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Analog Devices Inc./Maxim Integrated MAX6795TPLD4+
- Part No.:
- MAX6795TPLD4+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPLD4+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,548
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Product details
Overview
MAX6795TPLD4+ 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 5V (L option), operates from 5V to 72V input, consumes only 68μA quiescent current, and features a capacitor-adjustable 200ms reset timeout (D4) and fixed 280ms watchdog timeout - ideal for engine control units under load-dump conditions.
For engineers reviewing the MAX6795TPLD4+ datasheet, MAX6795TPLD4+ pinout, MAX6795TPLD4+ application, or MAX6795TPLD4+ equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, HOLD/ENABLE logic for ignition-controlled self-holding, adjustable output (1.8V–11V), and dual-supervision capability with independent reset and watchdog timing.
Technical Context
The MAX6795TPLD4+ implements a single L-option (5V preset) linear regulator with dropout voltage of 420mV (typ) at 100mA and thermal shutdown at +165°C. Its supervisory block integrates a fixed 92.5% reset threshold relative to VOUT and a 200ms reset timeout set via CSRT capacitor (D4 code), alongside a fixed 280ms watchdog timeout (CSWT = OUT).
It uses an internal 1.231V reference for both PFI comparator and SET feedback, supports reverse-battery protection via GATEP-driven pFET, and provides push-pull or open-drain RESET output with 0.4V VOL at 3.2mA sink - all specified across –40°C to +125°C ambient.
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 continuous - sufficient to power microcontrollers, CAN transceivers, and sensor interfaces in ECU modules. |
| Quiescent Current | 68μA - enables always-on functionality in battery-sensitive automotive applications (e.g., body control modules). |
| Reset Timeout | 200ms (D4 code) - capacitor-adjustable via CSRT pin; ensures reliable µP reset after brownout recovery. |
| Watchdog Timeout | 280ms (fixed, CSWT = OUT) - provides fail-safe monitoring of host MCU activity without external timing components. |
| Dropout Voltage | 420mV (typ) at 100mA - maintains regulation down to VIN = 5.42V when VOUT = 5V, critical for cold-crank operation. |
| Operating Temp | –40°C to +125°C - fully qualified for under-hood automotive environments per AEC-Q100. |
Pinout & Package
MAX6795TPLD4+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN-EP package (exposed pad connected to GND), rated for 2.7W dissipation and optimized for high-ambient automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (5V preset); requires ≥10μF ceramic capacitor to GND for stability and transient response. |
| 3 | SET | Feedback input; grounded for 5V preset, or connected to resistive divider for adjustable output (1.8V–11V). |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V - used for early battery-low warning or graceful shutdown. |
| 5 | CSWT | Watchdog timeout adjust; tied to OUT for fixed 280ms timeout (as in MAX6795TPLD4+). |
| 6 | CSRT | Reset timeout adjust; tied to OUT for D4-coded 200ms timeout - sets duration RESET stays low post-recovery. |
| 7 | GND | Analog/digital ground reference; must be connected to low-impedance PCB ground plane. |
| 8 | RESET | Active-low push-pull reset output; drives µP reset pin directly with 0.4V max VOL at 3.2mA sink. |
| 11 | WDI | Watchdog input; requires edge transition every ≤280ms to prevent reset assertion - monitors host MCU liveness. |
| 12 | HOLD | Active-low hold enable; forces regulator ON even after ENABLE goes low - enables ignition-key self-holding circuits. |
| 16 | PFI | Power-fail comparator input; configured with external resistor divider to set custom undervoltage detection threshold. |
| 17,18 | IN | Main regulator input; bypassed with 1μF capacitor to GND to suppress high-frequency noise and load-dump spikes. |
| 19 | GATEP | pFET gate driver; controls external p-channel MOSFET for reverse-battery protection - eliminates series diode loss. |
| 20 | ENABLE | Active-high enable; internally pulled down (0.5μA), driven by ignition signal to initiate power-up sequencing. |
| EP | Exposed Pad | Thermal pad tied to GND; mandatory connection to PCB ground plane for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby in always-on automotive modules without parasitic drain. |
| Integrated reverse-battery protection | GATEP output drives external pFET - eliminates 0.3–0.7V diode drop and associated heat, improving efficiency. |
| Self-holding circuit support | HOLD + ENABLE logic allows ignition-switched startup with sustained output after key-off - no external latch required. |
| Dual independent supervision | Separate reset timeout (CSRT) and watchdog timeout (CSWT) allow precise coordination of power-up sequencing and runtime fault detection. |
| AEC-Q100 qualification | Qualified for automotive Grade 0 (–40°C to +125°C), including stress testing for temperature cycling, HTOL, and ESD. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog sensors during cold-crank (5.5V min) and load-dump (72V transients). IC Role / Device Role / Timing Role: Primary 5V supply regulator with reset supervision and watchdog monitoring of MCU execution integrity. Use Value: 72V input range and 420mV dropout ensure uninterrupted operation; 200ms reset timeout prevents spurious resets during cranking transients. | Use Scenario: Supplies door module MCU and LIN transceivers in battery-backed always-on mode with <100μA system sleep current. IC Role / Device Role / Timing Role: Always-on LDO with HOLD-enabled self-hold and programmable PFI threshold for battery health monitoring. Use Value: 68μA quiescent current extends battery life; PFI comparator triggers orderly shutdown before deep discharge. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Controller |
Use Scenario: Powers image signal processor and serializer in front-facing camera exposed to under-hood temperatures up to +105°C. IC Role / Device Role / Timing Role: High-temp-stable 5V regulator with thermal shutdown and watchdog to detect frozen firmware during active driving. Use Value: +125°C rating and thermal hysteresis (20°C) prevent nuisance shutdowns; watchdog timeout ensures recovery from lockup. | Use Scenario: Supplies motor control MCU and gate drivers in EPS system requiring fail-operational behavior during voltage sags. IC Role / Device Role / Timing Role: Safety-critical power supervisor with dual-reset architecture (power-on + watchdog) meeting ISO 26262 ASIL-B requirements. Use Value: Push-pull RESET output drives safety monitor IC directly; 200ms timeout aligns with functional safety diagnostic intervals. |
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 5V output, but D2-coded 12.5ms reset timeout and S-option 3.3V output variant - not functionally identical to L/D4 configuration. | Targeted at systems needing faster reset recovery (e.g., infotainment boot), not extended brownout hold. | Select only if 12.5ms reset suffices and 3.3V output is required; MAX6795TPLD4+ is preferred for ECU-level 200ms reset coordination. |
| TLV70733PDPWR | Lower voltage (up to 5.5V IN), no watchdog/reset supervision, 200mA output, SOT-23-5 package - lacks automotive qualification and high-voltage capability. | Suitable for non-automotive 3.3V point-of-load, not load-dump or AEC-Q100 applications. | Not a drop-in replacement; use only in cost-sensitive, low-voltage consumer designs where supervision is handled externally. |
Compared with MAX6795TPSD2/V+ and TLV70733PDPWR, the MAX6795TPLD4+ uniquely combines 72V tolerance, AEC-Q100 qualification, integrated 200ms reset, and 280ms watchdog in a single automotive-grade device - eliminating need for discrete supervisors and enabling compact, robust ECU power architecture.
Availability
MAX6795TPLD4+ is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera ECUs, and electric power steering controllers requiring stable component supply under extreme voltage and temperature conditions.
Supply support for MAX6795TPLD4+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding industrial and automotive applications.
The MAX6795TPLD4+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators, engineered specifically for automotive subsystems requiring robustness against load-dump, cold-crank, and long-term battery drain - with integrated supervision to reduce system-level component count.
FAQ
What output voltage does the MAX6795TPLD4+ deliver?
The MAX6795TPLD4+ delivers a fixed 5V output (L option), verified by electrical characteristics tables showing VOUT = 4.850V to 5.150V at 300mA load and VIN = 8V. The "L" in the part number explicitly denotes the 5V preset configuration, and SET is internally grounded - no external resistor divider is needed for nominal operation.
Is the MAX6795TPLD4+ AEC-Q100 qualified?
Yes, the MAX6795TPLD4+ is AEC-Q100 qualified, as confirmed by the ordering information table listing MAX6795TPLD2/V+ and MAX6795TPSD2/V+ with "/V" suffix denoting automotive qualification, and by the device's –40°C to +125°C operating range, thermal shutdown at +165°C, and qualification test references in the datasheet.
How is the 200ms reset timeout implemented in the MAX6795TPLD4+?
The MAX6795TPLD4+ implements a 200ms reset timeout using the D4 code, which configures the CSRT pin for a fixed 200ms period (140–260ms min/max). This is achieved by tying CSRT to the OUT pin - no external capacitor is required. The timeout begins when VOUT rises above the 92.5% reset threshold and holds RESET low for the full duration.
Can the MAX6795TPLD4+ be used with an adjustable output voltage?
Yes, the MAX6795TPLD4+ supports adjustable output from 1.8V to 11V by disconnecting SET from GND and connecting it to an external resistive divider between OUT and GND. However, doing so disables the factory-trimmed 5V preset - the D4 reset timeout remains functional, but output accuracy depends on resistor tolerance and temperature drift.
What is the purpose of the HOLD pin on the MAX6795TPLD4+?
The HOLD pin on the MAX6795TPLD4+ enables self-holding operation: when pulled low after initial enable, it keeps the regulator ON even if ENABLE returns low - essential for ignition-switched automotive systems. HOLD is internally pulled up to OUT with 2µA, so leaving it unconnected makes ENABLE function as a standard ON/OFF switch.
MAX6795TPLD4+ 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:
- 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+ FAQ
1.How can I place an order for MAX6795TPLD4+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPLD4+ 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+ reliable?
The price and inventory of MAX6795TPLD4+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPLD4+ is usually 5 days.
3.What payment methods are accepted for MAX6795TPLD4+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPLD4+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPLD4+?
MAX6795TPLD4+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPLD4+ 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+?
For technical support, including MAX6795TPLD4+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPLD4+ requirements.
6.How does Aetrix verify that MAX6795TPLD4+ is sourced from the original manufacturer or authorized distributors?
All MAX6795TPLD4+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6795TPLD4+?
All MAX6795TPLD4+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPLD4+, 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+ part is unused and in its original packaging.
Return procedure for MAX6795TPLD4+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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