ) at 3.6 V. This controlled ramp reduces peak inrush to <100 mA for a 100-µF load, eliminating the need for external soft-start circuitry. The rise time varies with input voltage but remains monotonic and predictable across 0.75–3.6 V.

What is the purpose of the 1250-Ω output pulldown in the TPS22924DYZPT?

The 1250-Ω output pulldown in the TPS22924DYZPT actively discharges VOUT to approximately 10% of VIN when the switch is turned off. This prevents the output rail from floating, avoids unintended wake-up of downstream circuits, and ensures clean power-down sequencing. The pulldown automatically disconnects once VOUT reaches threshold, minimizing shutdown current.

Is the TPS22924DYZPT compatible with 1.2-V logic control signals?

Yes, the TPS22924DYZPT is compatible with 1.2-V logic control signals. Its ON pin has a low VIH threshold of 0.9 V minimum at VIN = 0.75–2.49 V and 0.6 V minimum at VIN = 2.5–3.6 V, allowing direct interface with 1.2-V, 1.8-V, 2.5-V, and 3.3-V GPIOs without level shifters. The input leakage is <0.1 µA, minimizing loading on the driving source.