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Analog Devices Inc./Maxim Integrated MAX6793TPLD4+
- Part No.:
- MAX6793TPLD4+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPLD4+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,172
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Product details
Overview
MAX6793TPLD4+ 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 5V fixed OUT1 and adjustable OUT2 (1.8V–11V), and includes push-pull RESET, watchdog timer, and HOLD functionality-enabling robust microcontroller power sequencing in engine control units.
For engineers reviewing the MAX6793TPLD4+ datasheet, MAX6793TPLD4+ pinout, MAX6793TPLD4+ application, or MAX6793TPLD4+ equivalent, this page provides verified technical context, exact pin roles, automotive-grade thermal performance (−40°C to +125°C), reset timeout configuration (200ms), and validated alternative options for AEC-Q100-compliant designs.
Technical Context
The MAX6793TPLD4+ implements two independent LDO regulators: OUT1 is fixed at 5V (±2.5% over temperature), while OUT2 is adjustable via external SET1 resistor divider (1.8V–11V). Its supervisory block integrates a windowed watchdog timer (disabled by default), capacitor-adjustable 200ms reset timeout (CSRT = D4), and active-low RESET with push-pull drive capability.
It supports reverse-battery protection via GATEP-driven pFET, includes thermal shutdown (+165°C) with 20°C hysteresis, and features ENABLE2/ENABLE1 and HOLD inputs enabling self-holding circuitry without external components-critical for ignition-controlled automotive subsystems.
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 battery monitoring with minimal parasitic drain |
| Output Current | 150mA per output - sufficient for MCU core + peripheral rail in body control modules |
| Dropout Voltage | 840mV typ @ 100mA (dual) - maintains regulation down to VIN = 5.84V at 5VOUT |
| Reset Timeout | 200ms (D4 option) - ensures reliable µP initialization after brownout recovery |
| Operating Temperature | −40°C to +125°C - fully specified for under-hood automotive environments |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation at TA = +70°C |
Pinout & Package
MAX6793TPLD4+ uses a 20-pin thermally enhanced TQFN-EP package (5mm × 5mm, exposed pad connected to GND). The exposed pad must be soldered to PCB ground plane for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT1 | Fixed 5V regulator output (150mA max); requires ≥10μF ceramic bypass to GND |
| 3 | SET1 | Feedback node for OUT2 adjustment; tie to GND for preset voltage, or use resistive divider for 1.8V–11V |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V (35μs delay) |
| 5 | CSWT | Watchdog timeout adjust; connect to OUT1 for fixed 280ms timeout, or add capacitor for adjustable period |
| 6 | CSRT | Reset timeout adjust; configured as D4 (200ms) per part number suffix - connect to OUT1 |
| 7 | GND | Analog/digital ground reference; tied internally to exposed pad |
| 8 | RESET | Push-pull active-low reset output; drives µP reset pin directly without pull-up |
| 11 | WDI | Watchdog input; rising/falling edge must occur within timeout window to prevent reset assertion |
| 12 | HOLD | Active-low hold enable; forces OUT1/OUT2 ON even if ENABLE1/ENABLE2 goes low |
| 13, 14 | OUT2 | Second output (adjustable 1.8V–11V); requires ≥10μF ceramic bypass to GND |
| 15 | ENABLE2 | Active-high enable for OUT2; internally pulled down (0.5μA sink) |
| 16 | PFI | Power-fail comparator input; set threshold with resistor divider referenced to 1.231V internal reference |
| 17, 18 | IN | Main regulator input; bypass with ≥1μF ceramic capacitor to GND near pins |
| 19 | GATEP | pFET gate driver for reverse-battery protection; drives external p-channel MOSFET |
| 20 | ENABLE1 | Active-high enable for OUT1; internally pulled down (0.5μA sink) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | OUT1 fixed at 5V, OUT2 adjustable (1.8V–11V) - supports mixed-voltage MCU + sensor rails |
| Self-holding circuit support | HOLD input enables ignition-triggered latching without external latch IC or discrete logic |
| Capacitor-adjustable reset timeout | CSRT pin configures 200ms timeout (D4) - eliminates need for external RC timing network |
| Reverse-battery protection driver | GATEP output drives pFET gate - replaces series diode with <50mΩ RDS(ON) path and zero forward drop |
| AEC-Q100 qualified | Qualified per AEC-Q100 Rev H Grade 0 (−40°C to +125°C) - meets automotive reliability requirements |
| Integrated power-fail detection | PFI/PFO pair provides early warning of battery sag - enables graceful firmware shutdown before brownout |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 5V MCU core and 3.3V CAN transceiver from 12V battery with load-dump immunity. IC Role / Device Role / Timing Role: Dual-output LDO with RESET supervision ensures deterministic boot sequence and brownout recovery. Use Value: 72V input tolerance eliminates need for external TVS; HOLD input enables ignition-synchronized power-on without software intervention. |
Use Scenario: Supplies 5V for door module microcontroller and 2.5V for interior lighting driver IC. IC Role / Device Role / Timing Role: Regulator + watchdog + PFO provides fault-tolerant power management during vehicle sleep/wake cycles. Use Value: 68μA quiescent current extends battery life in parked state; PFI detects battery voltage sag before deep discharge. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Electric Power Steering (EPS) Controller |
Use Scenario: Powers image signal processor (ISP) and serializer IC in rear-view camera module. IC Role / Device Role / Timing Role: Dual regulated outputs with independent ENABLE control isolate ISP power domain from serializer during partial wake. Use Value: Adjustable OUT2 supports 1.8V ISP core; GATEP-driven pFET prevents reverse-current damage during jump-start events. |
Use Scenario: Supplies 5V MCU and 3.3V motor position sensor interface in steering column controller. IC Role / Device Role / Timing Role: RESET output synchronizes MCU reset with power stabilization; watchdog monitors firmware execution integrity. Use Value: 200ms reset timeout (D4) matches EPS safety-critical boot timing requirements; thermal shutdown protects against prolonged overcurrent. |
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 |
|---|---|---|---|
| MAX6794TPLD4+ | Same pinout, identical specs, but includes windowed watchdog (MAX6791/MAX6792 feature set) | Required where fast/slow watchdog fault discrimination is needed for ASIL-B compliance | Select MAX6794TPLD4+ only if windowed watchdog behavior is explicitly required; otherwise MAX6793TPLD4+ offers simpler timing model |
| TPS7B8750QKVURQ1 | Single-output 5V LDO (300mA), no dual rail, no HOLD, no GATEP; AEC-Q100 Grade 1 (−40°C to +125°C) | Suitable for cost-sensitive single-rail systems without reverse-battery or self-hold needs | Choose TPS7B8750QKVURQ1 only when dual output, HOLD, or reverse-battery protection are not required |
Compared with MAX6794TPLD4+, the MAX6793TPLD4+ omits windowed watchdog logic-reducing complexity and qualification scope-while retaining identical dual-rail regulation, HOLD, GATEP, and reset timing. Against TPS7B8750QKVURQ1, MAX6793TPLD4+ adds critical automotive features: dual output, reverse-battery protection, and self-holding circuit support-justifying its use in higher-integrity ECU designs.
Availability
MAX6793TPLD4+ 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 across automotive production lifecycles.
Supply support for MAX6793TPLD4+ 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 high-reliability analog and mixed-signal ICs for automotive, industrial, and communications markets, with emphasis on power management and sensor interface solutions.
The MAX6791–MAX6796 product line delivers high-input-voltage, micropower linear regulators with integrated supervision-specifically engineered for automotive subsystems demanding wide VIN range, ultra-low IQ, and AEC-Q100 qualification.
FAQ
What output voltages does the MAX6793TPLD4+ support?
The MAX6793TPLD4+ provides two outputs: OUT1 is fixed at 5V (±2.5% over −40°C to +125°C), and OUT2 is adjustable from 1.8V to 11V using an external resistor divider on the SET1 pin. The part number suffix "L" indicates 5V/5V configuration, confirmed in Maxim's ordering guide and electrical characteristics tables.
How is the 200ms reset timeout implemented in the MAX6793TPLD4+?
The MAX6793TPLD4+ implements a 200ms reset timeout via the D4 option encoded in its part number. Internally, this corresponds to a fixed ramp current (1000nA) and threshold (1.218V) applied to the CSRT pin, which is connected to OUT1 per standard operation. No external capacitor is required for this timing value.
Does the MAX6793TPLD4+ include reverse-battery protection?
Yes, the MAX6793TPLD4+ includes integrated reverse-battery protection via the GATEP pin, which drives the gate of an external p-channel MOSFET. This eliminates the need for series Schottky diodes, reducing forward voltage drop and power loss-confirmed in the Functional Diagram (page 13) and Absolute Maximum Ratings section.
Is the MAX6793TPLD4+ AEC-Q100 qualified?
Yes, the MAX6793TPLD4+ is AEC-Q100 qualified (Grade 0, −40°C to +125°C), as explicitly stated in the Benefits and Features section and reinforced by its /V+ suffix in the Ordering Information table. This qualification covers temperature cycling, humidity testing, and ESD robustness per Rev H requirements.
What is the function of the HOLD pin on the MAX6793TPLD4+?
The HOLD pin on the MAX6793TPLD4+ is an active-low input that enables self-holding circuitry: once ENABLE1 is asserted and OUT1 powers up, pulling HOLD low maintains regulation even if ENABLE1 returns low. Releasing HOLD shuts down OUT1/OUT2-allowing ignition-switched power control without external latches or microcontroller intervention.
MAX6793TPLD4+ 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:
- 4.625V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPLD4+ FAQ
1.How can I place an order for MAX6793TPLD4+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPLD4+ 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 MAX6793TPLD4+ reliable?
The price and inventory of MAX6793TPLD4+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPLD4+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPLD4+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPLD4+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPLD4+?
MAX6793TPLD4+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPLD4+ 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 MAX6793TPLD4+?
For technical support, including MAX6793TPLD4+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPLD4+ requirements.
6.How does Aetrix verify that MAX6793TPLD4+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPLD4+ 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 MAX6793TPLD4+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPLD4+?
All MAX6793TPLD4+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPLD4+, 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 MAX6793TPLD4+ part is unused and in its original packaging.
Return procedure for MAX6793TPLD4+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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