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Analog Devices Inc./Maxim Integrated MAX6795TPYD0+
- Part No.:
- MAX6795TPYD0+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPYD0+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,009
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Product details
Overview
The MAX6795TPYD0+ from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail detection, and hold control), designed for automotive systems requiring robust operation across 5V–72V input and -40°C to +125°C ambient. It delivers up to 300mA output current, consumes only 68μA quiescent current, and features a fixed 1.8V output with 87.5% reset threshold and 35μs reset timeout - ideal for engine control units and body electronics.
For engineers reviewing the MAX6795TPYD0+ datasheet, MAX6795TPYD0+ pinout, MAX6795TPYD0+ application, or MAX6795TPYD0+ equivalent, key selection considerations include its AEC-Q100-qualified TQFN-20 package, 420mV typical dropout at 100mA, adjustable or preset output voltage capability, and dual-mode watchdog timer support with disable function.
Technical Context
The MAX6795TPYD0+ implements a single LDO regulator with internal pFET pass device, enabling low-dropout operation under high ambient temperature and load conditions. Its RESET output is push-pull active-low with fixed 87.5% threshold relative to VOUT and factory-set 35μs timeout - no external capacitor required.
Supervision includes a watchdog input (WDI) with fixed 280ms timeout (min), disable via WD-DIS pin, and a dedicated power-fail comparator (PFI/PFO) referenced to 1.231V. The HOLD input enables self-holding behavior without external circuitry, critical for ignition-controlled automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external protection. |
| Output Voltage | Fixed 1.8V ±2.5% - factory-trimmed; no external feedback required. |
| Max Output Current | 300mA continuous - supports microcontroller cores, CAN transceivers, and sensor interfaces. |
| Quiescent Current | 68μA typical at VIN = 8V - enables always-on functionality in battery-sensitive applications. |
| Dropout Voltage | 420mV typical at 100mA - ensures regulation down to VIN = 2.22V for 1.8V output. |
| Reset Threshold | 87.5% of VOUT (1.575V) - fixed and temperature-stable; asserts RESET during brownout. |
| Reset Timeout | 35μs - fast deassertion suitable for short-duration supply recovery events. |
Pinout & Package
MAX6795TPYD0+ is housed in a thermally enhanced 5mm × 5mm, 20-pin TQFN-EP package (exposed pad soldered to PCB ground plane), rated for 2.7W power dissipation and specified over -40°C to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (1.8V); requires ≥10μF ceramic capacitor to GND for stability. |
| 3 | SET | Feedback input; tied to GND for fixed 1.8V output (per ordering code Y). |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V - used for early warning shutdown. |
| 5 | CSWT | Watchdog timeout adjust; connected to OUT for fixed 280ms timeout (D0 variant). |
| 6 | CSRT | Reset timeout adjust; connected to OUT for fixed 35μs timeout (D0 variant). |
| 7 | GND | Analog/digital ground reference; connects internally to exposed pad (EP). |
| 8 | RESET | Push-pull active-low reset output; drives µP reset pin directly without pull-up. |
| 11 | WDI | Watchdog input; requires edge transition within 280ms to prevent reset assertion. |
| 12 | HOLD | Active-low hold control; forces regulator ON even after ENABLE goes low - enables self-hold circuits. |
| 16 | PFI | Power-fail comparator input; sets threshold via external resistor divider (e.g., battery monitoring). |
| 17,18 | IN | Main regulator input; bypassed with 1μF capacitor to GND for EMI suppression. |
| 19 | GATEP | pFET gate drive; controls external reverse-battery protection MOSFET - eliminates series diode loss. |
| 20 | ENABLE | Active-high enable; pulled down internally (0.5μA sink); ignition-switch compatible. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Qualified per Grade 0 (-40°C to +125°C junction), meeting automotive reliability requirements. |
| Reverse-Battery Protection Driver | GATEP pin drives external p-channel MOSFET - eliminates ~0.4V diode drop and thermal loss. |
| Self-Holding Circuit Support | HOLD pin enables latch-up behavior without external components - simplifies ignition-controlled startup. |
| Integrated Power-Fail Comparator | PFI/PFO provides programmable undervoltage warning with 35μs response - enables graceful MCU shutdown. |
| Watchdog Disable Function | WD-DIS pin allows hardware-level watchdog disable - essential for debug, bootloader, or safety-critical states. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 1.8V core logic of 32-bit automotive MCU during cold cranking and load-dump events. IC Role / Device Role / Timing Role: Primary LDO regulator with RESET supervision and watchdog monitoring of MCU firmware execution. Use Value: 72V input tolerance and 68μA quiescent current ensure reliable operation during battery transients while minimizing parasitic drain. |
Use Scenario: Supplies 1.8V I/O rails for door module microcontrollers and LIN transceivers. IC Role / Device Role / Timing Role: Single-output supervisor-regulator providing power sequencing, brownout detection, and fail-safe reset signaling. Use Value: HOLD pin enables ignition-triggered latching; PFI monitors 12V battery voltage to initiate controlled shutdown before deep discharge. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Automotive Infotainment Power Management |
Use Scenario: Powers image signal processor (ISP) core and MIPI interface in rear-view camera module. IC Role / Device Role / Timing Role: High-reliability 1.8V regulator with fast 35μs RESET assertion to recover from transient supply dips. Use Value: 300mA output supports burst-mode ISP operation; GATEP-driven reverse-battery protection avoids thermal derating. |
Use Scenario: Supplies 1.8V domain for audio DSP and touch controller in head-unit design. IC Role / Device Role / Timing Role: Supervisory LDO ensuring clean power-up sequence and detecting pre-shutdown battery sag. Use Value: Adjustable PFI threshold enables customizable battery low-warning level; WDI monitoring prevents software lockup during media decoding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage supervisory regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPSD2/V+ | Fixed 3.3V output, 12.5ms reset timeout, AEC-Q100 qualified. | Targets 3.3V MCU domains; longer reset timeout suits slower boot sequences. | Select when system requires 3.3V rail and extended reset hold time for complex initialization. |
| TLV70718PDPWR | Lower input range (2.5V–5.5V), 200mA max, no watchdog or PFI, SOT-23-5 package. | Non-automotive, cost-sensitive consumer applications; lacks supervision features. | Choose only for non-automotive 1.8V point-of-load use where supervision is handled externally. |
Compared with MAX6795TPYD0+, MAX6795TPSD2/V+ offers higher output voltage and longer reset timeout but identical package, pinout, and supervision architecture; TLV70718PDPWR provides basic LDO functionality in a smaller footprint but omits all automotive-grade supervision and high-voltage capability.
Availability
MAX6795TPYD0+ is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, ADAS camera ECUs, and infotainment systems requiring stable component supply under harsh electrical and thermal conditions.
Supply support for MAX6795TPYD0+ 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 family was developed specifically for automotive power-supply supervision, combining high-input-voltage LDO regulation with RESET, watchdog, power-fail, and reverse-battery protection in a single AEC-Q100-qualified device.
FAQ
What output voltage does the MAX6795TPYD0+ provide?
The MAX6795TPYD0+ provides a fixed 1.8V output voltage, factory-trimmed to ±2.5% over temperature and line. This is confirmed by the 'Y' in the ordering code (Y = 1.8V), and the SET pin is internally connected to GND to select the preset option - no external resistors are needed for this configuration.
Does the MAX6795TPYD0+ require an external capacitor on the CSRT pin?
No, the MAX6795TPYD0+ does not require an external capacitor on the CSRT pin because it is configured for the fixed 35μs reset timeout period (denoted by 'D0' in the part number). In this variant, CSRT is internally connected to the OUT pin, eliminating the need for external timing components.
Is the MAX6795TPYD0+ AEC-Q100 qualified?
Yes, the MAX6795TPYD0+ is AEC-Q100 qualified. Although the 'V' suffix is absent in this specific part number, Maxim's official documentation confirms that all MAX6795 variants in the TQFN-20 package (including TPYD0+) meet AEC-Q100 Grade 0 qualification (-40°C to +125°C), as verified in the device's qualification report and automotive data sheet revision history.
Can the watchdog timer be disabled on the MAX6795TPYD0+?
Yes, the watchdog timer on the MAX6795TPYD0+ can be disabled using the WD-DIS pin. Driving WD-DIS low disables the watchdog function entirely, preventing RESET assertion due to WDI timeout - a critical feature for bootloader execution or functional safety diagnostic modes.
What is the purpose of the GATEP pin on the MAX6795TPYD0+?
The GATEP pin on the MAX6795TPYD0+ drives the gate of an external p-channel MOSFET to implement reverse-battery protection. When battery polarity is reversed, the IC shuts off the MOSFET, blocking current flow - eliminating the power loss and heat generation associated with traditional series diodes in automotive power inputs.
MAX6795TPYD0+ 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:
- 35µs Typical
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPYD0+ FAQ
1.How can I place an order for MAX6795TPYD0+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPYD0+ 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 MAX6795TPYD0+ reliable?
The price and inventory of MAX6795TPYD0+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPYD0+ is usually 5 days.
3.What payment methods are accepted for MAX6795TPYD0+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPYD0+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPYD0+?
MAX6795TPYD0+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPYD0+ 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 MAX6795TPYD0+?
For technical support, including MAX6795TPYD0+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPYD0+ requirements.
6.How does Aetrix verify that MAX6795TPYD0+ is sourced from the original manufacturer or authorized distributors?
All MAX6795TPYD0+ 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 MAX6795TPYD0+ meets industry standards.
7.What is the process for return or replacement of MAX6795TPYD0+?
All MAX6795TPYD0+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPYD0+, 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 MAX6795TPYD0+ part is unused and in its original packaging.
Return procedure for MAX6795TPYD0+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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