My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6793TPYD2+
- Part No.:
- MAX6793TPYD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPYD2+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,286
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6793TPYD2+ 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 (e.g., 3.3V), and includes active-low open-drain RESET, watchdog timer, HOLD, and ENABLE1/ENABLE2 control - all in a thermally enhanced 20-pin TQFN package.
For engineers reviewing the MAX6793TPYD2+ datasheet, MAX6793TPYD2+ pinout, MAX6793TPYD2+ application, or MAX6793TPYD2+ equivalent, key selection criteria include its dual-regulator architecture with independent enable control, 87.5% reset threshold on OUT1, capacitor-adjustable 12.5ms reset timeout (D2 suffix), and AEC-Q100-qualified thermal performance across –40°C to +125°C.
Technical Context
The MAX6793TPYD2+ implements two independent LDO regulators: OUT1 supports preset (3.3V) or adjustable (1.8V–11V) output via SET1 feedback, while OUT2 is fixed at 5V. Its supervisory block integrates a windowed watchdog timer (disabled in MAX6793), a power-fail comparator (PFI/PFO), and a reset generator with 92.5%/87.5% threshold tracking relative to OUT1/OUT2.
Control logic enables self-holding operation via HOLD input (internally pulled to OUT1), dual enable inputs (ENABLE1/ENABLE2), and watchdog disable via WD-DIS. The device uses internal current-limiting, thermal shutdown (+165°C), and output overvoltage protection (1.05×VOUT) to ensure reliability under automotive load-dump and reverse-battery conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external protection circuitry. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-powered automotive modules. |
| Output Current | 150mA per output (OUT1 & OUT2) - sufficient for microcontroller core/logic rails and peripheral ICs. |
| Reset Threshold | 87.5% of OUT1 nominal voltage - ensures reliable brownout detection before system malfunction. |
| Reset Timeout | 12.5ms (D2 suffix, capacitor-adjustable) - configurable reset hold time to meet µP reset timing requirements. |
| 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 high ambient temperatures. |
Pinout & Package
MAX6793TPYD2+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN package with exposed pad (EP) connected internally to GND. The package supports high-power dissipation (2.7W) and meets AEC-Q100 requirements for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT1 | Main regulator output (3.3V preset per Y suffix); requires ≥10µF ceramic capacitor to GND for stability. |
| 3 | SET1 | Feedback node for OUT1; grounded for 3.3V preset, or connected to resistive divider for adjustable output. |
| 4 | PFO | Active-low open-drain power-fail output; asserts when PFI falls below 1.231V threshold. |
| 5 | CSWT | Watchdog timeout adjust input; tied to OUT1 for fixed 280ms timeout (not used in MAX6793). |
| 6 | CSRT | Reset timeout adjust input; tied to OUT1 for fixed 12.5ms timeout (D2 suffix). |
| 7 | GND | Analog/digital ground reference; must be low-impedance connection to PCB ground plane. |
| 8 | RESET | Active-low open-drain reset output; tracks OUT1 voltage and holds low for 12.5ms after recovery. |
| 11 | WDI | Watchdog input; toggling required within timeout period to prevent reset assertion. |
| 12 | HOLD | Active-low hold input; forces OUT1 ON even if ENABLE1 is deasserted - enables self-holding circuits. |
| 13, 14 | OUT2 | Fixed 5V secondary output; supplies auxiliary loads independently of OUT1 regulation. |
| 15 | ENABLE2 | Active-high enable for OUT2; allows independent control of 5V rail during system sequencing. |
| 16 | PFI | Power-fail comparator input; configured with external resistor divider to set custom undervoltage warning threshold. |
| 17, 18 | IN | Main input supply pins; bypassed with ≥1µF ceramic capacitor to GND near package. |
| 19 | GATEP | pFET gate drive output; controls external p-channel MOSFET for reverse-battery protection. |
| 20 | ENABLE1 | Active-high enable for OUT1; internally pulled down (0.5μA) - compatible with open-collector MCU outputs. |
| EP | Exposed Pad | Internally connected to GND; must be soldered to PCB ground plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | OUT1 (3.3V preset) + OUT2 (fixed 5V) - enables split-rail power for MCU + peripherals without external regulators. |
| Self-holding circuit support | HOLD input eliminates need for external latch components - simplifies ignition-controlled power sequencing. |
| Capacitor-adjustable reset timeout | CSRT pin allows precise tuning of reset hold time (e.g., 12.5ms D2 setting) to match µP reset specifications. |
| Reverse-battery protection driver | GATEP output drives external pFET - replaces lossy series diode, reducing voltage drop and heat generation. |
| Integrated power-fail monitoring | PFI/PFO comparator provides early warning of battery sag - enables safe firmware shutdown before brownout. |
| AEC-Q100 qualified operation | Rated for –40°C to +125°C with thermal shutdown (+165°C) and overcurrent protection - suitable for engine compartment use. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Powering 3.3V microcontroller core and 5V sensor interface ICs in an under-hood ECU subject to 72V load-dump transients and wide temperature swings. IC Role / Device Role / Timing Role: Dual-output LDO regulator with integrated reset and watchdog - provides sequenced, supervised power with fault detection and recovery. Use Value: Eliminates need for discrete reset IC and external hold circuitry; 68μA IQ extends battery life in sleep mode. |
Use Scenario: Supplying vision processor I/O rails and radar transceiver bias in a front-camera module operating at ambient temperatures up to +105°C. IC Role / Device Role / Timing Role: High-reliability dual LDO with PFI-based pre-brownout warning and HOLD-enabled ignition latching. Use Value: Enables deterministic power-down sequence before battery collapse; GATEP-driven reverse protection avoids diode voltage loss. |
| Body Control Module (BCM) | Infotainment Head Unit |
|
Use Scenario: Regulating 3.3V CAN transceiver and 5V LIN bus interface in a distributed BCM node powered directly from vehicle battery. IC Role / Device Role / Timing Role: Supervisory dual LDO with independent ENABLE1/ENABLE2 - supports flexible power domain control and wake-up sequencing. Use Value: Dual enable inputs allow separate control of MCU core and communication peripherals; RESET output synchronizes firmware initialization. |
Use Scenario: Providing stable 3.3V core voltage and 5V USB PHY power in a head unit with always-on accessory mode and cold-cranking resilience. IC Role / Device Role / Timing Role: Automotive-grade dual LDO with watchdog supervision - prevents lockup during voltage sags during engine start. Use Value: Watchdog timer monitors host processor activity; WDI timeout triggers hardware reset without software intervention. |
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 |
|---|---|---|---|
| MAX6794TPYD2+ | Dual-output like MAX6793TPYD2+, but includes windowed watchdog timer (WDS0/WDS1 inputs) and additional logic-select pins. | Required where watchdog windowing (min/max timeout enforcement) is mandated for functional safety compliance (e.g., ISO 26262 ASIL-B). | Select MAX6794TPYD2+ only if windowed watchdog functionality is needed; otherwise MAX6793TPYD2+ offers simpler control and lower pin count. |
| TLV70733PDQNR | Single-output 3.3V LDO (300mA), 1.8V–5.5V input, no supervisory features, SOT-23-5 package. | Lacks RESET, watchdog, HOLD, PFI, and dual-rail capability - suitable only for non-safety-critical, low-voltage subsystems. | Use TLV70733PDQNR only in cost-sensitive, non-automotive applications with <6V input and no supervision requirements. |
Compared with MAX6794TPYD2+, MAX6793TPYD2+ omits windowed watchdog logic - reducing complexity and BOM count where basic timeout supervision suffices. Compared with TLV70733PDQNR, it adds full automotive supervision, dual outputs, and 72V tolerance - enabling single-chip power management in harsh environments.
Availability
MAX6793TPYD2+ 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 voltage ranges.
Supply support for MAX6793TPYD2+ 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 demanding industrial, automotive, and communications applications.
The MAX6791–MAX6796 family was developed specifically for automotive power management, integrating high-voltage LDO regulation with supervisory functions - including reset, watchdog, power-fail detection, and reverse-battery protection - in a single AEC-Q100-qualified package.
FAQ
What output voltage does MAX6793TPYD2+ deliver on OUT1?
MAX6793TPYD2+ delivers a preset 3.3V on OUT1, as indicated by the 'Y' in the part number suffix. This is confirmed in the Ordering Information table and Electrical Characteristics section, where 'T/S' denotes 3.3V output with ±2.5% tolerance over temperature and load. The SET1 pin is internally connected to GND for this configuration.
How is the 12.5ms reset timeout implemented in MAX6793TPYD2+?
The 'D2' suffix in MAX6793TPYD2+ specifies a factory-trimmed 12.5ms reset timeout period. Internally, this is achieved using a precision current source charging CSRT to a fixed threshold; the D2 option corresponds to the 'D2' row in Table 2 of the datasheet. No external capacitor is required unless user adjustment is desired.
Does MAX6793TPYD2+ support reverse-battery protection?
Yes, MAX6793TPYD2+ supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. When battery polarity is reversed, the device disables GATEP output and blocks current flow - eliminating the need for a series Schottky diode and its associated 0.3V–0.4V forward drop.
Can MAX6793TPYD2+ be used in a single-output configuration?
No - MAX6793TPYD2+ is a dual-output device with fixed 3.3V OUT1 and fixed 5V OUT2. It cannot be configured as single-output. For single-output alternatives, consider MAX6795TPYD2+ (3.3V, 300mA) or MAX6796TPYD2+ (3.3V, adjustable), both sharing the same Y/D2 suffix coding.
What is the function of the HOLD pin on MAX6793TPYD2+?
The HOLD pin on MAX6793TPYD2+ is an active-low input that forces OUT1 to remain ON even after ENABLE1 is deasserted. Once enabled, pulling HOLD low creates a self-holding state - essential for ignition-switched automotive systems where the MCU must stay powered after key-off for controlled shutdown sequences.
MAX6793TPYD2+ 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:
- 2.188V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPYD2+ FAQ
1.How can I place an order for MAX6793TPYD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPYD2+ 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 MAX6793TPYD2+ reliable?
The price and inventory of MAX6793TPYD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPYD2+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPYD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPYD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPYD2+?
MAX6793TPYD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPYD2+ 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 MAX6793TPYD2+?
For technical support, including MAX6793TPYD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPYD2+ requirements.
6.How does Aetrix verify that MAX6793TPYD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPYD2+ 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 MAX6793TPYD2+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPYD2+?
All MAX6793TPYD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPYD2+, 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 MAX6793TPYD2+ part is unused and in its original packaging.
Return procedure for MAX6793TPYD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6793TPYD2+ 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…
