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Diodes Incorporated PT7M6125CLTA3EX
- Part No.:
- PT7M6125CLTA3EX
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PT7M6125CLTA3EX.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,519
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Product details
Overview
PT7M6125CLTA3EX from Diodes Incorporated is a precision ultra-low-power voltage detector with 2.5V threshold, ±1.5% accuracy at 25°C, 1μA supply current at 3.6V, and N-channel open-drain active-low reset output. It operates from 1.2V to 5.5V across –40°C to +85°C and is used in battery-powered microcontroller supervision and power-rail monitoring in portable instrumentation.
For engineers reviewing the PT7M6125CLTA3EX datasheet, PT7M6125CLTA3EX pinout, PT7M6125CLTA3EX application, or PT7M6125CLTA3EX equivalent, key selection criteria include detection accuracy over temperature, propagation delay (17μs), hysteresis (5%), output configuration compatibility, and SOT23-3 package footprint constraints.
Technical Context
The PT7M6125CLTA3EX integrates a precision bandgap reference, comparator, and internally trimmed resistor network to set a fixed 2.5V detection threshold (VTH−) with VTH+ = 1.05 × VTH−, yielding 5% hysteresis. Its internal 1%–5% hysteresis circuit eliminates external components for stable reset assertion/deassertion.
It uses an N-channel open-drain output stage requiring an external pull-up for active-low reset signaling. Propagation delay is tightly specified at 17μs typical, enabling fast response to brownout conditions without false triggering during transient dips.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 2.5V nominal (VTH−); defines precise brownout point for 3.3V/2.5V logic rails |
| Threshold Accuracy | ±1.5% at 25°C; ensures reliable reset activation within tight system voltage margins |
| Supply Current | 1.0μA typical at 3.6V; enables multi-year battery life in always-on monitoring circuits |
| Hysteresis | 5% (VTH+ = 1.05 × VTH−); prevents chatter during slow voltage recovery |
| Propagation Delay | 17μs typical; supports rapid fault response in real-time embedded systems |
| Operating Voltage Range | 1.2V to 5.5V; compatible with single-cell Li-ion, coin cell, and 3.3V/5V logic supplies |
| Temperature Range | –40°C to +85°C; validated for industrial and automotive cabin environments |
Pinout & Package
PT7M6125CLTA3EX is housed in a 3-pin SOT23-3 (TA3) package with gull-wing leads, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply Input | Power rail input (1.2–5.5V); monitored for undervoltage condition |
| GND | Ground Reference | Analog and digital ground return for internal reference and comparator |
| RST | Open-Drain Output | Active-low reset signal; requires external pull-up to define logic-high level |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0μA at 3.6V enables >10-year battery operation in IoT endpoint sensors |
| Precision threshold trimming | ±1.5% accuracy at 25°C reduces need for system-level calibration |
| Internally generated hysteresis | 5% fixed hysteresis eliminates external resistors and improves layout robustness |
| Fast propagation delay | 17μs typical ensures timely MCU reset before logic corruption occurs |
| Wide operating voltage range | 1.2V–5.5V supports direct integration with LiFePO₄, alkaline, and regulated rails |
Applications
| Microcontroller Power Supervision | Portable Medical Sensors |
|---|---|
Use Scenario: Monitors 3.3V supply to ARM Cortex-M0+ MCU in handheld glucose meter. IC Role / Device Role / Timing Role: Voltage detector providing clean, chatter-free reset signal on VCC brownout. Use Value: Prevents firmware crash during battery discharge; 1μA current extends AA battery life by 3.2 years at 10-second wake intervals. |
Use Scenario: Supervises 2.5V LDO output powering analog front-end of wearable ECG patch. IC Role / Device Role / Timing Role: Undervoltage lockout (UVLO) element ensuring ADC reference stability prior to data acquisition. Use Value: Eliminates corrupted waveform capture during low-battery states; ±1.5% threshold accuracy maintains clinical-grade measurement integrity. |
| Industrial PLC I/O Modules | Smart Meter Battery Backup |
Use Scenario: Detects 5V system rail collapse in DIN-rail mounted remote I/O node. IC Role / Device Role / Timing Role: Fault-triggered reset generator interfacing with FPGA configuration logic. Use Value: 17μs propagation delay guarantees deterministic state recovery before next scan cycle; SOT23-3 footprint saves space on dense control board. |
Use Scenario: Monitors 3.6V lithium-thionyl chloride backup cell in AMI smart meter. IC Role / Device Role / Timing Role: Brownout detector initiating nonvolatile memory save and RTC holdover mode. Use Value: 5% hysteresis prevents repeated save cycles during marginal voltage recovery; –40°C to +85°C rating ensures field reliability in outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803DB25DBZR | 2.5V threshold, ±2.5% accuracy, 0.5μA ICC, SOT23-3, push-pull active-low output | Requires no pull-up resistor but draws higher current during reset assertion | Select when board space allows no external components and lower ICC is critical |
| APX803S-25SA-7 | 2.5V threshold, ±2.0% accuracy, 1.2μA ICC, SOT23-3, open-drain active-low output | Same output topology but wider accuracy tolerance and slightly higher current | Select when cost sensitivity outweighs ±0.5% accuracy requirement |
Compared with TLV803DB25DBZR and APX803S-25SA-7, PT7M6125CLTA3EX delivers tighter threshold accuracy (±1.5%) and lower quiescent current (1.0μA), making it optimal for long-life battery systems where voltage margin is constrained and reset timing must be deterministic.
Availability
PT7M6125CLTA3EX is available at Aetrix Electronics and suitable for microcontroller supervision, portable medical sensors, industrial I/O modules, and smart meter battery backup requiring stable component supply and long-term lifecycle support.
Supply support for PT7M6125CLTA3EX 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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial and consumer markets.
The PT7M61xx series was designed specifically for ultra-low-power voltage monitoring in space-constrained, battery-operated systems-emphasizing accuracy, minimal current draw, and seamless integration into existing reset architectures.
FAQ
What is the exact detection threshold voltage for PT7M6125CLTA3EX?
The PT7M6125CLTA3EX has a nominal detection threshold (VTH−) of 2.5V, with ±1.5% accuracy at 25°C and ±2.5% over the full –40°C to +85°C operating range. This value is factory-trimmed and does not require external calibration.
Does PT7M6125CLTA3EX require an external pull-up resistor on the RST pin?
Yes - the RST pin is an N-channel open-drain output and must be pulled up to a valid logic-high voltage (e.g., VCC or another supply rail) via an external resistor. Typical values range from 1kΩ to 510kΩ depending on load capacitance and rise-time requirements.
Can PT7M6125CLTA3EX operate from a 1.2V supply?
Yes - the device is fully specified to operate down to 1.2V VCC while maintaining functional detection behavior. However, output drive strength (VOL, VOH) and propagation delay are characterized starting at VCC ≥ 1.2V, with VOL ≤ 0.3V at 1mA sink current.
What is the hysteresis percentage and how is it implemented?
PT7M6125CLTA3EX provides 5% hysteresis (VTH+ = 1.05 × VTH−), implemented via an internal circuit that shifts the release threshold upward after reset assertion. This eliminates external hysteresis components and ensures stable operation during slow voltage recovery.
PT7M6125CLTA3EX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 200µs Maximum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
PT7M6125CLTA3EX FAQ
1.How can I place an order for PT7M6125CLTA3EX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M6125CLTA3EX 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 PT7M6125CLTA3EX reliable?
The price and inventory of PT7M6125CLTA3EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M6125CLTA3EX is usually 5 days.
3.What payment methods are accepted for PT7M6125CLTA3EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M6125CLTA3EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M6125CLTA3EX?
PT7M6125CLTA3EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M6125CLTA3EX 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 PT7M6125CLTA3EX?
For technical support, including PT7M6125CLTA3EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M6125CLTA3EX requirements.
6.How does Aetrix verify that PT7M6125CLTA3EX is sourced from the original manufacturer or authorized distributors?
All PT7M6125CLTA3EX 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 PT7M6125CLTA3EX meets industry standards.
7.What is the process for return or replacement of PT7M6125CLTA3EX?
All PT7M6125CLTA3EX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M6125CLTA3EX, 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 PT7M6125CLTA3EX part is unused and in its original packaging.
Return procedure for PT7M6125CLTA3EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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