Diodes Incorporated PT7M6123NLC4EX

Overview

PT7M6123NLC4EX from Diodes Incorporated is a precision ultra-low-power voltage detector with 2.3V threshold, ±1.5% accuracy at 25°C, 1μA supply current at 3.6V, N-channel open-drain active-low output, and 17µs propagation delay. It monitors VCC in battery-powered microcontrollers, portable sensors, and power management circuits where reliable brown-out detection is required.

For engineers reviewing the PT7M6123NLC4EX datasheet, PT7M6123NLC4EX pinout, PT7M6123NLC4EX application, or PT7M6123NLC4EX equivalent, key selection criteria include threshold accuracy over temperature (±2.5% max), hysteresis (4.5% typ), operating voltage range (1.2V–5.5V), and SC70-4 package compatibility with space-constrained PCB layouts.

Technical Context

This device implements a precision bandgap reference (1.25V), comparator, and internally trimmed resistor network to set a fixed 2.3V detection threshold (VTH−). Hysteresis is fixed at 4.5% (VTH+ = 1.05 × VTH−), eliminating external components for stable reset assertion/deassertion.

It operates across −40°C to +85°C with guaranteed ±2.5% threshold accuracy over temperature and supports open-drain output drive up to 20mA sink current. Propagation delay is tightly specified at 17µs typical, enabling fast response to supply droop without false triggering.

Key Specifications

Pinout & Package

PT7M6123NLC4EX is housed in a 4-pin SC70 (SOT343) package - compact, surface-mount, lead-free, and RoHS-compliant - with 0.65mm pitch and thermal pad omitted.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB23DBZR and APX803S-23SA-7, PT7M6123NLC4EX delivers tighter threshold accuracy (±1.5%), lower ICC (1.0μA), and known 17μs propagation delay-critical for real-time systems where reset timing predictability outweighs timeout functionality.

Availability

PT7M6123NLC4EX is available at Aetrix Electronics and suitable for wearable health monitors, industrial sensor nodes, smart meter battery backup, and USB-C power delivery adapters requiring stable component supply and long-lifecycle support.

Supply support for PT7M6123NLC4EX 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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with design, manufacturing, and distribution operations across Asia, the Americas, and Europe.

PT7M6123NLC4EX belongs to the PT7M61xx ultra-low-power voltage detector family, engineered for high-accuracy, low-quiescent-current supervision in battery-critical and space-constrained embedded systems.

FAQ

What is the exact detect threshold voltage for PT7M6123NLC4EX?

The PT7M6123NLC4EX has a nominal detection threshold (VTH−) of 2.3V, with ±1.5% accuracy at 25°C and ±2.5% over the full −40°C to +85°C operating range. This value is laser-trimmed during production and does not require external calibration.

Can PT7M6123NLC4EX drive a 10kΩ pull-up resistor directly?

Yes. The N-channel open-drain output can sink ≥1mA at VOL ≤ 0.3V (VCC ≥ 1.2V), supporting standard 10kΩ pull-ups to 1.8V–5V rails. Verified sink capability exceeds 20mA absolute maximum, ensuring robust interface with common logic families.

Is hysteresis adjustable or fixed on this device?

Hysteresis is fixed at 4.5% typical (VTH+ = 1.05 × VTH−) and cannot be adjusted externally. This internal hysteresis eliminates the need for external feedback components while ensuring stable reset release during slow VCC ramp-up.

Does PT7M6123NLC4EX require an external capacitor on the RST line?

No external capacitor is required on the RST line. The device's 17μs propagation delay and internal hysteresis provide sufficient noise immunity for most PCB layouts. A small ceramic capacitor (≤100pF) may be added only if EMI is observed in high-noise environments.