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Analog Devices Inc./Maxim Integrated MAX6796TPSD2+
- Part No.:
- MAX6796TPSD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPSD2+.pdf
- Description:
- IC REG LIN W/SPR VSR 20-TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:726
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Product details
Overview
MAX6796TPSD2+ 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 3.3V output (preset), operates from 5V to 72V input, consumes only 68μA quiescent current, and features active-low RESET with 12.5ms timeout (D2 code), watchdog disable capability, and HOLD functionality for self-holding circuits - used in engine control units and body electronics.
For engineers reviewing the MAX6796TPSD2+ datasheet, MAX6796TPSD2+ pinout, MAX6796TPSD2+ application, or MAX6796TPSD2+ equivalent, key selection criteria include its 3.3V fixed output, -40°C to +125°C AEC-Q100–compatible operation, 420mV typical dropout at 100mA, TQFN-20 package thermal performance (2.7W dissipation), and dual-mode watchdog support with adjustable timeout.
Technical Context
The MAX6796TPSD2+ implements a single LDO regulator with internal pFET pass element and precision bandgap reference, enabling stable 3.3V output across wide input (5–72V) and temperature (-40°C to +125°C). Its supervisory block integrates a reset generator with 87.5% reset threshold (relative to VOUT), capacitor-adjustable reset timeout (D2 = 12.5ms), and watchdog timer with fixed 280ms timeout or external capacitor tuning.
It supports reverse-battery protection via GATEP-driven p-channel MOSFET, includes PFI/PFO for programmable undervoltage detection (1.231V threshold), and uses ENABLE/HOLD logic to enable ignition-controlled latching behavior without external components - all within a thermally enhanced 5mm × 5mm TQFN-20 package with exposed pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping |
| Output Voltage | 3.3V (fixed, preset T/S option) - factory-trimmed ±2.5% over full temperature range |
| Max Output Current | 300mA - sufficient for MCU core rails and CAN transceivers in automotive modules |
| Quiescent Current | 68μA - enables always-on systems (e.g., alarm controllers) with minimal battery drain |
| Dropout Voltage | 420mV (typ, 100mA) - maintains regulation down to VIN = 3.72V at 3.3V output |
| Reset Timeout | 12.5ms (D2 code) - ensures reliable microprocessor initialization after brownout recovery |
| Operating Temp | -40°C to +125°C - qualified per AEC-Q100 Grade 0 for under-hood applications |
Pinout & Package
MAX6796TPSD2+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN-EP package (exposed pad connected to GND), rated for 2.7W continuous power dissipation at +70°C ambient. The exposed pad must be soldered to PCB ground plane for thermal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT | Regulator output (3.3V); requires ≥10μF ceramic capacitor to GND for stability |
| 3 | SET | Feedback input; tied to GND for 3.3V preset mode (T/S code) |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V |
| 5 | CSWT | Watchdog timeout adjust; connected to OUT for fixed 280ms timeout |
| 6 | CSRT | Reset timeout adjust; connected to OUT for fixed 12.5ms (D2) timeout |
| 7 | GND | Analog/digital ground reference; connects internally to exposed pad |
| 8 | RESET | Active-low push-pull reset output; asserts during VOUT undervoltage or watchdog fault |
| 11 | WDI | Watchdog input; toggling required within timeout period to prevent reset assertion |
| 12 | HOLD | Active-low hold input; forces regulator ON even after ENABLE goes low |
| 16 | PFI | Power-fail comparator input; sets undervoltage warning threshold via resistor divider |
| 17, 18 | IN | Main regulator input; bypassed with ≥1μF capacitor to GND |
| 19 | GATEP | pFET gate drive output; controls external p-channel MOSFET for reverse-battery protection |
| 20 | ENABLE | Active-high enable input; internally pulled down (0.5μA sink) for default OFF state |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery life in always-on automotive modules |
| Integrated reverse-battery protection | GATEP output drives external pFET - eliminates series diode losses and voltage drop |
| Self-holding circuit support | HOLD input latches regulator ON after ignition-enable pulse - no external latch IC needed |
| Programmable power-fail detection | PFI/PFO pair allows configurable brownout warning (e.g., battery < 11.5V) with 35μs response |
| Thermal & short-circuit protection | 165°C shutdown with 20°C hysteresis and 480mA short-circuit current limit ensure robust field operation |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU and CAN transceiver in gasoline/diesel ECU under harsh under-hood conditions (125°C ambient, load dump). IC Role / Device Role / Timing Role: Primary 3.3V LDO regulator with reset supervision and watchdog monitoring of MCU firmware execution. Use Value: 72V input tolerance avoids external TVS; 68μA IQ extends stop-start battery life; HOLD enables ignition-triggered latching without relay. | Use Scenario: Supplies door module MCU, LIN transceiver, and LED drivers in vehicle interior lighting and lock control. IC Role / Device Role / Timing Role: Single-point power source with PFI-based battery voltage monitoring and RESET-driven safe shutdown. Use Value: PFO alerts system before deep discharge; 12.5ms RESET timeout guarantees clean MCU boot; TQFN-20 fits space-constrained door panels. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Telematics Control Unit (TCU) |
Use Scenario: Powers image sensor interface and ISP in rear-view camera module exposed to wide temperature swings. IC Role / Device Role / Timing Role: High-reliability 3.3V supply with watchdog supervision to detect frozen firmware and force recovery. Use Value: Windowed watchdog (via WDS0/WDS1) detects both stuck-high and stuck-low WDI faults; -40°C to +125°C rating ensures cold-soak startup. | Use Scenario: Provides regulated 3.3V rail for cellular modem, GNSS receiver, and secure MCU in vehicle connectivity gateway. IC Role / Device Role / Timing Role: Supervised power source with RESET and watchdog ensuring modem firmware integrity during OTA updates. Use Value: WD-DIS pin allows dynamic watchdog disable during critical update phases; 300mA output supports burst transmit current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage automotive regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPSD2+ | Identical pinout, specs, and features; differs only in AEC-Q100 qualification status (MAX6795TPSD2+/V+ is qualified, MAX6796TPSD2+ is not marked /V) | MAX6795TPSD2+/V+ is explicitly AEC-Q100 Grade 0 qualified; MAX6796TPSD2+ meets same electrical/thermal specs but lacks /V suffix | Select MAX6795TPSD2+/V+ for production automotive programs requiring formal qualification evidence |
| TLV70733PDQNR | Lower input range (up to 5.5V), no watchdog/reset, no HOLD, 200mA max, SOT-23-5 package | Suitable only for low-voltage post-regulation (e.g., infotainment USB peripherals), not primary 12V/24V automotive rails | Use only in non-safety-critical, low-input-voltage auxiliary rails where supervisory features are unnecessary |
Compared with MAX6795TPSD2+/V+, MAX6796TPSD2+ offers identical performance and footprint but requires customer-level AEC-Q100 validation; versus TLV70733PDQNR, it provides full 72V survivability, integrated supervision, and 300mA capability essential for primary automotive power domains.
Availability
MAX6796TPSD2+ is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, ADAS camera ECUs, and telematics gateways requiring stable component supply across extended temperature and high-reliability environments.
Supply support for MAX6796TPSD2+ 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 targets high-voltage automotive power systems, integrating micropower regulation, reset supervision, watchdog monitoring, and reverse-battery protection into compact TQFN packages for under-hood and chassis-mounted electronics.
FAQ
What output voltage does the MAX6796TPSD2+ provide?
The MAX6796TPSD2+ provides a factory-preset 3.3V output (T/S option), with ±2.5% accuracy over -40°C to +125°C. It is not adjustable - the SET pin is internally connected to GND for fixed operation. This 3.3V rail powers MCUs, sensors, and communication interfaces in automotive modules where stable low-noise supply is critical.
Does the MAX6796TPSD2+ support watchdog functionality?
Yes, the MAX6796TPSD2+ includes a configurable watchdog timer with fixed 280ms timeout (CSWT tied to OUT) or capacitor-adjustable period. It monitors the WDI pin for transitions and asserts RESET if no valid edge occurs within the timeout window. WD-DIS allows hardware disable, and the watchdog clears automatically upon RESET assertion - essential for firmware health monitoring in MAX6796TPSD2+ deployments.
What is the purpose of the HOLD pin on the MAX6796TPSD2+?
The HOLD pin on the MAX6796TPSD2+ enables self-holding behavior: when driven low after ENABLE activation, it keeps the regulator ON even if ENABLE returns low - simulating an ignition-key latched state. Releasing HOLD shuts down the output. This eliminates need for external latch circuitry in automotive power sequencing, directly supporting start-stop and accessory power architectures using MAX6796TPSD2+.
Can the MAX6796TPSD2+ withstand automotive load-dump conditions?
Yes, the MAX6796TPSD2+ operates from 5V to 72V input and is designed specifically for automotive load-dump immunity. Its 72V absolute maximum input rating (per Absolute Maximum Ratings table) and internal protection circuitry allow direct connection to 12V/24V battery rails without external TVS diodes in most cases - a key reliability feature confirmed in MAX6796TPSD2+ characterization across temperature and transient profiles.
What package type and thermal performance does the MAX6796TPSD2+ offer?
The MAX6796TPSD2+ uses a 20-pin, 5mm × 5mm TQFN-EP package with exposed pad soldered to PCB ground. It dissipates up to 2.7W continuously at +70°C ambient (derating 33.3mW/°C above), enabling reliable operation in high-temperature automotive locations. Thermal resistance θJA is optimized via the exposed pad, making MAX6796TPSD2+ suitable for under-hood applications without forced airflow.
MAX6796TPSD2+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.888V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6796TPSD2+ FAQ
1.How can I place an order for MAX6796TPSD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPSD2+ 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 MAX6796TPSD2+ reliable?
The price and inventory of MAX6796TPSD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPSD2+ is usually 5 days.
3.What payment methods are accepted for MAX6796TPSD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPSD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPSD2+?
MAX6796TPSD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPSD2+ 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 MAX6796TPSD2+?
For technical support, including MAX6796TPSD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPSD2+ requirements.
6.How does Aetrix verify that MAX6796TPSD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6796TPSD2+ 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 MAX6796TPSD2+ meets industry standards.
7.What is the process for return or replacement of MAX6796TPSD2+?
All MAX6796TPSD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPSD2+, 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 MAX6796TPSD2+ part is unused and in its original packaging.
Return procedure for MAX6796TPSD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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