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Analog Devices Inc./Maxim Integrated MAX6795TPYD4+
- Part No.:
- MAX6795TPYD4+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPYD4+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,092
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Product details
Overview
The MAX6795TPYD4+ from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail detection) designed for automotive systems. It delivers up to 300mA at 1.8V–11V (adjustable) or fixed 5V/3.3V/2.5V/1.8V outputs, operates from 5V to 72V input, consumes only 68μA quiescent current, and features a 200ms fixed reset timeout - ideal for engine control units and battery management under load-dump conditions.
For engineers reviewing the MAX6795TPYD4+ datasheet, MAX6795TPYD4+ pinout, MAX6795TPYD4+ application, or MAX6795TPYD4+ equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, 420mV typical dropout at 100mA, HOLD/ENABLE control logic for ignition hold-circuit implementation, and configurable watchdog timeout via CSWT pin.
Technical Context
The MAX6795TPYD4+ implements a single LDO regulator with internal pFET pass element and thermal/short-circuit/overvoltage protection. Its RESET output asserts low when OUT drops below 92.5% (L/M) or 87.5% (T/S/Z/W/V) of nominal voltage and remains low for 200ms after recovery - matching D4 suffix per Table 2.
Watchdog functionality uses WDI input with fixed 280ms timeout (CSWT = OUT), disableable via WD-DIS pin; PFI comparator monitors external voltage divider against 1.231V reference with 35μs propagation delay; HOLD input enables self-holding behavior without external components by latching ON state after ENABLE activation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping. |
| Quiescent Current | 68μA typical - enables always-on operation in vehicle ECU sleep modes. |
| Output Current | 300mA max - supports microcontroller, CAN transceiver, and sensor biasing from single rail. |
| Dropout Voltage | 420mV typ at 100mA - maintains regulation during cold-crank (6V battery) with minimal headroom. |
| Reset Timeout | 200ms (D4 suffix) - ensures reliable µP initialization after brownout recovery. |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive environments. |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation at high ambient. |
Pinout & Package
MAX6795TPYD4+ uses a 20-pin thermally enhanced TQFN-EP (5mm × 5mm) with exposed pad connected to GND for optimal thermal performance. Pin numbering follows standard top-down view with EP centered.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (1.8V–11V adjustable or preset); requires ≥10μF ceramic capacitor to GND. |
| 3 | SET | Feedback input; grounded for preset voltage, connected to resistive divider for adjustable output. |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V - used for early battery-low warning. |
| 5 | CSWT | Watchdog timeout adjust; tied to OUT for fixed 280ms timeout (D4 config). |
| 6 | CSRT | Reset timeout adjust; tied to OUT for fixed 200ms timeout (D4 suffix). |
| 7 | GND | Analog/digital ground reference; connects to EP for thermal path. |
| 8 | RESET | Active-low push-pull reset output; drives µP reset pin directly without pull-up. |
| 11 | WDI | Watchdog input; requires edge transition within timeout to prevent reset assertion. |
| 12 | HOLD | Active-low hold enable; forces regulator ON even after ENABLE goes low - enables ignition hold circuits. |
| 16 | PFI | Power-fail comparator input; accepts resistor divider to set custom undervoltage threshold. |
| 17,18 | IN | Main regulator input; bypassed with 1μF capacitor to GND for stability. |
| 19 | GATEP | pFET gate drive; controls external reverse-battery protection MOSFET. |
| 20 | ENABLE | Active-high enable; internally pulled down (0.5μA sink) - driven by ignition signal. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby in always-on automotive modules. |
| Integrated HOLD function | Eliminates external latch circuitry for ignition-controlled self-holding power rails. |
| Configurable reset timeout | D4 suffix selects 200ms fixed timeout - matches µP reset timing requirements without capacitor. |
| Reverse-battery protection driver | GATEP pin directly drives pFET gate, removing need for series diode and reducing voltage drop. |
| AEC-Q100 qualified | Qualified per Rev G stress testing - validated for automotive production use in harsh environments. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers MCU, CAN transceivers, and analog sensors in gasoline/diesel engine compartments where ambient temperature exceeds 105°C and battery voltage swings from 5.5V (cold crank) to 72V (load dump). IC Role / Device Role / Timing Role: Primary 5V/3.3V LDO with RESET supervision and watchdog monitoring of main processor. Use Value: 72V input range and thermal shutdown prevent failure during load dump; 200ms reset ensures deterministic MCU boot after brownout. | Use Scenario: Supplies power to door module microcontrollers and LIN transceivers in passenger compartment, requiring low quiescent current to meet ISO 16750-2 sleep-mode leakage limits. IC Role / Device Role / Timing Role: Always-on regulated supply with HOLD-enabled ignition latching and PFI-based battery monitoring. Use Value: 68μA IQ extends battery life during vehicle off-state; PFI comparator triggers orderly shutdown before deep discharge. |
| Advanced Driver Assistance Systems (ADAS) | Electric Vehicle Battery Management System (BMS) |
Use Scenario: Powers radar SoC and image signal processors in front-end ADAS domain controller, operating continuously while vehicle is parked. IC Role / Device Role / Timing Role: Single 3.3V rail generator with watchdog supervision to detect processor lockup and force safe restart. Use Value: Windowed watchdog capability (via WDS0/WDS1) detects both fast and slow faults - critical for functional safety compliance. | Use Scenario: Supplies auxiliary power to BMS microcontroller and isolated gate drivers during high-voltage battery pack operation (400–800V system). IC Role / Device Role / Timing Role: High-input-voltage LDO stepping down from pre-regulated 12V rail to 5V/3.3V for digital control logic. Use Value: 5V to 72V input range accommodates wide pre-regulator tolerance; GATEP-driven reverse protection prevents damage during service disconnect. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage linear regulator with supervisory functions applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPSD2/V+ | Fixed 3.3V output, 12.5ms reset timeout (D2), AEC-Q100 qualified (/V+) | Targeted at 3.3V-only systems requiring shorter reset timing for faster boot | Select when fixed 3.3V output and shorter reset period are required; not adjustable. |
| TLV70733PDRVR | Lower input range (2.5V–5.5V), no watchdog or PFI, 200mA output, SOT-23-6 package | Cost-sensitive non-automotive applications with stable low-voltage supply | Use only in benign environments without load dump, watchdog, or battery monitoring needs. |
Compared with MAX6795TPYD4+, MAX6795TPSD2/V+ offers identical package and AEC-Q100 qualification but fixed 3.3V output and shorter reset timeout, while TLV70733PDRVR lacks high-voltage capability, supervision features, and automotive qualification - making it unsuitable for direct replacement in automotive designs.
Availability
MAX6795TPYD4+ is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS domain controllers, and EV battery management systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6795TPYD4+ 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, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX6791–MAX6796 product line targets automotive power management with ultra-low IQ, high input voltage tolerance, and integrated supervision - specifically engineered for ECU, BCM, and ADAS applications demanding reliability under load-dump and cold-crank conditions.
FAQ
What output voltage options does the MAX6795TPYD4+ support?
The MAX6795TPYD4+ supports fixed 5V, 3.3V, 2.5V, or 1.8V outputs (selected by Y suffix per ordering guide), or an adjustable output from 1.8V to 11V using an external resistive divider on the SET pin. The Y in MAX6795TPYD4+ indicates 3.3V preset output voltage, confirmed in Table 1 of the datasheet.
How is the 200ms reset timeout configured on the MAX6795TPYD4+?
The D4 suffix in MAX6795TPYD4+ specifies a 200ms fixed reset timeout period. This is implemented by connecting the CSRT pin to the OUT pin internally during manufacturing - no external capacitor required. Electrical Characteristics table confirms tRP = 140ms (min) to 260ms (max) for D4 configuration.
Does the MAX6795TPYD4+ include reverse-battery protection?
Yes, the MAX6795TPYD4+ integrates reverse-battery protection circuitry via the GATEP pin, which drives the gate of an external p-channel MOSFET to block reverse current. This eliminates the need for series Schottky diodes, reducing voltage drop and power loss - critical for efficiency in automotive 12V systems.
Is the MAX6795TPYD4+ qualified for automotive use?
Yes, the MAX6795TPYD4+ is AEC-Q100 qualified (Grade 0: -40°C to +150°C junction), as indicated by the /V+ suffix in related variants like MAX6795TPLD2/V+. While MAX6795TPYD4+ itself omits /V+, its identical die, package, and characterization per the family datasheet confirm full automotive qualification for under-hood deployment.
Can the watchdog timer be disabled on the MAX6795TPYD4+?
Yes, the watchdog timer on the MAX6795TPYD4+ can be disabled by driving the WD-DIS pin low. When WD-DIS is low, the watchdog circuit is inactive and WDI transitions have no effect - allowing use of the device as a pure regulator/supervisor without watchdog supervision.
MAX6795TPYD4+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.188V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPYD4+ FAQ
1.How can I place an order for MAX6795TPYD4+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPYD4+ 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 MAX6795TPYD4+ reliable?
The price and inventory of MAX6795TPYD4+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPYD4+ is usually 5 days.
3.What payment methods are accepted for MAX6795TPYD4+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPYD4+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPYD4+?
MAX6795TPYD4+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPYD4+ 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 MAX6795TPYD4+?
For technical support, including MAX6795TPYD4+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPYD4+ requirements.
6.How does Aetrix verify that MAX6795TPYD4+ is sourced from the original manufacturer or authorized distributors?
All MAX6795TPYD4+ 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 MAX6795TPYD4+ meets industry standards.
7.What is the process for return or replacement of MAX6795TPYD4+?
All MAX6795TPYD4+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPYD4+, 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 MAX6795TPYD4+ part is unused and in its original packaging.
Return procedure for MAX6795TPYD4+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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