Diodes Incorporated PT7M6122CLTA3EX

Overview

PT7M6122CLTA3EX from Diodes Incorporated is a low-power, precision voltage detector IC with 2.2V threshold, ±1.5% accuracy at 25°C, 1μA supply current at 3.6V, and N-channel open-drain active-low reset output in SOT23-3 package. It monitors battery or system supply voltage in portable electronics, microcontroller power-up sequencing, and industrial sensor nodes.

For engineers reviewing the PT7M6122CLTA3EX datasheet, PT7M6122CLTA3EX pinout, PT7M6122CLTA3EX application, or PT7M6122CLTA3EX equivalent, key selection criteria include detection accuracy over temperature (±2.5% typ), 17μs propagation delay, 1.2V–5.5V operating range, and hysteresis configuration (5% standard).

Technical Context

This device integrates a precision bandgap reference, comparator, and internally trimmed resistor network to set a fixed 2.2V detection threshold (VTH−) with VTH+ = 1.05 × VTH−, delivering 3–4.5% hysteresis. It operates across −40°C to +85°C without external components.

The N-channel open-drain output drives low when VCC falls below VTH− and remains asserted until VCC rises above VTH+, enabling direct interface with microcontroller reset inputs or logic-level control circuits requiring active-low assertion.

Key Specifications

Pinout & Package

PT7M6122CLTA3EX is housed in a lead-free, RoHS-compliant SOT23-3 (TA3) package measuring 2.9mm × 1.3mm × 1.0mm, optimized for space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB22DBZR and APX803S-22SA-7, PT7M6122CLTA3EX offers optimal balance of accuracy (±1.5%), ultra-low ICC (1.0μA), and open-drain flexibility-making it ideal for cost-sensitive, battery-critical designs where external pull-up is acceptable.

Availability

PT7M6122CLTA3EX is available at Aetrix Electronics and suitable for battery-powered IoT sensors, industrial PLC modules, and USB-C power delivery subsystems requiring stable component supply and long-term manufacturability.

Supply support for PT7M6122CLTA3EX 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The PT7M61xx series targets ultra-low-power system monitoring applications, delivering precision voltage detection with minimal bill-of-materials impact and no external calibration requirements.

FAQ

What is the exact detection threshold voltage and its tolerance for PT7M6122CLTA3EX?

The PT7M6122CLTA3EX has a nominal detection threshold (VTH−) of 2.2V with ±1.5% accuracy at 25°C and ±2.5% over the full −40°C to +85°C operating range. The hysteresis is fixed at 5%, so VTH+ = 2.31V (1.05 × 2.2V), ensuring clean release without oscillation during supply recovery.

Can PT7M6122CLTA3EX drive a microcontroller reset pin directly?

Yes-the N-channel open-drain RST output can directly interface with most MCU reset pins when paired with an external pull-up resistor (typically 10kΩ to VCC or IOVDD). It sinks up to 20mA, exceeding standard MCU reset input leakage requirements, and operates across the full 1.2V–5.5V supply range.

How does the 17μs propagation delay impact system reliability?

The 17μs typical propagation delay ensures rapid response to supply faults-well within the hold-time requirements of modern MCUs (often >100μs). This allows the reset signal to assert before internal registers destabilize, preventing undefined states, memory corruption, or peripheral lockup during brown-out conditions.

Is PT7M6122CLTA3EX compatible with lead-free reflow processes?

Yes-PT7M6122CLTA3EX is RoHS-compliant and rated for standard lead-free reflow profiles (J-STD-020, peak temperature 260°C). Its SOT23-3 (TA3) package is qualified for both SnPb and Pb-free assembly, with moisture sensitivity level (MSL) 1 and unlimited floor life under dry pack conditions.