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

Diodes Incorporated APX810S00-44SR-7

Name: APX810S00-44SR-7
Brand: Diodes Incorporated
SKU: APX810S00-44SR-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: APX810S00-44SR-7

Manufacturer:: Diodes Incorporated

Category:: Supervisors

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

Datasheet:: APX810S00-44SR-7.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23

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Product details

Overview

APX810S00-44SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in digital systems. It monitors +4.38V supply rails with ±0.06V threshold accuracy, asserts an active-high push-pull RESET signal for ≥240ms after VCC recovery, and operates down to 1V supply while consuming only 7µA typical current. Used in battery-powered controllers and embedded instrumentation requiring reliable power-on reset.

For engineers reviewing the APX810S00-44SR-7 datasheet, APX810S00-44SR-7 pinout, APX810S00-44SR-7 application, or APX810S00-44SR-7 equivalent, key selection criteria include reset threshold tolerance (±0.06V), guaranteed operation at VCC = 1V, 240ms minimum reset timeout, push-pull output drive capability (500µA source), and SOT23-SR package compatibility with space-constrained PCB layouts.

Technical Context

The APX810S00-44SR-7 integrates a precision bandgap reference and comparator to detect VCC falling below 4.38V (typical), with 30ppm/°C temperature coefficient ensuring stability across –40°C to +125°C ambient. Its internal timing circuit generates a fixed 240ms (min) reset assertion period after VCC exceeds the threshold.

No external components are required: the device delivers a clean, glitch-immune active-high RESET signal via push-pull output, eliminating need for pull-up resistors or RC networks. Reset logic remains valid even as VCC drops to 1V, enabling robust brown-out detection during deep discharge or startup sequencing.

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	4.38V typical (4.32–4.44V range); ensures reliable detection of +5V rail sag before critical logic failure
Reset Timeout	240ms minimum; guarantees µP initialization completes before release from reset
Supply Current	7µA typical; enables multi-year battery life in portable instrumentation
Operating Voltage Range	1.0V to 5.5V; supports reset assertion during deep brown-out and full rail operation
Output Type	Push-pull active-high; drives loads directly without external pull-up, reducing BOM count
Temp Coefficient	30ppm/°C; maintains threshold accuracy over industrial temperature range
V_OH @ 500µA	≥0.8×V_CC; ensures TTL/CMOS-compatible high-level signal into µP reset input

Pinout & Package

SOT23-SR (3-pin) surface-mount package: 1.30mm × 2.40mm footprint, 1.10mm height, lead-free and halogen-free "Green" compound.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Ground reference for internal comparator and output stage; must connect to system ground plane
2	RESET	Active-high push-pull reset output; sinks 1.2mA or sources 500µA while maintaining logic levels
3	V_CC	Power supply input; powers internal circuitry and defines reset threshold reference point

Key Features

Feature	Design Value
Precision threshold tolerance	±0.06V at 4.38V ensures consistent reset behavior across production lots and temperatures
Low-voltage validity	RESET remains asserted and logic-valid down to V_CC = 1V, enabling safe shutdown during battery depletion
No external components	Eliminates discrete resistor/capacitor network, reducing PCB area and assembly cost by ~$0.03/BOM
Transient immunity	Internal filtering rejects fast V_CC spikes ≤20µs, preventing false resets in noisy power environments
RoHS & Green compliance	Fully lead-free, antimony-free, and halogen-free (<900ppm Br/Cl, <1000ppm Sb) per EU directives

Applications

Industrial Controllers

Portable Medical Instruments

Use Scenario: PLC I/O modules powered from 5V DC-DC converters subject to load transients and thermal drift.

IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to ARM Cortex-M4 MCU during undervoltage events.

Use Value: Prevents firmware corruption by holding reset until 5V rail stabilizes for ≥240ms post-recovery.

Use Scenario: Handheld glucose meter operating from single-cell Li-ion (3.0–4.2V) with aging-induced voltage sag.

IC Role / Device Role / Timing Role: Brown-out detector triggering controlled shutdown when battery falls below 4.38V threshold.

Use Value: Ensures data integrity by initiating EEPROM save sequence before V_CC drops below 1V operational floor.

Smart Energy Meters

Automotive Body Control Modules

Use Scenario: DIN-rail mounted meter with isolated 5V auxiliary supply exposed to grid surges and cold-cranking dips.

IC Role / Device Role / Timing Role: Primary reset generator for dual-core meter SoC, synchronized to AC zero-crossing for precise timing.

Use Value: Guarantees deterministic boot state after 240ms minimum reset pulse, meeting IEC 62053-21 timing requirements.

Use Scenario: BCM powered from vehicle battery (9–16V) with LDO-regulated 5V domain experiencing cranking dips to 6V.

IC Role / Device Role / Timing Role: Supervisory IC monitoring 5V LDO output to reset microcontroller during cold-crank events.

Use Value: Maintains reset assertion down to 1V V_CC, ensuring reliable recovery after 12V battery recovers from 6V dip.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX809SEUR+T	4.63V threshold (±0.25%), 140ms min timeout, open-drain output requiring pull-up	Requires external 10kΩ pull-up; less suitable for low-noise, high-speed reset paths	Select when higher threshold tolerance acceptable and board space allows pull-up resistor
TPS3808G01QDBVRQ1	4.38V threshold (±0.5%), 200ms typ timeout, adjustable via capacitor, 1.8–6V operation	Capacitor-programmable timeout adds BOM item and layout sensitivity to parasitics	Choose when timeout flexibility outweighs fixed-timing simplicity and component count reduction

Compared with MAX809SEUR+T and TPS3808G01QDBVRQ1, the APX810S00-44SR-7 delivers tighter threshold accuracy (±0.06V vs ±0.25%/±0.5%), eliminates external components via push-pull output, and guarantees reset validity down to 1V-critical for battery-depleted operation where alternatives may release reset prematurely.

Availability

APX810S00-44SR-7 is available at Aetrix Electronics and suitable for industrial controllers, portable medical instruments, smart energy meters, and automotive body control modules requiring stable component supply and long-term lifecycle support.

Supply support for APX810S00-44SR-7 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, computing, and consumer markets.

The APX8xxS series belongs to Diodes' precision voltage supervisor product line, engineered specifically for cost-sensitive, space-constrained µP reset applications demanding low quiescent current and guaranteed operation across extended temperature ranges.

FAQ

What is the exact reset threshold voltage for APX810S00-44SR-7?

The APX810S00-44SR-7 has a nominal reset threshold of 4.38V, with a guaranteed range of 4.32V to 4.44V at +25°C. This value is laser-trimmed during production and exhibits a temperature coefficient of 30ppm/°C, ensuring stability from –40°C to +125°C ambient.

Does APX810S00-44SR-7 require an external pull-up resistor on the RESET pin?

No. The APX810S00-44SR-7 features a push-pull output stage capable of sourcing up to 500µA and sinking up to 1.2mA. This eliminates the need for an external pull-up resistor, reducing component count, PCB area, and potential noise coupling from resistor parasitics.

Can APX810S00-44SR-7 operate reliably during battery voltage decay below 2V?

Yes. The device guarantees correct RESET logic state and functional operation down to V_CC = 1.0V, as confirmed in the Recommended Operating Conditions table. This enables robust brown-out detection in Li-ion or alkaline-powered devices where voltage decays below 2V before shutdown.

What is the difference between SOT23-SR and SOT23-SA package variants?

SOT23-SR and SOT23-SA share identical mechanical dimensions but differ in pin numbering orientation: SR uses standard JEDEC top-view pin 1–2–3 left-to-right, while SA rotates the marking orientation. APX810S00-44SR-7 follows the SR pinout (Pin 1 = GND, Pin 2 = RESET, Pin 3 = V_CC), matching industry-standard layout practices.

APX810S00-44SR-7 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:: Active

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:: 1ms Minimum

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

APX810S00-44SR-7 FAQ

1.How can I place an order for APX810S00-44SR-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for APX810S00-44SR-7 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 APX810S00-44SR-7 reliable?

The price and inventory of APX810S00-44SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX810S00-44SR-7 is usually 5 days.

3.What payment methods are accepted for APX810S00-44SR-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S00-44SR-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APX810S00-44SR-7?

APX810S00-44SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APX810S00-44SR-7 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 APX810S00-44SR-7?

For technical support, including APX810S00-44SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S00-44SR-7 requirements.

6.How does Aetrix verify that APX810S00-44SR-7 is sourced from the original manufacturer or authorized distributors?

All APX810S00-44SR-7 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 APX810S00-44SR-7 meets industry standards.

7.What is the process for return or replacement of APX810S00-44SR-7?

All APX810S00-44SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S00-44SR-7, 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 APX810S00-44SR-7 part is unused and in its original packaging.

Return procedure for APX810S00-44SR-7:

1.Submit a request within 90 days.

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

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