Diodes Incorporated PT7M6134NLTA3EX

Overview

PT7M6134NLTA3EX from Pericom Semiconductor is a precision ultra-low-power voltage detector with 3.4V threshold (±1.5% at 25°C), N-channel open-drain active-low reset output, and 17µs propagation delay. It operates from 1.2V to 5.5V supply, consumes only 0.9µA at 3V, and features 5% internal hysteresis for noise immunity in battery monitoring and power sequencing circuits.

For engineers reviewing the PT7M6134NLTA3EX datasheet, PT7M6134NLTA3EX pinout, PT7M6134NLTA3EX application, or PT7M6134NLTA3EX equivalent, key selection criteria include threshold accuracy over temperature (±2.5% typ), SOT23-3 package compatibility, open-drain drive capability (1mA sink), and support for 1.8–5.0V detection in 100mV steps.

Technical Context

This device integrates a precision bandgap reference, comparator, and internally trimmed resistor network to set VTH− = 3.4V with VTH+ = 3.57V (1.05×VTH−). Its internal 5% hysteresis prevents false resets during slow-rising or noisy supply transitions.

The N-channel open-drain output requires an external pull-up and asserts low when VCC falls below VTH−, remaining asserted until VCC rises above VTH+. Propagation delay is tightly specified at 17µs typical, with timeout period up to 200µs.

Key Specifications

Pinout & Package

SOT23-3 package (JEDEC MO-178AA compliant), 2.9mm × 1.3mm footprint, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Availability

PT7M6134NLTA3EX is available at Aetrix Electronics and suitable for battery management systems, industrial control units, and automotive body electronics requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PT7M6134NLTA3EX 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

Pericom Semiconductor (now part of Diodes Incorporated) specializes in high-performance analog and mixed-signal ICs for timing, connectivity, and power management.

The PT7M61xx series was designed specifically for ultra-low-power voltage supervision in space-constrained, battery-sensitive applications across consumer, industrial, and automotive markets.

FAQ

What is the exact detect voltage threshold and tolerance for PT7M6134NLTA3EX?

The PT7M6134NLTA3EX has a nominal detection threshold (VTH−) of 3.4V with ±1.5% accuracy at 25°C and ±2.5% typical over the full −40°C to +85°C operating range. This is confirmed by Table 1 in the datasheet where "34" suffix maps to 3.4V, and DC Electrical Characteristics specify the tolerance bands.

Does PT7M6134NLTA3EX require an external pull-up resistor on the RST pin?

Yes - the RST pin is an N-channel open-drain output and must be pulled up externally to a valid logic-high voltage (e.g., 3.3V or 5V). The datasheet recommends RL between 1kΩ and 510kΩ; typical designs use 10kΩ to balance speed and current consumption.

Can PT7M6134NLTA3EX operate reliably below 1.8V supply?

Yes - it functions down to 1.2V supply (per Maximum Ratings and DC Electrical Characteristics), though detection accuracy degrades slightly below 1.8V. The 3.4V threshold remains valid as long as VCC ≥ 1.2V, enabling use in deep-discharge monitoring of single-cell lithium systems.

How does the internal hysteresis affect reset release behavior?

The internal hysteresis sets VTH+ = 1.05 × VTH− = 3.57V. RST remains low until VCC rises above 3.57V, preventing oscillation during slow or noisy supply recovery. This eliminates need for external hysteresis components and improves system robustness in electrically harsh environments.