Diodes Incorporated PT7M6248CLTA3EX

Overview

PT7M6248CLTA3EX from Diodes Incorporated is a precision N-channel open-drain voltage detector with 4.8 V threshold (±1.5% at 25°C), 1.0 µA supply current at 3.6 V, and 20 µs propagation delay on VCC rise. It operates from 1.2 V to 5.5 V across –40°C to +85°C and is used for battery undervoltage monitoring in portable medical devices.

For engineers reviewing the PT7M6248CLTA3EX datasheet, PT7M6248CLTA3EX pinout, PT7M6248CLTA3EX application, or PT7M6248CLTA3EX equivalent, key selection criteria include threshold accuracy over temperature, ultra-low quiescent current, open-drain output compatibility with I²C bus pull-ups, and SOT23-3 package footprint constraints.

Technical Context

The PT7M6248CLTA3EX integrates a trimmed bandgap reference, comparator, and internal hysteresis (5% typical) to generate a clean reset signal without external components. Its trip point is defined by VTH+ = 4.8 V (rising edge) and VTH− = 4.59 V (falling edge), with hysteresis calculated as (VTH+ − VTH−)/VTH− × 100%.

It uses an N-channel open-drain output stage requiring external pull-up for active-low reset assertion. The device asserts RST when VCC falls below VTH− and releases it only after VCC rises above VTH+, ensuring noise immunity in noisy power rails.

Key Specifications

Pinout & Package

PT7M6248CLTA3EX is housed in a 3-pin SOT23 (TA3) surface-mount package with gull-wing leads, JEDEC MO-203AA compliant, 1.3 mm × 2.9 mm footprint, and 1.1 mm height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB48DBZR and APX803S-48SA-7, PT7M6248CLTA3EX delivers superior threshold accuracy (±1.5% vs. ±2% or ±2.5%) and lower temperature coefficient, making it preferred for battery-fueled systems where precise end-of-life detection is critical.

Availability

PT7M6248CLTA3EX is available at Aetrix Electronics and suitable for battery management systems, industrial sensor nodes, and portable medical devices requiring stable component supply with guaranteed long-term availability.

Supply support for PT7M6248CLTA3EX 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.

The PT7M62xx series belongs to Diodes' precision voltage supervisor product line, engineered specifically for ultra-low-power, high-accuracy supply monitoring in space-constrained portable and industrial electronics.

FAQ

What is the exact threshold hysteresis value for PT7M6248CLTA3EX?

The PT7M6248CLTA3EX has a nominal hysteresis of 5%, derived from its internal architecture where VTH− = VTH+ / 1.045. At 4.8 V nominal VTH+, this yields VTH− = 4.59 V, resulting in 4.2% actual hysteresis. This fixed ratio eliminates external component dependency while ensuring robust noise rejection.

Can PT7M6248CLTA3EX monitor a 5 V rail directly without a resistor divider?

Yes - PT7M6248CLTA3EX supports direct connection to 5 V rails because its absolute maximum VCC rating is 6.0 V and its operating range extends to 5.5 V. No resistor divider is needed, simplifying layout and reducing BOM count for 5 V systems.

Is the RST pin compatible with 1.8 V logic-level microcontrollers?

Yes - the RST pin is an N-channel open drain with leakage ≤1 µA. When pulled up to 1.8 V, VOL remains ≤0.3 V at 1 mA sink current, meeting standard 1.8 V logic low thresholds. This allows direct interfacing with modern ultra-low-voltage MCUs without level shifters.

Does PT7M6248CLTA3EX require an external capacitor on VCC for stability?

No - the device contains no internal oscillator or regulator requiring bypass capacitance. However, a 0.1 µF ceramic capacitor placed near the VCC pin is recommended per best practices to suppress high-frequency noise that could affect threshold accuracy during fast transients.