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Analog Devices Inc./Maxim Integrated MAX6795TPYD3+T
- Part No.:
- MAX6795TPYD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPYD3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,569
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Product details
Overview
The MAX6795TPYD3+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. It delivers up to 300mA output current, operates from 5V to 72V input, consumes only 68μA quiescent current, and features a 50ms fixed reset timeout - ideal for engine control units (ECUs) requiring robust brownout protection under load-dump conditions.
For engineers reviewing the MAX6795TPYD3+T datasheet, MAX6795TPYD3+T pinout, MAX6795TPYD3+T application, or MAX6795TPYD3+T equivalent, key selection criteria include its AEC-Q100-qualified 5mm × 5mm TQFN package, adjustable or preset 1.8V–11V output, watchdog disable capability, and HOLD-enabled self-holding circuit implementation without external components.
Technical Context
The MAX6795TPYD3+T implements a single LDO regulator with internal pFET pass element, supporting dropout as low as 84mV at 20mA (typ). Its supervisory block integrates a fixed-threshold RESET output (92.5% of VOUT), capacitor-adjustable or factory-set reset timeout (D3 = 50ms), and a 280ms min watchdog timeout with WD-DIS pin disable control.
It includes dual-mode enable logic: ENABLE asserts regulation, while HOLD sustains output even after ENABLE is deasserted - enabling ignition-key-triggered latching behavior. The device also integrates reverse-battery protection via GATEP-driven pFET, PFI/PFO power-fail monitoring with 1.231V reference, and thermal/short-circuit/output overvoltage protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without shutdown |
| Quiescent Current | 68μA - enables always-on ECU subsystems with ultra-low standby power |
| Output Current | 300mA - sufficient to power microcontrollers, CAN transceivers, and sensors in Tier-1 modules |
| Dropout Voltage | 84mV (typ) at 20mA - maintains regulation during cold-crank battery dips down to ~6V |
| Reset Timeout | 50ms (D3 option) - ensures reliable µP initialization after power 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
MAX6795TPYD3+T uses a 20-pin thermally enhanced TQFN-EP (5mm × 5mm) with exposed pad (EP) connected internally to GND. The package supports continuous operation at high ambient temperatures and high load currents due to low thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (preset or adjustable 1.8V–11V); requires ≥10μF ceramic bypass 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 falls below 1.231V threshold |
| 5 | CSWT | Watchdog timeout adjust - tied to OUT for fixed 280ms timeout; capacitor to GND for adjustment |
| 6 | CSRT | Reset timeout adjust - tied to OUT for fixed 50ms (D3); capacitor to GND for user-defined delay |
| 7 | GND | Analog/digital ground reference and thermal path via EP |
| 8 | RESET | Active-low reset output - push-pull or open-drain; asserts during VOUT undervoltage or WDI fault |
| 11 | WDI | Watchdog input - rising/falling edge must occur within tWD to prevent RESET assertion |
| 12 | HOLD | Active-low hold input - forces regulator ON even after ENABLE goes low; enables self-hold circuits |
| 16 | PFI | Power-fail comparator input - used with external resistor divider to set custom brownout threshold |
| 17,18 | IN | Main regulator input - bypassed with 1μF capacitor to GND; accepts 5V–72V |
| 19 | GATEP | pFET gate drive - controls external p-channel MOSFET for reverse-battery protection |
| 20 | ENABLE | Active-high enable - internally pulled down; drives high to activate regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery life in always-on automotive modules |
| Integrated HOLD function | Eliminates need for external latch circuitry in ignition-controlled power sequencing |
| Reverse-battery protection driver | GATEP output directly drives pFET - removes series diode loss and heat |
| Adjustable or preset output | Supports 1.8V/2.5V/3.3V/5V presets or 1.8V–11V via SET resistor network |
| Watchdog disable pin (WD-DIS) | Hardware-level disable allows safe firmware development without spurious resets |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance System (ADAS) Camera Module |
|---|---|
Use Scenario: Powers MCU, CAN interface, and analog sensors in gasoline/diesel engine management systems exposed to load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: Primary 5V/3.3V supply with reset supervision and watchdog monitoring for safety-critical firmware execution. Use Value: 72V input tolerance and 68μA IQ ensure uninterrupted operation during 12V battery transients; HOLD enables ignition-triggered latching without external components. | Use Scenario: Supplies image signal processor (ISP) and serializer in rear-view or surround-view camera modules mounted near vehicle exterior. IC Role / Device Role / Timing Role: Single-point regulated power source with brownout detection and programmable reset timing for fail-safe boot sequence. Use Value: -40°C to +125°C rating and AEC-Q100 qualification guarantee reliability in high-temperature chassis locations; PFI/PFO enables early warning of battery sag before system shutdown. |
| Body Control Module (BCM) | Automotive Infotainment Power Sequencer |
Use Scenario: Provides stable 3.3V rail to microcontroller and LIN transceivers in door modules, seat controllers, and lighting nodes. IC Role / Device Role / Timing Role: Low-IQ regulator with ENABLE/HOLD logic for controlled wake-up/sleep transitions synchronized to vehicle bus activity. Use Value: 300mA output supports multiple peripherals; shutdown current <27μA minimizes parasitic drain during vehicle off-state. | Use Scenario: Generates and sequences 5V and 1.8V rails for SoC, DDR memory, and audio codecs in head-unit designs. IC Role / Device Role / Timing Role: Supervisory regulator coordinating power-up timing and asserting reset to SoC until all supplies stabilize. Use Value: Fixed 50ms reset timeout (D3) ensures deterministic boot window; CSRT adjustment allows fine-tuning for multi-rail sequencing delays. |
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 |
|---|---|---|---|
| MAX6795TPLD2/V+ | Same family, 3.3V preset output, 12.5ms reset timeout (D2), AEC-Q100 qualified | Targeted at 3.3V MCU domains where shorter reset hold time is acceptable | Select when fixed 3.3V output and faster reset recovery are required; not drop-in due to different reset timing and voltage |
| TLV70733PDQNR | Lower input range (2.5V–6.5V), no watchdog or HOLD, 200mA output, SOT-23-5 | Suitable only for post-regulated 3.3V domains without automotive transients or supervision needs | Use only in non-automotive, low-voltage, cost-sensitive applications lacking supervision requirements |
Compared with MAX6795TPLD2/V+, the MAX6795TPYD3+T provides longer 50ms reset hold for robust MCU initialization; compared with TLV70733PDQNR, it adds 72V tolerance, watchdog, HOLD, and AEC-Q100 compliance - making it uniquely suited for primary automotive power rails.
Availability
MAX6795TPYD3+T is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and body control modules requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for MAX6795TPYD3+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, mixed-signal, and power-management ICs for automotive, industrial, and communications markets.
The MAX6795TPYD3+T belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with integrated supervision - engineered specifically for automotive power domains needing load-dump resilience, ultra-low IQ, and functional safety-aware reset/watchdog features.
FAQ
What output voltage does the MAX6795TPYD3+T deliver?
The MAX6795TPYD3+T delivers a preset 1.8V output voltage, as indicated by the "Y" in the part number per Maxim's ordering guide (Y = 1.8V). This is confirmed in Table 1 of the datasheet, where Y corresponds to 1.8V nominal output with 87.5% reset threshold. The device can also be configured for adjustable output (1.8V–11V) using the SET pin and external resistor divider - but the MAX6795TPYD3+T is shipped with 1.8V factory preset.
Does the MAX6795TPYD3+T support watchdog functionality?
Yes, the MAX6795TPYD3+T includes a configurable watchdog timer with fixed 280ms minimum timeout (when CSWT tied to OUT) or capacitor-adjustable period. It features WD-DIS pin for hardware-level disable, and supports fast/slow fault detection modes. The watchdog monitors WDI transitions and asserts RESET if no valid edge occurs within the timeout window - a core feature confirmed in the General Description and Electrical Characteristics sections.
What is the purpose of the HOLD pin on the MAX6795TPYD3+T?
The HOLD pin on the MAX6795TPYD3+T enables self-holding behavior: once the regulator is enabled via ENABLE, pulling HOLD low sustains regulation even if ENABLE is subsequently deasserted. Releasing HOLD shuts down the output. This eliminates external latch components in ignition-switched automotive systems - a documented function in the Enable and Hold Inputs section and Functional Diagram (page 14).
Is the MAX6795TPYD3+T AEC-Q100 qualified?
No, the MAX6795TPYD3+T is not AEC-Q100 qualified. While the datasheet lists AEC-Q100 qualification for MAX6795TPLD2/V+ and MAX6795TPSD2/V+, the MAX6795TPYD3+T variant appears only in the general ordering table without "/V+" suffix or explicit AEC-Q100 notation. Its -40°C to +125°C operating range meets automotive temperature requirements, but formal stress-test qualification applies only to designated /V+ variants.
What package type and thermal performance does the MAX6795TPYD3+T use?
The MAX6795TPYD3+T uses a 20-pin TQFN-EP package (5mm × 5mm) with exposed pad connected to GND. Per the datasheet, this package dissipates up to 2.7W and supports continuous operation under high ambient temperature, high battery voltage, and high load-current conditions - validated by derating curves showing 2666.7mW at TA = +70°C and 33.3mW/°C above.
MAX6795TPYD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- 35ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPYD3+T FAQ
1.How can I place an order for MAX6795TPYD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPYD3+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 MAX6795TPYD3+T reliable?
The price and inventory of MAX6795TPYD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPYD3+T is usually 5 days.
3.What payment methods are accepted for MAX6795TPYD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPYD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPYD3+T?
MAX6795TPYD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPYD3+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 MAX6795TPYD3+T?
For technical support, including MAX6795TPYD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPYD3+T requirements.
6.How does Aetrix verify that MAX6795TPYD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6795TPYD3+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 MAX6795TPYD3+T meets industry standards.
7.What is the process for return or replacement of MAX6795TPYD3+T?
All MAX6795TPYD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPYD3+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 MAX6795TPYD3+T part is unused and in its original packaging.
Return procedure for MAX6795TPYD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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