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Analog Devices Inc./Maxim Integrated MAX6795TPTD3+T
- Part No.:
- MAX6795TPTD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPTD3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,241
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Product details
Overview
MAX6795TPTD3+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 at 5V (±2.5% over -40°C to +125°C), operates from 5V to 72V input, consumes only 68μA quiescent current, and features a capacitor-adjustable 50ms reset timeout - ideal for engine control units under load-dump conditions.
For engineers reviewing the MAX6795TPTD3+T datasheet, MAX6795TPTD3+T pinout, MAX6795TPTD3+T application, or MAX6795TPTD3+T equivalent, key selection criteria include its AEC-Q100-qualified 5mm × 5mm TQFN package, 420mV typical dropout at 100mA, open-drain/push-pull RESET output, watchdog disable capability, and HOLD-enabled self-holding circuit implementation without external components.
Technical Context
The MAX6795TPTD3+T implements a single high-side pFET-based LDO regulator with internal feedback control referenced to a precision 1.231V bandgap. Its supervisory block integrates a fixed-threshold (92.5% of VOUT) RESET generator with capacitor-adjustable timeout (CSRT), a 280ms min watchdog timer (CSWT), and dual-mode logic inputs (ENABLE and HOLD) enabling ignition-controlled latching behavior.
It supports reverse-battery protection via GATEP-driven external p-MOSFET, includes thermal shutdown (+165°C), short-circuit current limiting (480mA), and output overvoltage protection (1.05×VOUT). All specifications are fully characterized across -40°C to +125°C and qualified per AEC-Q100 Grade 0.
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 for MCU core rails and CAN transceivers in body electronics. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive applications like telematics. |
| Dropout Voltage | 420mV @ 100mA - maintains regulation down to VIN = 5.42V when VOUT = 5V. |
| Reset Timeout | 50ms (D3 option) - ensures reliable microcontroller initialization after brownout recovery. |
| Operating Temp | -40°C to +125°C - meets full automotive under-hood temperature requirements. |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation at TA = +70°C. |
Pinout & Package
MAX6795TPTD3+T is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN package with exposed pad (EP) connected internally to GND. The EP must be soldered to PCB ground plane for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (5V preset); 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 50ms (D3), or capacitor-to-GND for custom delay. |
| 7 | GND | Analog/digital ground reference; connects to EP for low-impedance thermal path. |
| 8 | RESET | Active-low reset output (open-drain or push-pull); asserts during VOUT undervoltage or watchdog fault. |
| 11 | WDI | Watchdog input; requires edge transition within timeout window to prevent reset assertion. |
| 12 | HOLD | Active-low hold enable; forces regulator ON even after ENABLE goes low - enables self-holding ignition circuits. |
| 16 | PFI | Power-fail comparator input; configured with resistor divider to set custom undervoltage threshold. |
| 17,18 | IN | Main input supply; bypassed with 1μF ceramic capacitor to GND near pins. |
| 19 | GATEP | p-MOSFET gate driver; drives external high-side FET for reverse-battery protection. |
| 20 | ENABLE | Active-high enable; internally pulled down (0.5μA), compatible with 3.3V/5V logic. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby in always-on automotive modules. |
| Integrated HOLD function | Eliminates need for external latch circuitry in ignition-switched systems. |
| Capacitor-adjustable reset timeout | CSRT pin allows precise tuning of reset duration (e.g., 50ms for MCU boot sequencing). |
| Reverse-battery protection drive | GATEP output controls external p-FET, removing series diode losses and heat. |
| AEC-Q100 qualification | Qualified per Grade 0 (-40°C to +125°C), supporting safety-critical automotive domains. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powers 32-bit MCU and sensor interface ICs in gasoline/diesel ECUs exposed to 72V load-dump events. IC Role / Device Role / Timing Role: Primary 5V LDO regulator with RESET supervision and watchdog monitoring of main processor. Use Value: 72V input range and thermal shutdown ensure uninterrupted operation during cranking and load dump; HOLD enables ignition-controlled latching without relay. | Use Scenario: Supplies vision processor and radar SoC in forward collision warning modules requiring high reliability. IC Role / Device Role / Timing Role: Single-point power source with power-fail detection (PFI/PFO) and programmable reset timing for orderly shutdown. Use Value: 300mA output sustains peak SoC loads; PFO provides early warning before brownout, allowing safe image buffer save. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) |
Use Scenario: Powers LTE modem, GNSS receiver, and CAN controller in always-connected vehicle hotspots. IC Role / Device Role / Timing Role: Always-on regulator with ultra-low IQ and watchdog supervision for remote firmware updates. Use Value: 68μA quiescent current extends battery life during parking mode; WD-DIS allows safe firmware update windows without reset interference. | Use Scenario: Regulates power for door module microcontrollers and LIN transceivers in distributed body networks. IC Role / Device Role / Timing Role: Local 5V supply with ENABLE-controlled startup and RESET coordination across multiple nodes. Use Value: Dual enable/HOLD logic supports wake-up via CAN/LIN while maintaining local power state; 5mm × 5mm footprint saves PCB area. |
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 |
|---|---|---|---|
| MAX6795TPLD2/V+ | Same 5V preset, but fixed 12.5ms reset timeout (D2) and AEC-Q100 certified (/V+ suffix). | Targeted for production automotive programs requiring formal qualification evidence. | Select when AEC-Q100 documentation and traceability are mandatory; not suitable if 50ms reset is required. |
| TPS7B8750QKVURQ1 | TI's 5V, 500mA AEC-Q100 LDO with 35μA IQ, but no integrated watchdog or HOLD function. | Lacks supervisory features - requires external reset IC and latch circuitry for equivalent functionality. | Choose only if higher current and lower IQ are critical, and system-level supervision is handled separately. |
Compared with MAX6795TPTD3+T, MAX6795TPLD2/V+ offers formal automotive qualification but fixed reset timing, while TPS7B8750QKVURQ1 trades away integrated supervision for higher current and lower IQ - making MAX6795TPTD3+T optimal for compact, feature-integrated automotive LDO designs.
Availability
MAX6795TPTD3+T is available at Aetrix Electronics and suitable for automotive engine control, ADAS domain controllers, telematics units, and body electronics requiring stable component supply across extended temperature and high-reliability environments.
Supply support for MAX6795TPTD3+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 automotive, industrial, and communications markets.
The MAX6795TPTD3+T belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with supervisory functions, engineered specifically for automotive power domains where wide input range, low IQ, and integrated reset/watchdog are essential.
FAQ
What output voltage does MAX6795TPTD3+T deliver?
MAX6795TPTD3+T delivers a factory-preset 5V output with ±2.5% tolerance over -40°C to +125°C. This is confirmed by the "D" in the ordering code (MAX6795TPTD3+T), where "D" denotes the 5V option per Maxim's selector guide. The device also supports adjustable output (1.8V–11V) via external resistor divider on the SET pin, but the D3 variant is fixed at 5V.
Does MAX6795TPTD3+T support reverse-battery protection?
Yes, MAX6795TPTD3+T supports reverse-battery protection through its GATEP pin, which drives the gate of an external p-channel MOSFET. When reverse polarity is applied, the IC disables the FET to block current flow. This eliminates the need for lossy series diodes and is explicitly validated in the functional diagram and Absolute Maximum Ratings section of the datasheet.
What is the meaning of "D3" in MAX6795TPTD3+T?
The "D3" in MAX6795TPTD3+T specifies two factory-configured parameters: "D" indicates the preset output voltage is 5V, and "3" denotes the reset timeout period is 50ms (per Table 2 in the datasheet). This coding is consistent across the MAX6791–MAX6796 family and defines the exact supervisory behavior of this specific tape-and-reel variant.
Is MAX6795TPTD3+T AEC-Q100 qualified?
No, MAX6795TPTD3+T is not AEC-Q100 qualified. Its ordering code lacks the "/V+" suffix (e.g., MAX6795TPLD2/V+), which denotes formal AEC-Q100 Grade 0 qualification. While MAX6795TPTD3+T operates across -40°C to +125°C and includes automotive-grade protections (thermal shutdown, reverse-battery drive), it is intended for non-safety-critical or pre-qualification design-in stages.
Can the watchdog timer in MAX6795TPTD3+T be disabled?
Yes, the watchdog timer in MAX6795TPTD3+T can be disabled using the WD-DIS pin (Pin 10). Driving WD-DIS low disables the watchdog function entirely, preventing any WDI-triggered reset assertions. This is documented in the Pin Description table and Functional Diagram (MAX6795/MAX6796 page 14), and is distinct from the WDS0/WDS1 configuration used in MAX6791/MAX6792.
MAX6795TPTD3+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:
- 3.053V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 35ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPTD3+T FAQ
1.How can I place an order for MAX6795TPTD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPTD3+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 MAX6795TPTD3+T reliable?
The price and inventory of MAX6795TPTD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPTD3+T is usually 5 days.
3.What payment methods are accepted for MAX6795TPTD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPTD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPTD3+T?
MAX6795TPTD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPTD3+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 MAX6795TPTD3+T?
For technical support, including MAX6795TPTD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPTD3+T requirements.
6.How does Aetrix verify that MAX6795TPTD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6795TPTD3+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 MAX6795TPTD3+T meets industry standards.
7.What is the process for return or replacement of MAX6795TPTD3+T?
All MAX6795TPTD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPTD3+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 MAX6795TPTD3+T part is unused and in its original packaging.
Return procedure for MAX6795TPTD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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