Diodes Incorporated PT8A2766JTAEX

Overview

PT8A2766JTAEX from Pericom Semiconductor is a DC motor controller IC designed for battery-powered personal care devices. It integrates a 150mΩ high-side MOSFET, thermal/short-circuit protection, battery under-voltage detection (VT1 = 2.1–2.3V), over-discharge lockout (VT2 = 1.8–2.0V), and dual LED status indicators - enabling direct motor drive and intelligent power management in compact shaver and toothbrush systems.

For engineers reviewing the PT8A2766JTAEX datasheet, PT8A2766JTAEX pinout, PT8A2766JTAEX application, or PT8A2766JTAEX equivalent, key selection criteria include its 5-pin SOT23-5 package, 1.6–5.5V supply range, 20µA standby current, ON/OFF toggle-and-lock functionality, and integrated battery voltage monitoring with auto-shutdown behavior.

Technical Context

The PT8A2766JTAEX implements a mixed-signal CMOS control architecture with embedded analog comparators for real-time battery voltage monitoring (VT1, VT2), over-current sensing via OCP pin threshold (2.22–2.28V), and thermal shutdown at 130°C. Its enable (ENB) and ON/OFF pins support active-low logic sequencing and programmable discharge-protection voltage adjustment.

It operates as a single-chip motor power switch with no external gate driver required: the integrated high-side MOSFET delivers up to 1A continuous output current (tested at VCC = 2.4V, VOUT = 0.15V), while internal POR ensures safe startup with high-impedance OUT and low-level LED outputs.

Key Specifications

Pinout & Package

PT8A2766JTAEX is packaged in a lead-free, RoHS-compliant 5-pin SOT23-5 (TA) package per JEDEC MO-178C/AA, with 1.27mm pitch and 2.9mm × 1.6mm footprint - optimized for space-constrained PCB layouts in personal care appliances.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DC motor control applications.

Compared with PT8A2766ITAE, JTAEX offers identical performance with enhanced supply-chain traceability; versus BD6549GUL, it delivers full battery protection autonomy - reducing external component count by 4 and eliminating firmware dependency for low-voltage response.

Availability

PT8A2766JTAEX is available at Aetrix Electronics and suitable for electric toothbrushes, rotary shavers, and personal care safety modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for PT8A2766JTAEX 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) specialized in high-performance interface, timing, and power management ICs for consumer, computing, and communications markets before its 2017 acquisition.

The PT8A2766x series was developed specifically for ultra-low-cost, high-reliability motor control in battery-powered personal care appliances - prioritizing analog integration, minimal external components, and robust protection against real-world usage faults.

FAQ

What is the maximum continuous motor current supported by PT8A2766JTAEX?

The PT8A2766JTAEX supports up to 1A continuous output current when VCC = 2.4V and VOUT ≤ 0.15V, as specified in its Electrical Characteristics table. This rating assumes proper PCB thermal design (≥1 cm² 2-oz copper pour under GND pad) and ambient temperature ≤ 60°C. Peak pulsed current capability exceeds 5A for ≤50ms durations.

How does the ON/OFF pin implement both button control and battery protection voltage adjustment?

The ON/OFF pin serves dual roles: as an active-low digital input for button press detection (T1 = 50–90ms debounce, T2 = 2.4–3.6s lock toggle), and as an analog input for VT2 threshold setting. When a resistor divider connects between VCC and GND with the midpoint tied to ON/OFF, the IC samples that voltage to determine over-discharge cutoff - enabling chemistry-specific tuning without firmware changes.

Does PT8A2766JTAEX require external components for basic operation?

Yes - a minimum of two external components is required: a 0.1µF ceramic bypass capacitor between VCC and GND, and a flyback diode (e.g., 1N4148) across the motor terminals. The SOT23-5 variant does not include LED driver pins, so status indication requires external circuitry unless omitted entirely for cost-sensitive implementations.

What happens after three consecutive battery over-discharge events?

After three successive VT2-triggered shutdowns, PT8A2766JTAEX enters a persistent lock state where the ON/OFF button is disabled. Recovery requires applying a low pulse to the ENB pin - this resets internal latches and restores normal operation. This behavior prevents irreversible battery damage and is implemented entirely in analog logic with no non-volatile memory involved.