Texas Instruments TPS2095D

Overview

TPS2095D from Texas Instruments is a quad-channel high-side power-distribution switch featuring four independent 80-mΩ N-channel MOSFETs, 250 mA continuous current per channel, 2.7-V to 5.5-V operating range, and integrated thermal/short-circuit protection with open-drain overcurrent outputs - used in USB peripheral power management and hot-plug module control.

For engineers reviewing the TPS2095D datasheet, TPS2095D pinout, TPS2095D application, or TPS2095D equivalent, key selection criteria include per-channel current rating, enable logic polarity (active-high for EN1/EN3, active-low for EN2/EN4), SOIC-16 thermal derating (584 mW at 85°C), and dual thermal trip behavior enabling fault isolation without system-wide shutdown.

Technical Context

The TPS2095D implements four independent high-side switches with internal charge-pump gate drive enabling full enhancement down to 2.7 V input; each channel features dedicated enable inputs with CMOS/TTL compatibility and independent overcurrent sensing via sense-FET architecture.

It employs dual thermal trip points (≈140°C primary, ≈160°C secondary) to isolate individual faulty channels while maintaining operation of unaffected outputs; undervoltage lockout (≈2 V threshold) ensures controlled startup and prevents erratic switching during brownout conditions.

Key Specifications

Pinout & Package

TPS2095D is housed in a 16-pin SOIC (D) package with exposed pad not specified; thermal resistance θJA = 111°C/W. Pin functions are validated per TI SLVS245C datasheet Section 5 (Terminal Functions).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad high-side power switch applications.

Compared with TPS2095D, TPS2097D offers identical protection and performance but with uniform active-low enables, while TPS2054D sacrifices channel independence and thermal granularity for lower cost - making TPS2095D optimal for robust, multi-rail hot-plug systems requiring selective fault containment.

Availability

TPS2095D is available at Aetrix Electronics and suitable for USB peripheral power distribution, hot-pluggable I/O modules, and industrial sensor node power gating requiring stable component supply across extended production lifecycles.

Supply support for TPS2095D 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The TPS209x family was designed specifically for robust, fault-tolerant power distribution in hot-plug and high-capacitance-load environments - emphasizing per-channel protection, controlled slew rates, and wide-input-voltage operation.

FAQ

What is the maximum continuous current per channel for the TPS2095D?

The TPS2095D supports 250 mA continuous current per channel under recommended operating conditions (TA ≤ 85°C, VI(IN) = 2.7 V to 5.5 V). This rating is sustained with proper PCB thermal design and accounts for SOIC-16 package derating - exceeding this value risks thermal shutdown activation or long-term reliability degradation.

Does the TPS2095D support bidirectional current flow?

No, the TPS2095D is a unidirectional high-side switch configured to block reverse current (from OUT to IN). Its N-channel MOSFET topology and internal driver ensure forward conduction only - preventing backfeed from powered downstream loads into the source rail, which is critical for system-level power domain integrity.

How does the TPS2095D handle overcurrent events?

Upon overcurrent detection, the TPS2095D enters constant-current mode, limiting output to ≈0.5 A while reducing output voltage - protecting upstream supplies and wiring. Simultaneously, the corresponding OCA or OCB pin pulls low. If thermal limits are exceeded, the affected channel shuts off independently while others remain operational due to dual thermal trip architecture.

What is the function of GNDA and GNDB pins on the TPS2095D?

GNDA serves as the ground reference for Switches 1 and 2 (IN1/IN2, OUT1/OUT2, EN1/EN2, OCA), while GNDB serves Switches 3 and 4 (IN3/IN4, OUT3/OUT4, EN3/EN4, OCB). This separation minimizes ground bounce coupling between channel pairs and improves noise immunity in mixed-signal or high-EMI environments.

Can the TPS2095D be used with a 3.3 V supply?

Yes, the TPS2095D operates fully across 2.7 V to 5.5 V, including 3.3 V nominal rails. At 3.3 V, its typical rDS(on) is 90 mΩ (25°C), delivering 250 mA with <235 mV dropout - sufficient for powering 3.3 V peripherals while maintaining thermal margin within SOIC-16 limits when ambient temperature remains ≤85°C.