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Analog Devices Inc./Maxim Integrated MAX6795TPYD1+
- Part No.:
- MAX6795TPYD1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPYD1+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,501
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Product details
Overview
The MAX6795TPYD1+ from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail comparator, 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 voltage - enabling robust power management in engine control units and body electronics.
For engineers reviewing the MAX6795TPYD1+ datasheet, MAX6795TPYD1+ pinout, MAX6795TPYD1+ application, or MAX6795TPYD1+ equivalent, key selection considerations include its AEC-Q100-qualified 20-pin TQFN package, -40°C to +125°C operation, 420mV typical dropout at 100mA, open-drain/push-pull RESET with capacitor-adjustable timeout, and dual-mode watchdog with disable capability.
Technical Context
The MAX6795TPYD1+ integrates a high-input-voltage LDO regulator with precision supervisory circuitry: a reset generator triggered by OUT voltage drop below 92.5%/87.5% thresholds, a programmable watchdog timer (280ms fixed or capacitor-adjustable), and a power-fail comparator referenced to 1.231V. Its HOLD input enables self-holding behavior without external components, while ENABLE provides standard ON/OFF control.
It implements reverse-battery protection via GATEP-driven pFET gate drive, thermal shutdown at +165°C with 20°C hysteresis, short-circuit current limiting (400–480mA), and output overvoltage protection clamping at 105–110% of VOUT. All specifications are fully characterized across -40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external protection. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-powered automotive modules. |
| Output Current | 300mA max - sufficient to power microcontrollers, sensors, and CAN transceivers directly. |
| Dropout Voltage | 420mV typ at 100mA - maintains regulation under low VIN conditions (e.g., cold-crank at 6V). |
| Reset Threshold Accuracy | ±1.5% over temperature - ensures reliable µP reset during brownout without calibration. |
| Watchdog Timeout | 280ms min (fixed) or capacitor-adjustable - configurable fault detection window for diverse firmware execution times. |
| Operating Temperature | -40°C to +125°C - meets full automotive under-hood environmental requirements. |
Pinout & Package
MAX6795TPYD1+ is housed in a thermally enhanced 20-pin TQFN package (5mm × 5mm, exposed pad), rated for up to 2.7W power dissipation and qualified per AEC-Q100.
| 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 output capacitor. |
| 3 | SET | Feedback input: grounded for preset voltage; connected to resistive divider for adjustable output. |
| 4 | PFO | Active-low open-drain power-fail output - asserts when PFI falls below 1.231V threshold. |
| 5 | CSWT | Watchdog timeout adjust: tied to OUT for fixed 280ms timeout; capacitor-to-GND for adjustable period. |
| 6 | CSRT | Reset timeout adjust: tied to OUT for fixed timeout (35μs/3.125ms/12.5ms/50ms/200ms); capacitor-to-GND for user-defined delay. |
| 7 | GND | Analog/digital ground reference - must be connected to PCB ground plane. |
| 8 | RESET | Active-low reset output - push-pull or open-drain; asserts when OUT drops below threshold and holds for timeout period. |
| 11 | WDI | Watchdog input - requires edge transition within timeout window to prevent RESET assertion. |
| 12 | HOLD | Active-low hold control - forces regulator ON even after ENABLE goes low; enables self-holding circuits. |
| 16 | PFI | Power-fail comparator input - used with external resistor divider to set custom undervoltage warning threshold. |
| 17, 18 | IN | Main regulator input - bypassed with ≥1μF capacitor to GND for stability. |
| 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 regulator output. |
| EP | Exposed Pad | Thermal pad - must be soldered to PCB ground plane for optimal thermal performance (2.7W dissipation). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery life in always-on automotive modules (e.g., telematics, alarm systems). |
| Integrated reverse-battery protection | GATEP output drives external pFET - eliminates series diode losses and voltage drop in 12V/24V systems. |
| Self-holding circuit support | HOLD input latches regulator ON without external latch IC or discrete logic - reduces BOM count and board space. |
| Capacitor-adjustable timing | CSRT and CSWT pins allow precise tuning of reset and watchdog timeouts using standard ceramic capacitors - no trimming required. |
| AEC-Q100 qualification | Qualified for automotive applications - guarantees reliability under harsh thermal, vibration, and EMI conditions. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers MCU, CAN transceiver, and analog sensors in gasoline/diesel engine management systems exposed to wide input voltage swings (6V–16V) and high ambient temperatures. IC Role / Device Role / Timing Role: Primary 5V/3.3V power source with integrated reset supervision and watchdog - ensures deterministic boot and runtime recovery during cranking or load dump. Use Value: 72V input tolerance and thermal shutdown prevent failure during 80V load-dump events; 68μA IQ extends battery life during key-off monitoring. | Use Scenario: Supplies power to door module microcontrollers, LIN transceivers, and LED drivers in vehicle interior lighting and access systems. IC Role / Device Role / Timing Role: Single-supply regulator with HOLD-enabled latching - sustains power during ignition switch transitions without external keep-alive circuitry. Use Value: Eliminates need for external latch IC or capacitor-based hold-up, reducing component count and improving system-level reliability. |
| Advanced Driver Assistance Systems (ADAS) | Telematics Control Unit (TCU) |
Use Scenario: Powers radar sensor MCU and interface logic in parking assist or blind-spot detection modules mounted near engine compartments. IC Role / Device Role / Timing Role: High-temperature-stable LDO with watchdog supervision - monitors firmware execution and triggers safe state entry on timeout. Use Value: -40°C to +125°C operation and 280ms watchdog ensure functional safety compliance (ISO 26262 ASIL-B capable) without derating. | Use Scenario: Provides always-on 3.3V supply to cellular modem, GNSS receiver, and secure element in connected car platforms. IC Role / Device Role / Timing Role: Micropower supervisor with PFI comparator - detects battery voltage sag and initiates graceful data save before shutdown. Use Value: 1.231V precision PFI threshold and 35μs response enable early warning of low-battery condition, preventing data corruption. |
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+ | Same 20-pin TQFN package, AEC-Q100 qualified, but preset 3.3V output and 50ms reset timeout (D2 option). | Designed for systems requiring factory-set 3.3V with medium-duration reset hold time - not field-adjustable. | Select MAX6795TPYD1+ when adjustable output voltage or different reset timeout (D1 = 3.125ms) is required. |
| TLV70733PDPWR | Lower input range (2.5V–5.5V), 300mA output, no watchdog or HOLD function, SOT-23-6 package. | Suitable only for post-regulated 3.3V domains - lacks automotive-grade input tolerance, supervision, or latching capability. | Use TLV70733PDPWR only in non-automotive, low-voltage, cost-sensitive applications without supervision needs. |
Compared with MAX6795TPSD2/V+, the MAX6795TPYD1+ offers flexible output voltage configuration (adjustable or preset Y-coded 5V) and shorter 3.125ms reset timeout; versus TLV70733PDPWR, it delivers full automotive robustness (72V input, AEC-Q100, watchdog, HOLD) at the cost of larger footprint and higher complexity.
Availability
MAX6795TPYD1+ is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS domain controllers requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6795TPYD1+ 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 MAX6795TPYD1+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with integrated supervision - engineered specifically for automotive power rails where load-dump immunity, ultra-low IQ, and functional safety features are mandatory.
FAQ
What output voltage does the MAX6795TPYD1+ deliver?
The MAX6795TPYD1+ delivers a fixed 5V output. The "Y" in the part number denotes the 5V preset option; it can also be configured as an adjustable regulator (1.8V–11V) by connecting the SET pin to an external resistive divider instead of grounding it. Output accuracy is ±1.5% over temperature and load.
Does the MAX6795TPYD1+ support reverse-battery protection?
Yes, the MAX6795TPYD1+ supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. This eliminates the need for lossy series diodes and maintains high efficiency during reverse-polarity events - a critical feature for automotive 12V/24V systems.
How is the reset timeout period configured on the MAX6795TPYD1+?
The MAX6795TPYD1+ uses the CSRT pin to configure reset timeout: tying CSRT to OUT selects a factory-fixed value (D1 = 3.125ms), while connecting a capacitor from CSRT to GND allows user-adjustable timeout (e.g., 10nF ≈ 3ms). The internal ramp current (1000nA) and threshold (1.218V) define the timing relationship.
Can the watchdog timer on the MAX6795TPYD1+ be disabled?
Yes, the watchdog timer on the MAX6795TPYD1+ 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 on RESET. WD-DIS is internally pulled up to OUT, so leaving it unconnected enables the watchdog by default.
What is the purpose of the HOLD pin on the MAX6795TPYD1+?
The HOLD pin on the MAX6795TPYD1+ enables self-holding behavior: when driven low after initial power-up, it keeps the regulator ON even if ENABLE is subsequently pulled low. Releasing HOLD (letting it float or pulling high) shuts down the output - allowing ignition-switch-based latching without external components.
MAX6795TPYD1+ 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:
- 2.187ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPYD1+ FAQ
1.How can I place an order for MAX6795TPYD1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPYD1+ 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 MAX6795TPYD1+ reliable?
The price and inventory of MAX6795TPYD1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPYD1+ is usually 5 days.
3.What payment methods are accepted for MAX6795TPYD1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPYD1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPYD1+?
MAX6795TPYD1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPYD1+ 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 MAX6795TPYD1+?
For technical support, including MAX6795TPYD1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPYD1+ requirements.
6.How does Aetrix verify that MAX6795TPYD1+ is sourced from the original manufacturer or authorized distributors?
All MAX6795TPYD1+ 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 MAX6795TPYD1+ meets industry standards.
7.What is the process for return or replacement of MAX6795TPYD1+?
All MAX6795TPYD1+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPYD1+, 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 MAX6795TPYD1+ part is unused and in its original packaging.
Return procedure for MAX6795TPYD1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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