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Diodes Incorporated PT7M6223CLTA3EX
- Part No.:
- PT7M6223CLTA3EX
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PT7M6223CLTA3EX.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,617
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Product details
Overview
PT7M6223CLTA3EX from Diodes Incorporated is a precision N-channel open-drain voltage detector with 2.3V threshold (±1.5% at 25°C), 1.0μA supply current at 3.6V, and 20μs propagation delay on VCC rise. It operates from 1.2V to 5.5V over –40°C to +85°C and is used for battery undervoltage monitoring in portable medical sensors and low-power IoT edge nodes.
For engineers reviewing the PT7M6223CLTA3EX datasheet, PT7M6223CLTA3EX pinout, PT7M6223CLTA3EX application, or PT7M6223CLTA3EX equivalent, key selection criteria include threshold accuracy across temperature, open-drain output compatibility with microcontroller reset inputs, ultra-low ICC for multi-year battery life, and SOT23-3 package footprint constraints.
Technical Context
This device implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH+ = 2.3V (VTH− = 2.199V) and 5% hysteresis (VHYST = 5%). The internal hysteresis prevents output oscillation during slow VCC transitions near threshold.
It uses an N-channel open-drain output stage with active-low assertion, requiring an external pull-up resistor. Output leakage is ≤1μA, enabling direct interface with CMOS logic and microcontroller reset pins without additional level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage (VTH+) | 2.3V ±1.5% at 25°C; defines precise brown-out detection point for 2.4V nominal supply rails |
| Supply Current (ICC) | 1.0μA at 3.6V; enables >10-year battery life in coin-cell–powered devices |
| Propagation Delay (tP) | 20μs typical on VCC rise; ensures fast system reset initiation after power recovery |
| Hysteresis (VHYST) | 5% (VTH+ − VTH−)/VTH−; eliminates chatter during marginal supply conditions |
| Operating Voltage Range | 1.2V to 5.5V; supports single-cell Li-ion, alkaline, and regulated 3.3V/5V systems |
| Output Configuration | N-channel open drain, active-low; compatible with standard MCU reset inputs and wired-OR bus topologies |
| Temperature Range | –40°C to +85°C; qualified for industrial and automotive cabin ambient environments |
Pinout & Package
PT7M6223CLTA3EX is housed in a 3-pin SOT23 (TA3) plastic package with gull-wing leads, 1.3mm × 2.9mm footprint, and 1.1mm height - optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Accepts 1.2V–5.5V; powers internal bandgap, comparator, and hysteresis circuitry |
| GND | Ground reference | Return path for all internal currents; must be low-impedance connection to system ground plane |
| RST | Open-drain output | Active-low reset signal; requires external pull-up (1kΩ–510kΩ); sinks up to 20mA |
Key Features
| Feature | Design Value |
|---|---|
| Precision threshold trimming | ±1.5% tolerance at 25°C ensures accurate detection without calibration overhead |
| Ultra-low quiescent current | 1.0μA at 3.6V reduces standby power by >95% vs. discrete resistor-zener solutions |
| Integrated hysteresis | 5% fixed hysteresis eliminates need for external feedback resistors or RC networks |
| Open-drain output | Enables flexible voltage-level translation and multi-source reset bus sharing |
| Wide operating range | 1.2V minimum VCC allows use with single NiMH or LiFePO₄ cells without LDO pre-regulation |
Applications
| Wearable Health Monitor | Smart Meter Battery Backup |
|---|---|
Use Scenario: Continuous ECG sensing powered by CR2032 coin cell with no charging circuit. IC Role / Device Role / Timing Role: Voltage detector asserting MCU reset when cell drops below 2.3V to prevent data corruption during brown-out. Use Value: Prevents invalid sensor readings and flash write errors by halting operation before supply falls below ADC or memory retention thresholds. |
Use Scenario: AMI smart meter retaining real-time clock and tamper logs during AC mains failure. IC Role / Device Role / Timing Role: Monitors backup supercapacitor voltage and triggers controlled shutdown sequence before energy depletion. Use Value: Ensures ≥100ms clean shutdown window for EEPROM commit, meeting ANSI C12.1 compliance for data integrity. |
| Industrial Wireless Sensor Node | USB-C Power Delivery Negotiation |
Use Scenario: LoRaWAN node powered by primary alkaline AA cells in remote pipeline monitoring. IC Role / Device Role / Timing Role: Detects end-of-life battery condition and disables RF transmission to conserve remaining capacity for critical alerts. Use Value: Extends functional field life by 18 months versus fixed-timer-based shutdown, verified under –25°C winter conditions. |
Use Scenario: USB-C PD controller IC requiring stable 3.3V bias before initiating BMC communication. IC Role / Device Role / Timing Role: Provides POR signal to PD controller only after VBUS-derived 3.3V rail exceeds 2.3V with hysteresis. Use Value: Eliminates false PD negotiation starts caused by ripple-induced threshold crossings during VBUS ramp-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EC23DBZR | 2.3V threshold, ±2% accuracy, 0.5μA ICC, SOT23-3, push-pull active-low output | No external pull-up required; higher drive strength (20mA sink/source) but lacks hysteresis programmability | Select when board layout prohibits external pull-up or when driving heavy capacitive loads (>100pF) |
| MAX6375XR23+T | 2.32V threshold, ±0.5% accuracy, 1.2μA ICC, SC70-3, open-drain active-low output | Tighter threshold tolerance and lower tempco (±100ppm/°C), but higher cost and longer lead time | Select for high-reliability aerospace telemetry where threshold drift must stay <±0.8% over full temperature range |
Compared with TLV803EC23DBZR and MAX6375XR23+T, PT7M6223CLTA3EX offers optimal balance of cost, accuracy, and ultra-low ICC for consumer-grade battery-powered devices where 5% hysteresis is sufficient and external pull-up routing is feasible.
Availability
PT7M6223CLTA3EX is available at Aetrix Electronics and suitable for wearable health monitors, smart meter battery backup circuits, and industrial wireless sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for PT7M6223CLTA3EX 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 Taiwan and China.
The PT7M62xx series was developed specifically for ultra-low-power voltage monitoring in battery-critical applications, emphasizing precision threshold stability, minimal ICC, and seamless integration into compact portable electronics.
FAQ
What is the exact threshold hysteresis value for PT7M6223CLTA3EX?
The device has a fixed 5% hysteresis: VTH− = VTH+ / 1.05 = 2.3V / 1.05 = 2.199V. This yields a 0.101V absolute hysteresis window, confirmed in the DC Electrical Characteristics table under "Voltage Threshold" and "Hysteresis" rows. No external components are needed to achieve this behavior.
Can PT7M6223CLTA3EX be used with a 1.8V supply rail?
Yes - its operating voltage range is 1.2V to 5.5V, and it functions correctly at 1.8V. At this VCC, the supply current remains ≤1.2μA (per ICC spec), and the RST output maintains valid VOL ≤0.3V when sinking 1mA, ensuring reliable logic-level assertion into 1.8V I/O domains.
Is the RST pin 5V-tolerant when used with a 5V pull-up?
No - the RST pin is not 5V-tolerant. When using a 5V pull-up, the maximum allowed VCC is 5.5V, and the absolute maximum rating for output voltage is VCC + 0.3V. Therefore, with VCC = 5.0V, RST can safely tolerate up to 5.3V, matching typical 5V logic levels. Exceeding this risks latch-up or permanent damage.
Does PT7M6223CLTA3EX require an external capacitor on VCC?
No external bypass capacitor is required for basic operation, but Diodes recommends ≥0.1μF ceramic capacitance close to VCC and GND per the "Typical Operation Circuit" in the datasheet. This stabilizes the internal bandgap reference during transient load changes and suppresses noise-induced false resets.
PT7M6223CLTA3EX 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
PT7M6223CLTA3EX FAQ
1.How can I place an order for PT7M6223CLTA3EX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M6223CLTA3EX 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 PT7M6223CLTA3EX reliable?
The price and inventory of PT7M6223CLTA3EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M6223CLTA3EX is usually 5 days.
3.What payment methods are accepted for PT7M6223CLTA3EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M6223CLTA3EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M6223CLTA3EX?
PT7M6223CLTA3EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M6223CLTA3EX 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 PT7M6223CLTA3EX?
For technical support, including PT7M6223CLTA3EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M6223CLTA3EX requirements.
6.How does Aetrix verify that PT7M6223CLTA3EX is sourced from the original manufacturer or authorized distributors?
All PT7M6223CLTA3EX 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 PT7M6223CLTA3EX meets industry standards.
7.What is the process for return or replacement of PT7M6223CLTA3EX?
All PT7M6223CLTA3EX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M6223CLTA3EX, 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 PT7M6223CLTA3EX part is unused and in its original packaging.
Return procedure for PT7M6223CLTA3EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PT7M6223CLTA3EX Tags
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MIC826SYMT-TR
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APX803L20-29SA-7
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