Diodes Incorporated PT7M6136CLTA3EX

Overview

PT7M6136CLTA3EX from Pericom Semiconductor is a precision ultra-low-power voltage detector with 3.6 V threshold, ±1.5% accuracy at 25°C, 0.9 µA supply current at 3 V, and N-channel open-drain active-low reset output in SOT23-3 package. It monitors system supply rails in battery-powered microcontrollers, IoT sensors, and portable medical devices to prevent brownout-induced corruption.

For engineers reviewing the PT7M6136CLTA3EX datasheet, PT7M6136CLTA3EX pinout, PT7M6136CLTA3EX application, or PT7M6136CLTA3EX equivalent, key selection criteria include threshold tolerance over temperature (±2.5% typ), propagation delay (17 µs), hysteresis (5%), and compatibility with 1.2–5.5 V operating range.

Technical Context

The PT7M6136CLTA3EX integrates a precision bandgap reference, comparator, and internally trimmed resistor network to set a fixed 3.6 V detection threshold (VTH−) with 5% hysteresis (VTH+ = 1.05 × VTH−). Its internal architecture eliminates external calibration components while maintaining stability across −40°C to +85°C.

It operates with N-channel open-drain output requiring an external pull-up, enabling flexible logic-level interfacing and wired-OR reset bus configurations. The device asserts reset when VCC falls below 3.6 V and releases only after VCC rises above 3.78 V, preventing chatter during slow-rising supply transitions.

Key Specifications

Pinout & Package

SOT23-3 package (JEDEC MO-178AA compliant), 2.82 × 1.50 × 1.05 mm body, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PT7M6136CLTA3EX, TLV803EB36DBZR offers lower current but lacks hysteresis control, while APX803S-36SA-7 adds timeout functionality at the cost of higher ICC and looser threshold tolerance-making PT7M6136CLTA3EX optimal for ultra-low-power, hysteresis-sensitive designs.

Availability

PT7M6136CLTA3EX is available at Aetrix Electronics and suitable for wearable health monitors, smart meter MCU supervision, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and multi-year battery life.

Supply support for PT7M6136CLTA3EX 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) is a fabless semiconductor company specializing in high-performance timing, interface, and power management solutions for communications and computing markets.

The PT7M61xx series was designed specifically for ultra-low-power voltage monitoring in battery-critical applications, emphasizing precision threshold accuracy, minimal ICC, and robust hysteresis behavior across industrial temperature ranges.

FAQ

What is the exact detection threshold voltage for PT7M6136CLTA3EX?

The PT7M6136CLTA3EX has a nominal detection threshold (VTH−) of 3.6 V, with ±1.5% accuracy at 25°C and ±2.5% typical variation over the full −40°C to +85°C operating range. The hysteresis is fixed at 5%, so the release threshold (VTH+) is 3.78 V.

Can PT7M6136CLTA3EX be used with a 1.8 V supply rail?

Yes - the device operates down to 1.2 V supply, and its 3.6 V threshold remains valid as long as VCC ≥ 1.2 V. However, the monitored rail must be ≥3.6 V for proper detection; it cannot supervise rails below its threshold voltage.

Is an external pull-up resistor required for the RST pin?

Yes - the RST pin is N-channel open-drain, so an external pull-up resistor (typically 10 kΩ to 100 kΩ) is mandatory to establish a defined high state when not asserted. No internal pull-up is provided.

Does PT7M6136CLTA3EX include a reset timeout function?

No - the PT7M6136CLTA3EX provides only voltage-based reset assertion with hysteresis; it does not incorporate a fixed-duration reset timeout. Reset deassertion occurs immediately once VCC exceeds VTH+ (3.78 V), with no minimum pulse-width guarantee.