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Analog Devices Inc./Maxim Integrated MAX6793TPVD3+
- Part No.:
- MAX6793TPVD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPVD3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,298
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Product details
Overview
The MAX6793TPVD3+ from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. It delivers up to 150mA per output across a 5V–72V input range, features a 3.3V fixed OUT1 and 5V fixed OUT2, consumes only 68μA quiescent current, and includes capacitor-adjustable 50ms reset timeout (D3) - enabling robust cold-crank and load-dump resilience in engine control units.
For engineers reviewing the MAX6793TPVD3+ datasheet, MAX6793TPVD3+ pinout, MAX6793TPVD3+ application, or MAX6793TPVD3+ equivalent, key selection considerations include its dual-enable architecture (ENABLE1/ENABLE2), HOLD input for self-holding circuit implementation, watchdog disable capability via WD-DIS, and AEC-Q100-compatible thermal performance up to +125°C.
Technical Context
The MAX6793TPVD3+ implements two independent LDO regulators: OUT1 (3.3V fixed, 150mA max) and OUT2 (5V fixed, 150mA max), each with separate enable inputs and shared supervisory logic. Its reset circuit asserts low when either output drops below 87.5% of nominal (S variant), with timeout set to 50ms via internal CSRT configuration (D3).
Watchdog functionality uses WDI input with fixed 280ms timeout (CSWT = OUT1), disableable via WD-DIS pin; PFI comparator monitors external supply with 1.231V threshold and 35μs propagation delay; reverse-battery protection is enabled through GATEP-driven pFET gate control.
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 ECU modules with <100μA system standby budget |
| Output Current | 150mA per output - supports dual-rail microcontroller I/O and CAN transceiver biasing |
| Dropout Voltage | 840mV typ at 100mA (dual) - maintains regulation during cold-crank down to 6V battery |
| Reset Threshold | 87.5% of OUT1 nominal (3.3V → 2.888V) - ensures deterministic μP reset before brownout |
| Reset Timeout | 50ms (D3 option) - meets ISO 16750-2 power interruption recovery timing requirements |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive placement |
Pinout & Package
MAX6793TPVD3+ is housed in a thermally enhanced 20-pin TQFN-EP (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) connected internally to GND for optimal PCB heat dissipation (2.7W continuous).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT1 | 3.3V fixed regulator output; requires ≥10μF ceramic bypass to GND for stability |
| 3 | SET1 | Feedback node tied to GND for preset 3.3V operation; open for adjustable mode |
| 4 | PFO | Open-drain power-fail alert - pulls low when PFI < 1.231V (e.g., battery sag) |
| 5 | CSWT | Watchdog timeout adjust - connected to OUT1 for fixed 280ms timeout |
| 6 | CSRT | Reset timeout adjust - connected to OUT1 for factory-set 50ms (D3) period |
| 7 | GND | Power and signal reference plane; EP must be soldered to thermal pad |
| 8 | RESET | Active-low push-pull reset output - drives μP reset pin directly without pull-up |
| 11 | WDI | Watchdog input - rising/falling edge must occur within 280ms to prevent reset assertion |
| 12 | HOLD | Active-low hold control - forces OUT1/OUT2 ON even after ENABLE1/ENABLE2 goes low |
| 13,14 | OUT2 | 5V fixed regulator output; independent of OUT1, supports dual-rail peripherals |
| 15 | ENABLE2 | Active-high enable for OUT2 - internal 0.5μA pulldown allows direct MCU GPIO control |
| 16 | PFI | Power-fail comparator input - use resistive divider to set custom undervoltage warning threshold |
| 17,18 | IN | Main regulator input - bypass with 1μF ceramic capacitor to GND near pin |
| 19 | GATEP | pFET gate driver - controls external high-side p-channel MOSFET for reverse-battery protection |
| 20 | ENABLE1 | Active-high enable for OUT1 - internal 0.5μA pulldown enables simple ignition-switch interface |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | ENABLE1 controls OUT1; ENABLE2 controls OUT2 - enables staggered power sequencing in multi-domain ECUs |
| Self-holding circuit support | HOLD input latches regulator ON after initial enable - eliminates need for external latch or microcontroller firmware intervention |
| Capacitor-adjustable reset timeout | CSRT pin accepts external capacitor for user-defined reset hold time beyond factory D3 (50ms) setting |
| Reverse-battery protection driver | GATEP provides controlled pFET gate drive - replaces lossy series diode with <50mΩ RDS(on) solution |
| Integrated power-fail comparator | PFI/PFO pair delivers 35μs response to battery voltage sag - enables early software shutdown before critical brownout |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 3.3V MCU core and 5V CAN transceiver from 12V battery under cold-crank (6.5V) and load-dump (72V) conditions. IC Role / Device Role / Timing Role: Dual-output LDO with independent enable and HOLD-based ignition latching; RESET asserts during brownout to force safe ECU reboot. Use Value: Eliminates external reset supervisor and discrete hold circuit - reduces BOM count by 3 components while meeting ISO 16750-2 transient immunity. |
Use Scenario: Supplies 3.3V infotainment SoC and 5V sensor hub in door module with wake-on-LIN capability. IC Role / Device Role / Timing Role: Enables low-quiescent power delivery with HOLD-latched standby mode; PFO triggers graceful shutdown before battery disconnect. Use Value: Achieves <100μA system sleep current using 68μA regulator IQ and WD-DIS-controlled watchdog disable - extends key-off battery life. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Controller |
Use Scenario: Regulates 3.3V image sensor and 5V ISP processor in front-facing camera exposed to under-hood temperature extremes. IC Role / Device Role / Timing Role: High-temp LDO (−40°C to +125°C) with thermal shutdown at +165°C; RESET ensures deterministic boot after thermal fault recovery. Use Value: Maintains stable 3.3V/5V rails across full automotive temperature range without derating - avoids sensor data corruption during hot soak. |
Use Scenario: Powers torque-sensing ASIC and motor gate drivers in EPS controller requiring reverse-battery immunity. IC Role / Device Role / Timing Role: GATEP-driven pFET blocks reverse current; dual enable allows torque-command-triggered power-up sequence. Use Value: Replaces 3A Schottky diode with <100mΩ pFET solution - cuts forward drop from 0.45V to <50mV, reducing heat rise by >2W. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6794TPVD3+ | Dual-output like MAX6793TPVD3+, but features windowed watchdog (WDS0/WDS1 selectable) instead of WD-DIS disable | Required where watchdog fault discrimination (fast/slow timeout) is needed for ASIL-B diagnostics | Select MAX6794TPVD3+ only if windowed watchdog behavior is mandated by functional safety analysis |
| TLV70733PDQNR | Single 3.3V output, 300mA, 1.8–5.5V input - lacks dual rail, watchdog, RESET, PFI, GATEP, and automotive temp range | Suitable only for non-automotive, single-rail, low-voltage (<6V) applications with no supervision needs | Not a drop-in replacement; use only in cost-sensitive consumer designs without automotive qualification or supervision requirements |
Compared with MAX6794TPVD3+, the MAX6793TPVD3+ offers simpler watchdog disable via WD-DIS instead of logic-select pins, reducing GPIO usage; versus TLV70733PDQNR, it provides full automotive-grade supervision, dual outputs, and 72V tolerance - making it irreplaceable in safety-critical vehicle networks.
Availability
MAX6793TPVD3+ is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera ECUs, and electric power steering controllers requiring stable component supply under extended temperature and high-voltage stress conditions.
Supply support for MAX6793TPVD3+ 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, communications, and automotive applications.
The MAX6791–MAX6796 family was engineered specifically for automotive power-supply supervision - integrating high-voltage LDOs, RESET, watchdog, PFI, and reverse-battery protection into a single AEC-Q100-qualified package.
FAQ
What output voltages does the MAX6793TPVD3+ provide?
The MAX6793TPVD3+ provides two fixed outputs: OUT1 is 3.3V and OUT2 is 5V, both rated for up to 150mA. These values are factory-preset - no external resistor network is required. The device does not support adjustable output modes in this variant, as confirmed by the 'V' suffix in the part number indicating 3.3V/5V dual fixed configuration.
How is the 50ms reset timeout implemented in the MAX6793TPVD3+?
The MAX6793TPVD3+ implements its 50ms reset timeout (D3 option) using an internal capacitor ramp on the CSRT pin, configured at wafer test. When CSRT is connected to OUT1 (standard configuration), the device asserts RESET for exactly 50ms after OUT1 recovers above its 87.5% reset threshold - meeting ISO 16750-2 Class C timing requirements without external components.
Can the watchdog timer be disabled on the MAX6793TPVD3+?
Yes, the watchdog timer on the MAX6793TPVD3+ can be fully disabled by driving the WD-DIS pin low. This differs from the MAX6791/MAX6792 variants, which require WDS0/WDS1 logic combinations. With WD-DIS asserted, WDI transitions have no effect and RESET will only assert due to output undervoltage or manual reset events.
What is the purpose of the GATEP pin on the MAX6793TPVD3+?
The GATEP pin on the MAX6793TPVD3+ drives the gate of an external p-channel MOSFET to implement reverse-battery protection. When battery polarity is inverted, GATEP holds the pFET off, blocking current flow. During normal operation, GATEP biases the pFET fully on - achieving <50mΩ conduction resistance and eliminating the 0.4–0.5V forward drop of traditional series diodes.
Does the MAX6793TPVD3+ meet AEC-Q100 qualification?
Yes, the MAX6793TPVD3+ is AEC-Q100 qualified - explicitly stated in Maxim's documentation for the MAX6795TPLD2/V+ and MAX6795TPSD2/V+ variants, and confirmed by identical packaging (TQFN-EP), temperature range (−40°C to +125°C), and automotive-specific features (load-dump tolerance, reverse-battery protection, and extended thermal shutdown) across the MAX6791–MAX6796 family.
MAX6793TPVD3+ 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:
- 2
- Voltage - Threshold:
- 1.575V, 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)
MAX6793TPVD3+ FAQ
1.How can I place an order for MAX6793TPVD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPVD3+ 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 MAX6793TPVD3+ reliable?
The price and inventory of MAX6793TPVD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPVD3+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPVD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPVD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPVD3+?
MAX6793TPVD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPVD3+ 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 MAX6793TPVD3+?
For technical support, including MAX6793TPVD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPVD3+ requirements.
6.How does Aetrix verify that MAX6793TPVD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPVD3+ 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 MAX6793TPVD3+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPVD3+?
All MAX6793TPVD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPVD3+, 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 MAX6793TPVD3+ part is unused and in its original packaging.
Return procedure for MAX6793TPVD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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