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Diodes Incorporated PT7M6123CLTA3EX
- Part No.:
- PT7M6123CLTA3EX
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PT7M6123CLTA3EX.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,336
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Product details
Overview
PT7M6123CLTA3EX from Pericom Semiconductor is a precision ultra-low-power voltage detector IC with 2.3V threshold, ±1.5% accuracy at 25°C, 0.9µA supply current at 3V, and N-channel open-drain active-low reset output in SOT23-3 package. It monitors VCC in battery-powered microcontrollers, PMICs, and embedded power rails to prevent brownout-induced system faults.
For engineers reviewing the PT7M6123CLTA3EX datasheet, PT7M6123CLTA3EX pinout, PT7M6123CLTA3EX application, or PT7M6123CLTA3EX equivalent, this device delivers deterministic reset assertion with 17µs propagation delay, 5% internal hysteresis, and guaranteed operation from 1.2V to 5.5V across –40°C to +85°C.
Technical Context
The PT7M6123CLTA3EX integrates a precision bandgap reference, comparator, and internally trimmed resistor network to set VTH– = 2.3V with ±2.5% accuracy over temperature. Its internal hysteresis (VTH+ = 1.05 × VTH–) prevents oscillation during slow-rising/falling supply transitions.
It operates as a standalone reset supervisor with no external components required: the open-drain RST output pulls low when VCC drops below 2.3V and releases only after VCC exceeds 2.415V, enabling direct interface with microcontroller reset inputs or logic-level translators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detect Threshold | 2.3V ±1.5% at 25°C; ensures reliable reset initiation for 2.5V/3.3V systems operating near lower rail limits |
| Supply Current | 0.9µA at 3V; enables multi-year battery life in coin-cell–powered IoT sensors and wearables |
| Propagation Delay | 17µs typical; provides fast response to supply droop without false triggering on transient noise |
| Hysteresis | 5% (VTH+ = 2.415V); eliminates chatter during marginal VCC recovery in noisy industrial environments |
| Operating Voltage | 1.2V to 5.5V; supports direct monitoring of Li-ion, NiMH, and regulated 1.8V/2.5V/3.3V/5V rails |
| Output Type | N-channel open-drain, active-low; allows wired-OR reset bus configuration and level-shifting flexibility |
| Temp Range | –40°C to +85°C; qualified for automotive cabin, industrial control, and outdoor edge-node deployments |
Pinout & Package
SOT23-3 package: 1.3mm × 2.9mm × 1.0mm body, surface-mount, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Power Supply Input | Monitored voltage rail; must be ≥1.2V for functional operation and ≥2.3V to hold reset inactive |
| 2 (GND) | Ground Reference | Analog and digital ground return; requires low-impedance connection to minimize threshold error |
| 3 (RST) | Open-Drain Reset Output | Active-low signal asserted when VCC < 2.3V; requires external pull-up to compatible logic voltage |
Key Features
| Feature | Design Value |
|---|---|
| Threshold Accuracy | ±1.5% at 25°C - enables elimination of external calibration in cost-sensitive consumer electronics |
| Ultra-Low ICC | 0.9µA at 3V - reduces quiescent power by >90% vs. comparable discrete reset circuits |
| Internal Hysteresis | 5% fixed (VTH+ = 1.05 × VTH–) - removes need for external hysteresis resistors and PCB space |
| No External Components | Self-contained detection circuit - simplifies BOM, improves MTBF, and accelerates layout |
| Fast Propagation | 17µs typical delay - meets tight reset timing budgets in real-time MCU and FPGA applications |
Applications
| Microcontroller Power-On Reset | Battery Voltage Monitoring |
|---|---|
|
Use Scenario: Ensures clean boot sequence for ARM Cortex-M0+ and RISC-V MCUs powered from single-cell Li-ion or alkaline batteries. IC Role / Device Role / Timing Role: Voltage detector providing active-low reset pulse synchronized to VCC ramp-up and drop-out. Use Value: Prevents code execution at insufficient voltage, eliminating flash corruption and peripheral lockup in portable medical devices. |
Use Scenario: Monitors declining battery voltage in Bluetooth LE beacons and smart tags to trigger low-battery alerts before cutoff. IC Role / Device Role / Timing Role: Standalone threshold detector with hysteresis, interfaced to GPIO or ADC input. Use Value: Extends usable battery life by 12–18% compared to software-only monitoring due to sub-µA quiescent draw. |
| PMIC Supervision | Industrial Sensor Node Reset |
|
Use Scenario: Validates stable output from buck/boost regulators in multi-rail PMIC designs for industrial gateways. IC Role / Device Role / Timing Role: Independent secondary supervisor verifying regulator integrity beyond primary PMIC fault reporting. Use Value: Adds fail-safe reset redundancy that survives PMIC firmware crashes or I²C bus lockups. |
Use Scenario: Provides robust reset signaling in vibration-prone factory-floor sensor nodes exposed to ESD and conducted transients. IC Role / Device Role / Timing Role: Immune-to-noise voltage monitor with 5% hysteresis and 17µs response for deterministic recovery. Use Value: Reduces field returns by 37% in Class A industrial deployments where supply instability causes intermittent lockups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB23DBZR | 2.3V threshold, ±2% accuracy, 0.5µA ICC, SOT23-3, push-pull active-low output | Lacks internal hysteresis; requires external RC network for noise immunity | Prefer when lowest possible ICC is critical and board space permits external hysteresis components |
| APX803S-23SA-7 | 2.3V threshold, ±2.5% accuracy, 1.2µA ICC, SOT23-3, open-drain active-low output, 5% hysteresis | Higher ICC and wider threshold tolerance; same pinout and function | Select for second-source assurance where identical functionality and footprint are mandatory |
Compared with PT7M6123CLTA3EX, TLV803EB23DBZR saves 0.4µA but adds design complexity, while APX803S-23SA-7 trades 0.3µA higher ICC for full cross-compatibility in high-volume manufacturing.
Availability
PT7M6123CLTA3EX is available at Aetrix Electronics and suitable for battery management systems, MCU reset supervision, and industrial sensor node designs requiring stable component supply and long-term lifecycle support.
Supply support for PT7M6123CLTA3EX 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 voltage monitoring in space-constrained, battery-operated embedded systems where precision, reliability, and minimal BOM count are critical.
FAQ
What is the exact detect threshold voltage and its tolerance over temperature?
The PT7M6123CLTA3EX has a nominal threshold voltage of 2.3V with ±1.5% accuracy at 25°C. Over the full –40°C to +85°C operating range, the threshold variation is ±2.5% × typical value, meaning VTH– remains within 2.2425V to 2.3575V under worst-case conditions.
Can the RST pin drive a 10kΩ pull-up to 5V directly?
Yes - the open-drain RST output is rated for 20mA sink current and guarantees VOL ≤ 0.3V at Isink = 4mA when VCC ≥ 2.5V. With a 10kΩ pull-up to 5V, the resulting sink current is 0.5mA, well within specification and ensuring clean logic-low assertion.
Is an external capacitor required on the VCC pin for stable operation?
No external capacitor is required for basic operation. However, the datasheet recommends placing ≥0.1µF ceramic decoupling capacitance close to the VCC pin to suppress high-frequency noise that could affect threshold stability during fast transients.
Does this device support reset timeout functionality?
No - the PT7M6123CLTA3EX is a pure voltage threshold detector with hysteresis and does not include built-in reset timeout (tRP). Its reset pulse duration matches the time VCC remains below VTH–, making it suitable for immediate-response supervision rather than delayed-release applications.
PT7M6123CLTA3EX 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:
- 2.3V
- 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
PT7M6123CLTA3EX FAQ
1.How can I place an order for PT7M6123CLTA3EX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M6123CLTA3EX 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 PT7M6123CLTA3EX reliable?
The price and inventory of PT7M6123CLTA3EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M6123CLTA3EX is usually 5 days.
3.What payment methods are accepted for PT7M6123CLTA3EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M6123CLTA3EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M6123CLTA3EX?
PT7M6123CLTA3EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M6123CLTA3EX 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 PT7M6123CLTA3EX?
For technical support, including PT7M6123CLTA3EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M6123CLTA3EX requirements.
6.How does Aetrix verify that PT7M6123CLTA3EX is sourced from the original manufacturer or authorized distributors?
All PT7M6123CLTA3EX 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 PT7M6123CLTA3EX meets industry standards.
7.What is the process for return or replacement of PT7M6123CLTA3EX?
All PT7M6123CLTA3EX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M6123CLTA3EX, 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 PT7M6123CLTA3EX part is unused and in its original packaging.
Return procedure for PT7M6123CLTA3EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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