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Analog Devices Inc./Maxim Integrated MAX6795TPLD4+T
- Part No.:
- MAX6795TPLD4+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPLD4+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,150
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Product details
Overview
MAX6795TPLD4+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 200ms fixed reset timeout period (D4 code). It is used in engine control units (ECUs) to power microcontrollers under harsh battery conditions.
For engineers reviewing the MAX6795TPLD4+T datasheet, MAX6795TPLD4+T pinout, MAX6795TPLD4+T application, or MAX6795TPLD4+T equivalent, key selection criteria include its AEC-Q100-qualified 5mm × 5mm TQFN package, 1.8V–11V adjustable or preset 5V/3.3V/2.5V/1.8V output, watchdog disable capability, HOLD self-hold functionality, and thermal/short-circuit protection across –40°C to +125°C.
Technical Context
The MAX6795TPLD4+T implements a single high-side pFET-based LDO architecture with internal feedback via SET pin, enabling precise output voltage regulation across wide input (5V–72V) and load (0–300mA) ranges. Its supervisory block integrates a fixed-threshold reset generator (92.5% of VOUT), capacitor-adjustable or factory-fixed 200ms reset timeout (D4), and a 280ms min watchdog timer with WD-DIS disable control.
It includes dedicated HOLD and ENABLE inputs for ignition-controlled latching behavior, reverse-battery protection via GATEP-driven external p-MOSFET, and a power-fail comparator (PFI/PFO) referenced to 1.231V. All safety features - thermal shutdown (+165°C), short-circuit current limiting (480mA typ), and output overvoltage protection (1.05×VOUT) - are fully specified over the automotive temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping. |
| Output Current | 300mA max - supports mid-power MCU cores and peripheral rails in ECU modules. |
| Quiescent Current | 68μA typ - enables always-on operation in vehicle sleep modes without battery drain. |
| Reset Timeout | 200ms (D4 code) - ensures reliable µP initialization after brownout recovery. |
| Dropout Voltage | 420mV typ at 100mA - maintains regulation down to VIN = VOUT + 0.42V, critical for low-VIN cold-crank scenarios. |
| Operating Temp | –40°C to +125°C - fully qualified for under-hood automotive environments. |
| AEC-Q100 Grade | Grade 0 - certified for passenger car powertrain and safety-critical systems. |
Pinout & Package
MAX6795TPLD4+T is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN-EP package (exposed pad connected to GND), rated for 2.7W continuous dissipation at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (preset 5V/3.3V/2.5V/1.8V or adjustable 1.8V–11V); requires ≥10μF ceramic output capacitor. |
| 3 | SET | Feedback node - tied to GND for preset outputs; connected to resistive divider for adjustable VOUT. |
| 4 | PFO | Open-drain power-fail output - asserts low when PFI < 1.231V; used for early battery-low warning. |
| 5 | CSWT | Watchdog timeout adjust - connected to OUT for fixed 280ms timeout; capacitor-to-GND for adjustable period. |
| 6 | CSRT | Reset timeout adjust - connected to OUT for fixed 200ms (D4); capacitor-to-GND for user-defined delay. |
| 7 | GND | Power and signal ground - must be connected to PCB ground plane via exposed pad. |
| 8 | RESET | Active-low reset output - push-pull or open-drain option; asserts during VOUT undervoltage or watchdog fault. |
| 11 | WDI | Watchdog input - requires edge transition within timeout window; resets on missing pulse or invalid timing. |
| 12 | HOLD | Active-low latch enable - forces regulator ON even after ENABLE goes low; enables ignition-key self-hold circuits. |
| 16 | PFI | Power-fail comparator input - accepts resistive divider to set custom undervoltage threshold (e.g., battery monitoring). |
| 17,18 | IN | Main input supply - bypassed with 1μF ceramic capacitor to GND; handles 72V transients. |
| 19 | GATEP | p-MOSFET gate driver - controls external reverse-battery protection FET; eliminates series diode loss. |
| 20 | ENABLE | Active-high enable - internally pulled down; drives high to activate regulator; works with HOLD for latching. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby life in always-on automotive modules. |
| Integrated HOLD function | Eliminates external latch circuitry - allows single-IC ignition-controlled power sequencing. |
| Dual-mode watchdog | Supports both standard timeout (280ms) and disable (via WD-DIS) - simplifies firmware validation and debug. |
| Reverse-battery protection drive | GATEP output directly drives p-FET - achieves <50mΩ effective RDS(on) with no forward voltage drop. |
| Thermal & short-circuit protection | +165°C shutdown with 20°C hysteresis - prevents damage during sustained overload or poor heatsinking. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance System (ADAS) Camera Module |
|---|---|
|
Use Scenario: Powers 32-bit MCU and CAN transceiver in gasoline/diesel ECU under cold-crank (5.5V) and load-dump (72V) conditions. IC Role / Device Role / Timing Role: Primary 5V/3.3V LDO with RESET supervision and watchdog monitoring of MCU firmware execution. Use Value: 68μA IQ extends stop-start battery life; HOLD enables ignition-triggered latching without external components. |
Use Scenario: Supplies image sensor and ISP in rear-view camera exposed to under-hood temperature extremes. IC Role / Device Role / Timing Role: Single 3.3V regulator with PFI monitoring for battery health alert and RESET assertion during voltage sag. Use Value: –40°C to +125°C rating ensures reliability; 200ms D4 reset timeout guarantees clean ISP boot after brownout. |
| Body Control Module (BCM) | Electric Power Steering (EPS) Controller |
|
Use Scenario: Provides 5V rail to LIN transceivers and door-lock actuators in centralized BCM with multiple wake sources. IC Role / Device Role / Timing Role: Always-on regulator with ENABLE/HOLD logic for controlled wake-up and graceful shutdown. Use Value: WD-DIS pin allows disabling watchdog during bootloader mode; low dropout preserves regulation at 6.2V cold-crank. |
Use Scenario: Powers torque-sensing ASIC and motor gate drivers in EPS system requiring functional safety compliance. IC Role / Device Role / Timing Role: Safety-critical 5V supply with dual independent protection: RESET for VOUT faults and PFO for pre-regulator monitoring. Use Value: AEC-Q100 Grade 0 qualification meets ISO 26262 ASIL-B requirements; thermal shutdown prevents overheating during stall events. |
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+ | Fixed 3.3V output, 12.5ms reset timeout (D2), same package and temp grade. | Used where shorter reset hold time is required for fast-boot MCUs; lacks D4's 200ms margin for slow-ramping loads. | Select when system boot timing demands faster reset deassertion and 3.3V is the required rail. |
| TLV70733PDPWR | Lower IQ (25μA), narrower 2.5V–5.5V input, no watchdog/HOLD/PFI, SOT-23-6 package. | Suitable only for post-regulated 3.3V domains (e.g., infotainment USB peripherals), not primary battery-fed rails. | Choose only for cost-sensitive, non-safety, low-voltage auxiliary rails - not a functional replacement for MAX6795TPLD4+T. |
Compared with MAX6795TPSD2/V+, the MAX6795TPLD4+T provides longer reset assertion for robust brownout recovery; compared with TLV70733PDPWR, it offers full automotive front-end capability - 72V tolerance, watchdog, HOLD, and AEC-Q100 - making it irreplaceable in primary ECU power stages.
Availability
MAX6795TPLD4+T is available at Aetrix Electronics and suitable for engine control units (ECUs), ADAS camera modules, and electric power steering (EPS) controllers requiring stable component supply across extended temperature and voltage stress conditions.
Supply support for MAX6795TPLD4+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 and mixed-signal ICs for automotive, industrial, and communications markets, with emphasis on high-reliability, low-power, and high-voltage solutions.
The MAX6795TPLD4+T belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators, engineered specifically for automotive power management where load-dump resilience, ultra-low IQ, and integrated supervision are mandatory.
FAQ
What output voltage options does the MAX6795TPLD4+T support?
The MAX6795TPLD4+T supports preset output voltages of 5.0V, 3.3V, 2.5V, or 1.8V - selected by tying the SET pin to GND - or an adjustable output from 1.8V to 11V using an external resistive divider between OUT, SET, and GND. The "L" suffix in the full ordering code (e.g., MAX6795TPLD4+T) indicates a 5V preset version; "T" denotes 3.3V. The MAX6795TPLD4+T itself is a 5V variant.
How is the 200ms reset timeout implemented in the MAX6795TPLD4+T?
The MAX6795TPLD4+T uses the "D4" suffix to denote a factory-trimmed 200ms reset timeout period. This is achieved by internal capacitor ramping from CSRT pin - when CSRT is connected to OUT (default configuration), the device asserts RESET for exactly 200ms (min 140ms, max 260ms) after VOUT rises above its 92.5% reset threshold. No external capacitor is needed for this fixed timing.
Can the watchdog function be disabled on the MAX6795TPLD4+T?
Yes, the watchdog function on the MAX6795TPLD4+T can be disabled using the WD-DIS pin. Driving WD-DIS low disables the watchdog timer entirely, preventing any WDI-related RESET assertions. When WD-DIS is high or connected to OUT, the watchdog remains active with its default 280ms timeout (or capacitor-adjustable period if CSWT is configured accordingly).
What is the purpose of the HOLD pin on the MAX6795TPLD4+T?
The HOLD pin on the MAX6795TPLD4+T enables self-holding behavior: once ENABLE is driven high and the regulator starts, pulling HOLD low keeps the output active even if ENABLE subsequently returns low. Releasing HOLD (to high or open) shuts down the regulator. This allows ignition-switch-based latching without external components - a key feature for automotive start-stop and accessory power sequencing.
Does the MAX6795TPLD4+T include reverse-battery protection?
The MAX6795TPLD4+T does not integrate reverse-battery protection but provides dedicated GATEP drive to control an external p-channel MOSFET. By connecting GATEP to the gate of a suitably rated p-FET between battery and IN, the device actively blocks reverse current while maintaining near-zero forward voltage drop - eliminating the power loss and heat of traditional series diodes.
MAX6795TPLD4+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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPLD4+T FAQ
1.How can I place an order for MAX6795TPLD4+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPLD4+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 MAX6795TPLD4+T reliable?
The price and inventory of MAX6795TPLD4+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPLD4+T is usually 5 days.
3.What payment methods are accepted for MAX6795TPLD4+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPLD4+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPLD4+T?
MAX6795TPLD4+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPLD4+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 MAX6795TPLD4+T?
For technical support, including MAX6795TPLD4+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPLD4+T requirements.
6.How does Aetrix verify that MAX6795TPLD4+T is sourced from the original manufacturer or authorized distributors?
All MAX6795TPLD4+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 MAX6795TPLD4+T meets industry standards.
7.What is the process for return or replacement of MAX6795TPLD4+T?
All MAX6795TPLD4+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPLD4+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 MAX6795TPLD4+T part is unused and in its original packaging.
Return procedure for MAX6795TPLD4+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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