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Diodes Incorporated APX810S05-29SR-7
- Part No.:
- APX810S05-29SR-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
APX810S05-29SR-7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,411
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Product details
Overview
APX810S05-29SR-7 from Diodes Incorporated is a micro-power voltage detector IC designed for supervisory reset monitoring in microprocessor and digital systems. It provides active-high push-pull RESET output with 2.93 V threshold (±0.04 V), 50 ms typical reset timeout, 7 µA supply current, and guaranteed operation down to VCC = 1.0 V - used in battery-powered controllers and portable instrumentation.
For engineers reviewing the APX810S05-29SR-7 datasheet, APX810S05-29SR-7 pinout, APX810S05-29SR-7 application, or APX810S05-29SR-7 equivalent, key selection criteria include reset threshold accuracy at temperature, push-pull drive capability, low ICC across -40°C to +125°C, and SOT23-SR package compatibility with space-constrained PCB layouts.
Technical Context
The APX810S05-29SR-7 integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.93 V threshold. Its internal timing circuit generates a minimum 50 ms active-high RESET pulse after VCC rises above threshold, with delay stability maintained over full industrial temperature range (-40°C to +125°C).
Designed for immunity to fast transients, the device asserts RESET when VCC drops below VTH and holds it valid until VCC exceeds VTH + hysteresis (typ. 100 mV), with output logic state guaranteed down to 1.0 V supply - enabling reliable brown-out detection in low-voltage embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93 V (typ.), ±0.04 V tolerance - ensures accurate 2.9 V supply monitoring for 3.0 V/3.3 V systems |
| Reset Timeout | 50 ms (typ.) - provides sufficient hold time for µP initialization before release |
| Supply Current | 7 µA (typ.) - enables multi-year operation on coin-cell batteries |
| Operating Voltage Range | 1.0 V to 5.5 V - supports valid reset assertion during deep brown-out conditions |
| Output Type | Push-pull active-high - eliminates external pull-up resistor, drives CMOS/TTL loads directly |
| Temp Coefficient | 30 ppm/°C - maintains threshold stability across -40°C to +125°C ambient |
| Reset Delay | 20 µs (max) - responds rapidly to supply dips without false triggering |
Pinout & Package
The APX810S05-29SR-7 is housed in a RoHS-compliant, halogen-free SOT23-3 (SR) package with 1.3 mm × 2.4 mm footprint and 0.95 mm height, optimized for automated placement and thermal performance (θJA = 232°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection |
| 2 | RESET | Active-high push-pull output; sinks up to 3.2 mA or sources 150 µA at VCC ≥ 1.8 V |
| 3 | VCC | Power supply input; powers internal circuitry and defines reset threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.93 V threshold | ±0.04 V tolerance ensures consistent reset behavior across production lots and temperature |
| 50 ms factory-trimmed timeout | Eliminates need for external RC timing components while guaranteeing µP boot readiness |
| 1.0 V minimum operating voltage | Enables last-chance reset assertion during severe brown-out before system collapse |
| Push-pull active-high output | Directly interfaces with µP RESET# pins without pull-up resistors or level-shifting |
| 7 µA supply current | Reduces standby power by >90% vs. legacy reset ICs, critical for battery longevity |
Applications
| Battery-Powered IoT Sensor Node | Industrial PLC I/O Module |
|---|---|
Use Scenario: A wireless temperature sensor operates on CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 3.0 V LDO output and asserts active-high RESET to MSP430F5xx during voltage sag below 2.93 V. Use Value: Prevents firmware corruption during brown-out by holding µP in reset until stable supply returns for ≥50 ms. | Use Scenario: DIN-rail mounted I/O module uses isolated 3.3 V rail for digital inputs and FPGA configuration. IC Role / Device Role / Timing Role: Supervises 3.3 V supply to Xilinx Spartan-7 FPGA; RESET signal initiates configuration reload sequence. Use Value: Guarantees FPGA starts only after clean 3.3 V ramp-up, avoiding bitstream load failure due to marginal voltage. |
| Medical Handheld Diagnostic Device | Automotive Body Control Module (BCM) |
Use Scenario: Portable ECG reader powered by rechargeable Li-ion with dual 3.3 V/1.8 V regulators. IC Role / Device Role / Timing Role: Detects 3.3 V rail collapse and triggers active-high RESET to ARM Cortex-M4 core and analog front-end ASIC. Use Value: Ensures analog acquisition circuitry resets synchronously with processor, eliminating data offset drift post-brown-out. | Use Scenario: BCM supplies 5.0 V to LIN transceivers and 3.3 V to microcontroller; subject to load dump and cold crank. IC Role / Device Role / Timing Role: Monitors 3.3 V domain and asserts RESET to Infineon TC375 during VCC dip below 2.93 V during cranking. Use Value: Maintains reset assertion for full 50 ms even if supply recovers transiently, preventing MCU lockup during engine start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G01DBVR | 2.93 V threshold, 200 ms timeout, 1.6 µA ICC - longer timeout, lower current | Requires external capacitor for timeout adjustment; not pin-compatible | Select when extended reset hold time is needed and ultra-low ICC is critical |
| MAX809SEUR+T | 2.93 V threshold, 240 ms timeout, 10 µA ICC - higher current, fixed long timeout | SOT23-3 package but active-low output; requires logic inversion for active-high interface | Select only if board layout allows signal inversion and 240 ms hold satisfies system boot timing |
Compared with TPS3808G01DBVR and MAX809SEUR+T, the APX810S05-29SR-7 delivers optimal balance of precise 2.93 V detection, 50 ms factory-set timeout, and true active-high push-pull drive - eliminating design compromises in space- and power-constrained µP systems.
Availability
APX810S05-29SR-7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial PLC modules, medical handheld devices, and automotive body control units requiring stable component supply with guaranteed long-term sourcing.
Supply support for APX810S05-29SR-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 APX809S/810S series belongs to Diodes' micro-power voltage supervisor product line, engineered specifically for cost-sensitive, space-constrained embedded systems requiring robust brown-out detection without external components.
FAQ
What is the exact reset threshold voltage and its tolerance for APX810S05-29SR-7?
The APX810S05-29SR-7 has a nominal reset threshold of 2.93 V with a guaranteed range of 2.89 V to 2.97 V at +25°C. This tolerance remains within ±0.04 V across the full operating temperature range of -40°C to +125°C, as specified in the DS39140 datasheet Table 1.
Does APX810S05-29SR-7 require an external pull-up resistor on the RESET pin?
No. The APX810S05-29SR-7 features a push-pull output stage that actively drives HIGH (VOH ≥ 0.8×VCC) and LOW (VOL ≤ 0.3 V) without external components. This eliminates the need for a pull-up resistor and ensures deterministic logic levels under all valid supply conditions.
Can APX810S05-29SR-7 operate reliably at VCC = 1.2 V?
Yes. The device guarantees correct RESET logic state and functional operation down to VCC = 1.0 V, per Recommended Operating Conditions (DS39140 p.4). At 1.2 V, it will assert RESET if VCC falls below 2.93 V (i.e., always asserted), and release it only once VCC exceeds the threshold - enabling fail-safe behavior during deep undervoltage.
What is the difference between SOT23-SR and SOT23-SA package variants?
SOT23-SR and SOT23-SA are mechanically identical 3-pin packages but differ in leadframe plating and marking layout. SR uses matte tin plating and specific top-side marking (e.g., "SR" suffix), while SA uses bright tin. Both meet the same thermal, electrical, and RoHS specifications - interchangeability is confirmed by Diodes' packaging documentation (DS39140 p.7–8).
APX810S05-29SR-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:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
APX810S05-29SR-7 FAQ
1.How can I place an order for APX810S05-29SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX810S05-29SR-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 APX810S05-29SR-7 reliable?
The price and inventory of APX810S05-29SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX810S05-29SR-7 is usually 5 days.
3.What payment methods are accepted for APX810S05-29SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S05-29SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX810S05-29SR-7?
APX810S05-29SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX810S05-29SR-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 APX810S05-29SR-7?
For technical support, including APX810S05-29SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S05-29SR-7 requirements.
6.How does Aetrix verify that APX810S05-29SR-7 is sourced from the original manufacturer or authorized distributors?
All APX810S05-29SR-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 APX810S05-29SR-7 meets industry standards.
7.What is the process for return or replacement of APX810S05-29SR-7?
All APX810S05-29SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S05-29SR-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 APX810S05-29SR-7 part is unused and in its original packaging.
Return procedure for APX810S05-29SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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