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Analog Devices Inc./Maxim Integrated MAX6795TPTD1+
- Part No.:
- MAX6795TPTD1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPTD1+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,450
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Product details
Overview
MAX6795TPTD1+ 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. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and supports fixed 5V/3.3V/2.5V/1.8V or adjustable 1.8V–11V output - used in engine control units (ECUs) and body control modules under load-dump conditions.
For engineers reviewing the MAX6795TPTD1+ datasheet, MAX6795TPTD1+ pinout, MAX6795TPTD1+ application, or MAX6795TPTD1+ equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, 420mV typical dropout at 100mA, capacitor-adjustable reset/watchdog timeout, and dual enable/hold logic for ignition-controlled self-holding circuits.
Technical Context
The MAX6795TPTD1+ 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 a fixed (35μs–200ms) or capacitor-adjustable timeout period after recovery.
It integrates a programmable watchdog timer with fixed 280ms minimum timeout or external capacitor adjustment, plus windowed watchdog capability (only on MAX6791/MAX6792 - not applicable here). The HOLD input enables latch-up behavior without external components: once enabled, pulling HOLD low sustains regulation even if ENABLE goes inactive.
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 functionality in battery-sensitive automotive modules. |
| Output Current | 300mA max - sufficient to power microcontrollers, CAN transceivers, and sensors in ECUs. |
| Dropout Voltage | 420mV typ at 100mA - ensures stable regulation even at low VIN (e.g., cold-crank 6V). |
| Reset Threshold Accuracy | ±1.5% over -40°C to +125°C - guarantees reliable brownout detection across full automotive temperature range. |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood automotive deployment. |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation in high-ambient environments. |
Pinout & Package
MAX6795TPTD1+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN package with exposed pad (EP) connected internally to GND. The EP must be soldered to PCB ground plane for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT | Regulator output (fixed 5V/3.3V/2.5V/1.8V or adjustable 1.8V–11V); requires ≥10μF ceramic capacitor to GND. |
| 3 | SET | Feedback input - connect to GND for preset voltage; use 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 - connect to OUT for fixed 280ms timeout; capacitor to GND enables adjustment. |
| 6 | CSRT | Reset timeout adjust - connect to OUT for fixed timeout options (35μs–200ms); capacitor enables fine tuning. |
| 7 | GND | Analog/digital ground reference - tie to system ground plane; EP also connects here. |
| 8 | RESET | Active-low reset output - push-pull or open-drain; asserts during brownout or watchdog fault. |
| 11 | WDI | Watchdog input - requires edge transition within timeout period to prevent reset assertion. |
| 12 | HOLD | Active-low hold control - latches regulator ON after initial enable; releases shutdown when pulled high. |
| 16 | PFI | Power-fail comparator input - set threshold via resistor divider to monitor battery or pre-regulated rail. |
| 17, 18 | IN | Main regulator input - bypass with ≥1μF ceramic capacitor to GND near pins. |
| 19 | GATEP | pFET gate drive - controls external p-channel MOSFET for reverse-battery protection (no diode drop). |
| 20 | ENABLE | Active-high enable - internal 0.5μA pulldown; driven by ignition switch or microcontroller GPIO. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby life in always-on automotive modules. |
| Integrated reverse-battery protection | GATEP pin drives external pFET - eliminates series diode, preserving >99% efficiency at 300mA. |
| Self-holding circuit support | HOLD input allows ignition-key-triggered latching without external logic or capacitors. |
| Capacitor-adjustable timing | CSRT and CSWT pins support precise, production-tunable reset and watchdog timeouts. |
| AEC-Q100 qualified | Qualified per Grade 0 (-40°C to +150°C junction) - validated for under-hood ECU use. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers MCU, CAN transceiver, and sensor interface in gasoline/diesel engine management systems exposed to 72V load-dump spikes. IC Role / Device Role / Timing Role: Primary 5V/3.3V LDO with RESET supervision and watchdog monitoring of MCU firmware execution. Use Value: 72V input tolerance and thermal shutdown prevent failure during cranking/load-dump; 68μA IQ extends battery life during key-off. | Use Scenario: Supplies power to door module microcontrollers and LIN transceivers in vehicle body electronics. IC Role / Device Role / Timing Role: Single-supply regulator with HOLD-latched enable for ignition-controlled wake-up and orderly shutdown. Use Value: HOLD function eliminates need for external latch circuit; PFI comparator triggers safe shutdown before battery depletion. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Telematics Control Unit (TCU) |
Use Scenario: Powers image signal processor and serializer in rear-view or surround-view camera modules mounted near engine bay. IC Role / Device Role / Timing Role: High-reliability 3.3V regulator with RESET assertion during brownout and watchdog fault detection. Use Value: 125°C ambient rating and 2.7W thermal dissipation ensure stable operation in confined, high-temp enclosures. | Use Scenario: Supplies LTE modem, GNSS receiver, and security MCU in cellular-connected vehicle telematics units. IC Role / Device Role / Timing Role: Supervised power source with PFO-driven early-warning interrupt and watchdog-enforced firmware health check. Use Value: Adjustable CSWT/CSRT allows matching reset/watchdog timing to modem boot sequence and OTA update windows. |
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+ | AEC-Q100 qualified, same pinout and electrical specs; differs only in reset timeout (D2 = 12.5ms vs. D1 = 3.125ms) and automotive-grade marking (/V+). | Required for new automotive designs requiring formal AEC-Q100 documentation and traceability. | Select MAX6795TPLD2/V+ when AEC-Q100 compliance is mandatory; otherwise MAX6795TPTD1+ suffices for industrial or legacy automotive use. |
| TPS7B8750QKVURQ1 | TI's AEC-Q100 40V LDO with 350mA output, 30μA IQ, but no integrated watchdog or HOLD function; requires external reset IC. | Lacks built-in supervisory features - needs discrete reset/watchdog IC, increasing BOM count and layout area. | Choose TPS7B8750QKVURQ1 only if ultra-low IQ (30μA) is critical and external supervision is acceptable. |
Compared with MAX6795TPLD2/V+, MAX6795TPTD1+ offers identical regulation and supervision but lacks formal AEC-Q100 certification; versus TPS7B8750QKVURQ1, it integrates watchdog/HOLD/PFI while trading ~38μA higher IQ for significant system-level simplification.
Availability
MAX6795TPTD1+ is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera ECUs, and telematics control units requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX6795TPTD1+ 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 MAX679x family targets automotive power-supply supervision, combining high-input-voltage LDO regulation with RESET, watchdog, power-fail, and hold-control functions in a single AEC-Q100-capable package.
FAQ
What output voltage options does the MAX6795TPTD1+ support?
The MAX6795TPTD1+ supports fixed output voltages of 5.0V, 3.3V, 2.5V, or 1.8V (determined by factory preset), and can be configured for any adjustable output from 1.8V to 11V using an external resistive divider connected to the SET pin. The "D1" suffix indicates a 3.125ms reset timeout and 92.5% reset threshold for L/M (5V/3.3V) outputs.
Does the MAX6795TPTD1+ include reverse-battery protection?
Yes, the MAX6795TPTD1+ integrates reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. This eliminates the need for a series Schottky diode, reducing voltage drop and power loss - critical for maintaining 5V/3.3V regulation during cold-crank conditions down to 6V input.
How does the HOLD function work on the MAX6795TPTD1+?
The HOLD input on the MAX6795TPTD1+ enables self-holding behavior: when ENABLE is asserted and then released, pulling HOLD low sustains regulator output (OUT) indefinitely. Releasing HOLD (pulling high or leaving open) shuts down the output. This allows ignition-switch-triggered latching without external components - a key feature for automotive power sequencing.
Can the watchdog timeout period of the MAX6795TPTD1+ be adjusted?
Yes, the MAX6795TPTD1+ watchdog timeout is adjustable via the CSWT pin: connecting CSWT to OUT selects the fixed 280ms minimum timeout, while connecting a capacitor from CSWT to GND enables user-defined timeout scaling (e.g., 1500pF yields ~236ms). Unlike MAX6791/MAX6792, it does not support windowed watchdog mode.
Is the MAX6795TPTD1+ AEC-Q100 qualified?
No, the MAX6795TPTD1+ is not AEC-Q100 qualified. It is rated for -40°C to +125°C operation and designed for automotive environments, but formal AEC-Q100 qualification applies only to variants marked with "/V+" (e.g., MAX6795TPLD2/V+). For production automotive programs requiring certified parts, that variant must be selected instead of MAX6795TPTD1+.
MAX6795TPTD1+ 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:
- 3.053V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 2.187ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPTD1+ FAQ
1.How can I place an order for MAX6795TPTD1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPTD1+ 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 MAX6795TPTD1+ reliable?
The price and inventory of MAX6795TPTD1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPTD1+ is usually 5 days.
3.What payment methods are accepted for MAX6795TPTD1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPTD1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPTD1+?
MAX6795TPTD1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPTD1+ 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 MAX6795TPTD1+?
For technical support, including MAX6795TPTD1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPTD1+ requirements.
6.How does Aetrix verify that MAX6795TPTD1+ is sourced from the original manufacturer or authorized distributors?
All MAX6795TPTD1+ 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 MAX6795TPTD1+ meets industry standards.
7.What is the process for return or replacement of MAX6795TPTD1+?
All MAX6795TPTD1+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPTD1+, 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 MAX6795TPTD1+ part is unused and in its original packaging.
Return procedure for MAX6795TPTD1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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