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STMicroelectronics STM6710FWB6F
- Part No.:
- STM6710FWB6F
- Manufacturer:
- STMicroelectronics
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
STM6710FWB6F.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,236
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Product details
Overview
STM6710FWB6F from STMicroelectronics is a quad-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring 5.0 V (–5% threshold), 3.3 V (–5%), 1.8 V (–5%), and an adjustable input with 0.62 V ±1.5% reference. It delivers 200 ms reset timeout, <35 µA quiescent current, and open-drain RESET output with 10 µA internal weak pull-up to V2IN. Used in server/workstation power sequencing to ensure reliable boot under multi-rail brownout conditions.
For engineers reviewing the STM6710FWB6F datasheet, STM6710FWB6F pinout, STM6710FWB6F application, or STM6710FWB6F equivalent, key selection criteria include factory-trimmed triple fixed thresholds (5.0 V/3.3 V/1.8 V at –5%), adjustable fourth input capability, 200 ms reset timeout, operation down to V1IN/V2IN = 1.0 V, and immunity to supply transients in telecom and computing systems.
Technical Context
The STM6710FWB6F functions as a quad-supply monitor where V1IN (5.0 V), V3IN (3.3 V), V4IN (1.8 V) are factory-set at –5% tolerance, while V2IN serves as both power supply and monitored rail. Its internal comparator architecture uses precision bandgap references and 0.3% hysteresis to reject noise and transient-induced false resets.
Reset assertion is active-low and open-drain, with internal 10 µA weak pull-up to V2IN; RESET remains valid as long as V1IN ≥ 1.0 V or V2IN ≥ 1.0 V. After all inputs exceed thresholds, RESET deasserts after a guaranteed 140–280 ms timeout (200 ms typ.), ensuring stable system initialization before processor release.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.2 V to 5.5 V (V2IN); supports 1.8 V/2.5 V/3.0 V/3.3 V/5.0 V rails with factory-trimmed thresholds |
| Reset threshold accuracy | ±1.5% for adjustable input (0.62 V); –5% tolerance for 5.0 V/3.3 V/1.8 V fixed thresholds (e.g., 4.63 V typ. for 5 V) |
| Reset timeout period | 140–280 ms (200 ms typical); ensures sufficient hold time for CPU and peripheral stabilization post-power-up |
| Quiescent current | <35 µA at 3.3 V; enables use in always-on subsystems without compromising battery or standby power budgets |
| Input hysteresis | 0.3% of threshold voltage; prevents oscillation during slow-rising/falling supply edges or noisy environments |
| Operating temperature | –40 °C to +85 °C; qualified for industrial-grade embedded computing and telecom infrastructure applications |
| RESET output type | Open-drain with 10 µA internal weak pull-up to V2IN; eliminates need for external pull-up in many designs |
Pinout & Package
SOT23-6 (WB) package: 6-pin, surface-mount, RoHS-compliant small-outline transistor outline with 0.95 mm pitch; footprint per Figure 10 (DocID16887 Rev 5).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 V1IN | Fixed-threshold input | Monitors 5.0 V supply at –5% threshold (4.63 V typ.); asserts RESET if voltage drops below trip point |
| 2 V2IN | Power supply & monitored input | Device power source and third monitored rail; also used as pull-up target for open-drain RESET |
| 3 V3IN | Fixed-threshold input | Monitors 3.3 V supply at –5% threshold (3.08 V typ.); supports independent brownout detection |
| 4 V4IN | Fixed-threshold input | Monitors 1.8 V supply at –5% threshold (1.67 V typ.); enables core logic rail supervision |
| 5 GND | Reference ground | Common return path for all internal comparators and RESET driver; must be low-impedance connection |
| 6 RESET | Active-low open-drain output | Drives low when any monitored voltage fails; requires external pull-up only if interfacing to higher-voltage logic |
Key Features
| Feature | Design Value |
|---|---|
| Quad-voltage monitoring | Simultaneously supervises four independent rails (5.0 V, 3.3 V, 1.8 V, plus V2IN) in one 6-pin SOT23 package |
| Factory-trimmed thresholds | Three precise fixed thresholds (5.0 V/3.3 V/1.8 V at –5%) eliminate external resistor networks for standard rails |
| Adjustable fourth input | VxIN reference = 0.62 V ±1.5%; enables custom threshold setting via resistor divider for non-standard voltages |
| Transient-immune reset logic | Immunity to fast supply glitches due to internal hysteresis and propagation delay filtering (30 µs min. response) |
| Low-voltage validity | RESET remains functional down to V1IN = 1.0 V or V2IN = 1.0 V - critical for graceful shutdown in deep brownout |
Applications
| Server Power Sequencing | Network Switch Supervision |
|---|---|
|
Use Scenario: Multi-rail ATX or custom server motherboard with 5 V, 3.3 V, 1.8 V, and auxiliary 3.3 V supplies. IC Role / Device Role / Timing Role: Quad-voltage supervisor ensuring coordinated reset assertion until all rails stabilize above thresholds. Use Value: Eliminates need for four discrete supervisors; 200 ms timeout guarantees BIOS and BMC firmware load completion before CPU release. |
Use Scenario: Layer-3 Ethernet switch ASIC requiring synchronized reset across core, I/O, and PHY power domains. IC Role / Device Role / Timing Role: Monitors 5 V (management), 3.3 V (ASIC core), 1.8 V (DDR interface), and V2IN (PHY supply) with single RESET signal. Use Value: Prevents partial initialization failures by holding reset until all domains reach nominal voltage - reducing field return rates. |
| Desktop Motherboard VRM Monitoring | Telecom Line Card Boot Integrity |
|
Use Scenario: High-end desktop motherboard with discrete VRMs delivering 5 V, 3.3 V, 1.8 V, and auxiliary 3.3 V to chipset and memory controller. IC Role / Device Role / Timing Role: Detects undervoltage on any rail and asserts global RESET; V2IN powers device and monitors auxiliary rail. Use Value: Enables early fault detection before PCIe enumeration or memory training begins - improving POST reliability. |
Use Scenario: Carrier-grade line card with redundant 5 V and 3.3 V supplies, plus 1.8 V DSP core and adjustable bias rail. IC Role / Device Role / Timing Role: Supervises primary rails and uses adjustable V4IN to monitor custom analog bias voltage (e.g., 2.2 V via resistor divider). Use Value: Ensures deterministic boot even during hot-swap events by validating all critical supplies before firmware execution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Triple fixed thresholds (3.3 V/2.5 V/1.8 V), no 5 V option; 200 ms timeout; 1.8–6 V supply; 2.5 µA IQ | Lacks native 5 V monitoring - requires external divider for 5 V rail; better suited for low-power portable systems | Select when ultra-low IQ (<3 µA) is prioritized over 5 V rail support and board space is constrained |
| MAX6816EUT+T | Dual voltage monitor (adjustable only); 140 ms timeout; 1.6–5.5 V supply; 15 µA IQ; no factory-fixed thresholds | Requires full resistor-divider design for all rails; no built-in 5 V/3.3 V/1.8 V presets - increases BOM and layout complexity | Choose only if custom threshold flexibility across all inputs outweighs need for plug-and-play fixed-rail supervision |
Compared with TPS3808G33DBVR and MAX6816EUT+T, the STM6710FWB6F uniquely integrates factory-trimmed 5 V/3.3 V/1.8 V monitoring in one SOT23-6 package, eliminating design-in effort for standard rails while maintaining 200 ms timeout and 1 V minimum operating voltage - making it optimal for compute and telecom infrastructure where reliability and time-to-market matter.
Availability
STM6710FWB6F is available at Aetrix Electronics and suitable for server/workstations, networking equipment, and desktop computers requiring stable component supply with industrial temperature range (–40 °C to +85 °C) and RoHS compliance.
Supply support for STM6710FWB6F 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The STM67xx series targets high-reliability power management in multi-rail digital systems, delivering precision voltage supervision with minimal footprint and guaranteed reset timing - specifically engineered for telecom infrastructure, enterprise computing, and embedded control applications.
FAQ
What is the exact reset threshold for the 5.0 V input on STM6710FWB6F?
The V1IN pin on STM6710FWB6F is factory-trimmed to monitor 5.0 V at –5% tolerance, with a typical threshold of 4.63 V (min 4.50 V, max 4.75 V). This value is confirmed in Table 5 of the official datasheet (DocID16887 Rev 5), and applies across the full operating temperature range of –40 °C to +85 °C.
Can V2IN be left unconnected if using only three supply rails?
No - V2IN is the device's power supply pin and must be connected to a valid voltage between 1.2 V and 5.5 V. In STM6710 configuration, V2IN is both powered and monitored; disconnecting it disables the IC. For triple-monitor operation, use STM6700 variants where V2IN serves solely as VCC and is not monitored.
Does the adjustable input (V4IN) support monitoring of 2.5 V supplies?
Yes - V4IN accepts an external resistor divider to scale any input voltage down to the internal 0.62 V reference. To monitor 2.5 V, use R1 = 3.05 kΩ and R2 = 1.0 kΩ (per Equation 2 in datasheet), yielding ~0.62 V at V4IN when 2.5 V is applied to the divider top. Accuracy remains within ±1.5% of 0.62 V.
Is manual reset functionality supported without additional components?
Yes - the STM6710FWB6F supports manual reset via a push-button switch tied between any VxIN pin and GND. Depressing the button pulls the input below threshold, asserting RESET. The datasheet specifies a minimum 140 ms button hold time to guarantee reset pulse width, and no external debounce capacitor is required.
STM6710FWB6F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- 1.67V, 2.32V, 3.08V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
STM6710FWB6F FAQ
1.How can I place an order for STM6710FWB6F through Aetrix?
Please submit a Request for Quotation (RFQ) for STM6710FWB6F 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 STM6710FWB6F reliable?
The price and inventory of STM6710FWB6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM6710FWB6F is usually 5 days.
3.What payment methods are accepted for STM6710FWB6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM6710FWB6F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM6710FWB6F?
STM6710FWB6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM6710FWB6F 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 STM6710FWB6F?
For technical support, including STM6710FWB6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM6710FWB6F requirements.
6.How does Aetrix verify that STM6710FWB6F is sourced from the original manufacturer or authorized distributors?
All STM6710FWB6F 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 STM6710FWB6F meets industry standards.
7.What is the process for return or replacement of STM6710FWB6F?
All STM6710FWB6F units undergo pre-shipment inspection (PSI). If there is an issue with STM6710FWB6F, 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 STM6710FWB6F part is unused and in its original packaging.
Return procedure for STM6710FWB6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM6710FWB6F Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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APX803L20-29SA-7
Diodes Incorporated
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TPS3828-33DBVR
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V6340RSP3B+
EM Microelectronic
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EM6325CXSP5B-2.9+
EM Microelectronic
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MCP120T-300I/TT
Microchip Technology
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MCP130T-315I/TT
Microchip Technology
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MCP120T-475I/TT
Microchip Technology
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MCP111T-300E/TT
Microchip Technology
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MCP120T-315I/TT
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MCP809T-315I/TT
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