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Analog Devices Inc./Maxim Integrated MAX6763UT
- Part No.:
- MAX6763UT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6763UT.pdf
- Description:
- IC SUPERVISOR SGL VOLT WINDOW
- Quantity:
- Payment:
- Shipping:
Inventory:1,526
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Product details
Overview
MAX6763UT from Maxim Integrated is a low-power, single-voltage window detector IC that monitors system supply voltage for undervoltage and overvoltage conditions using externally adjustable thresholds. It features independent push-pull UV and OV outputs, 10µA typical supply current, ±5%/±10%/±15% selectable window hysteresis, and operates from VCC = 1.4V to 6.0V across –40°C to +125°C. It is used in DC-DC converter supervision and microprocessor power sequencing.
For engineers reviewing the MAX6763UT datasheet, MAX6763UT pinout, MAX6763UT application, or MAX6763UT equivalent, key selection considerations include its externally programmable 0.5V reference-based UVIN/OVIN inputs, 20µs propagation delay, open-drain-compatible OV output (push-pull), manual reset support, and SOT23-6 packaging for space-constrained embedded power monitoring.
Technical Context
The MAX6763UT implements a dual-input window detection architecture where UVIN and OVIN each compare against an internal 0.5V threshold with 0.7% hysteresis. Its UV and OV outputs are independent, push-pull, and respond within 20µs to input transitions - no timeout delay is applied to either output. The device draws only 10µA at 3.6V and maintains valid logic states down to VCC = 1.0V.
Unlike factory-trimmed variants (e.g., MAX6754–MAX6762), the MAX6763UT relies entirely on external resistor dividers to set upper and lower trip points via UVIN and OVIN pins. Its SET pin is not used; instead, threshold programming is achieved by scaling the monitored voltage to match the fixed 0.5V internal comparator reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VCC = 1.4V to 6.0V; powers device and enables operation down to 1.0V with asserted outputs |
| Supply Current | 10µA typ at 3.6V; enables ultra-low-power battery-backed or always-on monitoring |
| UV/OV Input Threshold | Fixed 0.485V–0.515V internal reference; sets precise trip point for external resistor-divider networks |
| Propagation Delay | 20µs max from UVIN/OVIN transition to UV/OV assertion; supports fast fault response |
| Output Type | Independent push-pull UV and OV outputs; eliminates need for external pull-ups in most MCU interface scenarios |
| Operating Temperature | –40°C to +125°C; qualified for automotive under-hood and industrial power module environments |
| Input Bias Current | ±20nA on UVIN/OVIN; minimizes divider network error and enables high-impedance sensing |
Pinout & Package
MAX6763UT is housed in a 6-pin SOT23-6 package with exposed pad (EP) internally connected to GND. Pin 1 is VCC, Pin 2 is GND, Pin 3 is UVIN, Pin 4 is UV, Pin 5 is OVIN, and Pin 6 is OV. The EP must be soldered to PCB ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power supply input | Device power rail; not monitored - unlike MAX6754–MAX6762 family members |
| 2 - GND | Ground reference | Primary return path for all internal circuitry and output drivers |
| 3 - UVIN | Undervoltage input | Compares against 0.5V internal reference; low when voltage < 0.5V |
| 4 - UV | Undervoltage output | Active-low push-pull output; asserts immediately on UVIN < 0.5V, no timeout |
| 5 - OVIN | Overvoltage input | Compares against same 0.5V reference; low when voltage > 0.5V |
| 6 - OV | Overvoltage output | Active-low push-pull output; asserts immediately on OVIN > 0.5V, no timeout |
Key Features
| Feature | Design Value |
|---|---|
| Externally adjustable window thresholds | Enables precise UV/OV trip points down to 0.5V using resistor dividers - no factory trimming required |
| Independent UV and OV outputs | Allows separate system responses to brownout vs. overvoltage events without software arbitration |
| 20µs propagation delay | Supports real-time protection of sensitive loads like FPGAs and DSPs during transient excursions |
| 10µA supply current | Reduces standby power in always-on systems such as smart meters and remote sensors |
| –40°C to +125°C operation | Validates reliability in automotive engine control units and industrial motor drives |
Applications
| DC-DC Converter Supervision | Microprocessor Power Sequencing |
|---|---|
Use Scenario: Monitoring output rails of isolated DC-DC converters in telecom power supplies to prevent downstream damage from overvoltage faults. IC Role / Device Role / Timing Role: Window detector providing immediate, latch-free UV/OV assertion to trigger shutdown circuitry or flag fault registers. Use Value: 20µs response time ensures protection before MOSFET avalanche or capacitor over-stress occurs. | Use Scenario: Coordinating power-up sequence of multi-rail processors (core, I/O, PLL) in servers and networking equipment. IC Role / Device Role / Timing Role: Independent UV and OV outputs feed separate enable lines to LDOs or PMICs, enforcing strict voltage window compliance before release. Use Value: Eliminates need for microcontroller polling or complex timing firmware - hardware-enforced sequencing. |
| Automotive Body Control Module | Industrial Data Acquisition System |
Use Scenario: Supervising 12V battery-derived rails in BCMs where load-dump transients and cold-crank undervoltage are common. IC Role / Device Role / Timing Role: Detecting both overvoltage (>16V) and undervoltage (<9V) on switched 12V domains using scaled resistor inputs. Use Value: ±20nA UVIN/OVIN bias current ensures stable threshold setting despite high-value dividers needed for 12V range. | Use Scenario: Ensuring clean power to precision ADCs and analog front-ends in portable test equipment operating from Li-ion batteries. IC Role / Device Role / Timing Role: Monitoring regulated 3.3V and 1.8V rails for sub-100mV excursions that degrade ENOB or cause digital lockup. Use Value: 0.7% internal hysteresis prevents chatter during slow voltage ramps near trip points. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6764UT-T | Same pinout and function, but OV output is open-drain instead of push-pull | Requires external pull-up for active-high logic; better suited for wired-OR fault bus architectures | Select MAX6764UT-T when interfacing to shared interrupt lines or level-translating I/O |
| TLV809EADBZR | Single-channel (UV-only), fixed 3.08V threshold, 1.6µA quiescent current, SOT23-3 | Lacks overvoltage detection and independent outputs; suitable only for basic brownout protection | Choose TLV809EADBZR only when cost and footprint are critical and OV monitoring is unnecessary |
Compared with MAX6764UT-T and TLV809EADBZR, the MAX6763UT provides unique value through its dual independent push-pull outputs and full external adjustability - enabling flexible, low-latency, and self-contained window supervision without external components or firmware overhead.
Availability
MAX6763UT is available at Aetrix Electronics and suitable for DC-DC converter supervision, microprocessor power sequencing, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6763UT 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power management, sensing, and interface applications.
The MAX6754–MAX6764 family was engineered specifically for robust, low-power voltage supervision in harsh environments - emphasizing accuracy, speed, and configurability over fixed-threshold alternatives.
FAQ
What is the function of the UVIN and OVIN pins on the MAX6763UT?
The UVIN and OVIN pins on the MAX6763UT serve as dedicated analog inputs referenced to an internal 0.5V comparator threshold. UVIN asserts the UV output when its voltage falls below 0.5V; OVIN asserts the OV output when its voltage rises above 0.5V. Both inputs draw only ±20nA, enabling high-impedance resistor-divider networks to scale any monitored supply (e.g., 12V, 5V, 3.3V) down to the 0.5V reference - making the MAX6763UT fully externally adjustable. This behavior is confirmed in the Electrical Characteristics table and Functional Diagram 4 of the MAX6763UT datasheet.
Does the MAX6763UT have a manual reset (MR) input?
No, the MAX6763UT does not include a manual reset (MR) input. Unlike MAX6754–MAX6762 variants, the MAX6763UT pinout omits MR - as confirmed in the Pin Description table (page 9) and Selector Guide (page 14) of the datasheet. Its functional diagram shows no MR connection, and the device relies solely on automatic UV/OV detection via UVIN and OVIN. If manual reset capability is required, consider MAX6757UT or MAX6760TA variants instead.
What is the maximum supply voltage the MAX6763UT can tolerate on VCC?
The MAX6763UT has an absolute maximum VCC rating of +6.5V, but its specified operating range is 1.4V to 6.0V. Operation above 6.0V is outside guaranteed specifications and may compromise accuracy or reliability. The datasheet explicitly states "VCC = 1.4V to 6.0V" in the Electrical Characteristics table (page 2), and notes that outputs remain valid down to VCC = 1.0V - however, functional operation below 1.4V is not characterized. Always maintain VCC within 1.4V–6.0V for full specification compliance.
Can the MAX6763UT monitor two different supply voltages simultaneously?
No, the MAX6763UT is a single-voltage window detector and cannot monitor two independent supplies. It accepts one monitored voltage via UVIN/OVIN (scaled to 0.5V), producing separate UV and OV outputs for that same rail. Dual-supply monitoring is exclusive to MAX6760/MAX6761/MAX6762 devices, which feature dedicated VCC and VCC2 inputs and corresponding dual-window comparators. The MAX6763UT datasheet confirms this in the Detailed Description section (page 12): "The MAX6763/MAX6764 are single adjustable window detectors with separate under/overvoltage outputs."
What package type and RoHS status does the MAX6763UT use?
The MAX6763UT is supplied in a 6-pin SOT23-6 package with exposed pad (EP), and is available in lead-free form. Per the Ordering Information (page 15), the standard suffix "-T" denotes lead-free packaging; replacing "-T" with "+T" is optional but redundant since "-T" already indicates RoHS-compliant construction. The EP is internally connected to GND and must be soldered to a PCB ground plane for thermal performance and EMI reduction - as specified in the Pin Description (page 9) and Absolute Maximum Ratings (page 2).
MAX6763UT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6763UT FAQ
1.How can I place an order for MAX6763UT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6763UT 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 MAX6763UT reliable?
The price and inventory of MAX6763UT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6763UT is usually 5 days.
3.What payment methods are accepted for MAX6763UT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6763UT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6763UT?
MAX6763UT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6763UT 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 MAX6763UT?
For technical support, including MAX6763UT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6763UT requirements.
6.How does Aetrix verify that MAX6763UT is sourced from the original manufacturer or authorized distributors?
All MAX6763UT 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 MAX6763UT meets industry standards.
7.What is the process for return or replacement of MAX6763UT?
All MAX6763UT units undergo pre-shipment inspection (PSI). If there is an issue with MAX6763UT, 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 MAX6763UT part is unused and in its original packaging.
Return procedure for MAX6763UT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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