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Analog Devices Inc./Maxim Integrated MAX6793TPZD4+T
- Part No.:
- MAX6793TPZD4+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPZD4+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,850
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Product details
Overview
MAX6793TPZD4+T from Maxim Integrated is a dual-output, ultra-low-quiescent-current linear regulator for automotive systems, delivering up to 150mA per output with 5V/3.3V preset options, 68μA supply current, and 5V–72V input range. It integrates reset supervision, watchdog timer, and hold functionality for engine control units and body electronics.
For engineers reviewing the MAX6793TPZD4+T datasheet, MAX6793TPZD4+T pinout, MAX6793TPZD4+T application, or MAX6793TPZD4+T equivalent, key selection criteria include dual 150mA outputs, fixed 5V + adjustable 3.3V configuration, D4 reset timeout (200ms), and AEC-Q100-compliant TQFN-20 package operation from –40°C to +125°C.
Technical Context
The MAX6793TPZD4+T implements two independent LDO regulators: OUT1 (adjustable or preset 3.3V) and fixed 5V OUT2, each with dedicated enable inputs (ENABLE1/ENABLE2) and shared HOLD logic. Its supervisory block features an open-drain RESET output with 87.5% reset threshold relative to OUT1 and capacitor-adjustable or internally fixed 200ms timeout (D4 code).
It includes a watchdog timer with fixed 280ms timeout (CSWT = OUT1), disable via WD-DIS pin, and power-fail comparator (PFI/PFO) referenced to 1.231V. Thermal shutdown triggers at +165°C with 20°C hysteresis, and reverse-battery protection is enabled via GATEP-driven pFET.
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 standby draw |
| Output Current | 150mA per output - supports dual-rail microcontroller I/O and CAN transceiver biasing |
| Dropout Voltage | 840mV typ @ 100mA (dual) - maintains regulation down to VIN = VOUT + 0.84V |
| Reset Timeout | 200ms (D4 code) - ensures reliable μP initialization after brownout recovery |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive placement |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation |
Pinout & Package
MAX6793TPZD4+T uses a 20-pin thermally enhanced TQFN package (5mm × 5mm, exposed pad). The exposed pad (EP) must be soldered to PCB ground plane for thermal performance and electrical reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Regulator 1 Output | Preset 3.3V output (per Z code); requires ≥10μF ceramic capacitor to GND |
| SET1 | Feedback Input | Connected to GND for 3.3V preset; used with resistor divider for adjustable output |
| PFO | Power-Fail Comparator Output | Open-drain active-low signal asserting when PFI falls below 1.231V |
| CSRT | Reset Timeout Adjust | Connected to OUT1 for fixed 200ms timeout (D4); capacitor to GND for adjustment |
| GND | Ground Reference | Primary return path for all analog/digital circuits and thermal pad connection |
| RESET | Supervisory Reset Output | Active-low open-drain output with 87.5% reset threshold on OUT1 |
| WDI | Watchdog Input | Edge-sensitive input; reset asserted if no transition occurs within 280ms |
| HOLD | Regulator Hold Control | Active-low; forces OUT1/OUT2 ON even after ENABLE1/ENABLE2 goes low |
| OUT2 | Regulator 2 Output | Fixed 5V output; supplies MCU core or interface ICs requiring stable 5V rail |
| ENABLE2 | Enable Input 2 | Active-high control for OUT2; internal 0.5μA pulldown allows direct MCU GPIO drive |
| PFI | Power-Fail Input | Resistive-divider input referenced to 1.231V; enables battery voltage monitoring |
| IN | Main Input Supply | Accepts 5V–72V; bypassed with 1μF capacitor to GND for stability |
| GATEP | pFET Gate Driver | Drives external p-channel MOSFET for reverse-battery protection |
| ENABLE1 | Enable Input 1 | Active-high control for OUT1; internal 0.5μA pulldown enables direct MCU control |
| WD-DIS | Watchdog Disable | Active-low; disables watchdog function when pulled low |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | Enables simultaneous 3.3V (OUT1) and 5V (OUT2) rails with separate enable control |
| Self-holding circuit support | HOLD pin eliminates need for external latch components in ignition-switched applications |
| Reverse-battery protection driver | GATEP output drives pFET to replace lossy series diode, reducing voltage drop and heat |
| Integrated power-fail detection | PFI/PFO comparator provides early warning of battery sag before system reset |
| Thermal & overcurrent protection | Shuts down at +165°C with 20°C hysteresis; limits short-circuit current to 240mA |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN transceivers, and sensor interfaces in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Dual-output LDO providing isolated 3.3V (MCU I/O) and 5V (analog sensors/CAN) rails with synchronized reset supervision. Use Value: 68μA quiescent current prevents battery drain during vehicle sleep mode; 72V tolerance survives load-dump events. | Use Scenario: Supplies door module microcontrollers, LIN transceivers, and LED drivers in centralized body electronics. IC Role / Device Role / Timing Role: Regulator with HOLD function maintains power during ignition cycling; watchdog monitors firmware execution. Use Value: HOLD pin enables self-latching without external components; WD-DIS allows safe watchdog disable during firmware updates. |
| Advanced Driver Assistance Systems (ADAS) | Electric Power Steering (EPS) |
Use Scenario: Powers vision processor, radar interface, and safety-monitoring MCU in front-camera or surround-view systems. IC Role / Device Role / Timing Role: Supervisory regulator delivering clean 3.3V/5V with reset assertion during voltage sags caused by high-current actuator switching. Use Value: 200ms reset timeout (D4) ensures deterministic restart after transient brownouts; –40°C to +125°C rating supports under-hood mounting. | Use Scenario: Supplies motor controller MCU, torque sensor interface, and H-bridge gate drivers in steer-by-wire systems. IC Role / Device Role / Timing Role: Dual LDO with reverse-battery protection (GATEP) replaces discrete pFET+driver, reducing BOM count and board space. Use Value: Integrated GATEP driver eliminates external level-shifter; 150mA per rail supports high-speed SPI and PWM peripherals. |
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 |
|---|---|---|---|
| MAX6794TPZD4+T | Same pinout, identical specs, but includes windowed watchdog (WDS0/WDS1) instead of WD-DIS | Required where min/max watchdog fault detection is needed (e.g., ASIL-B safety monitoring) | Select MAX6794TPZD4+T only if windowed watchdog functionality is required; otherwise MAX6793TPZD4+T offers simpler WD-DIS control |
| TLE42744GV50 | Single 5V output (no dual rail), 150mA, 45μA IQ, integrated watchdog, but no adjustable output or HOLD function | Suitable for 5V-only systems without 3.3V rail or self-holding requirements | Choose TLE42744GV50 for cost-sensitive 5V-only designs; MAX6793TPZD4+T is required for dual-rail + HOLD + adjustable output |
Compared with MAX6794TPZD4+T and TLE42744GV50, MAX6793TPZD4+T uniquely combines dual 150mA outputs, HOLD-based latching, WD-DIS simplicity, and 3.3V/5V preset configuration-making it optimal for ignition-controlled dual-rail ECUs where windowed watchdog is unnecessary.
Availability
MAX6793TPZD4+T is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS domain controllers requiring stable component supply across extended temperature and high-reliability environments.
Supply support for MAX6793TPZD4+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 MAX6791–MAX6796 family targets high-voltage automotive power management, delivering micropower dual/single LDOs with integrated supervision to replace discrete reset ICs and simplify ECU power architecture.
FAQ
What output voltages does the MAX6793TPZD4+T provide?
The MAX6793TPZD4+T provides two outputs: OUT1 is preset to 3.3V (indicated by 'Z' in the part number), and OUT2 is a fixed 5V output. OUT1 can also be adjusted from 1.8V to 11V using an external resistor divider connected to SET1. The 'Z' suffix confirms the 3.3V configuration for MAX6793TPZD4+T, distinguishing it from other variants like MAX6793TPSD4+T (3.3V) or MAX6793TPLD4+T (5V).
How is the 200ms reset timeout implemented in MAX6793TPZD4+T?
The 'D4' in MAX6793TPZD4+T specifies a factory-programmed 200ms reset timeout period. This is achieved by connecting the CSRT pin to OUT1, enabling the internal fixed timeout. No external capacitor is required. The reset asserts low when OUT1 drops below 87.5% of nominal (2.888V for 3.3V), then remains low for exactly 200ms after OUT1 recovers above threshold.
Can the MAX6793TPZD4+T be used without external components for basic operation?
Yes - MAX6793TPZD4+T operates with minimal externals: one 1μF capacitor on IN, one 10μF capacitor on OUT1, and one 10μF capacitor on OUT2. The HOLD function enables self-holding without external latches, and GATEP drives a pFET for reverse-battery protection - eliminating diodes, resistors, and discrete supervisors typically needed in automotive LDO designs.
What is the role of the WD-DIS pin on the MAX6793TPZD4+T?
The WD-DIS pin on MAX6793TPZD4+T is an active-low watchdog disable input. Driving WD-DIS low disables the watchdog timer entirely, preventing unintended resets during firmware updates or debug sessions. When left unconnected or pulled high (to OUT1), the watchdog remains active with its default 280ms timeout. This differs from MAX6791/MAX6792 which use WDS0/WDS1 for windowed watchdog control.
Is the MAX6793TPZD4+T AEC-Q100 qualified?
The MAX6793TPZD4+T is not explicitly listed as AEC-Q100 qualified in the provided documentation. While the MAX6795TPLD2/V+ and MAX6795TPSD2/V+ variants carry /V+ suffix denoting AEC-Q100 qualification, MAX6793TPZD4+T lacks the /V+ suffix and is specified for –40°C to +125°C operation with automotive-grade reliability features (load-dump tolerance, thermal protection), but formal AEC-Q100 certification is not confirmed for this specific variant.
MAX6793TPZD4+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:
- 2
- Voltage - Threshold:
- 2.313V, 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)
MAX6793TPZD4+T FAQ
1.How can I place an order for MAX6793TPZD4+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPZD4+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 MAX6793TPZD4+T reliable?
The price and inventory of MAX6793TPZD4+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPZD4+T is usually 5 days.
3.What payment methods are accepted for MAX6793TPZD4+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPZD4+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPZD4+T?
MAX6793TPZD4+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPZD4+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 MAX6793TPZD4+T?
For technical support, including MAX6793TPZD4+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPZD4+T requirements.
6.How does Aetrix verify that MAX6793TPZD4+T is sourced from the original manufacturer or authorized distributors?
All MAX6793TPZD4+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 MAX6793TPZD4+T meets industry standards.
7.What is the process for return or replacement of MAX6793TPZD4+T?
All MAX6793TPZD4+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPZD4+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 MAX6793TPZD4+T part is unused and in its original packaging.
Return procedure for MAX6793TPZD4+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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