My Inquiry
My Account
Diodes Incorporated PT8A3515BPEX
- Part No.:
- PT8A3515BPEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Power Management - Specialized
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
PT8A3515BPEX.pdf
- Description:
- IRON CONTROLLER DIP-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,655
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PT8A3515BPEX from Pericom Semiconductor is a dedicated smart electric iron controller IC with integrated shunt regulator, AC-line-synchronized timer (60Hz), 30s horizontal timeout and 8-minute vertical timeout, open-drain LED driver, active-high relay output, and buzzer tone generation at 4kHz. It operates from 4.5–5.5V and supports 120V/240V mains systems via external sensor interface.
For engineers reviewing the PT8A3515BPEX datasheet, PT8A3515BPEX pinout, PT8A3515BPEX application, or PT8A3515BPEX equivalent, key selection criteria include AC-frequency selection (60Hz), vertical timeout duration (8 min), buzzer behavior (6-pulse stop), relay drive capability (5 mA sink), and DIP-8 lead-free packaging for thermal reliability in high-temp iron housings.
Technical Context
The PT8A3515BPEX uses AC 60Hz zero-crossing signal on ACCLK (Pin 7) as its primary timing reference, eliminating need for crystal or RC oscillator drift compensation. Its internal logic interprets SW (Pin 6) input level to distinguish horizontal (high) vs. vertical (low) iron orientation, triggering distinct timeout paths.
It integrates a 4.5–5.5V shunt regulator (VCC pin), sensor signal processor with debounce immunity, power-on reset, and dual-output control: RELAY (Pin 2, active-high, 0.7mA source) and DISC/BUZ (Pin 1, 4kHz buzzer drive or capacitor discharge). LED (Pin 3) provides open-drain status indication with 1Hz flash on timeout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5–5.5 V - powers internal logic and shunt regulator; compatible with standard 5V rail derived from mains via resistor-capacitor dropper. |
| AC Input Clock | 60 Hz - selected by part number (B suffix); used as precise timing reference for all timeouts without crystal. |
| Horizontal Timeout | 30 s - triggers safety shutdown when iron remains motionless in horizontal position; prevents surface overheating. |
| Vertical Timeout | 8 min - activates after static vertical placement; balances user convenience with thermal safety. |
| Buzzer Output | 4 kHz, 6-pulse burst - audible alert on timeout; avoids continuous noise while ensuring user notice. |
| LED Driver | Open-drain, active-low - sinks ≥10 mA; enables direct connection to common-anode LED with pull-up resistor. |
| Relay Drive | Active-high, 0.7 mA source - directly drives small-signal relay coil or transistor base; simplifies external driver stage. |
| Standby Power | <1 W system-level - achieved via low ICC (≤400 µA) and optimized application circuit; meets energy-saving requirements. |
Pinout & Package
PT8A3515BPEX is supplied in Pb-free DIP-8 package (JEDEC MS-001D/BA), with 0.3 inch body width, 2.54 mm lead pitch, and 9.0–9.4 mm length. Thermal design supports sustained operation near 85°C ambient in enclosed iron handles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DISC/BUZ (1) | Dual-function output | Discharges external electrolytic cap during startup; outputs 4kHz square wave to buzzer on timeout (active high). |
| RELAY (2) | Power control output | Active-high driver for heating element relay; 0.7mA source current sufficient for small signal relays or NPN base drive. |
| LED (3) | Status indicator output | Open-drain, active-low; sinks ≥10mA to flash external LED at ~1Hz post-timeout; floats during normal heating. |
| GND (4) | Reference node | System ground return for all analog and digital blocks; must be low-impedance path to minimize noise coupling into sensor inputs. |
| TEST (5) | Mode selection input | Pulled low to enter functional test mode; scales all timeouts by factor of 0.1 (e.g., 8 min → 48 s) for rapid validation. |
| SW (6) | Sensor orientation input | High = horizontal iron position; low = vertical; Schmitt-triggered to reject mechanical vibration noise from sensor switch. |
| ACCLK (7) | Timing reference input | Accepts 50/60Hz AC waveform from mains-derived divider; internal Schmitt trigger ensures clean edge detection for jitter-free timing. |
| VCC (8) | Power supply | 4.5–5.5V regulated input; internally shunted to maintain stable voltage despite unregulated input ripple from dropper network. |
Key Features
| Feature | Design Value |
|---|---|
| AC-line synchronized timing | Uses 60Hz mains as clock source - eliminates crystal cost and aging drift; achieves ±1% timer accuracy without calibration. |
| Motion & orientation sensing | Distinguishes horizontal vs. vertical iron posture via SW pin logic level - enables differentiated safety timeouts per physical state. |
| Integrated shunt regulator | Stabilizes VCC from unregulated dropper supply - removes need for external LDO or zener, reducing BOM count and board space. |
| Low-power standby | ICC ≤ 400 µA at 5V - enables sub-1W total system standby consumption, meeting global energy efficiency regulations for household appliances. |
| Robust sensor interface | Immunity to mechanical vibration and contact bounce - validated via proprietary signal processing architecture for reliable iron position detection. |
| Quick test mode | TEST pin activation reduces all timeouts by 10× - accelerates functional verification during production testing and field service. |
Applications
| Electric Iron Safety Control | Auto-Shutoff Appliance Module |
|---|---|
Use Scenario: Embedded in 120V/60Hz electric irons sold in North America to comply with UL 1082 thermal cutoff requirements. IC Role / Device Role / Timing Role: Primary safety controller that monitors iron orientation and enforces 30s (horizontal) or 8min (vertical) auto-shutoff using AC-line synchronized timing. Use Value: Eliminates need for mechanical bimetallic thermostats or external microcontrollers; reduces system cost by >30% versus MCU-based solutions. | Use Scenario: Integrated into OEM-designed garment care appliances (e.g., steam irons, garment steamers) requiring certified thermal protection. IC Role / Device Role / Timing Role: Standalone safety co-processor that validates sensor integrity and executes fail-safe shutdown independent of main MCU firmware. Use Value: Provides hardware-enforced safety layer meeting IEC 60335-1 Annex G requirements; decouples safety-critical timing from software execution. |
| Energy-Efficient Heating System | Appliance Field Service Tool |
Use Scenario: Used in export-targeted irons supporting both 120V/60Hz and 240V/50Hz regions via variant selection (A/B suffixes). IC Role / Device Role / Timing Role: Dual-voltage compatible controller with fixed 60Hz timing reference - enables single PCB design across multiple regional SKUs. Use Value: Reduces inventory complexity and NRE costs; maintains ±1% timer accuracy across voltage ranges without recalibration. | Use Scenario: Leveraged during repair diagnostics to verify iron sensor functionality and timeout behavior without full unit disassembly. IC Role / Device Role / Timing Role: Built-in TEST pin enables 10× accelerated timeout simulation - allows technicians to validate safety logic in under 2 minutes. Use Value: Cuts diagnostic time by 70% versus waiting for real-time timeouts; confirms sensor signal integrity and relay actuation path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart iron controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PT8A3515APEX | 50Hz ACCLK support instead of 60Hz; identical pinout, timing logic, and feature set. | Targeted for 240V/50Hz markets (EU, Asia); requires matching mains frequency in application circuit. | Select when designing for 50Hz regions; no layout or firmware changes needed beyond ACCLK source configuration. |
| PT8A3517BPEX | Same 60Hz operation but 8min vertical timeout replaced with continual buzzer output (vs. 6-pulse stop). | Preferred where persistent audible alert is required post-timeout (e.g., commercial laundry equipment). | Choose if buzzer behavior must remain active until manual reset; otherwise, PT8A3515BPEX offers quieter, lower-power alert profile. |
Compared with PT8A3515APEX (50Hz) and PT8A3517BPEX (continual buzzer), PT8A3515BPEX uniquely delivers 60Hz synchronization with precisely timed 6-pulse buzzer feedback - optimizing user notification while minimizing power and acoustic fatigue in residential iron applications.
Availability
PT8A3515BPEX is available at Aetrix Electronics and suitable for electric iron safety control, auto-shutoff appliance modules, and energy-efficient heating systems requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for PT8A3515BPEX 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 provider of high-performance interface, timing, and power management ICs, specializing in mixed-signal solutions for consumer and industrial applications.
The PT8A351x series belongs to Pericom's Smart Appliance Controller product line, designed specifically for thermally critical household appliances requiring autonomous, hardware-based safety timing without software intervention.
FAQ
What is the function of the DISC/BUZ pin?
The DISC/BUZ pin serves two roles: during power-up, it discharges an external electrolytic capacitor to stabilize the supply rail; during timeout, it outputs a 4kHz square wave to drive a buzzer. It is active-high and capable of driving standard 20mm piezoelectric buzzers without external amplification.
How does the PT8A3515BPEX detect iron orientation?
Orientation detection relies on an external mechanical or magnetic sensor connected to the SW pin. A high logic level on SW indicates horizontal placement; low indicates vertical. Internal Schmitt-triggered input rejects vibration-induced noise, ensuring reliable state detection even during iron movement.
Can the PT8A3515BPEX operate from a 3.3V supply?
No. The device requires 4.5–5.5V on VCC, enforced by its internal shunt regulator architecture. Attempting 3.3V operation will prevent proper regulation and cause failure of timer, sensor processing, and output drivers. A 5V dropper or linear regulator is mandatory.
Is the TEST pin required for normal operation?
No. The TEST pin is optional and pulled high (via resistor or left open) during normal use. Only pull it low during functional testing to activate scaled-down timeout durations (e.g., 8 min → 48 s). Leaving it unconnected ensures default safety timing behavior.
PT8A3515BPEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Smart Iron Controller
- Current - Supply:
- 400µA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -10°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-DIP
PT8A3515BPEX FAQ
1.How can I place an order for PT8A3515BPEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT8A3515BPEX 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 PT8A3515BPEX reliable?
The price and inventory of PT8A3515BPEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT8A3515BPEX is usually 5 days.
3.What payment methods are accepted for PT8A3515BPEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT8A3515BPEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT8A3515BPEX?
PT8A3515BPEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT8A3515BPEX 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 PT8A3515BPEX?
For technical support, including PT8A3515BPEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT8A3515BPEX requirements.
6.How does Aetrix verify that PT8A3515BPEX is sourced from the original manufacturer or authorized distributors?
All PT8A3515BPEX 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 PT8A3515BPEX meets industry standards.
7.What is the process for return or replacement of PT8A3515BPEX?
All PT8A3515BPEX units undergo pre-shipment inspection (PSI). If there is an issue with PT8A3515BPEX, 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 PT8A3515BPEX part is unused and in its original packaging.
Return procedure for PT8A3515BPEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PT8A3515BPEX Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
