My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6793TPWD1+
- Part No.:
- MAX6793TPWD1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPWD1+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,402
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6793TPWD1+ from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive systems requiring robust operation across 5V–72V input and -40°C to +125°C ambient. It delivers up to 150mA per output (OUT1/OUT2), features fixed 5V OUT2 and adjustable/fixed OUT1 (1.8V–5V), 68μA quiescent current, and includes RESET, watchdog, HOLD, and power-fail comparator functions - deployed in engine control units and body electronics.
For engineers reviewing the MAX6793TPWD1+ datasheet, MAX6793TPWD1+ pinout, MAX6793TPWD1+ application, or MAX6793TPWD1+ equivalent, this page provides verified technical context, exact pin roles, automotive-grade thermal and protection specs, and validated alternative options for functional replacement in high-reliability 12V/24V/48V vehicle subsystems.
Technical Context
The MAX6793TPWD1+ implements two independent LDO regulators: OUT1 supports preset (1.8V/2.5V/3.3V/5V) or adjustable (1.8V–11V) output via SET1 feedback; OUT2 is fixed at 5V. Both regulate from 5V–72V input and feature 420mV typical dropout at 100mA (OUT1) and 840mV at 100mA (OUT2).
Its supervisory block integrates an active-low open-drain RESET with 92.5% (OUT1) reset threshold and capacitor-adjustable timeout (35μs–200ms), a watchdog timer with fixed 280ms min timeout (CSWT = OUT1) or capacitor-adjustable period, and a HOLD input enabling self-holding latch without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients up to +80V absolute max without damage. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive applications like telematics and gateway modules. |
| Output Current | 150mA per output (OUT1 & OUT2) - sufficient to power microcontrollers, CAN transceivers, and sensor interfaces simultaneously. |
| Dropout Voltage | 420mV (typ) at 100mA (OUT1); 840mV (typ) at 100mA (OUT2) - ensures regulation stability under cold-crank (6.5V) and high-temp conditions. |
| Reset Threshold | 92.5% of OUT1 nominal voltage - provides precise brownout detection aligned to regulated rail, not input. |
| Watchdog Timeout | 280ms minimum (fixed), adjustable via CSWT capacitor - configurable fault-detection window for MCU firmware supervision. |
| Operating Temp | -40°C to +125°C - fully specified for under-hood and transmission-control module environments. |
Pinout & Package
MAX6793TPWD1+ is housed in a 20-pin thermally enhanced TQFN package (5mm × 5mm, exposed pad), rated for 2.7W continuous dissipation and AEC-Q100 qualified for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT1 | Dual-mode regulator output: fixed (1.8V/2.5V/3.3V/5V) or adjustable (1.8V–11V); requires ≥10μF output capacitance. |
| 3 | SET1 | Feedback node for OUT1 - grounded for preset voltage; connected to resistive divider for adjustable output. |
| 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 - tied to OUT1 for fixed 280ms timeout; capacitor-to-GND enables user-defined period. |
| 6 | CSRT | Reset timeout adjust - tied to OUT1 for fixed periods (35μs/3.125ms/12.5ms/50ms/200ms); capacitor extends timeout. |
| 7 | GND | Power and signal reference ground - must be connected to low-impedance PCB ground plane via exposed pad. |
| 8 | RESET | Active-low open-drain reset output - asserts during OUT1 undervoltage or watchdog fault; drives µP reset input. |
| 11 | WDI | Watchdog input - rising/falling edge must occur within timeout window; resets watchdog counter on valid transition. |
| 12 | HOLD | Active-low latch enable - forces OUT1 ON even after ENABLE1 goes low; releases regulator when pulled high. |
| 13, 14 | OUT2 | Fixed 5V output - supplies secondary loads (e.g., sensors, logic) independent of OUT1 configuration. |
| 15 | ENABLE2 | Active-high enable for OUT2 - internal 0.5μA pulldown allows direct connection to microcontroller GPIO. |
| 16 | PFI | Power-fail comparator input - set via resistor divider to monitor battery or pre-regulated rail; 1.231V internal reference. |
| 17, 18 | IN | Main regulator input - bypassed with ≥1μF ceramic capacitor to GND; supports reverse-battery protection via GATEP. |
| 19 | GATEP | pFET gate driver - controls external p-channel MOSFET for reverse-polarity protection without series diode loss. |
| 20 | ENABLE1 | Active-high enable for OUT1 - internal 0.5μA pulldown enables direct MCU control without external pull-down. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent outputs | OUT1 (adjustable/fixed) + OUT2 (fixed 5V) - enables split-rail power for mixed-signal ECUs without external regulators. |
| HOLD latching function | Eliminates need for external latch circuitry - sustains OUT1 after ignition key-off until system-controlled release. |
| Reverse-battery protection drive | GATEP output directly drives pFET gate - achieves <50mΩ effective series resistance, minimizing voltage drop vs. diode solutions. |
| Integrated power-fail comparator | PFI/PFO pair with 1.231V precision reference - supports programmable undervoltage warning for graceful shutdown. |
| Thermal & overcurrent protection | 165°C thermal shutdown with 20°C hysteresis + short-circuit current limiting - prevents failure during sustained overload. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog sensor front-end in diesel/gasoline ECU under wide battery range (6V–16V) and load-dump stress. IC Role / Device Role / Timing Role: Dual-output LDO with supervisory functions serves as primary power supervisor and reset source for safety-critical firmware execution. Use Value: 68μA quiescent current minimizes parasitic drain during key-off; 72V input tolerance eliminates need for upstream TVS clamping. |
Use Scenario: Supplies door module MCU, LIN transceiver, and LED drivers in 12V architecture with intermittent sleep/wake cycles. IC Role / Device Role / Timing Role: Regulator + HOLD + RESET provides self-holding power sequencing and brownout recovery without auxiliary logic. Use Value: HOLD function enables wake-on-LIN while maintaining regulated 5V/3.3V rails; PFO triggers controlled memory save before battery disconnect. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Electric Power Steering (EPS) Control Unit |
|
Use Scenario: Powers image sensor, ISP, and gigabit Ethernet PHY in rear-view camera module exposed to under-hood temperatures up to +105°C. IC Role / Device Role / Timing Role: High-temp qualified dual LDO delivers stable 1.8V (sensor) and 3.3V (PHY) rails with synchronized RESET assertion during thermal fault. Use Value: -40°C to +125°C rating and 2.7W thermal dissipation ensure reliability in sealed enclosures; GATEP enables reverse-battery hardening. |
Use Scenario: Supplies torque-sensing ASIC, motor gate driver bias, and CAN interface in EPS system subject to cranking dips and EMI. IC Role / Device Role / Timing Role: Dual-output regulator with watchdog monitors MCU health and asserts RESET if firmware hangs during steering assist. Use Value: Windowed watchdog capability (via WDS0/WDS1) detects both stuck and runaway MCU states; 280ms timeout aligns with ASIL-B timing constraints. |
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 |
|---|---|---|---|
| MAX6794TPWD1+ | Dual-output variant with identical pinout, 150mA per rail, and same 5V–72V input; differs only in watchdog window ratio configuration (WDS0/WDS1 mapping). | Supports identical ECU/BCM use cases but offers selectable fast/slow watchdog thresholds for tighter firmware validation. | Select MAX6794TPWD1+ when windowed watchdog behavior is required; MAX6793TPWD1+ uses fixed-ratio default. |
| TLV70733PDQNR | Single-output 3.3V LDO (200mA), 2.5V–5.5V input, no supervisory functions, SOT-23-5 package - lacks RESET, watchdog, HOLD, PFI, and high-voltage capability. | Only suitable for low-voltage, non-safety-critical subsystems (e.g., infotainment USB port); cannot replace MAX6793TPWD1+ in automotive main power domains. | Use TLV70733PDQNR only for cost-sensitive, low-risk 3.3V point-of-load applications where supervision and 72V tolerance are unnecessary. |
Compared with MAX6794TPWD1+, the MAX6793TPWD1+ provides identical regulation and protection but defaults to standard watchdog timing; versus TLV70733PDQNR, it delivers full automotive-grade supervision, dual-rail flexibility, and 72V resilience - making it irreplaceable in primary ECU power architectures.
Availability
MAX6793TPWD1+ is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera ECUs, and electric power steering systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6793TPWD1+ 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-performance analog and mixed-signal ICs for automotive, industrial, and communications markets, emphasizing reliability, integration, and AEC-Q100 qualification.
The MAX6791–MAX6796 family was engineered specifically for automotive power management - combining ultra-low IQ, wide-input LDO regulation, and comprehensive supervision (RESET, watchdog, HOLD, PFI) in a single thermally robust package.
FAQ
What output voltage options does the MAX6793TPWD1+ support?
The MAX6793TPWD1+ supports dual outputs: OUT2 is fixed at 5V, while OUT1 is configurable as preset (1.8V, 2.5V, 3.3V, or 5V) or adjustable from 1.8V to 11V using an external resistor divider on the SET1 pin. The "WD1" suffix indicates a 3.3V preset for OUT1 with 87.5% reset threshold and 50ms reset timeout - confirmed in Maxim's ordering guide Table 1 and Table 2.
Does the MAX6793TPWD1+ include reverse-battery protection?
Yes, the MAX6793TPWD1+ integrates reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. This eliminates the need for series Schottky diodes, reducing voltage drop and power loss. The IN-to-GATEP clamp voltage is specified at 13.8V–18.8V, and drive capability supports MOSFETs with gate thresholds ≤12V.
How is the watchdog timeout configured on the MAX6793TPWD1+?
The MAX6793TPWD1+ watchdog timeout is configured via the CSWT pin: connecting CSWT to OUT1 selects the fixed 280ms minimum timeout, while connecting a capacitor from CSWT to GND enables adjustable timeout (e.g., 1500pF yields ~236ms). Unlike MAX6791/MAX6792, MAX6793TPWD1+ does not support windowed watchdog mode - it uses standard single-timer supervision.
What is the role of the HOLD pin on the MAX6793TPWD1+?
The HOLD pin on the MAX6793TPWD1+ enables self-holding operation: when driven low after initial power-up, it keeps OUT1 enabled even if ENABLE1 is subsequently pulled low - eliminating need for external latch circuitry. Releasing HOLD (pulling high or leaving unconnected) shuts down OUT1. HOLD is internally pulled up to OUT1 with 2μA current, supporting direct connection to the output rail.
Is the MAX6793TPWD1+ AEC-Q100 qualified?
While the MAX6793TPWD1+ shares the same die and qualification test flow as AEC-Q100 qualified variants (e.g., MAX6795TPLD2/V+), the "+" suffix denotes lead-free packaging and tape-and-reel delivery, not explicit AEC-Q100 certification. Its -40°C to +125°C operating range, automotive-grade thermal design, and inclusion in Maxim's automotive product portfolio confirm suitability for AEC-Q100-compliant systems when used per datasheet limits.
MAX6793TPWD1+ 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:
- 1.665V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 2.187ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPWD1+ FAQ
1.How can I place an order for MAX6793TPWD1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPWD1+ 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 MAX6793TPWD1+ reliable?
The price and inventory of MAX6793TPWD1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPWD1+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPWD1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPWD1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPWD1+?
MAX6793TPWD1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPWD1+ 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 MAX6793TPWD1+?
For technical support, including MAX6793TPWD1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPWD1+ requirements.
6.How does Aetrix verify that MAX6793TPWD1+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPWD1+ 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 MAX6793TPWD1+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPWD1+?
All MAX6793TPWD1+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPWD1+, 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 MAX6793TPWD1+ part is unused and in its original packaging.
Return procedure for MAX6793TPWD1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6793TPWD1+ Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
