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Analog Devices Inc./Maxim Integrated MAX6796TPMD2+T
- Part No.:
- MAX6796TPMD2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPMD2+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,319
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Product details
Overview
The MAX6796TPMD2+T from Maxim Integrated is a single-output, ultra-low-quiescent-current linear regulator with integrated supervisory functions (RESET, watchdog, power-fail comparator, and hold control), designed for automotive systems requiring high-voltage tolerance and robust fault management. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and provides a fixed 5V output with 92.5% reset threshold - used in engine control units (ECUs) and ADAS domain controllers where load-dump resilience and microprocessor supervision are critical.
For engineers reviewing the MAX6796TPMD2+T datasheet, MAX6796TPMD2+T pinout, MAX6796TPMD2+T application, or MAX6796TPMD2+T equivalent, key selection considerations include its AEC-Q100-qualified 20-pin TQFN package, fixed 12.5ms reset timeout (D2 suffix), 5V preset output, thermal/short-circuit/overvoltage protection, and compatibility with reverse-battery pFET gate drive via GATEP pin.
Technical Context
The MAX6796TPMD2+T implements a high-voltage linear regulation architecture with internal p-channel pass transistor, supporting 5V–72V input while maintaining 68μA quiescent current across -40°C to +125°C. Its supervisory block integrates a fixed-threshold (92.5% of VOUT) RESET generator with capacitor-adjustable or factory-set 12.5ms timeout (D2), a 280ms min watchdog timer (disableable via WD-DIS), and a 1.231V precision PFI comparator with 35µs propagation delay.
It features dual enable logic: ENABLE controls regulator startup, while HOLD enables self-holding behavior - once enabled, pulling HOLD low sustains regulation even after ENABLE returns low. The GATEP pin drives an external pFET for reverse-battery protection, eliminating series diode losses. Output overvoltage protection triggers at 105–110% of nominal VOUT with 5–10mA sink capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping. |
| Output Voltage | Fixed 5.0V ±2.5% - stable supply for MCU cores, CAN transceivers, and sensor interfaces. |
| Max Output Current | 300mA continuous - sufficient for powering multiple low-power ICs in compact ECU modules. |
| Quiescent Current | 68μA typical at VIN = 8V - enables always-on functionality in battery-sensitive automotive applications. |
| Reset Timeout | 12.5ms (D2 suffix) - ensures reliable microprocessor initialization after brownout recovery. |
| Dropout Voltage | 420mV typical at 100mA - maintains regulation during cold-cranking (VIN ≥ 6.5V for 5V output). |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive environments. |
Pinout & Package
The MAX6796TPMD2+T is housed in a thermally enhanced 20-pin TQFN-EP package (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) connected internally to GND for optimal heat dissipation (2.7W max). The package supports high ambient temperature operation in engine bay applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT | Main regulated 5V output; requires ≥10μF ceramic capacitor to GND for stability. |
| 3 | SET | Feedback node - tied to GND for fixed 5V output; connects to resistive divider for adjustable mode. |
| 4 | PFO | Open-drain power-fail output - asserts low when PFI falls below 1.231V (e.g., battery sag detection). |
| 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 12.5ms (D2); capacitor enables user-defined timeout. |
| 7 | GND | Analog/digital ground reference; EP must be soldered to PCB ground plane. |
| 8 | RESET | Active-low push-pull reset output - drives µP reset pin directly; asserts when VOUT < 4.625V (92.5% of 5V). |
| 11 | WDI | Watchdog input - requires edge transition every ≤280ms to prevent reset assertion. |
| 12 | HOLD | Active-low hold control - forces regulator ON even after ENABLE goes low; enables ignition-key self-hold circuits. |
| 16 | PFI | Power-fail comparator input - sets early warning threshold via external resistor divider (e.g., battery voltage monitor). |
| 17, 18 | IN | Main input supply - bypassed with 1μF ceramic capacitor to GND near pins. |
| 19 | GATEP | pFET gate driver - sinks current to turn on external p-channel MOSFET for reverse-battery protection. |
| 20 | ENABLE | Active-high enable - pulls up via internal 0.5μA current sink; driven by ignition signal or system controller. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby in always-on automotive modules without parasitic drain. |
| Integrated reverse-battery protection | GATEP pin drives external pFET - eliminates 0.3–0.7V diode drop, preserving efficiency and reducing heat. |
| Self-holding circuit support | HOLD pin allows ignition-switch-initiated latching without external latch ICs or discrete components. |
| Factory-configured reset timing | D2 suffix = 12.5ms fixed reset timeout - eliminates timing capacitor placement and tolerance concerns. |
| Robust fault protection | Thermal shutdown (+165°C), short-circuit current limit (480mA), and output overvoltage clamp (105–110%) ensure field reliability. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powers MCU, CAN transceiver, and analog front-end in gasoline/diesel engine control modules exposed to 72V load-dump events. IC Role / Device Role / Timing Role: Primary 5V regulator with RESET supervision and watchdog monitoring of safety-critical firmware execution. Use Value: 72V input range and thermal protection prevent shutdown during cranking; 68μA IQ extends battery life during vehicle sleep modes. | Use Scenario: Supplies vision processor, radar SoC, and sensor fusion MCU in forward camera or parking assist systems. IC Role / Device Role / Timing Role: Single-point-of-failure protected power source with PFI-based battery health monitoring and HOLD-enabled ignition sequencing. Use Value: GATEP-driven reverse-battery protection avoids diode losses in space-constrained ADAS ECUs; 12.5ms D2 reset ensures deterministic boot timing. |
| Body Control Module (BCM) | Infotainment Power Management |
Use Scenario: Regulates power for door module microcontrollers, LIN transceivers, and LED drivers in harsh under-dash environments. IC Role / Device Role / Timing Role: Supervised 5V rail with programmable power-fail warning (via PFI) and self-hold for accessory power retention. Use Value: HOLD/ENABLE interaction enables "last-gasp" memory save before full shutdown; -40°C to +125°C rating ensures operation in sealed enclosures. | Use Scenario: Provides clean 5V supply to audio DSP, display controller, and USB hub in head-unit designs with extended runtime requirements. IC Role / Device Role / Timing Role: High-PSRR (69dB @ 100Hz) linear regulator with RESET coordination for safe firmware update sequencing. Use Value: Low dropout (420mV @ 100mA) maintains regulation during 6.5V cold-crank; open-drain PFO signals battery low condition to host processor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator with supervisory functions applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPMD2+T | Identical electrical specs and pinout; differs only in tape-and-reel packaging (no /V automotive qualification marking). | Not AEC-Q100 qualified - suitable for non-automotive industrial or commercial applications requiring same performance. | Select MAX6795TPMD2+T only if AEC-Q100 compliance is not required; MAX6796TPMD2+T is mandatory for automotive production. |
| TLV70733PDQNR | Lower input range (2.5V–5.5V), no watchdog/RESET/PFI/GATEP functions, 200mA output, SOT-23-5 package. | Lacks automotive supervision features - usable only in low-voltage, non-safety-critical subsystems like interior lighting or HVAC sensors. | Not a functional substitute; only consider if system voltage is <6V and supervision is handled externally. |
Compared with MAX6795TPMD2+T, the MAX6796TPMD2+T adds AEC-Q100 qualification and automotive-grade traceability; compared with TLV70733PDQNR, it provides full high-voltage supervision, reverse-battery protection, and 300mA output - making it irreplaceable in demanding automotive power domains.
Availability
MAX6796TPMD2+T is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and body control modules requiring stable component supply across automotive production lifecycles, extended temperature operation, and AEC-Q100-compliant sourcing.
Supply support for MAX6796TPMD2+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 automotive power-supply supervision - integrating high-voltage linear regulation, watchdog timers, RESET generators, and reverse-battery protection into a single AEC-Q100-qualified device.
FAQ
What does the 'D2' suffix in MAX6796TPMD2+T indicate?
The 'D2' suffix in MAX6796TPMD2+T specifies a factory-programmed 12.5ms reset timeout period. This value is selected from the internal CSRT ramp current and threshold (1.218V) and eliminates the need for an external timing capacitor. It ensures consistent, production-tested reset duration critical for deterministic microprocessor boot sequences in automotive applications.
Is MAX6796TPMD2+T pin-compatible with other devices in the MAX6791–MAX6796 family?
Yes, MAX6796TPMD2+T shares identical 20-pin TQFN-EP pinout and footprint with all MAX6791–MAX6796 variants. However, pin functionality differs between single-output (MAX6795/MAX6796) and dual-output (MAX6791–MAX6794) versions - e.g., pins 13–15 are unused (N.C.) in MAX6796TPMD2+T but serve as OUT2/ENABLE2 in dual-output models. Always verify schematic connectivity per device variant.
Can MAX6796TPMD2+T be used with an adjustable output voltage?
Yes, MAX6796TPMD2+T supports adjustable output from 1.8V to 11V by connecting the SET pin to an external resistive divider between OUT and GND. Though the 'M' in TPMD2 denotes a 5V preset option, the internal feedback amplifier remains accessible. For adjustable use, disconnect SET from GND and configure R1/R2 per VOUT = 1.231V × (1 + R1/R2), ensuring stability with ≥10μF output capacitance.
Does MAX6796TPMD2+T include reverse-battery protection?
Yes, MAX6796TPMD2+T integrates reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. When battery polarity is reversed, the IC sinks current from GATEP to disable the pFET, blocking reverse current flow. This replaces lossy series diodes and maintains >95% efficiency - a key advantage over standard LDOs in automotive applications.
What is the purpose of the HOLD pin on MAX6796TPMD2+T?
The HOLD pin on MAX6796TPMD2+T enables self-holding circuitry: when pulled low after initial enable, it keeps the regulator active even if ENABLE returns low. This allows ignition-switch-initiated power-up that persists through key-off transitions - essential for retaining RAM state or completing shutdown routines. HOLD is internally pulled up to OUT via a 2µA current source, simplifying implementation.
MAX6796TPMD2+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:
- 4.375V, Adj
- Output:
- Push-Pull, Totem Pole
- 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)
MAX6796TPMD2+T FAQ
1.How can I place an order for MAX6796TPMD2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPMD2+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 MAX6796TPMD2+T reliable?
The price and inventory of MAX6796TPMD2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPMD2+T is usually 5 days.
3.What payment methods are accepted for MAX6796TPMD2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPMD2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPMD2+T?
MAX6796TPMD2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPMD2+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 MAX6796TPMD2+T?
For technical support, including MAX6796TPMD2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPMD2+T requirements.
6.How does Aetrix verify that MAX6796TPMD2+T is sourced from the original manufacturer or authorized distributors?
All MAX6796TPMD2+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 MAX6796TPMD2+T meets industry standards.
7.What is the process for return or replacement of MAX6796TPMD2+T?
All MAX6796TPMD2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPMD2+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 MAX6796TPMD2+T part is unused and in its original packaging.
Return procedure for MAX6796TPMD2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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