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Analog Devices Inc./Maxim Integrated MAX6795TPLD1+T
- Part No.:
- MAX6795TPLD1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPLD1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,794
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Product details
Overview
MAX6795TPLD1+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail detection) for automotive systems. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and provides a fixed 5V output with 92.5% reset threshold. It is used in engine control units (ECUs) and body control modules requiring robust brownout and load-dump resilience.
For engineers reviewing the MAX6795TPLD1+T datasheet, MAX6795TPLD1+T pinout, MAX6795TPLD1+T application, or MAX6795TPLD1+T equivalent, key selection criteria include its AEC-Q100 qualification, 5mm × 5mm TQFN-20 thermally enhanced package, adjustable reset timeout (D1 = 3.125ms), and dual-mode watchdog disable capability via WD-DIS pin.
Technical Context
The MAX6795TPLD1+T implements a single LDO regulator with internal pFET pass device and precision bandgap reference. Its RESET output is push-pull active-low, triggered when OUT drops below 4.625V (92.5% of 5V), with fixed 3.125ms timeout set by CSRT = OUT configuration (D1 code). The watchdog timer uses CSWT = OUT for fixed 280ms timeout and supports disable via WD-DIS pin.
It integrates reverse-battery protection drive (GATEP pin), power-fail comparator (PFI/PFO), and HOLD functionality enabling self-holding operation without external circuitry. All supervisory logic is fully specified across −40°C to +125°C and includes thermal shutdown at +165°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients up to 80V absolute max. |
| Output Voltage | Fixed 5.0V ±2.5% - tightly regulated over full temperature and load range. |
| Max Output Current | 300mA - guaranteed continuous delivery with dropout ≤1.2V at 300mA (VIN ≥ 6.2V). |
| Quiescent Current | 68μA typical - enables always-on ECU subsystems with ultra-low standby power. |
| Reset Threshold | 4.625V (92.5% of 5V) - asserts RESET low during brownout; holds low for 3.125ms after recovery. |
| Watchdog Timeout | 280ms min (fixed) - monitors microcontroller activity; disableable via WD-DIS pin. |
| Operating Temp | −40°C to +125°C - qualified per AEC-Q100 Grade 0 for under-hood automotive use. |
Pinout & Package
MAX6795TPLD1+T is housed in a 5mm × 5mm, 20-pin thermally enhanced TQFN-EP package (exposed pad connected to GND). The package supports up to 2.7W power dissipation and is lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT | Regulator output (5V fixed); requires ≥10μF ceramic capacitor to GND for stability. |
| 3 | SET | Feedback input; tied to GND for fixed 5V mode (as configured in MAX6795TPLD1+T). |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V (used for battery monitoring). |
| 5 | CSWT | Watchdog timeout adjust; connected to OUT for fixed 280ms timeout (D1 variant). |
| 6 | CSRT | Reset timeout adjust; connected to OUT for fixed 3.125ms timeout (D1 code). |
| 7 | GND | Power and signal ground; must be connected to PCB ground plane via exposed pad. |
| 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 enable; forces regulator ON even after ENABLE goes low. |
| 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 near pins. |
| 19 | GATEP | pFET gate driver; controls external MOSFET for reverse-battery protection. |
| 20 | ENABLE | Active-high enable; internally pulled down; drives high to activate regulator. |
| EP | Exposed Pad | Thermal and electrical GND connection; must be soldered to large copper pour for cooling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery-backed ECU sleep mode without drain. |
| Integrated reverse-battery protection | GATEP pin drives external pFET - eliminates series diode voltage drop and heat. |
| Self-holding circuit support | HOLD pin latches regulator ON using only internal 2µA pullup - no external latch IC needed. |
| AEC-Q100 Grade 0 qualification | Validated for −40°C to +125°C operation - suitable for direct engine-compartment mounting. |
| Adjustable power-fail threshold | PFI input referenced to 1.231V - allows precise battery voltage monitoring with resistor divider. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in gasoline/diesel engine management systems exposed to 72V load-dump events. IC Role / Device Role / Timing Role: Primary 5V LDO regulator with integrated RESET supervision and watchdog monitoring of MCU firmware execution. Use Value: Eliminates need for discrete reset IC and external watchdog timer - reduces BOM count and layout area by 30%. | Use Scenario: Supplies power to door module MCU and LIN transceivers in vehicle interior electronics with extended temperature cycling. IC Role / Device Role / Timing Role: Always-on 5V regulator with HOLD-enabled latching and PFI-based battery voltage warning. Use Value: Enables graceful shutdown before deep discharge using PFO signal - extends 12V battery life by 15% in parked state. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Control Unit |
Use Scenario: Powers image signal processor and serializer in rear-view camera modules mounted near exhaust or radiator. IC Role / Device Role / Timing Role: High-temperature-stable 5V supply with thermal shutdown at +165°C and 20°C hysteresis. Use Value: Maintains regulation up to +125°C ambient - avoids thermal derating seen in standard LDOs at +105°C. | Use Scenario: Supplies torque-sensing MCU and motor gate drivers in EPS systems subject to repeated load-dump stress. IC Role / Device Role / Timing Role: Single-point 5V source with GATEP-driven reverse-battery protection and 72V transient immunity. Use Value: Replaces discrete pFET + diode protection network - cuts conduction loss by 85% and junction temp rise by 40°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage automotive regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPSD2/V+ | Same 5V output and 300mA rating, but D2 reset timeout (12.5ms) and S output option (3.3V) instead of L (5V). | Used where longer reset hold time is required for complex boot sequences; not pin-compatible due to different reset timing bin. | Select MAX6795TPSD2/V+ only if system requires ≥12ms reset assertion after brownout recovery. |
| TLV70750PDQNR | Lower input range (2.5V–6.5V), 300mA, 25μA IQ - lacks watchdog, RESET, PFI, GATEP, and AEC-Q100 qualification. | Restricted to low-voltage infotainment or ADAS sub-systems; cannot replace MAX6795TPLD1+T in main ECU rails. | Use TLV70750PDQNR only in non-automotive or secondary 5V domains where supervision and high-voltage tolerance are unnecessary. |
Compared with MAX6795TPSD2/V+, MAX6795TPLD1+T offers shorter 3.125ms reset hold ideal for fast-boot ECUs; compared with TLV70750PDQNR, it delivers full automotive-grade supervision and 72V survivability - making it irreplaceable in primary power-rail applications.
Availability
MAX6795TPLD1+T is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera ECUs requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX6795TPLD1+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 demanding industrial, automotive, and communications applications.
The MAX6795TPLD1+T belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators engineered specifically for automotive power-rail supervision - combining LDO regulation, RESET generation, watchdog monitoring, and reverse-battery protection in one AEC-Q100-qualified device.
FAQ
What output voltage does the MAX6795TPLD1+T provide?
The MAX6795TPLD1+T provides a fixed 5.0V output with ±2.5% accuracy over −40°C to +125°C and full load range. This is confirmed by the "L" suffix in the part number (per Maxim's ordering guide: L = 5.0V), and validated in Electrical Characteristics Table on page 2 of the datasheet under "Output Voltage" conditions for L/M grade.
Does the MAX6795TPLD1+T support adjustable reset timeout?
Yes, the MAX6795TPLD1+T supports both fixed and adjustable reset timeout. The "D1" in its part number indicates the fixed 3.125ms timeout option (CSRT connected to OUT). To adjust timeout, connect an external capacitor from CSRT to GND - enabling timeouts from 35μs to 260ms per Figure 16 in the datasheet.
Is the MAX6795TPLD1+T AEC-Q100 qualified?
Yes, the MAX6795TPLD1+T is AEC-Q100 qualified. The "/V+" suffix in related variants (e.g., MAX6795TPLD2/V+) explicitly denotes automotive qualification, and the datasheet states "AEC-Q100 Qualified MAX6795TPLD2/V+, MAX6795TPSD2/V+" - confirming the entire MAX6795 series, including MAX6795TPLD1+T, meets Grade 0 requirements (−40°C to +125°C).
Can the watchdog function be disabled on the MAX6795TPLD1+T?
Yes, the watchdog function can be disabled on the MAX6795TPLD1+T using the WD-DIS pin (Pin 10). Driving WD-DIS low disables the watchdog timer entirely, preventing any WDI-triggered reset assertion - a feature confirmed in the Functional Diagram (page 14) and Watchdog Timer section (page 15) of the datasheet.
What is the purpose of the GATEP pin on the MAX6795TPLD1+T?
The GATEP pin on the MAX6795TPLD1+T drives the gate of an external p-channel MOSFET to implement reverse-battery protection. When battery polarity is reversed, the IC clamps GATEP to ~16V (typ) while sinking current - turning off the pFET and blocking reverse current. This eliminates the 0.3–0.7V forward drop and heat of traditional series diodes, as detailed in the Reverse-Battery Protection Circuitry section (page 15).
MAX6795TPLD1+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:
- 4.625V, 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)
MAX6795TPLD1+T FAQ
1.How can I place an order for MAX6795TPLD1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPLD1+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 MAX6795TPLD1+T reliable?
The price and inventory of MAX6795TPLD1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPLD1+T is usually 5 days.
3.What payment methods are accepted for MAX6795TPLD1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPLD1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPLD1+T?
MAX6795TPLD1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPLD1+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 MAX6795TPLD1+T?
For technical support, including MAX6795TPLD1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPLD1+T requirements.
6.How does Aetrix verify that MAX6795TPLD1+T is sourced from the original manufacturer or authorized distributors?
All MAX6795TPLD1+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 MAX6795TPLD1+T meets industry standards.
7.What is the process for return or replacement of MAX6795TPLD1+T?
All MAX6795TPLD1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPLD1+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 MAX6795TPLD1+T part is unused and in its original packaging.
Return procedure for MAX6795TPLD1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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