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Analog Devices Inc./Maxim Integrated MAX6796TPLD3+T
- Part No.:
- MAX6796TPLD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPLD3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,403
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Product details
Overview
MAX6796TPLD3+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. It delivers up to 300mA at 5V (±2.5% over -40°C to +125°C), operates from 5V to 72V input, consumes only 68μA quiescent current, and features a fixed 50ms reset timeout period with 87.5% reset threshold - ideal for engine control units under load-dump conditions.
For engineers reviewing the MAX6796TPLD3+T datasheet, MAX6796TPLD3+T pinout, MAX6796TPLD3+T application, or MAX6796TPLD3+T equivalent, key selection criteria include its AEC-Q100-qualified 5mm × 5mm TQFN package, dual-mode watchdog disable capability, HOLD-enabled self-holding circuit implementation, and guaranteed operation across -40°C to +125°C ambient.
Technical Context
The MAX6796TPLD3+T implements a single LDO regulator with internal pFET pass element and precision bandgap reference, supporting fixed 5V output (L option) with 92.5%/87.5% reset threshold options. Its RESET output is push-pull active-low, asserting when OUT drops below threshold and holding low for 50ms after recovery.
It integrates a programmable watchdog timer with fixed 280ms timeout (min), disable via WD-DIS pin, and a HOLD input that latches regulator ON independent of ENABLE state - enabling ignition-key-triggered self-holding without external components in automotive body control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external protection |
| Output Current | 300mA continuous - supports microcontroller, CAN transceiver, and sensor rail in ECUs |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive applications |
| Reset Timeout | 50ms fixed - ensures reliable µP initialization after brownout recovery |
| Dropout Voltage | 420mV typ. at 100mA - maintains regulation down to VIN = VOUT + 0.42V |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive environments |
| Reset Threshold | 87.5% of nominal output - 4.375V for 5V output, with ±125mV tolerance over temperature |
Pinout & Package
MAX6796TPLD3+T is housed in a thermally enhanced 20-pin TQFN-EP (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) connected internally to GND for optimal thermal dissipation (2.7W max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output - delivers up to 300mA at preset 5V (L option); requires ≥10μF ceramic capacitor to GND |
| 3 | SET | Feedback input - tied to GND for fixed 5V output; connects to resistive divider for adjustable 1.8V–11V operation |
| 4 | PFO | Open-drain power-fail output - asserts low when PFI < 1.231V; used for early battery-low warning |
| 5 | CSWT | Watchdog timeout adjust - connected to OUT for fixed 280ms timeout; capacitor to GND enables adjustment |
| 6 | CSRT | Reset timeout adjust - connected to OUT for fixed 50ms timeout (D3 option); capacitor enables user-defined delay |
| 7 | GND | Analog/digital ground - common return for all circuits; EP must be soldered to PCB ground plane |
| 8 | RESET | Push-pull active-low reset - drives µP reset pin directly; holds low for 50ms after VOUT recovers |
| 11 | WDI | Watchdog input - requires edge transition within 280ms to prevent reset assertion |
| 12 | HOLD | Active-low latch enable - forces regulator ON even if ENABLE goes low; releases ON-state when pulled high |
| 16 | PFI | Power-fail comparator input - sets custom brownout threshold via resistor divider referenced to 1.231V |
| 17,18 | IN | Main input supply - bypassed with 1μF ceramic capacitor; accepts 5V–72V with reverse-battery protection via GATEP |
| 19 | GATEP | pFET gate drive - controls external p-channel MOSFET for reverse-polarity protection (no diode drop) |
| 20 | ENABLE | Active-high regulator enable - internally pulled down; driven high by ignition switch or system controller |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby in always-on automotive modules |
| Integrated reverse-battery protection | GATEP output drives external pFET - eliminates series diode, preserving VIN-to-VOUT efficiency |
| Self-holding circuit support | HOLD input latches regulator ON after ENABLE pulse - no external latch IC or discrete logic required |
| Adjustable power-fail detection | PFI input with 1.231V reference allows precise brownout threshold setting for battery monitoring |
| Thermal & short-circuit protection | 165°C shutdown with 20°C hysteresis and 480mA short-circuit limit - ensures robustness in harsh environments |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers MCU, CAN transceiver, and analog sensors in gasoline/diesel engine compartments exposed to 125°C ambient and load-dump transients. IC Role / Device Role / Timing Role: Primary 5V LDO regulator with reset supervision and watchdog monitoring for safety-critical firmware execution. Use Value: 72V input range and thermal shutdown ensure uninterrupted operation during cranking and load dump; 50ms reset guarantees deterministic MCU boot after voltage recovery. | Use Scenario: Supplies door module microcontrollers and LIN transceivers in vehicle interior, requiring ignition-triggered latching and low sleep current. IC Role / Device Role / Timing Role: Power supervisor with HOLD-enabled self-hold function, eliminating need for external latch circuitry. Use Value: HOLD input allows single ENABLE pulse from ignition switch to sustain regulator ON - reducing BOM count and PCB space vs. discrete latch solutions. |
| Advanced Driver Assistance Systems (ADAS) | Telematics Control Unit (TCU) |
Use Scenario: Powers radar processor and image sensor interface in front-end ADAS domain controllers operating near engine bay. IC Role / Device Role / Timing Role: High-reliability 5V regulator with windowed watchdog disable and power-fail alert for fail-safe subsystem management. Use Value: WD-DIS pin allows deterministic watchdog disable during firmware updates; PFO provides early warning before critical brownout-induced data loss. | Use Scenario: Supplies cellular modem, GPS receiver, and secure element in always-connected vehicle telematics units with strict battery drain limits. IC Role / Device Role / Timing Role: Micropower supervisory regulator enabling ultra-low sleep mode (<27μA shutdown current) while maintaining fast wake-up readiness. Use Value: 27μA shutdown current extends battery backup runtime; 180µs startup time ensures rapid network reconnection after ignition cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage supervisory regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPLD3+T | Identical pinout, specs, and features - differs only in output voltage option (5V vs. MAX6796's 5V); MAX6795 is L/M/T/S/Z/Y/W/V variant family member | Same automotive ECU/BCM use cases; MAX6795TPLD3+T shares identical D3 reset timeout and L (5V) output configuration | Select MAX6795TPLD3+T only if cross-referenced in legacy BOMs; MAX6796TPLD3+T is current production part per Maxim ordering guide |
| TPS7B8750QKVURQ1 | 40V max input (vs. 72V), 250mA output (vs. 300mA), 35μA IQ (vs. 68μA), fixed 5V only, no HOLD function, no GATEP reverse-protection drive | Suitable for 12V/24V systems without load-dump stress; lacks self-hold and reverse-battery drive needed in premium automotive designs | Choose TPS7B8750QKVURQ1 for cost-sensitive 24V-only applications where HOLD and GATEP are unnecessary; MAX6796TPLD3+T remains superior for full 12V/24V/48V compatibility and functional safety features |
Compared with MAX6795TPLD3+T, the MAX6796TPLD3+T offers identical functionality but reflects updated Maxim part numbering for the same 5V/L/D3 configuration; versus TPS7B8750QKVURQ1, it provides 32V higher input tolerance, 50mA higher output, integrated HOLD latching, and GATEP-driven reverse-battery protection - critical for robust under-hood deployment.
Availability
MAX6796TPLD3+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 automotive qualification.
Supply support for MAX6796TPLD3+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 product line delivers high-voltage, micropower linear regulators with integrated reset, watchdog, and power-fail supervision - engineered specifically for automotive subsystems demanding AEC-Q100 compliance, load-dump resilience, and ultra-low quiescent current.
FAQ
What output voltage does MAX6796TPLD3+T deliver, and how is it configured?
MAX6796TPLD3+T delivers a fixed 5V output (L option) with ±2.5% accuracy over -40°C to +125°C. The "L" in the part number denotes 5V preset; SET pin is internally connected to GND for this configuration. No external feedback resistors are required - simplifying layout and improving stability in automotive environments.
Does MAX6796TPLD3+T support reverse-battery protection, and how is it implemented?
Yes, MAX6796TPLD3+T supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. When reverse polarity is applied, the IC disables GATEP, turning off the MOSFET and blocking current - eliminating the 0.3–0.7V forward drop and power loss of traditional series diodes. This architecture preserves system efficiency and thermal margin.
What is the function of the HOLD pin on MAX6796TPLD3+T, and how does it differ from ENABLE?
The HOLD pin on MAX6796TPLD3+T provides latched ON-state control: once ENABLE goes high and the regulator starts, pulling HOLD low sustains output even if ENABLE returns low. Releasing HOLD shuts down the regulator. Unlike ENABLE - which acts as a momentary ON trigger - HOLD enables self-holding circuits without external components, critical for ignition-switched automotive modules.
How is the 50ms reset timeout period set in MAX6796TPLD3+T, and can it be modified?
The "D3" in MAX6796TPLD3+T specifies a factory-programmed 50ms reset timeout period. This is implemented by connecting CSRT pin to OUT internally; no external capacitor is needed. To modify the timeout, disconnect CSRT from OUT and connect a capacitor to GND - enabling user-adjustable delays from ~35μs to 260ms per the datasheet's CSRT timing chart.
Is MAX6796TPLD3+T qualified for automotive use, and what standards does it meet?
Yes, MAX6796TPLD3+T is AEC-Q100 qualified (Grade 0: -40°C to +150°C junction) and specified for -40°C to +125°C ambient operation. It meets automotive requirements for load-dump immunity (72V transient), thermal shutdown (165°C), and long-term reliability in under-hood environments - validated per JEDEC JESD47 and AEC stress test protocols.
MAX6796TPLD3+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:
- 1
- Voltage - Threshold:
- 4.625V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 35ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6796TPLD3+T FAQ
1.How can I place an order for MAX6796TPLD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPLD3+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 MAX6796TPLD3+T reliable?
The price and inventory of MAX6796TPLD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPLD3+T is usually 5 days.
3.What payment methods are accepted for MAX6796TPLD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPLD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPLD3+T?
MAX6796TPLD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPLD3+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 MAX6796TPLD3+T?
For technical support, including MAX6796TPLD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPLD3+T requirements.
6.How does Aetrix verify that MAX6796TPLD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6796TPLD3+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 MAX6796TPLD3+T meets industry standards.
7.What is the process for return or replacement of MAX6796TPLD3+T?
All MAX6796TPLD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPLD3+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 MAX6796TPLD3+T part is unused and in its original packaging.
Return procedure for MAX6796TPLD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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