Texas Instruments TPS1101D

Overview

TPS1101D from Texas Instruments is a single P-channel enhancement-mode MOSFET optimized as a high-side load switch for 3-V/5-V battery-powered systems. It features 0.09 Ω typical rDS(on) at VGS = –10 V, –1.5 V maximum VGS(th), TTL/CMOS-compatible input, no external VCC requirement, and ESD protection up to 2 kV per MIL-STD-883C Method 3015. It serves in notebook power distribution and portable device load management.

For engineers reviewing the TPS1101D datasheet, TPS1101D pinout, TPS1101D application, or TPS1101D equivalent, key selection criteria include its SOIC-8 package compatibility, low-threshold gate drive for 3-V logic, high-side switching capability without level-shifting, and thermal performance under continuous 2.3-A drain current at 25°C ambient.

Technical Context

The TPS1101D operates as a high-side switch using P-channel topology, enabling direct connection between battery rail and load with gate driven by microcontroller I/O. Its LinBiCMOS process ensures low leakage (IDSS ≤ 0.5 µA at 25°C) and fast switching (tr = 5.5 ns typical), supporting PWM-controlled power delivery in space-constrained portable designs.

It integrates internal ESD protection on all pins and requires all source terminals to be connected together and all drain terminals tied-reflecting its multi-source/multi-drain SOIC-8 layout. Absolute maximum ratings specify –15 V VDS, –15 V VGS, and 150°C junction temperature, with thermal derating based on RθJA = 158°C/W on FR4 board.

Key Specifications

Pinout & Package

TPS1101D uses the SOIC-8 (D) package: 3.9 mm × 4.9 mm × 1.75 mm body, 1.27 mm pitch, plastic dual in-line with gull-wing leads. Pin 1 is located at top-left corner when notch faces upward.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side P-channel MOSFET switching applications.

Compared with Si2301DS and DMN2053L, the TPS1101D uniquely combines SOIC-8 pin compatibility with multi-source/multi-drain construction, enabling higher current density and legacy design reuse without sacrificing 3-V logic drive or ESD robustness.

Availability

TPS1101D is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, PCMCIA cards, and PDA battery management systems requiring stable component supply and long-term industrial availability.

Supply support for TPS1101D 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, specializing in analog, embedded processing, and digital signal technologies since 1930.

The TPS1101D belongs to TI's LinBiCMOS high-side power switch family, engineered specifically for low-voltage, high-efficiency power distribution in portable battery-operated equipment where size, leakage, and logic compatibility are critical.

FAQ

What is the maximum continuous drain current for TPS1101D at 25°C ambient?

The TPS1101D supports ±2.30 A continuous drain current at TA = 25°C in the SOIC-D package, derating linearly above 25°C based on RθJA = 158°C/W. This rating assumes proper PCB copper area and no forced airflow. At 125°C ambient, the continuous current drops to ±1.04 A per datasheet Section 3.

Does TPS1101D require an external gate driver or level shifter for 3-V microcontroller control?

No, the TPS1101D does not require an external gate driver or level shifter. Its maximum VGS(th) of –1.5 V ensures full enhancement with standard 3-V CMOS/TTL logic high outputs. The device is explicitly designed for direct interface with 3-V microcontrollers, eliminating auxiliary components and saving board space.

How are the multiple source and drain pins configured internally in TPS1101D?

In the TPS1101D, pins 1–4 are internally connected to form a common source node, and pins 6–8 plus pin 1 (shared) are internally connected to form a common drain node. Datasheet Figure D PACKAGE (top view) confirms this layout. All source terminals must be externally shorted, and all drain terminals must be externally shorted to achieve rated current and thermal performance.

What is the thermal resistance (RθJA) of TPS1101D, and how does it affect power dissipation?

The TPS1101D has a junction-to-ambient thermal resistance (RθJA) of 158°C/W when mounted on a standard FR4 board with no special thermal enhancements. This value determines allowable power dissipation: at 25°C ambient, the 791 mW power rating yields a 125°C junction rise. Derating begins above 25°C at 6.33 mW/°C, limiting usable power in high-temperature environments.

Is TPS1101D RoHS compliant and what is its moisture sensitivity level?

Yes, TPS1101D is RoHS compliant (lead finish: NiPdAu) and carries a JEDEC MSL Level-1 rating with unlimited floor life at ≤30°C/60% RH. It is qualified for peak reflow temperatures up to 260°C, making it compatible with standard lead-free soldering processes without baking requirements prior to assembly.