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Analog Devices Inc./Maxim Integrated MAX6795TPWD2+T
- Part No.:
- MAX6795TPWD2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPWD2+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,211
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Product details
Overview
MAX6795TPWD2+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 5V fixed output with 87.5% reset threshold and 12.5ms reset timeout - ideal for engine control units under load-dump conditions.
For engineers reviewing the MAX6795TPWD2+T datasheet, MAX6795TPWD2+T pinout, MAX6795TPWD2+T application, or MAX6795TPWD2+T equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, watchdog disable capability, HOLD/ENABLE self-holding logic, thermal shutdown at +165°C, and compatibility with reverse-battery protection via external pFET.
Technical Context
The MAX6795TPWD2+T implements a single LDO regulator with adjustable or fixed output (5V preset), using internal feedback referenced to 1.231V and SET pin voltage thresholds (124mV rising / 62mV falling) for precise output programming. Its RESET output asserts low when OUT drops below 87.5% of nominal (4.375V for 5V output) and remains low for 12.5ms after recovery.
It integrates a fixed 280ms (min) watchdog timeout with WD-DIS pin disable control, open-drain PFO comparator tied to 1.231V PFI threshold, and HOLD input that latches regulator ON independently of ENABLE - enabling ignition-key-triggered self-holding without external components.
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 - supports microcontroller core + peripheral rail in compact ECUs. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive applications. |
| Reset Threshold | 87.5% of VOUT (4.375V at 5V output) - ensures reliable brownout detection before MCU malfunction. |
| Reset Timeout | 12.5ms (D2 option) - provides sufficient hold time for deterministic processor reset sequencing. |
| Watchdog Timeout | 280ms minimum (fixed) - balances fault detection latency and false-trigger immunity in safety-critical systems. |
| Thermal Shutdown | +165°C with 20°C hysteresis - prevents permanent damage during sustained high-ambient operation. |
Pinout & Package
MAX6795TPWD2+T is housed in a thermally enhanced 5mm × 5mm, 20-pin TQFN-EP package (exposed pad connected to GND), rated for 2.7W power dissipation and specified from –40°C to +125°C.
| 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; 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. |
| 5 | CSWT | Watchdog timeout adjust; tied to OUT for fixed 280ms timeout, or capacitor-to-GND for adjustable period. |
| 6 | CSRT | Reset timeout adjust; tied to OUT for fixed 12.5ms (D2), or capacitor-to-GND for other durations. |
| 7 | GND | Power and signal reference; must connect exposed pad (EP) to PCB ground plane for thermal performance. |
| 8 | RESET | Active-low reset output; push-pull or open-drain variant - drives MCU reset pin directly. |
| 11 | WDI | Watchdog input; requires edge transition within timeout window to prevent reset assertion. |
| 12 | HOLD | Active-low latch enable; forces regulator ON even if ENABLE goes low - enables self-holding circuits. |
| 16 | PFI | Power-fail comparator input; accepts resistive divider to set custom undervoltage detection threshold. |
| 17, 18 | IN | Main regulator input; bypassed with 1μF capacitor to GND for noise immunity and transient response. |
| 19 | GATEP | pFET gate drive; controls external high-side MOSFET for reverse-battery protection (no diode drop). |
| 20 | ENABLE | Active-high regulator enable; internally pulled down (0.5μA sink) - compatible with open-collector MCU outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby in always-on automotive modules. |
| Integrated reverse-battery protection driver | GATEP pin directly drives p-channel MOSFET - eliminates series diode, reducing dropout and heat. |
| Self-holding circuit support | HOLD pin latches regulator ON after ENABLE pulse - removes need for external latch or microcontroller polling. |
| Configurable reset and watchdog timing | CSRT/CSWT pins allow fixed or capacitor-adjustable timeouts - simplifies design reuse across platforms. |
| AEC-Q100 qualified | Qualified per Grade 0 (–40°C to +125°C) - meets automotive reliability and stress-test requirements. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU and CAN transceiver in under-hood ECU exposed to 72V load-dump transients and ambient temperatures up to +125°C. IC Role / Device Role / Timing Role: Primary 5V regulator with integrated reset supervision and watchdog monitoring of MCU firmware execution. Use Value: 68μA quiescent current extends battery life during vehicle sleep mode; 72V input range eliminates need for front-end TVS clamping. |
Use Scenario: Supplies power to door module microcontroller and LIN transceiver in door latch assembly. IC Role / Device Role / Timing Role: Single-rail 5V regulator with HOLD-enabled self-latching triggered by door-open signal. Use Value: HOLD function maintains power after brief ignition-key pulse - avoids wake-up delays and enables fast response to door events. |
| Advanced Driver Assistance System (ADAS) Camera | Telematics Control Unit (TCU) |
Use Scenario: Powers image sensor and ISP in rear-view camera exposed to wide temperature swings and battery voltage fluctuations. IC Role / Device Role / Timing Role: Stable 5V supply with PFO-driven early power-fail warning to trigger graceful image buffer save before shutdown. Use Value: 1.231V precision PFI threshold enables accurate battery monitoring; 35μs PFI→PFO delay ensures timely warning. |
Use Scenario: Provides regulated 5V rail for cellular modem, GNSS receiver, and eSIM in vehicle telematics gateway. IC Role / Device Role / Timing Role: Supervised power source with watchdog monitoring of modem firmware health and reset coordination. Use Value: WD-DIS pin allows software-controlled watchdog disable during firmware updates - preventing spurious resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage linear regulator with supervisory functions applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPLD2/V+ | AEC-Q100 qualified (Grade 0), same pinout and electrical specs; /V+ suffix denotes automotive qualification. | Required for production automotive programs requiring full AEC-Q100 documentation and traceability. | Select MAX6795TPLD2/V+ for certified automotive designs; MAX6795TPWD2+T is industrial-grade with identical functionality. |
| TLV70733PDQNR | Lower input range (2.5V–5.5V), no watchdog/reset, 200mA output, SOT-23-5 package - lacks supervision and high-voltage capability. | Suitable only for post-regulated 3.3V rails in non-automotive, low-voltage systems. | Not a functional substitute; use only where input voltage ≤5.5V and supervision is handled externally. |
Compared with MAX6795TPLD2/V+, the MAX6795TPWD2+T offers identical regulation and supervision performance but lacks formal AEC-Q100 certification documentation - making it suitable for prototyping or industrial applications. The TLV70733PDQNR is not a true alternative due to its narrow 2.5V–5.5V input range and absence of reset/watchdog features.
Availability
MAX6795TPWD2+T is available at Aetrix Electronics and suitable for automotive engine control, body electronics, and ADAS camera modules requiring stable component supply across extended temperature and high-input-voltage conditions.
Supply support for MAX6795TPWD2+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 MAX6795TPWD2+T belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with integrated supervision - engineered specifically for automotive subsystems needing robust, low-quiescent-power power management under harsh electrical conditions.
FAQ
What output voltage does MAX6795TPWD2+T deliver?
The MAX6795TPWD2+T delivers a fixed 5V output. Its ordering code "WD2" indicates the W preset (5V output), D reset threshold (87.5% of VOUT = 4.375V), and 2 reset timeout option (12.5ms). The device also supports adjustable output from 1.8V to 11V via the SET pin and external resistor divider - but the MAX6795TPWD2+T variant is factory-configured for 5V.
Is MAX6795TPWD2+T AEC-Q100 qualified?
No, MAX6795TPWD2+T is not AEC-Q100 qualified. It is an industrial-grade variant. For automotive production, use the AEC-Q100-qualified MAX6795TPLD2/V+ or MAX6795TPSD2/V+, which share identical electrical specifications and pinout but include full qualification documentation and traceability required by Tier 1 suppliers.
How does the HOLD function work on MAX6795TPWD2+T?
The HOLD pin on MAX6795TPWD2+T is an active-low input that latches the regulator ON after initial enable. When ENABLE is pulsed high and then released, asserting HOLD low maintains OUT regulation - enabling self-holding circuits without external components. Releasing HOLD (pulling high or leaving open) shuts down the output, even if ENABLE remains high.
Can MAX6795TPWD2+T drive a p-channel MOSFET for reverse-battery protection?
Yes, MAX6795TPWD2+T includes a dedicated GATEP pin that drives the gate of an external p-channel MOSFET. This provides active reverse-battery protection with near-zero forward voltage drop - eliminating the power loss and heat generation of traditional series diodes. The GATEP output is rated for ±100µA sink/source and interfaces directly with common automotive pFETs.
What is the purpose of the CSRT and CSWT pins on MAX6795TPWD2+T?
CSRT (Reset Timeout Adjust) and CSWT (Watchdog Timeout Adjust) pins on MAX6795TPWD2+T allow configuration of timing functions. Tying CSRT to OUT selects the factory-programmed 12.5ms reset timeout (D2); connecting a capacitor to GND enables user-defined durations. Similarly, CSWT tied to OUT enables fixed 280ms watchdog timeout, while a capacitor sets adjustable periods - providing flexibility without changing firmware.
MAX6795TPWD2+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:
- 1.665V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPWD2+T FAQ
1.How can I place an order for MAX6795TPWD2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPWD2+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 MAX6795TPWD2+T reliable?
The price and inventory of MAX6795TPWD2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPWD2+T is usually 5 days.
3.What payment methods are accepted for MAX6795TPWD2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPWD2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPWD2+T?
MAX6795TPWD2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPWD2+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 MAX6795TPWD2+T?
For technical support, including MAX6795TPWD2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPWD2+T requirements.
6.How does Aetrix verify that MAX6795TPWD2+T is sourced from the original manufacturer or authorized distributors?
All MAX6795TPWD2+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 MAX6795TPWD2+T meets industry standards.
7.What is the process for return or replacement of MAX6795TPWD2+T?
All MAX6795TPWD2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPWD2+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 MAX6795TPWD2+T part is unused and in its original packaging.
Return procedure for MAX6795TPWD2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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