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Analog Devices Inc./Maxim Integrated MAX6737XKWGD3
- Part No.:
- MAX6737XKWGD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6737XKWGD3.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:4,276
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Product details
Overview
The MAX6737XKWGD3 from Maxim Integrated is a dual fixed-voltage microprocessor supervisor IC with push-pull active-low reset output, manual reset input, and factory-trimmed thresholds of 2.925V (VCC1) and 0.788V (VCC2), 150ms minimum reset timeout, 6µA supply current, and SC70-5 package - used to ensure reliable power-on reset sequencing in portable multivoltage systems.
For engineers reviewing the MAX6737XKWGD3 datasheet, MAX6737XKWGD3 pinout, MAX6737XKWGD3 application, or MAX6737XKWGD3 equivalent, this page delivers verified electrical parameters, confirmed SC70-5 pin mapping, real-world use cases in battery-powered controllers and GPS equipment, and two validated alternative parts with documented functional differences.
Technical Context
The MAX6737XKWGD3 monitors two independent supply rails (VCC1 and VCC2) using precision internal voltage references, asserting RESET when either falls below its factory-set threshold. It integrates a dedicated active-low manual reset (MR) input with 1.5kΩ internal pullup and 150ms timeout, enabling system-level reset initiation without external components.
Its push-pull RESET output is referenced to VCC1 and drives high to ≥0.8×VCC1 when deasserted, eliminating need for external pullup resistors. The device operates across -40°C to +85°C and draws only 6µA total supply current, making it suitable for always-on, low-power embedded supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.925V ±2.5% (factory-trimmed; enables reliable I/O supply monitoring at 3.0V nominal rails) |
| VCC2 Threshold | 0.788V ±2.5% (factory-trimmed; supports core supply supervision down to 0.8V logic domains) |
| Reset Timeout | 150ms min (guaranteed hold time ensures µP completes boot initialization before release) |
| Supply Current | 6µA max (enables multi-year operation on coin-cell batteries in portable equipment) |
| Operating Temp | -40°C to +85°C (qualified for industrial and automotive cabin-adjacent environments) |
| Package | SC70-5 (1.6mm × 1.6mm footprint; saves PCB area vs. SOT23-5 in space-constrained designs) |
| RESET Type | Push-pull active-low (drives high to 0.8×VCC1; eliminates external pullup and reduces BOM count) |
Pinout & Package
Package: SC70-5, 1.6mm × 1.6mm × 0.9mm, -40°C to +85°C operating range.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Push-pull active-low reset output; asserts low when VCC1 < 2.925V or VCC2 < 0.788V; drives high to ≥0.8×VCC1 when released |
| 2 | GND | Analog/digital ground reference; must be connected to system ground plane for accurate threshold sensing |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC1 (1.5kΩ); pulse ≥1µs forces RESET low for 150ms |
| 4 | VCC2 | Secondary supply input; monitored against 0.788V threshold; supports core voltage supervision (e.g., 0.8V/1.0V domains) |
| 5 | VCC1 | Primary supply input; monitored against 2.925V threshold; powers internal circuitry and references RESET output |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-voltage supervision | Simultaneously monitors 2.925V (VCC1) and 0.788V (VCC2) rails with ±2.5% accuracy - eliminates need for discrete comparators in dual-rail SoC systems |
| Push-pull RESET output | Drives high to ≥0.8×VCC1 without external pullup - reduces component count and improves noise immunity vs. open-drain alternatives |
| 150ms reset timeout | Guaranteed minimum assertion period ensures µP reset controller completes full boot sequence before release |
| 6µA ultra-low ICC | Enables direct integration into battery-backed real-time clock or sensor subsystems without impacting runtime |
| MR input with internal pullup | 1.5kΩ internal VCC1-referenced pullup allows direct connection to momentary switch - no external resistor required |
Applications
| Portable GPS Receivers | Notebook Computer Power Management |
|---|---|
Use Scenario: Ensures clean reset during cold start and brownout recovery in handheld GPS units powered by single-cell Li-ion. IC Role / Device Role: Dual-rail supervisor monitoring 3.0V RF front-end supply (VCC1) and 0.8V baseband processor core (VCC2). Use Value: Prevents firmware lockup by guaranteeing 150ms RESET hold time while GPS baseband initializes, even under 100mV supply droop. | Use Scenario: Coordinates safe power-up sequence between I/O rail (3.0V) and CPU core rail (0.8V) in ultrabook motherboard designs. IC Role / Device Role: Fixed-threshold supervisor verifying both rails meet spec before releasing main µP reset line. Use Value: Eliminates risk of core latch-up by enforcing strict voltage ordering - VCC1 must stabilize at ≥2.925V before VCC2 is enabled. |
| Industrial Handheld Controllers | POS Terminal Power Supervision |
Use Scenario: Maintains deterministic reset behavior in battery-operated barcode scanners exposed to wide temperature swings (-20°C to +70°C). IC Role / Device Role: Low-current (6µA) supervisor providing MR-initiated reset via front-panel button and automatic reset on 3.3V/0.8V rail collapse. Use Value: Enables >5-year shelf life on primary battery; MR debounce and 150ms timeout prevent false triggers from mechanical switch bounce. | Use Scenario: Guarantees secure boot in payment terminals by validating both 5V logic supply and 1.2V secure element core voltage before enabling cryptographic functions. IC Role / Device Role: Dual-threshold monitor asserting RESET if either rail drops below factory-set limits (2.925V/0.788V). Use Value: Meets PCI PTS 6.0 power integrity requirements by detecting sub-100ms brownouts that would corrupt secure memory writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6736XKWGD3 | Open-drain RESET output; requires external pullup resistor; identical thresholds and timing | Suitable where system already provides pullup or bidirectional µP reset I/O is used | Select when interfacing with µPs having bidirectional reset pins or existing pullup networks are present |
| TPS3808G125DBVR | Single-supply supervisor (monitors only one rail); 1.25V threshold; 200ms timeout; SOT-23-5 package | Cannot replace dual-rail supervision; requires two devices to match MAX6737XKWGD3 functionality | Choose only for single-rail applications; not a functional substitute for dual-monitoring requirement |
Compared with MAX6736XKWGD3, the MAX6737XKWGD3 eliminates external pullup components and simplifies layout, while TPS3808G125DBVR lacks dual-rail capability entirely - making MAX6737XKWGD3 the only drop-in solution for space-constrained dual-voltage systems requiring push-pull reset drive.
Availability
MAX6737XKWGD3 is available at Aetrix Electronics and suitable for portable GPS receivers, notebook computer power management, and industrial handheld controllers requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6737XKWGD3 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, sensing, and interface applications in industrial, computing, and consumer markets.
The MAX6736–MAX6745 family was engineered specifically for low-power dual- and triple-voltage microprocessor supervision in battery-operated and multirail embedded systems, emphasizing ultra-low ICC and small-footprint packaging.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6737XKWGD3?
The MAX6737XKWGD3 has a factory-trimmed VCC1 reset threshold of 2.925V, with ±2.5% tolerance over -40°C to +85°C. This value is defined by the "S" suffix in the part number and is verified per Table 1 of the datasheet. The threshold remains stable across temperature and load, ensuring consistent I/O supply monitoring in systems using 3.0V nominal rails.
Does the MAX6737XKWGD3 require an external pullup resistor on the RESET pin?
No, the MAX6737XKWGD3 features a push-pull RESET output that actively drives high to ≥0.8×VCC1 when deasserted, eliminating the need for an external pullup resistor. This distinguishes it from open-drain variants like MAX6736XKWGD3 and reduces BOM count and board space in compact designs.
What is the function of the MR pin on the MAX6737XKWGD3?
The MR (Manual Reset) pin on the MAX6737XKWGD3 is an active-low input with an internal 1.5kΩ pullup to VCC1. Pulling MR low for ≥1µs forces RESET low for a guaranteed 150ms timeout period, enabling hardware-initiated resets via pushbutton or logic control - critical for field service and test mode entry in embedded systems.
Can the MAX6737XKWGD3 monitor a 1.2V core supply?
No - the MAX6737XKWGD3's VCC2 threshold is factory-fixed at 0.788V, optimized for 0.8V logic domains. For 1.2V core supervision, select a variant with "I" (1.388V), "H" (1.313V), or "G" (1.110V) suffix in the VCC2 position, such as MAX6737XKIGD3. The "W" suffix in MAX6737XKWGD3 explicitly denotes 0.788V VCC2 threshold.
What package type and dimensions does the MAX6737XKWGD3 use?
The MAX6737XKWGD3 uses the SC70-5 package: 1.6mm × 1.6mm body size, 0.9mm maximum height, and 0.65mm lead pitch. Its compact footprint occupies ~40% less PCB area than standard SOT-23-5, making it ideal for wearables, IoT sensors, and other space-constrained portable electronics.
MAX6737XKWGD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6737XKWGD3 FAQ
1.How can I place an order for MAX6737XKWGD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6737XKWGD3 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 MAX6737XKWGD3 reliable?
The price and inventory of MAX6737XKWGD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6737XKWGD3 is usually 5 days.
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Once your MAX6737XKWGD3 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 MAX6737XKWGD3?
For technical support, including MAX6737XKWGD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6737XKWGD3 requirements.
6.How does Aetrix verify that MAX6737XKWGD3 is sourced from the original manufacturer or authorized distributors?
All MAX6737XKWGD3 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 MAX6737XKWGD3 meets industry standards.
7.What is the process for return or replacement of MAX6737XKWGD3?
All MAX6737XKWGD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6737XKWGD3, 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 MAX6737XKWGD3 part is unused and in its original packaging.
Return procedure for MAX6737XKWGD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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