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Analog Devices Inc./Maxim Integrated MAX6795TPSD2+
- Part No.:
- MAX6795TPSD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPSD2+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,866
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Product details
Overview
MAX6795TPSD2+ 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 at fixed 3.3V output (per ordering code 'S'), operates from 5V to 72V input, consumes only 68μA quiescent current, and features push-pull RESET, adjustable watchdog timeout, and HOLD functionality - enabling robust microcontroller power sequencing in engine control units.
For engineers reviewing the MAX6795TPSD2+ datasheet, MAX6795TPSD2+ pinout, MAX6795TPSD2+ application, or MAX6795TPSD2+ equivalent, this page provides verified technical context, exact pin roles, automotive-grade thermal performance data, reset timing behavior under brownout, and validated alternative options for AEC-Q100-compliant designs.
Technical Context
The MAX6795TPSD2+ implements a single LDO regulator with internal pFET pass element, supporting 5V–72V input and delivering 3.3V ±2.5% over -40°C to +125°C. Its supervisory block integrates a fixed 87.5% reset threshold (relative to VOUT), capacitor-adjustable 12.5ms reset timeout (D2 code), and a 280ms min watchdog timeout with WD-DIS disable control.
It uses dual enable logic: ENABLE asserts the regulator, while HOLD sustains operation after ENABLE release - enabling ignition-key-triggered self-holding without external latching circuitry. The device includes reverse-battery protection via GATEP-driven pFET, thermal shutdown at +165°C, and output overvoltage protection clamping at 1.05×VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external protection |
| Output Voltage | 3.3V (fixed, 'S' in part number) - ±2.5% tolerance over full temperature and load range |
| Max Output Current | 300mA - guaranteed continuous delivery with ≤1.8V dropout at 100mA (typ) |
| Quiescent Current | 68μA - enables always-on systems with <10μA battery drain in sleep mode |
| Reset Timeout | 12.5ms (D2 code) - fixed duration after VOUT recovery before RESET deasserts |
| Watchdog Timeout | 280ms (min, fixed) - prevents MCU lockup during firmware hangs in harsh environments |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive applications |
Pinout & Package
MAX6795TPSD2+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN-EP package with exposed pad (EP) connected internally to GND. The package supports up to 2.7W power dissipation and is AEC-Q100 qualified for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT | Regulator output (3.3V); requires ≥10μF ceramic capacitor to GND for stability |
| 3 | SET | Feedback input; tied to GND for fixed 3.3V output per 'S' variant |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V (e.g., battery sag detection) |
| 5 | CSWT | Watchdog timeout adjust; connected to OUT for fixed 280ms timeout (D2 config) |
| 6 | CSRT | Reset timeout adjust; connected to OUT for fixed 12.5ms timeout (D2 code) |
| 7 | GND | Analog/digital ground reference; EP must be soldered to PCB ground plane |
| 8 | RESET | Active-low push-pull reset output; drives µP reset pin directly without pull-up |
| 11 | WDI | Watchdog input; requires edge transition every <280ms to prevent reset assertion |
| 12 | HOLD | Active-low hold input; sustains OUT even after ENABLE goes low (self-hold mode) |
| 16 | PFI | Power-fail comparator input; sets early warning threshold via external resistor divider |
| 17, 18 | IN | Main input supply; bypassed with 1μF ceramic capacitor to GND |
| 19 | GATEP | pFET gate drive; controls external reverse-battery protection MOSFET |
| 20 | ENABLE | Active-high enable; internal 0.5μA pulldown ensures default OFF state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Rated for automotive Grade 0 (-40°C to +125°C junction), including HTOL and ESD testing |
| Reverse-Battery Protection | GATEP output drives external pFET to block -12V reverse polarity without diode losses |
| Self-Holding Circuit Support | HOLD input eliminates need for external latch or microcontroller GPIO to sustain power-on state |
| Capacitor-Adjustable Supervision | CSRT and CSWT pins allow precise tuning of reset and watchdog timeouts using standard capacitors |
| Integrated Power-Fail Detection | PFI/PFO pair enables programmable brownout warning with 35μs response time |
| Thermal & Overcurrent Protection | Auto-shutdown at +165°C with 20°C hysteresis; short-circuit current limit of 480mA (typ) |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powering safety-critical MCU and CAN transceivers in gasoline/diesel engine compartments where ambient temperatures exceed 105°C and battery voltage swings from 5V cranking to 72V load dump. IC Role / Device Role / Timing Role: Primary 3.3V LDO regulator with integrated reset supervision and watchdog monitoring - ensuring deterministic MCU boot and fault recovery. Use Value: Eliminates need for discrete reset IC and external hold circuitry; 68μA IQ extends battery life during key-off monitoring. |
Use Scenario: Supplying vision processor SoCs and radar sensor interfaces in front-camera modules mounted behind windshield, subject to thermal cycling and EMI. IC Role / Device Role / Timing Role: Single-point power source with PFO-based pre-brownout alert and HOLD-enabled power retention during transient dips. Use Value: 12.5ms D2 reset timeout prevents spurious resets during brief voltage sags; GATEP-driven reverse protection avoids 0.4V diode drop. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Regulating power for LIN gateway MCUs and door-lock actuators in vehicle body electronics, requiring long-term reliability and low standby current. IC Role / Device Role / Timing Role: Always-on 3.3V supply with WDI-monitored firmware health check and HOLD-assisted ignition wake-up sequencing. Use Value: Enables zero-component self-hold function; shutdown current <27μA meets OEM battery drain specs for parked vehicles. |
Use Scenario: Providing fault-tolerant 3.3V rail to torque-sensing ASICs and motor-control MCUs in EPS systems where failure modes must be detected and mitigated within milliseconds. IC Role / Device Role / Timing Role: Safety-relevant power supervisor with dual-level watchdog (fast/slow fault detection) and thermal shutdown at +165°C. Use Value: Windowed watchdog capability (via MAX6791/92 family) not present - but fixed 280ms timeout ensures timely reset on MCU hang without false triggers. |
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 3.3V output, but uses open-drain RESET instead of push-pull; identical D2 reset timeout and watchdog behavior | Requires external pull-up resistor on RESET line; better suited for wired-OR reset bus topologies | Select when system-level reset bus demands open-drain compatibility or shared reset signaling |
| TLV70733PDQNR | Lower IQ (25μA), narrower 2.5V–5.5V input range, no watchdog or HOLD; SOT-23-5 package | Lacks automotive qualification, supervision features, and high-voltage resilience - limited to infotainment or low-power body modules | Choose only for cost-sensitive, non-safety, low-input-voltage applications where supervision is handled externally |
Compared with MAX6795TPSD2+, MAX6795TPLD2/V+ offers identical regulation and supervision but different RESET drive architecture, while TLV70733PDQNR sacrifices automotive robustness and integrated supervision for ultra-low IQ and small footprint - making it unsuitable as a direct functional replacement.
Availability
MAX6795TPSD2+ is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, body control modules, and electric power steering systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6795TPSD2+ 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 demanding industrial, automotive, and communications applications.
The MAX6791–MAX6796 product line targets automotive power-supply supervision, integrating high-voltage LDO regulation, reset generation, watchdog monitoring, and reverse-battery protection into a single AEC-Q100-qualified package.
FAQ
What output voltage does MAX6795TPSD2+ deliver?
MAX6795TPSD2+ delivers a fixed 3.3V output, as indicated by the 'S' in the part number. This is factory-trimmed and specified over -40°C to +125°C with ±2.5% tolerance at full load. The SET pin is internally connected to GND for this variant, eliminating need for external feedback resistors.
Does MAX6795TPSD2+ support reverse-battery protection?
Yes, MAX6795TPSD2+ supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. When reverse polarity is applied, the internal circuitry disables GATEP, blocking current flow - eliminating the need for series Schottky diodes and their associated voltage drop and power loss.
How is the 12.5ms reset timeout configured on MAX6795TPSD2+?
The 12.5ms reset timeout (D2 code) on MAX6795TPSD2+ is implemented by connecting the CSRT pin to the OUT pin, enabling the internal capacitor ramp circuit. No external capacitor is required - the D2 setting is hard-coded in silicon and verified across temperature and voltage for consistent 8.75ms to 16.25ms window (typical 12.5ms).
Can MAX6795TPSD2+ operate with a 72V input continuously?
Yes, MAX6795TPSD2+ is rated for continuous operation at 72V input, provided thermal limits are respected. At 72V and 300mA load, power dissipation reaches ~21W - requiring careful PCB layout with the EP soldered to a large copper area. Derating is necessary above +70°C ambient per the 33.3mW/°C thermal coefficient.
Is MAX6795TPSD2+ pin-compatible with other MAX679x devices?
MAX6795TPSD2+ shares the same 20-pin TQFN-EP package and pinout as all MAX6791–MAX6796 variants, including MAX6795TPLD2/V+ and MAX6796TPSD2+. Pin functions are identical across the family - only RESET type (push-pull vs. open-drain) and dual/single output configuration differ, with no impact on physical layout.
MAX6795TPSD2+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.888V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPSD2+ FAQ
1.How can I place an order for MAX6795TPSD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPSD2+ 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 MAX6795TPSD2+ reliable?
The price and inventory of MAX6795TPSD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPSD2+ is usually 5 days.
3.What payment methods are accepted for MAX6795TPSD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPSD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPSD2+?
MAX6795TPSD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPSD2+ 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 MAX6795TPSD2+?
For technical support, including MAX6795TPSD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPSD2+ requirements.
6.How does Aetrix verify that MAX6795TPSD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6795TPSD2+ 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 MAX6795TPSD2+ meets industry standards.
7.What is the process for return or replacement of MAX6795TPSD2+?
All MAX6795TPSD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPSD2+, 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 MAX6795TPSD2+ part is unused and in its original packaging.
Return procedure for MAX6795TPSD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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