Texas Instruments TPS2052BDGN

Overview

TPS2052BDGN from Texas Instruments is a dual-channel, current-limited power-distribution switch featuring two 70mΩ high-side N-channel MOSFETs, 500mA continuous per channel, 2.7V–5.5V input operation, and integrated thermal/short-circuit protection. It serves as a smart load switch in USB-powered peripherals and portable electronics requiring controlled hot-swap capability.

For engineers reviewing the TPS2052BDGN datasheet, TPS2052BDGN pinout, TPS2052BDGN application, or TPS2052BDGN equivalent, key selection criteria include per-channel current limit accuracy (0.75A–1.25A), rise time (0.6ms typical), undervoltage lockout (2.0–2.6V), standby current (≤1μA), and HVSSOP-8 package compatibility with space-constrained PCB layouts.

Technical Context

The TPS2052BDGN implements independent enable-controlled channels with internal charge-pump gate drive to ensure consistent 0.6ms rise time across 2.7V–5.5V supply range, eliminating external components. Each channel operates autonomously: EN1/EN2 are active-high logic inputs controlling OUT1/OUT2 respectively.

Overcurrent detection uses deglitched OC1/OC2 open-drain outputs that assert low during sustained overload (>4ms) or short circuit, while thermal shutdown activates at 135°C junction temperature and recovers automatically at 125°C - both functions operate independently per channel without cross-talk.

Key Specifications

Pinout & Package

HVSSOP-8 package (3.0mm × 3.0mm body, 0.65mm pitch), thermally enhanced with exposed PowerPAD™ connected to GND for improved heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2042BDGN, the TPS2052BDGN provides active-high enable logic simplifying microcontroller interface, while TPS2052DRBT offers better thermal performance in SON-8 - both alternatives retain identical current-limit accuracy, UVLO, and fault reporting behavior.

Availability

TPS2052BDGN is available at Aetrix Electronics and suitable for USB peripheral protection, portable medical sensor hubs, and industrial I/O modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS2052BDGN 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The TPS20xxB family was designed specifically for robust power distribution in systems with heavy capacitive loads and frequent short-circuit exposure - targeting USB, portable, and industrial edge devices.

FAQ

What is the maximum continuous current rating per channel for the TPS2052BDGN?

The TPS2052BDGN supports 500mA continuous current per channel under recommended operating conditions (TJ ≤ 125°C, VI(IN) = 2.7V–5.5V). This rating is validated across the full –40°C to 85°C ambient temperature range and accounts for thermal derating in the HVSSOP-8 package. Exceeding this value risks triggering current-limit mode or thermal shutdown.

Does the TPS2052BDGN require external components for gate drive or current sensing?

No, the TPS2052BDGN integrates a charge-pump gate driver that fully enhances its internal 70mΩ N-channel MOSFETs down to 2.7V input, eliminating external boost capacitors. It also embeds accurate current-limit circuitry and deglitched OC reporting - no external sense resistors, comparators, or RC filters are needed for basic protection functionality.

How does the undervoltage lockout (UVLO) function in the TPS2052BDGN?

The TPS2052BDGN activates UVLO when input voltage falls below 2.0V (min) to 2.6V (max), holding both channels disabled until VI(IN) rises above the threshold plus 75mV hysteresis. This prevents erratic switching or partial turn-on during brownout conditions, ensuring clean power-up sequencing and protecting downstream loads from unstable rail voltages.

Can the TPS2052BDGN be used in ganged configuration for higher current applications?

Yes - the TPS2052BDGN is UL recognized (File E169910) for ganged operation, allowing parallel connection of OUT1 and OUT2 to deliver up to 1A total current. However, current sharing is not actively balanced; designers must ensure matched trace impedance and thermal coupling to avoid uneven loading. Ganging requires tying EN1 and EN2 together and using a single OC output or OR-ing OC1/OC2 externally.

What is the thermal performance difference between TPS2052BDGN and TPS2052DRBT?

The TPS2052DRBT (SON-8) has a junction-to-board thermal resistance (RθJB) of 14.2°C/W, significantly lower than the TPS2052BDGN's 35.5°C/W (HVSSOP-8). This means the DRBT package dissipates heat more efficiently into the PCB, enabling ~2.5× higher continuous power handling before reaching thermal shutdown - critical for high-ambient or high-duty-cycle applications.