TPS22965TDSGRQ1

Texas Instruments TPS22965TDSGRQ1 — Automotive 4‑A, 16‑mΩ Load Switch (8‑WSON, DSG)

The Texas Instruments TPS22965TDSGRQ1 is an AEC‑Q100 qualified, single‑channel load switch designed for compact, low‑voltage automotive power rails. Operating from 0.9 V to 5.5 V and capable of up to 4 A load current, this device integrates a low on‑resistance power path (typical 16 mΩ at 5 V) with a controlled turn‑on slew rate to help mitigate inrush current. Quick Output Discharge (QOD) actively discharges the output when the switch is disabled, supporting clean power‑down of downstream circuits. Housed in a 2 mm × 2 mm 8‑WSON (DSG) package with an exposed thermal pad, the TPS22965TDSGRQ1 is well‑suited for space‑constrained automotive ECUs, infotainment systems, and camera modules.

• Brand: Texas Instruments (TI)
• MPN: TPS22965TDSGRQ1 (series: TPS22965‑Q1)
• Category: PMIC — Load Switches
• Package: 8‑WSON (DSG), 2 mm × 2 mm, exposed pad
• Mounting: Surface mount (SMT)

Links:

• Product page: https://www.ti.com/product/TPS22965-Q1
• Datasheet: https://www.ti.com/lit/ds/symlink/tps22965-q1.pdf

At‑a‑Glance

• Input voltage range: 0.9 V to 5.5 V
• Continuous output current: up to 4 A
• On‑resistance (RON): typ. 16 mΩ at VIN = 5 V
• Turn‑on control: slew‑rate controlled
• Quick Output Discharge (QOD): Yes
• Reverse current blocking: Yes, when disabled
• Enable logic: Active‑high
• Automotive qualification: AEC‑Q100 (Q1)
• Package: 8‑WSON (DSG), 2 mm × 2 mm, exposed pad
• Pin count: 8
• Lifecycle status: Active
• RoHS: RoHS compliant

Notes on unspecified parameters (refer to TI datasheet):

• Operating temperature range: Not specified in datasheet
• Quiescent/shutdown current: Not specified in datasheet
• Turn‑on rise time/slew rate value: Not specified in datasheet
• Current limit/thermal protection: Not specified in datasheet

Why the TPS22965TDSGRQ1 Stands Out in Automotive Power Trees

• Managed inrush for sensitive rails: The device’s controlled turn‑on reduces the surge currents that can trip upstream supplies or cause voltage dips on shared rails—especially important for 1.0 V to 5 V logic, sensor, and processor domains common in modern vehicles.
• Low conduction loss: With a typical 16 mΩ RON at 5 V, the load switch minimizes voltage drop and heat dissipation, improving system efficiency and helping stay within tight rail tolerances.
• Clean power‑down behavior: Integrated QOD discharges the output when disabled, helping ensure deterministic shutdown, faster restart times, and reduced risk of latch‑up on downstream ICs when power is removed.
• Back‑feed protection when off: Reverse current is blocked when the device is disabled, which helps isolate rails during sequencing and prevents unintended back‑powering of upstream supplies. (Behavior when enabled is not specified; consult the datasheet for detailed conditions.)
• Compact, thermally aware footprint: The 2 × 2 mm 8‑WSON with exposed pad supports dense layouts and improved thermal conduction to the PCB—ideal for space‑limited ECUs and camera/ADAS modules.

Typical Applications

• Automotive ECUs and body electronics
• Power rail gating and distribution
• Infotainment head units and instrument clusters
• ADAS and camera modules

These use cases benefit from controlled start‑up, low conduction losses, and robust isolation behavior when the switch is off.

Specifications

Electrical characteristics (from provided data):

• Input voltage range: 0.9 V to 5.5 V
• Continuous output current: up to 4 A
• On‑resistance: typ. 16 mΩ at VIN = 5 V
• Enable logic: active‑high
• Reverse current blocking: yes, when disabled
• Quick Output Discharge: yes
• Turn‑on control: slew‑rate controlled

Mechanical and packaging:

• Package/case: 8‑WSON (DSG), 2 mm × 2 mm, exposed pad
• Mounting: surface mount (SMT)
• Pin count: 8
• Packaging for shipment: Tape & Reel (TR)

Compliance and quality:

• Automotive qualification: AEC‑Q100 (Q1)
• Environmental: RoHS compliant
• Lifecycle: Active (per TI)

Parameters not specified in the provided data (consult the TI datasheet):

• Operating temperature range: Not specified in datasheet
• Quiescent/shutdown current: Not specified in datasheet
• Turn‑on timing/slew‑rate value: Not specified in datasheet
• Current limiting and thermal shutdown: Not specified in datasheet
• Output discharge path resistance: Not specified in datasheet

Design‑In Considerations

Power sequencing and inrush control:

• Place input and output decoupling capacitors close to the device pins to minimize trace inductance and control transient behavior during turn‑on.
• Use the slew‑rate controlled enable to sequence multiple rails; enable the most sensitive rails first or last per your system architecture to avoid cross‑domain disturbances.

Reverse current behavior:

• The TPS22965TDSGRQ1 blocks reverse current when disabled, which helps isolate domains during OFF states and prevents back‑feeding. If reverse isolation is required during ON states, evaluate the system topology and consider additional protection circuitry as appropriate.

Layout and thermal:

• Tie the exposed thermal pad to a solid ground region with multiple thermal vias. This reduces thermal resistance into the PCB and improves reliability under higher load currents.
• Keep the high‑current path short and wide. Route VIN and VOUT with low‑impedance copper and minimize stubs to reduce resistive drop and ringing.

Control interface and logic:

• Enable is active‑high; ensure the controlling logic domain can meet the device’s VIH/VIL levels (not specified here; refer to the datasheet).
• For deterministic shutdown, QOD provides a discharge path when disabled; verify downstream components tolerate the discharge profile of their rail.

Protection and system robustness:

• If your system requires explicit current limiting, fault reporting, or thermal shutdown, confirm these features in the TI datasheet or pair this switch with upstream protection devices as needed. These parameters are not specified in the provided data.

Package, Footprint, and Handling

• Form factor: 2 mm × 2 mm 8‑WSON (DSG) with exposed pad
• Pin count: 8
• Mounting: surface mount
• Shipment: Tape & Reel (TR)

Manufacturing tips:

• Follow TI’s recommended land pattern and reflow profile in the datasheet.
• Use adequate solder mask‑defined pads and via‑in‑pad (filled/capped) as per your assembly capabilities to optimize thermal conduction from the exposed pad into the PCB.
• Moisture sensitivity and storage guidelines should be taken from the TI datasheet; bake and handle per standard SMT practices if required.

Lifecycle, Availability, and Alternates

• Lifecycle status: Active (Texas Instruments)
• Availability: Check authorized distributors for current stock and lead times; automotive‑grade variants may experience demand‑driven lead‑time variability.
• Direct replacements: None listed in the provided data.
• Related family option: TPS22965N‑Q1 is a variant without Quick Output Discharge (QOD). Confirm suitability and any behavioral differences in your design before substitution.
• Alternate sourcing policy: For safety‑relevant or automotive programs, select only AEC‑Q100 qualified devices and validate through PPAP and your organization’s component approval process.

Compliance Summary

• AEC‑Q100: Qualified automotive device (Q1)
• RoHS: Compliant

These certifications support use in automotive applications that demand formal qualification and environmental compliance. Always verify the exact grade level and documentation needed for your program with TI and your quality team.

How It Fits in Your System

The Texas Instruments TPS22965TDSGRQ1 streamlines low‑voltage power distribution in modern vehicles, where microcontrollers, SoCs, sensors, and transceivers share tight power budgets and sequencing rules. Its combination of low RON, controlled turn‑on, and QOD makes it a practical building block for:

• Segmenting multiple rails off a shared supply, enabling or disabling groups on demand to manage standby current.
• Protecting upstream supplies from back‑feed when rails are turned off, improving system integrity during sleep or partial‑power states.
• Ensuring clean startup and shutdown of sensitive digital loads to reduce the risk of data corruption or undefined states.

Because the device sits directly in the power path, careful PCB layout and thermal management are essential for sustained 4 A operation. The compact WSON footprint helps conserve board area in space‑constrained modules, while the exposed pad provides a robust thermal anchor to the PCB.

Frequently Asked Questions (FAQs)

Q: What is the difference between TPS22965‑Q1 and TPS22965N‑Q1?
A: TPS22965‑Q1 includes Quick Output Discharge (QOD) to discharge the output when disabled, while TPS22965N‑Q1 does not include QOD.

Q: Is the device reverse‑current blocking?
A: Yes. Reverse current is blocked when the device is disabled. Refer to the datasheet for specific conditions and limitations.

Q: What input voltage range does the TPS22965TDSGRQ1 support?
A: 0.9 V to 5.5 V.

Q: What is the maximum continuous load current?
A: Up to 4 A, per the provided data. Ensure thermal design and PCB layout can support your specific operating conditions.

Q: What package is the TPS22965TDSGRQ1 available in?
A: 8‑WSON (DSG), 2 mm × 2 mm with an exposed thermal pad.

Q: Is the enable pin active‑high or active‑low?
A: Active‑high enable.

Q: Does the device include controlled turn‑on to mitigate inrush?
A: Yes, the TPS22965TDSGRQ1 features slew‑rate controlled turn‑on.

Q: Is it RoHS compliant and automotive qualified?
A: Yes. It is RoHS compliant and AEC‑Q100 automotive qualified (Q1).

Resources

• Texas Instruments product page: https://www.ti.com/product/TPS22965-Q1
• Texas Instruments datasheet: https://www.ti.com/lit/ds/symlink/tps22965-q1.pdf

If you’re designing an automotive power distribution stage for low‑voltage rails and need a compact, efficient switch with controlled turn‑on and QOD, the Texas Instruments TPS22965TDSGRQ1 is a strong candidate. Verify any parameters not listed here against the TI datasheet and your system requirements, and consult authorized distributors for availability and lead‑time planning.