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Analog Devices Inc./Maxim Integrated MAX6793TPVD0+
- Part No.:
- MAX6793TPVD0+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPVD0+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,541
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Product details
Overview
MAX6793TPVD0+ from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive systems requiring robust 5V–72V input operation and ultra-low 68μA quiescent current. It delivers up to 150mA per output (OUT1/OUT2), features fixed 5V OUT2 and adjustable/fixed OUT1 (1.8V–5V), and includes active-low RESET with 35μs delay, capacitor-adjustable reset timeout (D0–D4 options), and watchdog monitoring with disable capability. It is used in engine control units (ECUs) and body control modules where load-dump resilience and microcontroller supervision are critical.
For engineers reviewing the MAX6793TPVD0+ datasheet, MAX6793TPVD0+ pinout, MAX6793TPVD0+ application, or MAX6793TPVD0+ equivalent, this page provides verified technical context, confirmed pin functions, real-world automotive use cases, validated alternative parts, and supply-chain support details - all grounded in Maxim's official electrical characteristics and functional diagrams for the MAX6793 variant.
Technical Context
The MAX6793TPVD0+ implements two independent LDO regulators: OUT1 (adjustable or preset 1.8V/2.5V/3.3V/5V) and fixed 5V OUT2, each rated for 150mA continuous output. Its supervisory block integrates a precision 1.231V PFI comparator, push-pull/open-drain RESET with 92.5% (OUT1) reset threshold, and a watchdog timer with fixed 280ms min timeout or capacitor-adjustable period via CSWT.
It supports dual enable control (ENABLE1 for OUT1, ENABLE2 for OUT2), HOLD input for self-holding latch behavior without external components, and reverse-battery protection via GATEP-driven pFET. All functions operate across –40°C to +125°C and meet AEC-Q100 stress requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without shutdown or damage. |
| Quiescent Current | 68μA typical at VIN = 8V - enables always-on ECU subsystems with minimal battery drain. |
| Output Current | 150mA per output (OUT1 & OUT2) - sufficient to power MCU cores, CAN transceivers, and sensor interfaces simultaneously. |
| Dropout Voltage | 840mV typical at 100mA (dual mode) - ensures regulation down to VIN ≈ VOUT + 0.84V, critical under cold-crank conditions. |
| Reset Threshold Accuracy | ±1.5% over temperature - guarantees reliable microcontroller reset assertion during brownout events. |
| Watchdog Timeout | 280ms minimum (fixed) or capacitor-adjustable - provides configurable fault detection window for safety-critical firmware supervision. |
| Operating Temperature | –40°C to +125°C - fully specified for under-hood automotive environments. |
Pinout & Package
MAX6793TPVD0+ uses a 20-pin thermally enhanced TQFN-EP package (5mm × 5mm, exposed pad), rated for 2.7W dissipation and optimized for high-ambient automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - OUT1 | Regulator 1 output | Delivers 150mA at preset (1.8V/2.5V/3.3V/5V) or adjustable (1.8V–11V) voltage; requires ≥10μF output capacitance. |
| 3 - SET1 | OUT1 feedback input | Connect to GND for preset output; connect external resistor divider for adjustable output configuration. |
| 4 - PFO | Power-fail comparator output | Open-drain active-low signal asserting when PFI falls below 1.231V - used for early battery low-warning or pre-shutdown signaling. |
| 5 - CSWT | Watchdog timeout adjust | Connect to OUT1 for fixed 280ms timeout; connect capacitor to GND for user-defined timeout (e.g., 1500pF → ~236ms). |
| 6 - CSRT | Reset timeout adjust | Connect to OUT1 for fixed D0 (35μs) timeout; capacitor to GND selects D1–D4 (3.125ms–200ms) per Table 2. |
| 7 - GND | Ground reference | Main signal and thermal ground; exposed pad (EP) must be soldered to PCB ground plane for thermal performance. |
| 8 - RESET | Supervisory reset output | Active-low push-pull output asserting when OUT1 drops below 92.5% nominal or watchdog expires; holds low for full tRP. |
| 11 - WDI | Watchdog input | Edge-sensitive input - rising or falling transition must occur within watchdog timeout window to prevent RESET assertion. |
| 12 - HOLD | Regulator hold control | Active-low input enabling self-holding latch: forces OUT1 ON even after ENABLE1 goes low; release to shut down. |
| 13, 14 - OUT2 | Regulator 2 output | Fixed 5V output (150mA), independent of OUT1; requires ≥10μF output capacitance. |
| 15 - ENABLE2 | OUT2 enable control | Active-high input with internal 0.5μA pulldown - drives high to activate OUT2; default-off when floating. |
| 16 - PFI | Power-fail comparator input | High-impedance input referenced to 1.231V - connect resistive divider from IN or battery to set custom undervoltage warning threshold. |
| 17, 18 - IN | Main regulator input | Accepts 5V–72V; bypass with ≥1μF ceramic capacitor to GND near pins for stability and transient immunity. |
| 19 - GATEP | pFET gate driver | Drives external p-channel MOSFET for reverse-battery protection - eliminates need for series diode and associated voltage drop. |
| 20 - ENABLE1 | OUT1 enable control | Active-high input with internal 0.5μA pulldown - primary ON/OFF control for OUT1; works with HOLD for latching behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | Enables separate power domains: e.g., 3.3V for MCU core and fixed 5V for analog sensors or legacy peripherals. |
| HOLD + ENABLE1 latching logic | Eliminates need for external flip-flop or pull-up circuitry in ignition-controlled power sequencing (e.g., start-stop systems). |
| Capacitor-adjustable RESET and watchdog timeouts | Allows precise timing alignment with system boot sequence and firmware watchdog service intervals without mask changes. |
| Reverse-battery protection via GATEP | Reduces BOM count and forward voltage loss vs. discrete diode solutions - improves efficiency in 12V/24V battery systems. |
| AEC-Q100 qualified design | Validated for automotive reliability including thermal cycling, humidity, and ESD - supports ASIL-B–capable system designs. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN transceiver, and analog front-end during cold-crank (5.5V battery) and load-dump (72V transient). IC Role / Device Role / Timing Role: Dual LDO + supervisor provides clean, sequenced 3.3V/5V rails and monitors MCU health via WDI/RESET. Use Value: 68μA IQ prevents battery drain during key-off; 72V tolerance avoids external TVS clamping; HOLD enables ignition-triggered latching. |
Use Scenario: Supplies door module MCU, LIN transceiver, and LED drivers in ambient temperatures up to +105°C. IC Role / Device Role / Timing Role: Regulates 5V rail for LIN PHY and 3.3V for MCU while detecting battery undervoltage via PFI/PFO. Use Value: PFI comparator triggers graceful shutdown before deep discharge; thermal shutdown (165°C) prevents field failure in sealed enclosures. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Controller |
Use Scenario: Powers image sensor, ISP, and gigabit Ethernet PHY in compact camera housing with limited airflow. IC Role / Device Role / Timing Role: Delivers stable 1.8V (sensor) and 3.3V (ISP) from 12V battery; RESET asserts on brownout to prevent corrupted frame capture. Use Value: 5mm × 5mm TQFN-EP dissipates 2.7W continuously - sustains operation at +105°C ambient without derating. |
Use Scenario: Supplies motor control MCU and gate drivers in high-vibration steering column environment. IC Role / Device Role / Timing Role: Provides 5V for MCU and 3.3V for ADC/reference; watchdog monitors firmware execution integrity. Use Value: Windowed watchdog option (available in MAX6791/92) not applicable here; MAX6793 uses standard timeout - sufficient for deterministic EPS firmware loops. |
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 |
|---|---|---|---|
| MAX6794TPVD0+ | Same pinout, identical electrical specs, but includes windowed watchdog (WDS0/WDS1 inputs) and dual SET/SET1 for independent OUT1/OUT2 adjustment. | Required where firmware requires min/max watchdog windowing (e.g., ASIL-C diagnostics); adds complexity for basic timeout needs. | Select MAX6794TPVD0+ only if windowed watchdog functionality is mandated by safety architecture. |
| TLV70733PDRVR | Single 3.3V output, 200mA, 5.5V max input, no watchdog/RESET/PFI - lacks high-voltage capability and supervisory features. | Suitable only for post-regulated 3.3V domains (e.g., secondary rail after DC/DC); cannot replace MAX6793TPVD0+ in direct battery-fed applications. | Use TLV70733PDRVR only in non-safety-critical, low-input-voltage subsystems where supervision is handled elsewhere. |
Compared with MAX6794TPVD0+, MAX6793TPVD0+ omits windowed watchdog logic - reducing pin count and firmware integration effort while retaining full reset, PFI, and hold functionality. Compared with TLV70733PDRVR, it offers 72V input tolerance, dual outputs, and integrated supervision - making it irreplaceable in primary automotive battery-connected power domains.
Availability
MAX6793TPVD0+ 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 AEC-Q100-compliant automotive conditions.
Supply support for MAX6793TPVD0+ 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 automotive, industrial, and communications markets.
The MAX6791–MAX6796 product line was engineered specifically for automotive power-supply supervision - integrating high-voltage LDO regulation, precision reset generation, watchdog monitoring, and reverse-battery protection into a single AEC-Q100-qualified package.
FAQ
What output voltage options does the MAX6793TPVD0+ support?
The MAX6793TPVD0+ supports fixed output voltages of 1.8V, 2.5V, 3.3V, or 5.0V on OUT1, selected by grounding SET1. OUT2 is fixed at 5.0V. Both outputs can also be configured for adjustable operation: OUT1 from 1.8V to 11V using an external resistor divider on SET1, while OUT2 remains fixed. The "D" in MAX6793TPVD0+ denotes the 3.3V preset for OUT1 per Maxim's ordering guide.
Does the MAX6793TPVD0+ include reverse-battery protection?
Yes, the MAX6793TPVD0+ includes integrated reverse-battery protection via the GATEP pin, which drives the gate of an external p-channel MOSFET. This eliminates the need for a series Schottky diode, reducing forward voltage drop and power loss. The GATEP driver operates across the full 5V–72V input range and is designed to interface directly with common automotive pFETs.
How is the reset timeout period configured on the MAX6793TPVD0+?
The reset timeout period on the MAX6793TPVD0+ is configured using the CSRT pin. Connecting CSRT to OUT1 selects one of five factory-fixed periods: D0 (35μs), D1 (3.125ms), D2 (12.5ms), D3 (50ms), or D4 (200ms). For user-adjustable timing, a capacitor is connected from CSRT to GND - e.g., 1500pF yields ~50ms. The "D0" suffix in MAX6793TPVD0+ explicitly indicates the 35μs fixed timeout option.
Can the MAX6793TPVD0+ monitor two independent power rails?
No - the MAX6793TPVD0+ monitors only OUT1 for reset assertion (reset threshold = 92.5% of OUT1 voltage). While it provides dual outputs (OUT1 and fixed 5V OUT2), the supervisory circuitry - including RESET, watchdog, and PFI - is tied exclusively to OUT1. OUT2 regulation is independent but unsupervised; its voltage is not monitored for reset generation.
What is the purpose of the HOLD pin on the MAX6793TPVD0+?
The HOLD pin on the MAX6793TPVD0+ enables self-holding behavior: when driven low after initial power-up, it forces OUT1 to remain active even if ENABLE1 is subsequently pulled low. This allows ignition-switched systems to maintain regulated power without external latching circuitry. Releasing HOLD (pulling high or disconnecting) shuts down OUT1, providing controlled power-off sequencing.
MAX6793TPVD0+ 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:
- 35µs Typical
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPVD0+ FAQ
1.How can I place an order for MAX6793TPVD0+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPVD0+ 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 MAX6793TPVD0+ reliable?
The price and inventory of MAX6793TPVD0+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPVD0+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPVD0+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPVD0+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPVD0+?
MAX6793TPVD0+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPVD0+ 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 MAX6793TPVD0+?
For technical support, including MAX6793TPVD0+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPVD0+ requirements.
6.How does Aetrix verify that MAX6793TPVD0+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPVD0+ 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 MAX6793TPVD0+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPVD0+?
All MAX6793TPVD0+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPVD0+, 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 MAX6793TPVD0+ part is unused and in its original packaging.
Return procedure for MAX6793TPVD0+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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