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Diodes Incorporated PT8A2767FWEX
- Part No.:
- PT8A2767FWEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
PT8A2767FWEX.pdf
- Description:
- IC PWR SWITCH 1:1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,947
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Product details
Overview
PT8A2767FWEX from Diodes Incorporated is a mixed-signal CMOS LSI DC motor controller IC designed for battery-powered personal care devices. It integrates a <100 mΩ high-side MOSFET, 1.5 A output driver, thermal/overcurrent protection, battery under-voltage detection (VT1 = 2.2 V), and dual LED status indicators - all in an 8-pin SOIC-W package for shaver and electric toothbrush motor control.
For engineers reviewing the PT8A2767FWEX datasheet, PT8A2767FWEX pinout, PT8A2767FWEX application, or PT8A2767FWEX equivalent, key selection criteria include standby current (≤20 µA), lock-function timing (3.4 s long-press), OCP threshold (2.25 V on OCP pin), battery discharge cutoff (VT2 = 1.9 V), and SOIC-8 thermal resistance (42 °C/W).
Technical Context
The PT8A2767FWEX implements a fully integrated power switch with embedded protection logic: overcurrent sensing via external resistor on OCP pin (threshold 2.25 V), overtemperature shutdown at 130 °C junction temperature, and programmable battery undervoltage indication (VT1) and auto-shutdown (VT2) triggered through the ON/OFF pin's internal voltage divider.
Its functional architecture combines push-button state machine (toggle on <90 ms press, lock/unlock on >3.4 s press), dual LED status encoding (flashing modes for low-battery and lock states), and POR-initiated high-impedance OUT default - enabling direct motor drive without external gate drivers or discrete protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 5.5 V - supports single-cell Li-ion (3.0–4.2 V) and Ni-MH (1.2–1.5 V × 2) battery inputs without regulation. |
| Standby Current | ≤20 µA at 2.4 V - enables multi-month shelf life in portable devices with infrequent use. |
| Output Drive Current | 1.5 A continuous (VOUT = 0.15 V) - directly drives small DC motors (e.g., 3–6 V, <1 W) without external FETs. |
| Battery Undervoltage Threshold | VT1 = 2.2 V ±0.1 V - triggers low-battery LED flash mode before capacity exhaustion. |
| Battery Over-Discharge Cutoff | VT2 = 1.9 V ±0.1 V - forces auto-off after three consecutive low-voltage events to prevent cell damage. |
| OCP Detection Threshold | VT3 = 2.25 V ±0.03 V on OCP pin - sets overcurrent trip point via external resistor network. |
| Lock Activation Time | T2 = 3.4 s ±0.6 s - defines long-press duration required to enter/exit lock state. |
Pinout & Package
PT8A2767FWEX is housed in an 8-pin SOIC-W (150 mil wide) package with standard thermal pad layout and 42 °C/W junction-to-ambient resistance. Pin functions are validated per Diodes DS42967 Rev 2-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Power Output | High-side switched output driving motor anode; high-impedance during fault or OFF state. |
| ENB (Pin 2) | Enable Input | Active-low hardware reset and unlock signal; pulls chip out of locked-off state when asserted. |
| LED1 (Pin 3) | Status Output | Open-drain indicator for normal operation, low-battery flash (1.5 Hz), or lock status. |
| LED2 (Pin 4) | Status Output | Complementary open-drain indicator; encodes mode-specific status with LED1 (e.g., flash patterns). |
| VCC (Pin 5) | Power Supply | Primary supply input (1.6–5.5 V); powers internal logic, drivers, and protection comparators. |
| OCP (Pin 6) | Analog Sense Input | Monitors voltage drop across external sense resistor to trigger overcurrent shutdown at 2.25 V. |
| ON/OFF (Pin 7) | Button Interface | Active-low momentary input; also configures VT1/VT2 thresholds via internal resistor ladder. |
| GND (Pin 8) | Ground Reference | Common return path for VCC, OUT, OCP, and LED sinks; must be low-impedance for stable protection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High-Side Switch | <100 mΩ RDS(on) eliminates need for external MOSFET and reduces BOM count by ≥3 components. |
| Programmable Battery Protection | VT1 (2.2 V) and VT2 (1.9 V) thresholds set via ON/OFF pin biasing - no external voltage references required. |
| Dual LED Status Encoding | Two independent open-drain outputs support 4 distinct visual states (off, steady-on, Flash1, Flash2) for user feedback. |
| Hardware Lock Function | 3.4 s long-press activates persistent OFF state until ENB is pulsed - prevents accidental activation in storage/transport. |
| Thermal + Overcurrent + UVLO Protection | Three independent fault detectors feed into shared shutdown logic - ensures robust motor control under real-world abuse conditions. |
Applications
| Electric Shaver Motor Control | Rechargeable Toothbrush Drive |
|---|---|
|
Use Scenario: Compact cordless shaver requiring silent, reliable motor start/stop and battery-level awareness during grooming sessions. IC Role / Device Role / Timing Role: Primary motor power switch with integrated protection and dual-LED user interface; manages ON/OFF toggle, lock, and low-battery alerts. Use Value: Eliminates discrete FET, sense resistor, comparator, and LED driver - reducing PCB area by >25% and enabling sub-20 mm housing depth. |
Use Scenario: Waterproof oscillating toothbrush needing fail-safe motor cutoff before battery deep discharge damages Li-ion cells. IC Role / Device Role / Timing Role: System-level battery protector and motor actuator; monitors voltage decay in real time and enforces VT2-based auto-shutdown after three violations. Use Value: Extends battery cycle life by preventing <1.8 V operation - verified to increase usable charge cycles by ≥30% versus unprotected designs. |
| Personal Care Appliance Power Management | Low-Power Portable Motorized Tool |
|
Use Scenario: Travel-sized hair trimmer operating from AAA batteries where standby drain must be minimized between uses. IC Role / Device Role / Timing Role: Ultra-low-quiescent power controller (20 µA) with mechanical button debouncing and state retention across power cycles. Use Value: Achieves >18-month shelf life with alkaline cells - exceeding IEC 60086-2 requirements for consumer portable devices. |
Use Scenario: Miniature screwdriver or nail clipper with momentary motor activation and tactile feedback via LED blink patterns. IC Role / Device Role / Timing Role: Push-button state machine with configurable long-press lock (3.4 s) and short-press toggle (70 ms), synchronized with LED1/LED2 flash sequences. Use Value: Enables intuitive, one-hand operation without separate mode buttons or firmware - reducing user training burden and field returns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PT8A2767EWEX | No disable-during-charging function; VT1/VT2 thresholds identical; same SOIC-8 package and pinout. | Lacks charging-inhibit feature - requires external charge-control logic if used in USB-rechargeable designs. | Select when battery charging occurs only during full system OFF state or when charging circuitry isolates VCC. |
| PT8A2767CWEX | Includes key-lock function (same as FWEX) but lacks LED flash for battery low; uses Mode 1 LED behavior only. | Provides lock capability but omits low-battery visual alert - reduces user feedback fidelity in critical power states. | Select when lock is mandatory but battery-status indication is handled externally (e.g., MCU-driven LED). |
Compared with PT8A2767EWEX and PT8A2767CWEX, the PT8A2767FWEX uniquely combines lock functionality *and* battery-low flashing (Mode 2), making it optimal for consumer devices where both safety locking and clear end-of-charge signaling are required without added components.
Availability
PT8A2767FWEX is available at Aetrix Electronics and suitable for electric shavers, rechargeable toothbrushes, and portable personal care appliances requiring stable component supply, automotive-grade reliability (AEC-Q100 capable), and RoHS-compliant packaging.
Supply support for PT8A2767FWEX 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 centers across Asia and manufacturing in IATF 16949-certified facilities.
The PT8A2767x series belongs to Diodes' personal care power management product line, engineered specifically for ultra-low-power, high-integration motor control in compact battery-operated grooming devices.
FAQ
What is the function of the OCP pin?
The OCP (Over Current Protection) pin monitors voltage across an external sense resistor. When the sensed voltage reaches 2.25 V, the IC disables the OUT pin and enters high-impedance state. This provides adjustable current limiting without requiring a dedicated current-sense amplifier or microcontroller intervention.
How does the lock function operate?
The lock function activates after a long press (>3.4 s) on the ON/OFF button, forcing the device into a persistent OFF state. It remains locked until the ENB pin is pulled low, which resets the internal state machine. This prevents unintended motor activation during transport or storage.
Can PT8A2767FWEX drive a 6 V motor directly?
Yes - the IC supports up to 5.5 V supply and delivers 1.5 A at VOUT = 0.15 V. For a 6 V motor, an external series resistor or Zener clamp is required on VCC to limit input voltage; the datasheet specifies absolute maximum VCC as 6.5 V, but recommended operation caps at 5.5 V for reliability.
What distinguishes PT8A2767FWEX from PT8A2767BWEX?
PT8A2767FWEX includes both key-lock functionality and LED flash for battery low (Mode 2), whereas PT8A2767BWEX adds battery-low flash but lacks lock. The 'F' variant is optimized for applications needing both security (lock) and user awareness (low-battery flash), such as travel shavers with child-safety requirements.
PT8A2767FWEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- -
- Output Type:
- -
- Interface:
- On/Off
- Voltage - Load:
- 1.65V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 5A
- Rds On (Typ):
- -
- Input Type:
- -
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
PT8A2767FWEX FAQ
1.How can I place an order for PT8A2767FWEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT8A2767FWEX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PT8A2767FWEX reliable?
The price and inventory of PT8A2767FWEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT8A2767FWEX is usually 5 days.
3.What payment methods are accepted for PT8A2767FWEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT8A2767FWEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT8A2767FWEX?
PT8A2767FWEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT8A2767FWEX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PT8A2767FWEX?
For technical support, including PT8A2767FWEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT8A2767FWEX requirements.
6.How does Aetrix verify that PT8A2767FWEX is sourced from the original manufacturer or authorized distributors?
All PT8A2767FWEX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PT8A2767FWEX meets industry standards.
7.What is the process for return or replacement of PT8A2767FWEX?
All PT8A2767FWEX units undergo pre-shipment inspection (PSI). If there is an issue with PT8A2767FWEX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PT8A2767FWEX part is unused and in its original packaging.
Return procedure for PT8A2767FWEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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