Texas Instruments TPS2064CDGN

Overview

TPS2064CDGN from Texas Instruments is a dual-channel, 1.5-A current-limited power-distribution switch in an 8-pin MSOP package. It features high-side N-channel MOSFETs with 70 mΩ typical on-resistance, ±20% current-limit tolerance, fast 2 µs overcurrent response, and built-in soft-start. Designed for USB ports and bus-powered hubs, it delivers controlled power switching with reverse-current blocking and deglitched fault reporting.

For engineers reviewing the TPS2064CDGN datasheet, TPS2064CDGN pinout, TPS2064CDGN application, or TPS2064CDGN equivalent, key selection criteria include its 1.5-A per-channel current limit, active-high enable logic, output discharge capability, thermal shutdown at 135°C, and compatibility with 4.5 V to 5.5 V input rails in space-constrained USB host designs.

Technical Context

The TPS2064CDGN integrates two independent high-side power switches with precise current limiting and fault management. Each channel operates in constant-current mode during overload or short-circuit events, maintaining predictable fault current without latch-off. Its enable inputs are active-high, and fault outputs (FLT1/FLT2) are active-low open-drain signals with 7–13 ms deglitch timing.

Thermal protection activates at 135°C junction temperature with 20°C hysteresis, and reverse-current blocking prevents backflow when output voltage exceeds input. The device supports soft-start via internal slew-rate control, limiting inrush current into capacitive loads up to 150 µF.

Key Specifications

Pinout & Package

TPS2064CDGN uses an 8-pin MSOP (DGN) package measuring 3.00 mm × 3.00 mm with exposed PowerPAD™ for thermal dissipation. The PowerPAD™ must be soldered to a GND plane for optimal thermal performance (R_θJB = 60.7°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2064C (SOIC) and TPS2064C-2 (MSOP, no discharge), the TPS2064CDGN offers optimal balance of compact size, thermal performance via PowerPAD™, and integrated output discharge - making it the preferred choice for space-constrained, hot-plug-compliant USB designs.

Availability

TPS2064CDGN is available at Aetrix Electronics and suitable for USB host ports, docking stations, and set-top box peripheral interfaces requiring stable component supply, consistent parametric performance, and long-term industrial availability.

Supply support for TPS2064CDGN 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 consumer markets.

The TPS20xxC family was designed specifically for USB-compliant power distribution, addressing heavy capacitive loads and short-circuit transients with predictable current limiting and robust fault handling.

FAQ

What is the maximum continuous current per channel for the TPS2064CDGN?

The TPS2064CDGN supports a maximum continuous output current of 1.5 A per channel under recommended operating conditions (4.5 V to 5.5 V input, –40°C to 85°C ambient). Its current-limit threshold is specified at 1.83 A (min), 2.29 A (typ), and 2.75 A (max) across temperature, with ±20% tolerance ensuring predictable foldback behavior during overload events. This rating applies independently to each of the two channels in the TPS2064CDGN.

Does the TPS2064CDGN include output discharge functionality?

Yes, the TPS2064CDGN includes integrated output discharge. When disabled, internal pulldown resistors (400–600 Ω typical) actively discharge the OUT1 and OUT2 nodes to GND, preventing floating voltages that could cause ESD issues or misbehavior in hot-plug scenarios. This feature distinguishes it from the TPS2064C-2 variant and is confirmed in TI's device information table for the TPS2064C part number.

What is the enable logic polarity for the TPS2064CDGN?

The TPS2064CDGN uses active-high enable logic on both EN1 and EN2 pins. A logic high voltage ≥2 V (with hysteresis of 0.14 V) turns on the respective channel, while ≤0.8 V disables it. This differs from some other TPS20xxC variants like TPS2062C (active-low enable), and is explicitly documented in the "Device Information" table and "Pin Functions" section of the SLVSAX6H datasheet for TPS2064CDGN.

How does the TPS2064CDGN handle short-circuit faults?

The TPS2064CDGN responds to short-circuits with a 2 µs typical overcurrent detection time, entering constant-current limiting mode to cap fault current at ~2.3 A (min) to ~2.8 A (max). FLT1 or FLT2 asserts low (open-drain) after a 7–13 ms deglitch period to reject noise. If thermal shutdown activates at 135°C, the device latches off until junction cools by 20°C hysteresis - all behavior is fully characterized in the SLVSAX6H datasheet for TPS2064CDGN.

What package type and thermal characteristics apply to the TPS2064CDGN?

The TPS2064CDGN is supplied in an 8-pin MSOP (DGN) package with a 3.00 mm × 3.00 mm body and exposed PowerPAD™. Its junction-to-board thermal resistance is 60.7°C/W, and junction-to-ambient is 57.2°C/W when mounted per JEDEC standards. The PowerPAD™ must be soldered to a GND plane to achieve these ratings - confirmed in Section 7.4 of the SLVSAX6H datasheet specific to the DGN variant of TPS2064CDGN.