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Analog Devices Inc./Maxim Integrated MAX6362PUT29+T
- Part No.:
- MAX6362PUT29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6362PUT29+T.pdf
- Description:
- IC SUPERVISOR MPU LP SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
MAX6362PUT29+T from Maxim Integrated is a low-power microprocessor supervisory circuit with integrated watchdog timer, battery switchover, and 2.93V factory-preset reset threshold. It operates from +1.2V supply, delivers 150ms minimum reset timeout, and features active-low open-drain RESET output in SOT23-6 package. Used in portable/battery-powered equipment to ensure reliable µP reset during brownout and power failure.
For engineers reviewing the MAX6362PUT29+T datasheet, MAX6362PUT29+T pinout, MAX6362PUT29+T application, or MAX6362PUT29+T equivalent, key selection criteria include watchdog timeout period (1.6s), battery switchover hysteresis (40mV), VCC-to-OUT on-resistance (≤2.7Ω at 2.3V), guaranteed RESET/RESET validity down to 1.2V, and transient immunity against 100mV overdrive for ≤30µs.
Technical Context
The MAX6362PUT29+T implements a dedicated watchdog timer with 1.6s timeout (typical) that triggers reset pulses upon WDI inactivity; it clears on any rising/falling edge at WDI or during reset assertion. Its internal comparator monitors VCC against a precision 2.93V threshold (±1.5% over -40°C to +85°C), asserting reset when VCC falls below threshold and holding for ≥150ms after recovery.
Battery switchover logic activates when VCC drops below both the reset threshold and VBATT by ≥20mV, connecting BATT to OUT via an internal MOSFET with on-resistance as low as 2.38Ω (at VBATT = 2.25V, IOUT = 5mA); the BATT ON indicator is absent (MAX6363 function), and manual reset (MR) and adjustable RESET IN are disabled per device variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% - ensures reliable detection of 3.0V supply brownout with margin |
| Watchdog Timeout | 1.6s typical - provides sufficient time for µP firmware execution between WDI toggles |
| Reset Timeout Period | 150ms minimum - guarantees µP initialization completes before release from reset |
| Supply Voltage Range | +1.2V to +5.5V - supports operation directly from single-cell Li+ or 3.3V/5V rails |
| Supply Current (VCC) | 15µA max at VCC = 5.5V - enables multi-year battery life in backup mode |
| VCC-to-OUT On-Resistance | 2.7Ω max at VCC = 2.38V - limits voltage drop under 25mA SRAM load |
| Reset Propagation Delay | 280µs max at VCC falling 10V/ms - ensures fast response to rapid supply collapse |
Pinout & Package
Package: 6-pin SOT23 (U6-1, outline 21-0058), RoHS-compliant lead-free (+T suffix), -40°C to +85°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low open-drain reset output | Pulled low during reset assertion; requires external pull-up; drives µP /RESET input |
| 2: GND | Ground reference | Common return path for VCC, BATT, and output currents; must be low-impedance |
| 3: WDI | Watchdog timer input | Edge-sensitive input; reset triggered if no transition occurs within 1.6s; 100ns minimum pulse width |
| 4: VCC | Main supply input | Primary power source; reset asserted when VCC < 2.93V; powers internal circuitry and OUT |
| 5: OUT | Power output | Switches between VCC and BATT; sources up to 150mA; powers SRAM during brownout |
| 6: BATT | Backup battery input | Connected to OUT only when VCC < (VBATT − 20mV); draws <1µA standby current |
Key Features
| Feature | Design Value |
|---|---|
| Watchdog timer with 1.6s timeout | Enables firmware-level fault detection without external timing components |
| 2.93V precision reset threshold | Matches standard 3.0V supply rails with built-in hysteresis for noise immunity |
| Battery switchover with 40mV hysteresis | Prevents oscillation during slow VCC decay near VBATT; eliminates need for external comparators |
| 150ms minimum reset timeout | Guarantees µP power-up sequencing compliance across temperature and voltage corners |
| 1.2V minimum operating voltage | Supports direct connection to depleted Li+ cells or ultra-low-voltage systems |
Applications
| Portable Medical Devices | Industrial Data Loggers |
|---|---|
Use Scenario: Battery-powered glucose meters or ECG monitors requiring memory retention during main supply interruption. IC Role / Device Role / Timing Role: Supervisory circuit providing VCC brownout detection, automatic SRAM backup switchover, and watchdog-triggered reset on firmware hang. Use Value: Prevents data corruption during battery replacement or low-voltage conditions; extends usable battery life via 15µA quiescent current. | Use Scenario: Remote environmental sensors logging data to SRAM over weeks on primary battery, with coin-cell backup. IC Role / Device Role / Timing Role: Power supervisor ensuring clean µP reset on supply dip and seamless transition to backup power for SRAM retention. Use Value: Eliminates external diode-or circuitry; 40mV switchover hysteresis prevents chatter during gradual VCC decay. |
| POS Terminals | Smart Meters |
Use Scenario: Handheld point-of-sale terminals subject to sudden power loss during transaction processing. IC Role / Device Role / Timing Role: Watchdog-enforced firmware supervision and deterministic reset generation to prevent partial transaction commits. Use Value: 1.6s watchdog timeout aligns with typical transaction duration; 150ms reset hold ensures full µP initialization before resuming. | Use Scenario: Electricity meters with nonvolatile SRAM storing billing data, requiring tamper-proof power fail response. IC Role / Device Role / Timing Role: Dual-role supervisor: detects mains failure (VCC collapse) and asserts reset while switching SRAM to backup power. Use Value: 2.93V threshold precisely targets 3.0V rail monitoring; 1.2V operation allows function even with degraded backup cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6362HUT29+T | Same 2.93V threshold and watchdog, but push-pull RESET output instead of open-drain | Requires no external pull-up resistor; higher drive strength but less flexible bus interfacing | Select when driving a single µP /RESET with no shared bus |
| TPS3808G33DBVR | 3.3V reset threshold, 200ms reset timeout, no integrated watchdog or battery switchover | Designed for fixed 3.3V supply monitoring only; lacks backup power management | Select when only basic reset generation is needed and battery backup is handled externally |
Compared with MAX6362PUT29+T, the MAX6362HUT29+T offers stronger reset drive but sacrifices bus-sharing capability, while the TPS3808G33DBVR reduces cost and complexity where watchdog and battery switchover are unnecessary.
Availability
MAX6362PUT29+T is available at Aetrix Electronics and suitable for portable medical devices, industrial data loggers, POS terminals, smart meters, and battery-backed SRAM applications requiring stable component supply and long-term lifecycle support.
Supply support for MAX6362PUT29+T 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, automotive, and computing markets.
The MAX6361–MAX6364 product line delivers integrated power-supply monitoring, battery switchover, and watchdog functionality in ultra-small SOT23 packages for space-constrained, battery-powered µP systems.
FAQ
What is the watchdog timeout period for MAX6362PUT29+T?
The MAX6362PUT29+T features a watchdog timeout period of 1.6s (typical), with a guaranteed range of 1.00s to 2.25s over temperature. This timeout is measured from the last WDI edge; if no rising or falling transition occurs within this window, the device asserts a reset pulse for the full 150ms reset timeout period. The MAX6362PUT29+T watchdog clears automatically on any WDI edge or during reset assertion.
Does MAX6362PUT29+T support battery backup for SRAM?
Yes, MAX6362PUT29+T supports battery backup for SRAM via its dual-input power architecture. When VCC falls below both the 2.93V reset threshold and VBATT by at least 20mV, the internal MOSFET connects BATT to OUT, powering SRAM from the backup source. The MAX6362PUT29+T maintains <1µA battery standby current at VBATT = 2.8V and guarantees OUT operation down to 1.2V, enabling robust data retention during main supply failure.
What is the reset threshold voltage of MAX6362PUT29+T and how accurate is it?
The MAX6362PUT29+T has a factory-preset reset threshold voltage of 2.93V, with guaranteed accuracy of ±1.5% over the full -40°C to +85°C operating temperature range. This value is laser-trimmed during production and does not require external components. The MAX6362PUT29+T also provides 150ms minimum reset timeout after VCC rises above threshold, ensuring µP initialization completes before release.
Can MAX6362PUT29+T operate from a single-cell Li+ battery?
Yes, MAX6362PUT29+T operates from supply voltages as low as +1.2V, making it compatible with single-cell Li+ batteries across their full discharge range (4.2V down to ~2.5V). Its 2.93V reset threshold is optimized for 3.0V nominal rails, and its 15µA maximum supply current at 5.5V enables multi-year operation in battery-backup mode. The MAX6362PUT29+T remains fully functional even when VCC decays to 1.2V, guaranteeing reset integrity during deep brownout.
What package type and footprint does MAX6362PUT29+T use?
MAX6362PUT29+T uses a 6-pin SOT23 package (package code U6-1, outline 21-0058), with RoHS-compliant lead-free construction indicated by the "+T" suffix. The pinout is standardized across the MAX6361–MAX6364 family: Pin 1 = RESET, Pin 2 = GND, Pin 3 = WDI, Pin 4 = VCC, Pin 5 = OUT, Pin 6 = BATT. Land pattern number 90-0175 applies, and the device is rated for -40°C to +85°C operation.
MAX6362PUT29+T 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:
- Battery Backup Circuit
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6362PUT29+T FAQ
1.How can I place an order for MAX6362PUT29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6362PUT29+T 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 MAX6362PUT29+T reliable?
The price and inventory of MAX6362PUT29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6362PUT29+T is usually 5 days.
3.What payment methods are accepted for MAX6362PUT29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6362PUT29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6362PUT29+T?
MAX6362PUT29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6362PUT29+T 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 MAX6362PUT29+T?
For technical support, including MAX6362PUT29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6362PUT29+T requirements.
6.How does Aetrix verify that MAX6362PUT29+T is sourced from the original manufacturer or authorized distributors?
All MAX6362PUT29+T 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 MAX6362PUT29+T meets industry standards.
7.What is the process for return or replacement of MAX6362PUT29+T?
All MAX6362PUT29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6362PUT29+T, 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 MAX6362PUT29+T part is unused and in its original packaging.
Return procedure for MAX6362PUT29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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