Texas Instruments TPS259630DDAR

Overview

TPS259630DDAR from Texas Instruments is a 2.7–19 V, 0.125–2-A adjustable eFuse with 89-mΩ on-resistance, fast 1.3-μs overvoltage lockout response, and accurate current monitoring (±5.5% at 1 A). It integrates undervoltage lockout, slew-rate control, thermal shutdown, and fault indication for robust power path protection in energy meters and UL 60335-1 appliance LPCs.

For engineers reviewing the TPS259630DDAR datasheet, TPS259630DDAR pinout, TPS259630DDAR application, or TPS259630DDAR equivalent, key selection criteria include adjustable OVLO threshold via resistor divider, latch-off fault behavior, SOIC-8 EP package thermal performance, and ±10.4% current limit accuracy across full 0.125–2-A range.

Technical Context

The TPS259630DDAR implements an integrated N-channel MOSFET with precision current-sense amplifier feeding the ILM pin (656 µA/A typical gain), enabling simultaneous current limiting and real-time load monitoring. Its OVLO circuit uses a dedicated analog input (pin 8) with 1.2-V nominal threshold and 95-mV hysteresis, requiring external resistor divider to set user-defined cutoff voltage.

Unlike TPS25962x variants, this device provides overvoltage lockout-not clamping-and latches off upon fault detection (no auto-retry). Thermal protection triggers at 157°C junction temperature with 11.5°C hysteresis, and dVdt pin (pin 2) controls output slew rate via external capacitor, decoupling turn-on timing from load capacitance.

Key Specifications

Pinout & Package

TPS259630DDAR is housed in an 8-pin SOIC package with exposed thermal pad (DDA), measuring 4.91 mm × 3.9 mm. The exposed pad must be soldered to PCB ground plane for optimal thermal performance (R_θJA = 52.7°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar eFuse applications.

Compared with TPS259631DDAR, TPS259630DDAR offers deterministic latch-off for safety-critical systems, while TPS25942ARNR trades SOIC-8 simplicity for higher performance and digital control-making TPS259630DDAR optimal for cost-sensitive, fixed-function 2-A protection where manual reset is acceptable.

Availability

TPS259630DDAR is available at Aetrix Electronics and suitable for energy metering, UL 60335-1 appliance LPCs, and IP network camera power management requiring stable component supply and long-term industrial availability.

Supply support for TPS259630DDAR 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 specializing in analog, embedded processing, and power management technologies with broad industrial and automotive qualification.

The TPS2596xx family is designed specifically for high-reliability, wide-input-voltage eFuse applications in energy infrastructure, white goods, and professional AV equipment-emphasizing precision current monitoring and sub-microsecond fault response.

FAQ

What is the overvoltage protection mechanism used by the TPS259630DDAR?

The TPS259630DDAR implements adjustable overvoltage lockout (OVLO), not clamping. It monitors input voltage via a resistor divider on the OVLO pin (pin 8) and shuts down the internal FET when the divided voltage exceeds 1.2 V (rising threshold). This latched-off state persists until the EN/UVLO pin is cycled. The TPS259630DDAR does not clamp output voltage like TPS25962x variants.

How do I set the current limit for the TPS259630DDAR?

Set the current limit for the TPS259630DDAR by connecting a resistor (RILM) between the ILM pin (pin 7) and GND. Values from 453 Ω to 7.87 kΩ configure limits from 2 A down to 0.125 A per the formula ILIM ≈ 0.656 V / RILM. The TPS259630DDAR datasheet provides a lookup table correlating resistance to current, with ±10.4% accuracy across the full range.

Does the TPS259630DDAR support adjustable output slew rate control?

Yes, the TPS259630DDAR supports adjustable output slew rate control via the dVdt pin (pin 2). Connecting a capacitor from dVdt to GND slows the output voltage ramp during turn-on, directly limiting inrush current. With no capacitor (pin floating), the device achieves maximum slew rate (e.g., 75.1 V/ms at 12 V input). The TPS259630DDAR's dVdt circuit is internally biased at 2.1 µA, enabling predictable SR tuning.

What is the thermal shutdown behavior of the TPS259630DDAR?

The TPS259630DDAR features thermal shutdown that triggers at 157°C junction temperature and remains latched off until the EN/UVLO pin is toggled. It includes 11.5°C hysteresis, so the device resets only after cooling to ~145.5°C. This latch-off behavior prevents uncontrolled cycling during sustained overload and differs from auto-retry variants like TPS259631DDAR. The exposed thermal pad must be soldered to PCB ground for effective heat dissipation.

Can the TPS259630DDAR be used in UL 60335-1 certified appliances?

Yes, the TPS259630DDAR is explicitly cited in TI's documentation for UL 60335-1 15-W Low Power Converter (LPC) applications in refrigerators, dishwashers, and washing machines. Its latch-off fault response, ±10.4% current limit accuracy, and IEC 61000-4-4 EFT immunity support compliance with Clause 15.3.2 (overcurrent protection) and Clause 15.3.3 (overtemperature protection) when implemented per TI's reference layouts and thermal guidelines.