Texas Instruments LM3710XKBP-463

Overview

LM3710XKBP-463 from Texas Instruments is a microprocessor supervisory IC in VSSOP-10 package, providing precision 3.08V reset threshold, 28 µA supply current, manual reset input (MR), power-fail comparator (PFI/PFO), low-line output (LLO), and watchdog timer (WDI) - used for reliable power monitoring in embedded controllers and automotive systems.

For engineers reviewing the LM3710XKBP-463 datasheet, LM3710XKBP-463 pinout, LM3710XKBP-463 application, or LM3710XKBP-463 equivalent, key selection criteria include reset accuracy (±0.5% at 25°C), guaranteed reset assertion down to 1.0V VCC, factory-programmable timeout delays, and dual-supply monitoring capability via PFI and LLO.

Technical Context

The LM3710XKBP-463 integrates five independent monitoring functions: a precision voltage detector with 3.08V reset threshold and ±0.5% room-temperature accuracy; a 1.225V PFI comparator for external supply monitoring; an LLO comparator set at 1.02×VRST for early brownout warning; a debounced MR input with 56 kΩ internal pull-up; and a transition-sensitive WDI watchdog with programmable timeout periods (e.g., 6.2 ms, 102 ms, 1600 ms).

Its active-low RESET output remains asserted during VCC < 3.08V, MR < 1.225V, or WDI timeout - with tRP reset timeout periods selectable by part suffix ('463' corresponds to 1.4 ms typical). All logic outputs (RESET, PFO, LLO) are open-drain, supporting flexible interface to µP NMI/interrupt lines or external pull-ups.

Key Specifications

Pinout & Package

VSSOP-10 (DGS) package: 3.0 mm × 3.0 mm body, 0.5 mm pitch, 1.1 mm max height, lead-free Sn finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3808G33DBVR and MAX6326UT31D3+T, the LM3710XKBP-463 uniquely combines 3.08V precision reset, PFI-based auxiliary supply monitoring, LLO early-warning output, and WDI watchdog in one VSSOP-10 device - enabling comprehensive power supervision without additional ICs.

Availability

LM3710XKBP-463 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply, long-term lifecycle support, and guaranteed reset accuracy over temperature.

Supply support for LM3710XKBP-463 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 with emphasis on reliability, precision, and industrial-grade performance.

The LM3710XKBP-463 belongs to TI's microprocessor supervisory circuit family, designed specifically for fail-safe power monitoring in battery-backed, automotive, and mission-critical embedded systems where deterministic reset behavior and multi-rail visibility are essential.

FAQ

What is the reset threshold voltage of the LM3710XKBP-463?

The LM3710XKBP-463 has a factory-set reset threshold of 3.08V with ±0.5% accuracy at 25°C and ±2% over −40°C to +85°C. This precise threshold ensures consistent reset activation across operating conditions and eliminates need for external trimming components in the LM3710XKBP-463 design.

Does the LM3710XKBP-463 support watchdog functionality?

Yes, the LM3710XKBP-463 includes a watchdog timer with WDI input that monitors µP output transitions. If no edge occurs within the programmed timeout period (6.2 ms for suffix '463'), it asserts RESET. The LM3710XKBP-463 watchdog is fully integrated - no external RC network or clock source is required.

How does the LLO output function in the LM3710XKBP-463?

The LLO output in the LM3710XKBP-463 is an open-drain early-warning signal that goes low when VCC falls below 1.02 × VRST (≈3.14V). It provides a non-maskable interrupt to the µP approximately 2% before the main reset threshold is reached, allowing time for data save or controlled shutdown in the LM3710XKBP-463 application.

Can the LM3710XKBP-463 monitor a second power supply?

Yes, the LM3710XKBP-463 includes a dedicated PFI input with a fixed 1.225V comparator threshold. By connecting an external resistor divider from a secondary supply (e.g., 12V battery) to PFI, the LM3710XKBP-463 generates a PFO low signal when that supply drops below the threshold - enabling true dual-rail supervision in one device.

What package type is used for the LM3710XKBP-463?

The LM3710XKBP-463 is supplied in a VSSOP-10 (DGS) package: 3.0 mm × 3.0 mm body, 0.5 mm pin pitch, 1.1 mm maximum height, lead-free Sn finish, and JEDEC MO-187 compliant. This compact, surface-mount package supports high-density PCB layouts while maintaining thermal and electrical performance required for the LM3710XKBP-463's supervisory functions.