Texas Instruments TPS3707-50DRG4

Overview

TPS3707-50DRG4 from Texas Instruments is a precision 5-V supply voltage supervisor IC with active-low and active-high reset outputs, power-fail comparator (PFI/PFO), manual reset input (MR), and fixed 200-ms power-on reset delay. It operates from 2 V to 6 V, draws ≤50 µA supply current, and is rated for –40°C to 85°C. It supports reliable system initialization in microcontroller-based industrial control units.

For engineers reviewing the TPS3707-50DRG4 datasheet, TPS3707-50DRG4 pinout, TPS3707-50DRG4 application, or TPS3707-50DRG4 equivalent, this page delivers verified electrical parameters, SOIC-8 and MSOP-PowerPAD package details, functional truth tables, real-world timing behavior, and validated alternative parts for supply-voltage supervision in safety-critical embedded systems.

Technical Context

The TPS3707-50DRG4 implements dual-reset output logic (RESET and RESET) driven by an internal 1.25-V reference and precision resistor divider, enabling accurate 4.55 V threshold detection (V_IT– = 4.45–4.65 V) with 70 mV hysteresis. Its PFI input monitors auxiliary rails (e.g., battery or secondary supply) with 1.2–1.3 V threshold and sub-microsecond propagation delay (0.5–1 µs).

Unlike the watchdog-equipped TPS3705-xx series, the TPS3707-xx family omits WDI/WDO pins and instead provides complementary reset outputs - enabling direct interface with processors requiring both active-low and active-high reset assertion without external inverters.

Key Specifications

Pinout & Package

TPS3707-50DRG4 is available in 8-pin SOIC (D) package (3.90 mm × 4.90 mm) and 8-pin MSOP-PowerPAD (DGN) package (3.00 mm × 3.00 mm). Both packages support thermal dissipation up to 725 mW (SOIC) or 2.14 W (MSOP-PowerPAD) at T_A < 25°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar supply-voltage supervision applications.

Compared with TPS3707-50DRG4, the D-package variant offers identical functionality with reduced thermal performance, while MAX708RCSA+ trades complementary reset capability and lower current for broader legacy availability - making TPS3707-50DRG4 optimal for new designs demanding integrated dual-output supervision and ultra-low power.

Availability

TPS3707-50DRG4 is available at Aetrix Electronics and suitable for industrial programmable controllers, automotive body electronics, and portable medical devices requiring stable component supply, long-lifecycle assurance, and guaranteed traceability.

Supply support for TPS3707-50DRG4 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 communications markets.

The TPS370x-xx product line was engineered specifically for robust, low-power microprocessor supply supervision - emphasizing precision threshold accuracy, dual-output flexibility, and seamless integration into space-constrained embedded systems.

FAQ

What is the exact reset threshold voltage for TPS3707-50DRG4?

The TPS3707-50DRG4 has a guaranteed negative-going input threshold voltage (V_IT–) of 4.45 V (minimum) to 4.65 V (maximum) across –40°C to 85°C. This 5-V nominal supervision point is factory-trimmed and includes 70 mV hysteresis to prevent oscillation during supply droop. The value is specified in Section 7.5 of the SLVS184F datasheet and applies directly to the TPS3707-50DRG4 device.

Does TPS3707-50DRG4 include a watchdog timer?

No, the TPS3707-50DRG4 does not include a watchdog timer. It belongs to the TPS3707-xx series, which replaces the watchdog inputs/outputs (WDI/WDO) found in TPS3705-xx devices with complementary reset outputs (RESET and RESET). The TPS3707-50DRG4 datasheet explicitly states this distinction in Section 8.3.3 and Figure 8-2.

What are the package options and thermal ratings for TPS3707-50DRG4?

The TPS3707-50DRG4 is offered in two packages: SOIC-8 (D, 3.90 mm × 4.90 mm) and MSOP-PowerPAD (DGN, 3.00 mm × 3.00 mm). Thermal resistance values are R_θJA = 118.2°C/W (D) and 66.1°C/W (DGN). Maximum power dissipation at T_A < 25°C is 725 mW (D) or 2.14 W (DGN), per Section 7.9 of the datasheet.

How does the PFI input function in TPS3707-50DRG4?

The PFI input in TPS3707-50DRG4 is a dedicated analog comparator input with a fixed 1.25 V threshold (1.2–1.3 V range). When voltage at PFI drops below this level, the open-drain PFO output pulls low. It is commonly used with a resistor divider to monitor battery or auxiliary rails - e.g., a 12-V supply scaled to 1.25 V using 910 kΩ and 120 kΩ resistors, as shown in Figure 9-1 of the TPS3707-50DRG4 datasheet.

Is TPS3707-50DRG4 pin-compatible with MAX705–MAX708 series?

Yes, the TPS3707-50DRG4 is explicitly stated as pin-for-pin compatible with the MAX705 through MAX708 series in Section 1 of the datasheet. Pin mapping (MR, VDD, GND, PFI, PFO, RESET, RESET, NC) matches exactly in SOIC-8, enabling direct substitution without PCB modification - provided the target application does not require the watchdog functionality present in MAX706/MAX707/MAX708 variants.