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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Diodes Incorporated PT7M7810MTEX

Name: PT7M7810MTEX
Brand: Diodes Incorporated
SKU: PT7M7810MTEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PT7M7810MTEX

Manufacturer:: Diodes Incorporated

Category:: Supervisors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: PT7M7810MTEX.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PT7M7810MTEX from Diodes Incorporated is a precision microprocessor (μP) supervisor IC with 4.38V reset threshold, 200ms reset pulse width, and manual-reset input-designed to monitor V_CC in embedded systems during power-up, brownout, and shutdown. It asserts active-low RESET when supply drops below threshold and guarantees valid output down to V_CC = 1.0V, supporting reliable boot sequencing in networking and server applications.

For engineers reviewing the PT7M7810MTEX datasheet, PT7M7810MTEX pinout, PT7M7810MTEX application, or PT7M7810MTEX equivalent, this device delivers deterministic reset timing, CMOS-compatible manual reset, and guaranteed operation across –40°C to +85°C-critical for industrial embedded designs requiring stable power monitoring without watchdog or WDI functionality.

Technical Context

The PT7M7810MTEX implements a voltage-monitoring architecture with fixed 4.38V threshold (±2.5% over temperature), hysteresis of 50mV, and internal 200ms timeout timer. It lacks watchdog input (WDI) and active-high RESET output-distinguishing it from PT7M7811/7812 variants-and relies solely on V_CC sensing and MR assertion for reset generation.

Its SOT23-3 package integrates only V_CC, GND, and MR pins; RESET is open-drain (per Function Comparison Table), requiring external pull-up. The device draws ≤30µA at 5V and operates from 1.0V to 5.5V, enabling compatibility with low-voltage microcontrollers and battery-backed systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	4.38V ±2.5% over –40°C to +85°C - ensures accurate brownout detection for 5V nominal rails
Reset Pulse Width	200ms typ. - provides sufficient time for μP initialization before release
Supply Range	1.0V to 5.5V - supports operation during deep brownout and low-power wake-up
Quiescent Current	≤30µA at 5V - minimizes impact on standby power in battery-critical systems
RESET Output Type	Open-drain - enables wired-OR configuration and flexible voltage-level translation
MR Input Logic	CMOS-compatible active-low with internal pull-up - simplifies push-button interface without external resistor
Operating Temp	–40°C to +85°C - qualified for industrial-grade embedded and networking equipment

Pinout & Package

SOT23-3 plastic package with gull-wing leads, 1.3mm × 2.9mm footprint, 1.45mm height, and moisture sensitivity level 1 (MSL1).

Pin/Terminal	Circuit Role	Design Meaning
V_CC	Power supply input	Monitored rail; RESET asserted when voltage falls below 4.38V threshold
GND	Ground reference	Common return for all internal circuitry and reset timing logic
MR	Manual-reset input	Active-low CMOS input; forces RESET low for ≥200ms after release; internal pull-up eliminates external resistor

Key Features

Feature	Design Value
Precision voltage monitoring	4.38V threshold with ±2.5% tolerance over full temperature range ensures consistent brownout response
Deterministic reset timing	Guaranteed 200ms reset pulse width prevents premature μP release during unstable power recovery
Low-voltage operation	Valid RESET assertion down to V_CC = 1.0V enables robust reset behavior even during deep undervoltage events
Minimal BOM overhead	Internal MR pull-up resistor eliminates need for external component in manual-reset implementations
Low quiescent current	≤30µA supply current reduces standby power consumption in always-on embedded systems

Applications

Networking Equipment

Industrial PLCs

Use Scenario: Monitoring 5V auxiliary supply in Ethernet switches during AC loss or hot-swap events.

IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET to hold ARM Cortex-M7 core in known state until rail stabilizes.

Use Value: Prevents firmware corruption by guaranteeing 200ms minimum reset hold time after V_CC recovers above 4.38V.

Use Scenario: Supervising 3.3V I/O rail in programmable logic controller backplane modules.

IC Role / Device Role / Timing Role: Brownout detector triggering controlled shutdown sequence via open-drain RESET tied to FPGA configuration controller.

Use Value: Enables safe state retention using 1.0V minimum operating voltage-ensures reset remains asserted through final 100mV of rail collapse.

Server Management Controllers

Medical Diagnostic Devices

Use Scenario: Power-good monitoring for BMC (Baseboard Management Controller) on 5V management rail.

IC Role / Device Role / Timing Role: Supervisor providing clean reset signal to ARM-based BMC during cold boot and thermal throttling-induced voltage sag.

Use Value: 4.38V threshold aligns with ATX 5V tolerance (±5%), eliminating false resets during transient load steps.

Use Scenario: Battery-backed real-time clock (RTC) power supervision in portable ultrasound units.

IC Role / Device Role / Timing Role: Low-voltage detector asserting RESET to halt data acquisition when main Li-ion drops below 4.38V (end-of-charge).

Use Value: Open-drain output allows direct connection to RTC's active-low reset pin without level-shifting components.

Equivalent & Alternatives

The following parts are listed as comparable options for similar μP supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX809SEUR+T	4.63V threshold, 140ms min reset pulse, SOT23-3, no MR input	Lacks manual reset; suited for simpler power-on-only supervision	Select when manual reset is unnecessary and higher threshold tolerance is acceptable
TPS3808G33DBVR	3.3V threshold, adjustable delay (200ms/400ms), SOT23-6, includes WDI	Includes watchdog and configurable timing but requires 6-pin layout and external capacitor	Choose when system-level watchdog monitoring and timing flexibility outweigh BOM simplicity

Compared with MAX809SEUR+T and TPS3808G33DBVR, PT7M7810MTEX uniquely combines fixed 4.38V detection, integrated MR pull-up, and open-drain output in a 3-pin SOT23-optimizing for minimal footprint and deterministic reset in cost-sensitive industrial controllers.

Availability

PT7M7810MTEX is available at Aetrix Electronics and suitable for networking equipment, industrial PLCs, and server management controllers requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for PT7M7810MTEX 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 China, Taiwan, and the U.S.

The PT7M78xx family targets μP power-supply reliability in embedded systems-designed to replace discrete resistor-capacitor reset networks with precision, low-power, and temperature-stable supervision.

FAQ

What is the reset threshold voltage for PT7M7810MTEX and how does it vary with temperature?

The PT7M7810MTEX has a nominal reset threshold of 4.38V, with ±2.5% variation across the full operating temperature range of –40°C to +85°C. This specification is guaranteed per DC Electrical Characteristics table (Page 5), ensuring consistent brownout detection regardless of ambient conditions.

Does PT7M7810MTEX include a watchdog timer function?

No. PT7M7810MTEX does not include a watchdog input (WDI) or associated timing circuitry. Per the Function Comparison Table (Page 2), only PT7M7811, PT7M7812, PT7M7823–25 variants support watchdog functionality-making PT7M7810MTEX ideal for applications requiring pure voltage supervision without software interaction.

What type of RESET output does PT7M7810MTEX provide and what are its drive requirements?

PT7M7810MTEX provides an open-drain RESET output, requiring an external pull-up resistor to the target logic rail. Its VOL is ≤0.4V at 3.2mA sink current (V_CC ≥4.5V), enabling direct interface with 3.3V or 5V microcontrollers without level shifters.

Can PT7M7810MTEX operate reliably at V_CC below 2.0V?

Yes. The device guarantees valid RESET assertion down to V_CC = 1.0V, as stated in the "Description" section (Page 1) and confirmed in DC Electrical Characteristics (Page 5). This enables fail-safe reset behavior during deep brownout conditions where other supervisors may lose functionality.

PT7M7810MTEX 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:: 4.38V

Output:: Push-Pull, Totem Pole

Reset:: Active High

Reset Timeout:: 140ms Minimum

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

PT7M7810MTEX FAQ

1.How can I place an order for PT7M7810MTEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PT7M7810MTEX 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 PT7M7810MTEX reliable?

The price and inventory of PT7M7810MTEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M7810MTEX is usually 5 days.

3.What payment methods are accepted for PT7M7810MTEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M7810MTEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PT7M7810MTEX?

PT7M7810MTEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PT7M7810MTEX 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 PT7M7810MTEX?

For technical support, including PT7M7810MTEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M7810MTEX requirements.

6.How does Aetrix verify that PT7M7810MTEX is sourced from the original manufacturer or authorized distributors?

All PT7M7810MTEX 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 PT7M7810MTEX meets industry standards.

7.What is the process for return or replacement of PT7M7810MTEX?

All PT7M7810MTEX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M7810MTEX, 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 PT7M7810MTEX part is unused and in its original packaging.

Return procedure for PT7M7810MTEX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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