My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6793TPSD1+T
- Part No.:
- MAX6793TPSD1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPSD1+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,123
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6793TPSD1+T 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 (OUT1 and fixed 5V OUT2), operates from 5V to 72V input, consumes only 68μA quiescent current, and features active-low open-drain RESET, watchdog timer, and HOLD functionality - deployed in engine control units and body electronics requiring robust brownout recovery.
For engineers reviewing the MAX6793TPSD1+T datasheet, MAX6793TPSD1+T pinout, MAX6793TPSD1+T application, or MAX6793TPSD1+T equivalent, key selection criteria include its dual 150mA outputs, 5V/adjustable OUT1 + fixed 5V OUT2 configuration, -40°C to +125°C AEC-Q100–compatible operation, and integrated reset/watchdog timing with capacitor-adjustable timeout periods.
Technical Context
The MAX6793TPSD1+T implements two independent LDO regulators: OUT1 is adjustable (1.8V–11V) or preset (5V/3.3V/2.5V/1.8V) via SET1, while OUT2 is fixed at 5V. Its supervisory block includes a windowed watchdog timer (with WDS0/WDS1 select), RESET assertion triggered by OUT1 drop below 92.5% of nominal, and capacitor-adjustable reset timeout via CSRT.
It integrates reverse-battery protection via GATEP-driven pFET, thermal shutdown (+165°C), short-circuit current limiting (200–240mA), and power-fail detection using PFI/PFO with 1.231V internal reference. ENABLE1 and ENABLE2 provide independent regulation control, and HOLD enables self-holding latch behavior without external components.
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 systems with ultra-low standby power draw |
| Output Current | 150mA per output (OUT1 & OUT2) - supports dual-rail microcontroller peripherals |
| Dropout Voltage | 840mV typ at 100mA (dual mode) - maintains regulation under high VIN–VOUT differential |
| Reset Threshold | 92.5% of OUT1 nominal voltage - ensures reliable μP reset before functional undervoltage |
| Watchdog Timeout | 280ms min fixed or capacitor-adjustable - configurable fault-detection window for safety-critical firmware |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive environments |
Pinout & Package
MAX6793TPSD1+T is housed in a thermally enhanced 20-pin TQFN-EP package (5mm × 5mm, exposed pad), rated for up to 2.7W continuous dissipation and compatible with AEC-Q100 automotive qualification requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Regulator 1 Output | Adjustable (1.8V–11V) or preset (5V/3.3V/2.5V/1.8V); max 150mA; requires ≥10μF output capacitance |
| SET1 | Feedback Input | Grounded for preset voltage; connected to resistive divider for adjustable output |
| PFO | Power-Fail Comparator Output | Active-low open-drain signal asserting when PFI falls below 1.231V threshold |
| CSWT | Watchdog Timeout Adjust | Connected to OUT1 for fixed 280ms timeout; capacitor-to-GND enables user-defined period |
| CSRT | Reset Timeout Adjust | Connected to OUT1 for fixed timeout (35μs/3.125ms/12.5ms/50ms/200ms); capacitor enables scaling |
| RESET | Supervisory Reset Output | Active-low open-drain; asserts during OUT1 undervoltage or watchdog fault; holds low for full timeout |
| WDI | Watchdog Input | Edge-sensitive input - transition required within timeout window to prevent reset assertion |
| HOLD | Regulator Hold Control | Active-low; latches regulator ON after enable, enabling ignition-key–driven self-hold circuits |
| ENABLE1 / ENABLE2 | Independent Enable Inputs | Active-high; ENABLE1 controls OUT1, ENABLE2 controls fixed 5V OUT2 - each internally pulled down |
| GATEP | pFET Gate Driver | Drives external p-channel MOSFET for reverse-battery protection without series diode loss |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | OUT1 (adjustable/preset) + fixed 5V OUT2 - eliminates need for second discrete LDO in dual-rail systems |
| Capacitor-adjustable timing | CSRT and CSWT pins support precise, board-level tuning of reset and watchdog timeouts without firmware changes |
| Integrated reverse-battery protection | GATEP output drives external pFET - removes 0.3–0.7V diode drop, improving efficiency and thermal performance |
| Self-holding latch function | HOLD input enables ignition-switch–initiated power sequencing without external latch IC or discrete logic |
| AEC-Q100 qualified operation | Specified across -40°C to +125°C ambient - validated for direct integration into ECU, ADAS, and body control modules |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powers microcontroller core and CAN transceiver from 12V battery with load-dump immunity. IC Role / Device Role / Timing Role: Dual-output LDO provides isolated 3.3V MCU rail and 5V CAN PHY supply; RESET monitors 3.3V rail and triggers safe firmware restart on brownout. Use Value: 68μA quiescent current extends battery life in stop-start systems; 72V input range survives ISO 7637-2 pulse 5a without external TVS. | Use Scenario: Supplies image sensor and radar processor in parking assist module with fail-safe supervision. IC Role / Device Role / Timing Role: OUT1 powers 1.8V sensor interface; OUT2 supplies 5V radar ASIC; watchdog monitors sensor firmware heartbeat. Use Value: Windowed watchdog (via WDS0/WDS1) detects both stuck and runaway firmware; HOLD enables ignition-triggered power hold during key-off delay. |
| Body Control Module (BCM) | Infotainment Power Sequencing |
Use Scenario: Regulates power for door lock actuator drivers and LIN transceivers in harsh under-dash environment. IC Role / Device Role / Timing Role: Fixed 5V OUT2 powers LIN PHY; adjustable OUT1 set to 5V supplies actuator H-bridge logic; PFI monitors battery voltage for low-battery warning. Use Value: PFI comparator with 1.231V reference enables accurate battery monitoring using simple resistor divider; thermal shutdown prevents latch-up during sustained 85°C ambient. | Use Scenario: Sequences power to display controller, audio codec, and USB hub in head unit with controlled startup timing. IC Role / Device Role / Timing Role: ENABLE1/ENABLE2 allow staggered turn-on; RESET coordinates system-wide initialization; CSRT sets 50ms reset timeout matching display controller spec. Use Value: Independent enables eliminate need for external GPIO-controlled power switches; capacitor-adjustable CSRT simplifies BOM by removing fixed-timing ICs. |
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 |
|---|---|---|---|
| MAX6794TPSD1+T | Same pinout, identical dual-output architecture, but includes windowed watchdog (WDS0/WDS1) - MAX6793 uses WD-DIS instead | Supports min/max watchdog fault detection; MAX6793 offers simpler watchdog disable via WD-DIS pin | Select MAX6794TPSD1+T if windowed watchdog is required; MAX6793TPSD1+T preferred for cost-sensitive designs needing basic watchdog disable |
| TLE42744G V33 | Single 3.3V output (300mA), no dual output or adjustable OUT1; lacks CSRT/CSWT timing adjust; different pinout and enable logic | Targeted at single-rail MCU supply; no PFI, no HOLD, no reverse-battery driver; lower integration level | Choose TLE42744G V33 only for legacy 3.3V-only systems lacking supervision complexity; not drop-in or functionally equivalent |
Compared with MAX6794TPSD1+T and TLE42744G V33, MAX6793TPSD1+T uniquely balances dual-rail flexibility, capacitor-adjustable supervision timing, and reverse-battery protection in one AEC-Q100–qualified package - making it optimal for new automotive designs requiring compact, feature-rich power management.
Availability
MAX6793TPSD1+T is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, body control modules, and infotainment systems requiring stable component supply across extended temperature and high-reliability automotive lifecycles.
Supply support for MAX6793TPSD1+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 was engineered specifically for high-voltage automotive power domains - delivering micropower operation, integrated supervision, and ruggedized packaging to replace discrete LDO + reset IC + watchdog solutions in ECUs and safety-critical modules.
FAQ
What output voltage options does the MAX6793TPSD1+T support?
The MAX6793TPSD1+T supports preset OUT1 voltages of 5.0V, 3.3V, 2.5V, or 1.8V (selected by grounding SET1), and an adjustable range from 1.8V to 11V using an external resistive divider. Its OUT2 output is fixed at 5.0V. These configurations are confirmed in the Electrical Characteristics table and Pin Description section of the MAX6793TPSD1+T datasheet.
Does the MAX6793TPSD1+T include reverse-battery protection?
Yes, the MAX6793TPSD1+T includes integrated reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. This eliminates the need for a series Schottky diode, reducing voltage drop and power loss. The GATEP clamp voltage is specified at 13.8V–18.8V, and drive capability is validated across the full -40°C to +125°C operating range.
How is the reset timeout period configured on the MAX6793TPSD1+T?
The MAX6793TPSD1+T reset timeout period is configured using the CSRT pin: connecting CSRT to OUT1 selects one of five factory-fixed values (35μs, 3.125ms, 12.5ms, 50ms, or 200ms), while connecting a capacitor from CSRT to GND scales the timeout linearly - e.g., 0.1μF yields ~50ms, 1μF yields ~500ms. This behavior is verified in the Electrical Characteristics and Typical Operating Characteristics sections.
Is the MAX6793TPSD1+T AEC-Q100 qualified?
Yes, the MAX6793TPSD1+T is AEC-Q100 qualified - explicitly stated in the Benefits and Features section and reinforced by its -40°C to +125°C operating temperature specification, thermal shutdown at +165°C, and qualification testing across automotive stress conditions. The /V+ suffix in related variants (e.g., MAX6795TPSD2/V+) confirms automotive qualification, and MAX6793TPSD1+T shares the same package, process, and test flow.
What is the function of the HOLD pin on the MAX6793TPSD1+T?
The HOLD pin on the MAX6793TPSD1+T is an active-low input that enables self-holding behavior: once ENABLE1 turns on OUT1, pulling HOLD low latches the regulator ON even if ENABLE1 is later deasserted. Releasing HOLD (high or floating) shuts down OUT1. This allows ignition-key–initiated power sequencing without external latch circuitry - a design feature confirmed in the Detailed Description and Functional Diagram sections.
MAX6793TPSD1+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:
- 2.888V, 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)
MAX6793TPSD1+T FAQ
1.How can I place an order for MAX6793TPSD1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPSD1+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 MAX6793TPSD1+T reliable?
The price and inventory of MAX6793TPSD1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPSD1+T is usually 5 days.
3.What payment methods are accepted for MAX6793TPSD1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPSD1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPSD1+T?
MAX6793TPSD1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPSD1+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 MAX6793TPSD1+T?
For technical support, including MAX6793TPSD1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPSD1+T requirements.
6.How does Aetrix verify that MAX6793TPSD1+T is sourced from the original manufacturer or authorized distributors?
All MAX6793TPSD1+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 MAX6793TPSD1+T meets industry standards.
7.What is the process for return or replacement of MAX6793TPSD1+T?
All MAX6793TPSD1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPSD1+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 MAX6793TPSD1+T part is unused and in its original packaging.
Return procedure for MAX6793TPSD1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6793TPSD1+T 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…
