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Diodes Incorporated PT7M6124NLTA3EX
- Part No.:
- PT7M6124NLTA3EX
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PT7M6124NLTA3EX.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,394
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Product details
Overview
PT7M6124NLTA3EX from Pericom Semiconductor is an ultra-low-power N-channel open-drain voltage detector with 2.4V threshold (±1.5% at 25°C), 0.9µA supply current at 3V, and 17µs propagation delay. It monitors system supply rails in battery-powered microcontrollers, portable instrumentation, and power management circuits where precise brownout detection and minimal quiescent current are critical.
For engineers reviewing the PT7M6124NLTA3EX datasheet, PT7M6124NLTA3EX pinout, PT7M6124NLTA3EX application, or PT7M6124NLTA3EX equivalent, key selection criteria include its SOT23-3 package, active-low open-drain reset output, -40°C to +85°C operating range, and 5% internal hysteresis for noise immunity on noisy supply lines.
Technical Context
This device integrates a precision bandgap reference, comparator, and internally trimmed resistor network to set a fixed 2.4V detection threshold (VTH−). Hysteresis is fixed at 5% (VTH+ = VTH− × 1.05), eliminating external components while ensuring stable reset assertion/deassertion during supply transients.
The N-channel open-drain output requires an external pull-up resistor and sinks up to 20mA. Propagation delay is specified at 17µs typical, with timeout period of 200µs, enabling fast, reliable power-on reset generation without latch-up risk in low-voltage systems down to 1.2V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detect Threshold | 2.4V ±1.5% at 25°C; ensures accurate brownout detection for 2.4V nominal rails |
| Supply Current | 0.9µA at 3V; enables multi-year battery life in always-on monitoring applications |
| Propagation Delay | 17µs typical; provides rapid reset response to supply dips without false triggering |
| Hysteresis | 5% (VTH+ = 1.05 × VTH−); prevents oscillation during slow-rising/falling supply edges |
| Operating Voltage | 1.2V to 5.5V; supports operation across Li-ion, coin-cell, and regulated 3.3V/5V supplies |
| Output Type | N-channel open-drain; allows flexible logic-level translation and wired-OR reset bus configuration |
| Temp Range | -40°C to +85°C; qualified for industrial and extended-temperature embedded systems |
Pinout & Package
SOT23-3 package (JEDEC MO-178AA compliant), 2.95mm × 1.30mm footprint, 1.45mm height, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Supply Input | Connects to monitored voltage rail; powers internal circuitry and sets detection reference |
| 2 (GND) | Ground Reference | System ground return path; required for accurate threshold referencing and comparator operation |
| 3 (RST) | Open-Drain Reset Output | Active-low output; sinks current when VCC < 2.4V; requires external pull-up for logic-high state |
Key Features
| Feature | Design Value |
|---|---|
| Threshold Accuracy | ±1.5% at 25°C and ±2.5% over full temperature range - eliminates need for calibration in cost-sensitive designs |
| Ultra-Low ICC | 0.9µA at 3V - reduces standby power by >90% vs. comparable detectors, critical for energy harvesting nodes |
| Fixed Hysteresis | 5% internal hysteresis - removes external resistor divider and capacitor, saving PCB area and BOM count |
| Fast Propagation | 17µs typical delay - ensures timely MCU reset before logic corruption occurs during undervoltage events |
| Wide VCC Range | 1.2V–5.5V operation - supports direct monitoring of single-cell LiFePO₄ (2.5V), alkaline (1.5V), and 3.3V/5V rails |
Applications
| Microcontroller Power-On Reset | Portable Medical Sensor Node |
|---|---|
|
Use Scenario: Ensures clean reset assertion during power-up and brownout of ARM Cortex-M0+ based wearable ECG monitor. IC Role / Device Role / Timing Role: Voltage detector providing active-low reset signal to MCU's nRESET pin with 17µs response latency. Use Value: Prevents firmware execution from corrupted memory states by guaranteeing reset hold time exceeds CPU minimum requirement (≥100µs). |
Use Scenario: Monitors coin-cell (CR2032) supply in Bluetooth LE pulse oximeter with intermittent sensor activation. IC Role / Device Role / Timing Role: Low-quiescent-current detector triggering system shutdown when battery drops below 2.4V. Use Value: Extends usable battery life by 32% versus 2.5V threshold parts, maximizing clinical measurement cycles per cell. |
| Industrial PLC I/O Module | Smart Meter Backup Power Supervision |
|
Use Scenario: Detects undervoltage on isolated 3.3V auxiliary rail powering CAN transceiver and ADC in DIN-rail controller. IC Role / Device Role / Timing Role: Open-drain reset generator interfaced to FPGA configuration logic via 10kΩ pull-up. Use Value: Eliminates external hysteresis components and guarantees noise-immune reset under EMI-heavy factory floor conditions. |
Use Scenario: Supervises supercapacitor backup supply (2.7V rated) during main AC failure in residential electricity meter. IC Role / Device Role / Timing Role: Threshold detector asserting reset to real-time clock (RTC) when backup voltage falls to 2.4V. Use Value: Enables deterministic RTC save-and-hibernate sequence before backup energy depletes below functional minimum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB24DBZR | 2.4V threshold, ±2% accuracy, 0.5µA ICC, push-pull active-low output | No external pull-up needed; higher drive strength (20mA sink/source) but no hysteresis option | Select when board space permits SOT23-3 and push-pull simplifies reset bus design |
| APX803S-24SA-7 | 2.4V threshold, ±1.5% accuracy, 1.2µA ICC, open-drain active-low output, 5% hysteresis | Same functional behavior but wider VCC range (0.9V–6.0V); slightly higher ICC | Prefer when operating below 1.2V (e.g., single NiMH cell) or requiring extended voltage margin |
Compared with PT7M6124NLTA3EX, TLV803EB24DBZR offers lower ICC but lacks programmable hysteresis, while APX803S-24SA-7 matches hysteresis and accuracy but trades 0.3µA higher ICC for sub-1.2V capability - choice depends on supply headroom and reset bus topology requirements.
Availability
PT7M6124NLTA3EX is available at Aetrix Electronics and suitable for microcontroller reset, portable medical sensors, industrial I/O modules, and smart meter backup supervision requiring stable component supply across high-mix, low-volume production runs.
Supply support for PT7M6124NLTA3EX 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) specializes in high-performance analog and mixed-signal ICs for timing, connectivity, and power management.
The PT7M61xx series was designed specifically for ultra-low-power supply monitoring in battery-critical and space-constrained embedded systems, emphasizing accuracy, stability, and integration.
FAQ
What is the exact detection threshold voltage for PT7M6124NLTA3EX?
The PT7M6124NLTA3EX has a nominal detection threshold (VTH−) of 2.4V, with guaranteed accuracy of ±1.5% at 25°C and ±2.5% over the full −40°C to +85°C operating range. This value is laser-trimmed during manufacturing and does not require external calibration.
Can PT7M6124NLTA3EX be used with a 1.8V supply rail?
Yes - the device operates from 1.2V to 5.5V, so it functions correctly on a 1.8V rail. However, the 2.4V threshold exceeds 1.8V, meaning it will assert reset continuously. It is only suitable for monitoring rails ≥2.4V, such as 3.3V or 5V systems, or backup supplies like 2.7V supercaps.
What pull-up resistor value is recommended for the RST pin?
A 10kΩ pull-up resistor to the host logic supply (e.g., 3.3V or 5V) is recommended. This ensures sufficient rise time (<100ns) while limiting current to <0.33mA during reset assertion, aligning with the 20mA sink rating and typical MCU input leakage.
Does PT7M6124NLTA3EX require an external capacitor on VCC?
No external capacitor is required for basic operation. However, a 0.1µF ceramic decoupling capacitor placed near the VCC pin is strongly recommended to suppress high-frequency noise that could cause false resets, especially in electrically noisy environments like motor drives or switching power supplies.
PT7M6124NLTA3EX 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:
- Open Drain or Open Collector
- 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
PT7M6124NLTA3EX FAQ
1.How can I place an order for PT7M6124NLTA3EX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M6124NLTA3EX 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 PT7M6124NLTA3EX reliable?
The price and inventory of PT7M6124NLTA3EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M6124NLTA3EX is usually 5 days.
3.What payment methods are accepted for PT7M6124NLTA3EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M6124NLTA3EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M6124NLTA3EX?
PT7M6124NLTA3EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M6124NLTA3EX 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 PT7M6124NLTA3EX?
For technical support, including PT7M6124NLTA3EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M6124NLTA3EX requirements.
6.How does Aetrix verify that PT7M6124NLTA3EX is sourced from the original manufacturer or authorized distributors?
All PT7M6124NLTA3EX 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 PT7M6124NLTA3EX meets industry standards.
7.What is the process for return or replacement of PT7M6124NLTA3EX?
All PT7M6124NLTA3EX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M6124NLTA3EX, 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 PT7M6124NLTA3EX part is unused and in its original packaging.
Return procedure for PT7M6124NLTA3EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PT7M6124NLTA3EX Tags
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