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Analog Devices Inc./Maxim Integrated MAX6795TPZD0+
- Part No.:
- MAX6795TPZD0+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPZD0+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,653
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Product details
Overview
MAX6795TPZD0+ from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail detection, and hold control), designed for automotive systems. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and supports fixed (5V/3.3V/2.5V/1.8V) or adjustable (1.8V–11V) output voltage - enabling robust power management in engine control units and body electronics.
For engineers reviewing the MAX6795TPZD0+ datasheet, MAX6795TPZD0+ pinout, MAX6795TPZD0+ application, or MAX6795TPZD0+ equivalent, key selection considerations include its AEC-Q100-qualified 20-pin TQFN package, -40°C to +125°C operation, 420mV typical dropout at 100mA, capacitor-adjustable reset/watchdog timeout, and dual enable/hold logic for ignition-controlled self-holding circuits.
Technical Context
The MAX6795TPZD0+ implements a single LDO regulator with internal pFET pass element and thermal/short-circuit/overvoltage protection. Its supervisory block integrates a precision 1.231V reference for PFI comparison, a windowed or standard watchdog timer (280ms min fixed or capacitor-adjustable), and a RESET output with programmable timeout (35μs to 200ms) triggered by OUT voltage drop below 87.5% or 92.5% of nominal.
It uses ENABLE and HOLD inputs to support automotive ignition sequencing: HOLD low enables self-hold mode after initial enable, allowing the regulator to remain active even if ENABLE returns low - eliminating external latching components. The GATEP pin drives an external p-channel MOSFET for reverse-battery protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive automotive modules |
| Output Current | 300mA max - sufficient for powering microcontrollers, CAN transceivers, and sensors in ECUs |
| Dropout Voltage | 420mV typ at 100mA - maintains regulation under high-input, low-output conditions (e.g., cold-crank) |
| Reset Threshold Accuracy | ±2.5% over -40°C to +125°C - ensures reliable brownout detection across full automotive temperature range |
| Watchdog Timeout | 280ms min fixed or capacitor-adjustable - configurable fault-detection window for MCU supervision |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood and transmission-control applications |
Pinout & Package
MAX6795TPZD0+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN-EP package (exposed pad connected to GND), rated for 2.7W power dissipation and optimized for high-ambient automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output - delivers up to 300mA; requires ≥10μF ceramic capacitor to GND for stability |
| 3 | SET | Feedback input - connect to GND for preset voltage (5V/3.3V/2.5V/1.8V) or to resistive divider for 1.8V–11V adjustment |
| 4 | PFO | Active-low open-drain power-fail output - asserts when PFI falls below 1.231V; used for early battery-low warning |
| 5 | CSWT | Watchdog timeout adjust - connect to OUT for fixed 280ms timeout or to capacitor for user-defined period |
| 6 | CSRT | Reset timeout adjust - connect to OUT for fixed timeout (D0–D4 options) or to capacitor for fine-tuning |
| 7 | GND | Analog/digital ground - tied internally to exposed pad; must be connected to PCB ground plane |
| 8 | RESET | Active-low reset output - push-pull or open-drain; holds µP in reset during brownout or watchdog fault |
| 11 | WDI | Watchdog input - requires edge transition within timeout window to prevent RESET assertion |
| 12 | HOLD | Active-low hold control - forces regulator ON after enable, enabling ignition-key latching without external parts |
| 16 | PFI | Power-fail comparator input - connect via resistor divider to monitor battery or pre-regulated rail voltage |
| 17,18 | IN | Main regulator input - bypass with 1μF ceramic capacitor to GND; accepts 5V–72V |
| 19 | GATEP | pFET gate drive - controls external p-channel MOSFET for reverse-battery protection (no diode loss) |
| 20 | ENABLE | Active-high enable - internal 0.5μA pulldown; driven high by ignition signal to start regulation |
Key Features
| Feature | Design Value |
|---|---|
| Self-holding circuit support | HOLD input enables latch-free ignition sequencing - regulator stays on after key-on pulse ends |
| Reverse-battery protection | GATEP pin drives external pFET - eliminates series diode, reducing voltage drop and heat |
| Capacitor-adjustable timing | CSRT and CSWT pins allow precise tuning of reset and watchdog timeouts without trimming resistors |
| AEC-Q100 qualified | Qualified per AEC-Q100 Rev H Grade 0 (−40°C to +125°C) - validated for safety-critical automotive use |
| Integrated power-fail detection | PFI/PFO pair provides accurate 1.231V threshold with 35μs response - enables graceful shutdown before brownout |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN transceiver, and sensor interface in gasoline/diesel ECU under wide battery voltage (6V–16V) and load-dump (up to 72V). IC Role / Device Role / Timing Role: Primary 5V/3.3V LDO with RESET supervision and watchdog - ensures deterministic boot and runtime fault recovery. Use Value: 68μA quiescent current prevents battery drain during vehicle sleep; 72V tolerance avoids external TVS clamping. | Use Scenario: Supplies power to door module MCU, LIN transceiver, and LED drivers in ambient temperatures up to +105°C. IC Role / Device Role / Timing Role: Single-output regulator with HOLD latching - enables wake-on-LIN while maintaining low IQ during standby. Use Value: Self-hold function replaces discrete latch circuit; TQFN-EP package sustains 2.7W dissipation at high ambient. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance System (ADAS) Camera ECU |
Use Scenario: Regulates power for TCU's real-time processor and solenoid drivers in under-hood location with peak ambient +125°C. IC Role / Device Role / Timing Role: High-temp LDO with thermal shutdown (165°C) and overvoltage protection - safeguards against overheating and battery surge. Use Value: Fully specified from −40°C to +125°C; 300mA output supports multiple voltage rails via local DC-DC stages. | Use Scenario: Powers image sensor, ISP, and Ethernet PHY in rear-view camera module subject to vibration and thermal cycling. IC Role / Device Role / Timing Role: Supervisory regulator with PFI monitoring - triggers orderly shutdown before battery voltage drops below safe operating level. Use Value: PFO output provides 35μs fast response to battery sag; RESET ensures clean ISP reset during power transitions. |
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 die, 3.3V fixed output, D2 (12.5ms) reset timeout, AEC-Q100 qualified | Preconfigured for 3.3V systems requiring 12.5ms reset hold time - no external resistor divider needed | Select when fixed 3.3V output and automotive qualification are mandatory; MAX6795TPZD0+ offers adjustable output and Z-coded reset threshold |
| TLV70733PDQNR | Lower voltage range (2.5V–5.5V), 200mA output, no watchdog or HOLD, SOT-23-5 package | Cost-optimized for non-automotive, low-voltage, low-current applications - lacks load-dump resilience and supervision features | Use only in benign 3.3V supply environments; MAX6795TPZD0+ is required for 5V–72V, 300mA, automotive-grade supervision |
Compared with MAX6795TPSD2/V+, MAX6795TPZD0+ provides output voltage flexibility (adjustable 1.8V–11V) and Z-coded reset threshold (2.125V nominal), while TLV70733PDQNR lacks high-voltage capability, supervision, and automotive qualification - making MAX6795TPZD0+ the sole fit for demanding automotive power-rail control.
Availability
MAX6795TPZD0+ is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and transmission control units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6795TPZD0+ 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 MAX6795TPZD0+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with integrated supervision - engineered specifically for automotive power-rail control where load-dump resilience, ultra-low IQ, and functional safety features are critical.
FAQ
What output voltage options does the MAX6795TPZD0+ support?
The MAX6795TPZD0+ supports fixed output voltages of 5V, 3.3V, 2.5V, or 1.8V (selected by internal configuration), and can be adjusted to any voltage from 1.8V to 11V using an external resistive divider connected to the SET pin. The "Z" in MAX6795TPZD0+ indicates a 2.125V nominal reset threshold for 1.8V output configurations.
How does the HOLD function work in the MAX6795TPZD0+?
The HOLD input in the MAX6795TPZD0+ enables self-holding operation: when pulled low after ENABLE is asserted, the regulator remains ON even if ENABLE returns low - mimicking ignition-key latching. Releasing HOLD (high or floating) shuts down the output. This eliminates external latch components and is ideal for automotive start-stop systems.
Is the MAX6795TPZD0+ qualified for automotive use?
Yes, the MAX6795TPZD0+ is AEC-Q100 qualified (Grade 0) and specified for continuous operation from −40°C to +125°C. It meets automotive reliability requirements including load-dump immunity (72V), reverse-battery protection via GATEP, and built-in thermal, short-circuit, and overvoltage protection - all verified per MAX6795TPZD0+ datasheet specifications.
Can the watchdog timer in the MAX6795TPZD0+ be disabled?
Yes, the watchdog timer in the MAX6795TPZD0+ can be disabled by driving the WD-DIS pin low (for MAX6795 variants with WD-DIS) or by configuring WDS0/WDS1 logic inputs appropriately. The MAX6795TPZD0+ datasheet confirms watchdog disable capability, allowing flexible use in systems where continuous MCU toggling is impractical.
What is the purpose of the GATEP pin on the MAX6795TPZD0+?
The GATEP pin on the MAX6795TPZD0+ drives the gate of an external p-channel MOSFET to provide reverse-battery protection. When battery polarity is reversed, the MOSFET blocks current flow - eliminating the need for a series Schottky diode and its associated 0.3V–0.4V forward drop and power loss, thereby improving efficiency and thermal performance in automotive applications.
MAX6795TPZD0+ 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:
- 2.313V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 35µs Typical
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPZD0+ FAQ
1.How can I place an order for MAX6795TPZD0+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPZD0+ 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 MAX6795TPZD0+ reliable?
The price and inventory of MAX6795TPZD0+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPZD0+ is usually 5 days.
3.What payment methods are accepted for MAX6795TPZD0+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPZD0+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPZD0+?
MAX6795TPZD0+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPZD0+ 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 MAX6795TPZD0+?
For technical support, including MAX6795TPZD0+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPZD0+ requirements.
6.How does Aetrix verify that MAX6795TPZD0+ is sourced from the original manufacturer or authorized distributors?
All MAX6795TPZD0+ 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 MAX6795TPZD0+ meets industry standards.
7.What is the process for return or replacement of MAX6795TPZD0+?
All MAX6795TPZD0+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPZD0+, 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 MAX6795TPZD0+ part is unused and in its original packaging.
Return procedure for MAX6795TPZD0+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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