Diodes Incorporated PT7M6126CLC4EX

Overview

PT7M6126CLC4EX from Diodes Incorporated is a precision ultra-low-power voltage detector with 2.6V threshold, ±1.5% accuracy at 25°C, 1μA supply current at 3.6V, and N-channel open-drain active-low reset output. It operates from 1.2V to 5.5V supply and supports -40°C to +85°C industrial temperature range. Used for battery voltage monitoring and microcontroller reset supervision in portable and embedded systems.

For engineers reviewing the PT7M6126CLC4EX datasheet, PT7M6126CLC4EX pinout, PT7M6126CLC4EX application, or PT7M6126CLC4EX equivalent, key selection criteria include detection threshold tolerance over temperature (±2.5% typ), propagation delay (17µs), hysteresis (5%), output configuration (open-drain, active-low), and SC70-4 package compatibility with space-constrained PCB layouts.

Technical Context

The PT7M6126CLC4EX integrates a precision bandgap reference, comparator, and internally trimmed resistor network to set a fixed 2.6V detection threshold (VTH−) with 5% hysteresis (VTH+ = VTH− × 1.05). Its internal hysteresis eliminates oscillation during slow-rising/falling supply transitions.

It uses an N-channel open-drain output stage requiring an external pull-up resistor, enabling flexible logic-level interfacing and wired-OR reset bus configurations. The device asserts RST low when VCC falls below 2.6V and releases it only after VCC rises above 2.73V (2.6V × 1.05), ensuring clean power-on reset sequencing.

Key Specifications

Pinout & Package

PT7M6126CLC4EX is packaged in SC70-4 (SOT343) - a 1.3mm × 1.3mm, 0.95mm height, 4-pin surface-mount package with 0.65mm pitch and exposed pad for thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB26DBVR and APX803L26-26SA-7, PT7M6126CLC4EX offers tighter threshold accuracy (±1.5% vs. ±2–2.5%), SC70-4 package for improved routing density, and guaranteed 5% hysteresis without external components - making it optimal for high-reliability, space-limited industrial and medical applications.

Availability

PT7M6126CLC4EX is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home door locks, and automotive body control modules requiring stable component supply across extended product lifecycles.

Supply support for PT7M6126CLC4EX 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 ICs, specializing in high-performance, high-reliability components for power management, signal integrity, and protection applications.

The PT7M61xx series was designed specifically for ultra-low-power voltage monitoring in battery-operated and energy-sensitive systems, delivering precision reset functionality without external passive components.

FAQ

What is the function of the NC pin on PT7M6126CLC4EX?

The NC (No Connect) pin on PT7M6126CLC4EX is internally unconnected and serves no electrical function. It may be left floating or tied to GND for mechanical stability and improved solder joint reliability during reflow. Do not connect it to VCC or any active signal, as this violates the device's absolute maximum ratings and may cause latch-up or parametric shift.

Can PT7M6126CLC4EX be used with a 1.8V supply rail?

Yes - PT7M6126CLC4EX operates down to 1.2V supply voltage and is fully specified at 1.8V. At 1.8V, its 2.6V detection threshold remains valid because the device monitors VCC itself; however, the monitored rail must be ≥2.6V for detection to occur. It cannot detect below its own threshold, so it is unsuitable for supervising 1.8V rails - use PT7M6118CLC4EX instead.

How does the 5% hysteresis affect reset release timing?

The 5% hysteresis means the device releases RST only when VCC rises above 2.73V (2.6V × 1.05), not just back to 2.6V. This 130mV window prevents repeated toggling during slow or noisy supply recovery, ensuring one clean reset pulse per brown-out event. Propagation delay remains 17µs for both assertion and release edges.

Is PT7M6126CLC4EX RoHS-compliant and halogen-free?

Yes - the "E" suffix in PT7M6126CLC4EX denotes Diodes Incorporated's standard green, lead-free, and halogen-free construction. It complies with RoHS Directive 2011/65/EU and JEDEC JS709B, with all homogeneous materials tested to <900 ppm bromine and <900 ppm chlorine limits.