Texas Instruments TPS3707-30DGN

Overview

TPS3707-30DGN from Texas Instruments is a precision 3.0 V supply-voltage supervisor IC with active-low and active-high RESET outputs, fixed 200 ms power-on reset delay, power-fail comparator (PFI/PFO), and manual reset input (MR). It operates from 2 V to 6 V, draws ≤50 µA, and supports –40°C to 85°C ambient. Used for reliable power sequencing in microcontroller-based industrial control systems.

For engineers reviewing the TPS3707-30DGN datasheet, TPS3707-30DGN pinout, TPS3707-30DGN application, or TPS3707-30DGN equivalent, key selection criteria include dual-reset polarity support, 2.63 V threshold accuracy over temperature, MSOP-PowerPAD™ package thermal performance, and absence of watchdog circuitry compared to TPS3705 variants.

Technical Context

The TPS3707-30DGN implements dual-output supervision using an internal 1.25 V reference and resistor-divider-sensed VDD monitoring. Its negative-going threshold (VIT–) is fixed at 2.63 V ±70 mV over –40°C to 85°C, with 50 mV hysteresis to prevent chatter during brownout recovery. The PFI comparator independently monitors auxiliary rails with 1.25 V threshold and 10 mV hysteresis.

Unlike the TPS3705 series, the TPS3707-30DGN omits watchdog timer circuitry (no WDI/WDO pins) and instead provides complementary RESET outputs: one open-drain active-low (pin 7 in SOIC, pin 1 in MSOP-PowerPAD) and one push-pull active-high (pin 8 in SOIC, pin 2 in MSOP-PowerPAD). MR assertion forces both outputs simultaneously.

Key Specifications

Pinout & Package

TPS3707-30DGN is packaged in an 8-pin MSOP-PowerPAD™ (DGN) measuring 3.00 mm × 3.00 mm with exposed thermal pad. This thermally enhanced package delivers R_θJA = 66.1°C/W and R_θJB = 45.1°C/W, enabling higher power density in compact industrial PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3707-30DGN, the TPS3707-30D offers identical supervision functionality in a larger SOIC package with higher thermal resistance, while the MAX706R provides basic reset generation without PFI support or complementary outputs-making it suitable only for simpler, cost-sensitive designs lacking auxiliary monitoring needs.

Availability

TPS3707-30DGN is available at Aetrix Electronics and suitable for industrial programmable controllers, automotive body electronics, portable medical diagnostics, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TPS3707-30DGN 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 TPS370x family was designed specifically for robust power-supply supervision in microprocessor-based systems, emphasizing precision threshold accuracy, low quiescent current, and dual-output flexibility to simplify system-level reset architecture.

FAQ

What is the exact VDD supervision threshold voltage for TPS3707-30DGN?

The TPS3707-30DGN has a guaranteed negative-going input threshold voltage (VIT–) of 2.63 V, with ±70 mV variation over –40°C to 85°C. This corresponds to nominal 3.0 V rail supervision with 12% margin below nominal, ensuring reliable detection of 3.0 V ±5% supply deviations. The value is factory-trimmed and does not require external calibration.

Does TPS3707-30DGN include a watchdog timer function?

No, the TPS3707-30DGN does not include a watchdog timer. Unlike the TPS3705-x series, the TPS3707-30DGN omits WDI and WDO pins and associated timing circuitry. Its feature set focuses exclusively on dual-polarity VDD supervision and independent PFI/PFO monitoring. For watchdog capability, select TPS3705-30DGN instead.

How are the two RESET outputs on TPS3707-30DGN electrically different?

The TPS3707-30DGN provides RESET (pin 1) as an open-drain, active-low output requiring an external pull-up resistor, and RESET (pin 2) as a push-pull, active-high output capable of driving logic-high directly. Both outputs assert synchronously during power-on, brownout, or MR activation, enabling simultaneous reset of mixed-signal subsystems with differing input requirements.

Can the PFI input of TPS3707-30DGN monitor voltages other than the main VDD rail?

Yes, the PFI input is independent of VDD and can monitor any DC voltage source via an external resistor divider. With a fixed 1.25 V internal reference, PFI triggers PFO when the divided voltage falls below 1.25 V ±50 mV. For example, a 12 V battery rail can be scaled using 910 kΩ/120 kΩ resistors to produce 1.25 V at PFI when battery reaches 10.73 V, enabling programmable low-battery warnings.

What is the thermal performance advantage of the MSOP-PowerPAD™ package used by TPS3707-30DGN?

The MSOP-PowerPAD™ (DGN) package of the TPS3707-30DGN achieves R_θJB = 45.1°C/W and R_θJA = 66.1°C/W - significantly lower than the SOIC (D) variant's 58.5°C/W and 118.2°C/W respectively. This 43% reduction in junction-to-board resistance allows higher sustained power dissipation in compact layouts, making it ideal for thermally dense industrial PCBs where airflow is limited.