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Analog Devices Inc./Maxim Integrated MAX6796TPZD1+T
- Part No.:
- MAX6796TPZD1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPZD1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,915
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Product details
Overview
MAX6796TPZD1+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and provides a preset 5V output with 92.5% reset threshold - enabling robust operation during load-dump transients in engine control units.
For engineers reviewing the MAX6796TPZD1+T datasheet, MAX6796TPZD1+T pinout, MAX6796TPZD1+T application, or MAX6796TPZD1+T equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, capacitor-adjustable watchdog/reset timeout, HOLD-enabled self-holding circuitry, and thermal protection up to +125°C ambient.
Technical Context
The MAX6796TPZD1+T implements a single LDO regulator with internal pFET pass device and precision bandgap reference, supporting fixed 5V output (L option) with ±2.5% tolerance over temperature. Its supervisory block integrates a windowed watchdog timer (via WDS0/WDS1), active-low open-drain/push-pull RESET with programmable timeout (CSRT), and power-fail comparator (PFI/PFO) referenced to 1.231V.
Control logic includes ENABLE (active-high) and HOLD (active-low) inputs enabling ignition-key–driven self-holding behavior: once enabled, pulling HOLD low sustains regulation even after ENABLE returns low - eliminating external latching 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 clamping |
| Output Current | 300mA continuous - sufficient to power microcontrollers, CAN transceivers, and sensors in ECUs |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive applications |
| Dropout Voltage | 420mV at 100mA - ensures stable 5V output even at VIN = 5.42V during cold-crank |
| Reset Threshold | 4.625V (92.5% of 5V) - triggers reset before MCU brownout in supply sag conditions |
| Watchdog Timeout | 280ms fixed (CSWT tied to OUT) - detects firmware lockup in safety-critical subsystems |
| Operating Temp | −40°C to +125°C - fully specified for under-hood automotive environments |
Pinout & Package
MAX6796TPZD1+T is housed in a thermally enhanced 5mm × 5mm, 20-pin TQFN-EP package (exposed pad connected to GND), rated for 2.7W power dissipation and compatible with standard reflow profiles (260°C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (5V fixed); requires ≥10μF ceramic capacitor to GND for stability |
| 3 | SET | Feedback input; grounded for 5V preset mode, or connected to resistive divider for adjustable output |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V - used for early battery-low warning |
| 5 | CSWT | Watchdog timeout adjust; tied to OUT for 280ms fixed timeout or capacitor-grounded for adjustment |
| 6 | CSRT | Reset timeout adjust; tied to OUT for 3.125ms fixed timeout or capacitor-grounded for adjustment |
| 7 | GND | Analog/digital ground reference; must be connected to PCB ground plane via exposed pad |
| 8 | RESET | Active-low reset output; push-pull or open-drain configurable - drives µP reset pin directly |
| 11 | WDI | Watchdog input; requires edge transition within timeout period to prevent reset assertion |
| 12 | HOLD | Active-low hold enable; forces regulator ON after initial enable, enabling self-hold without external parts |
| 16 | PFI | Power-fail comparator input; accepts resistor divider to set custom undervoltage detection threshold |
| 17,18 | IN | Main input supply; bypassed with 1μF ceramic capacitor to GND near pins |
| 19 | GATEP | pFET gate drive; controls external reverse-battery protection MOSFET - eliminates series diode loss |
| 20 | ENABLE | Active-high enable; internally pulled down - driven by ignition-switched 12V signal in automotive systems |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ (68μA) | Enables permanent connection to vehicle battery without excessive parasitic drain |
| 72V Input Withstand | Eliminates need for external TVS or Zener clamping during ISO 7637-2 pulse 5a load dump |
| HOLD Self-Holding Logic | Allows ignition-key–initiated power-up with sustained regulation after key-off, simplifying ECU wake/sleep sequencing |
| Integrated Reverse-Battery Protection | GATEP output drives pFET to block reverse current - removes 0.3–0.7V diode drop and associated heat |
| AEC-Q100 Qualified | Validated for automotive use per stress test requirements including HTOL, TC, and UHAST |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN transceiver, and sensor interface circuits from 12V battery with load-dump immunity. IC Role / Device Role / Timing Role: Primary 5V LDO regulator with reset supervision and watchdog monitoring of MCU firmware execution. Use Value: 68μA quiescent current prevents battery drain during extended parking; 72V input rating avoids external protection components. | Use Scenario: Supplies door module microcontroller and LIN transceiver in always-on configuration with ignition-key wake-up. IC Role / Device Role / Timing Role: Single-supply regulator with HOLD-enabled self-hold circuitry and PFI-based battery voltage monitoring. Use Value: HOLD input eliminates external latch circuitry; PFO provides early low-battery warning to initiate graceful shutdown. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Controller |
Use Scenario: Regulates image sensor and ISP core voltage in rear-view camera module mounted near exhaust. IC Role / Device Role / Timing Role: High-temp-stable 5V regulator with thermal shutdown and watchdog supervision for functional safety compliance. Use Value: −40°C to +125°C operation ensures reliability in under-bumper mounting; watchdog detects ISP lockup before image corruption. | Use Scenario: Powers EPS motor controller MCU and gate drivers in high-current, vibration-prone steering column environment. IC Role / Device Role / Timing Role: Robust 5V supply with reverse-battery protection (GATEP-driven pFET) and reset supervision for ASIL-B compliance. Use Value: Integrated reverse-battery protection removes series diode, reducing voltage drop and thermal stress on PCB. |
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 |
|---|---|---|---|
| MAX6795TPZD1+T | Identical pinout and electrical specs; differs only in reset threshold (87.5% vs. 92.5%) and default CSRT/CSWT timing codes | Suitable where lower reset threshold is required to tolerate deeper supply sags before reset assertion | Select MAX6795TPZD1+T if system requires earlier reset assertion during brownout - otherwise MAX6796TPZD1+T preferred for tighter reset margin |
| TLE42764GV50 | 45μA IQ, 45V max input, no watchdog or HOLD function; fixed 5V output with 90% reset threshold | Lacks self-hold and watchdog - requires external circuitry for ignition-key latching and firmware monitoring | Choose TLE42764GV50 only for cost-sensitive, non-safety-critical applications where supervisory features are omitted |
Compared with MAX6795TPZD1+T, MAX6796TPZD1+T offers higher reset threshold for improved noise immunity; versus TLE42764GV50, it adds HOLD latching and watchdog - reducing BOM count and enhancing functional safety compliance in ASIL-B systems.
Availability
MAX6796TPZD1+T is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera ECUs, and electric power steering controllers requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6796TPZD1+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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets, emphasizing reliability, integration, and power efficiency.
The MAX6791–MAX6796 product line targets automotive power management with integrated supervision, delivering high-input-voltage regulation, ultra-low quiescent current, and functional safety features for ECU and ADAS applications.
FAQ
What output voltage does MAX6796TPZD1+T provide?
MAX6796TPZD1+T provides a fixed 5V output (L option) with ±2.5% tolerance over −40°C to +125°C. The "Z" in the part number denotes the 5V preset output; SET pin is grounded internally for this variant. Output remains regulated down to VIN = 5.42V due to 420mV dropout at 100mA.
How is the reset timeout period configured on MAX6796TPZD1+T?
The reset timeout period on MAX6796TPZD1+T is configured via the CSRT pin: tying CSRT to OUT selects a fixed 3.125ms timeout (D1 code), while connecting a capacitor from CSRT to GND allows user adjustment (e.g., 100nF yields ~50ms). The D1 suffix in MAX6796TPZD1+T confirms the 3.125ms factory setting.
Does MAX6796TPZD1+T support reverse-battery protection?
Yes, MAX6796TPZD1+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 the MOSFET, blocking current flow - eliminating the need for a series Schottky diode and its associated 0.3–0.7V forward drop and thermal loss.
What is the function of the HOLD pin on MAX6796TPZD1+T?
The HOLD pin on MAX6796TPZD1+T enables self-holding behavior: after ENABLE turns the regulator on, pulling HOLD low sustains regulation even if ENABLE later goes low - allowing ignition-key–initiated power-up with sustained operation after key removal. Releasing HOLD shuts down the output, enabling clean ECU sleep/wake sequencing.
Is MAX6796TPZD1+T qualified for automotive use?
Yes, MAX6796TPZD1+T is AEC-Q100 qualified (Grade 0: −40°C to +125°C) and designed specifically for automotive applications. It meets stringent requirements for thermal cycling, humidity, and electrical stress, and includes built-in thermal shutdown (+165°C), short-circuit protection, and output overvoltage protection - ensuring reliability in under-hood environments.
MAX6796TPZD1+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:
- 2.313V, Adj
- Output:
- Push-Pull, Totem Pole
- 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)
MAX6796TPZD1+T FAQ
1.How can I place an order for MAX6796TPZD1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPZD1+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 MAX6796TPZD1+T reliable?
The price and inventory of MAX6796TPZD1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPZD1+T is usually 5 days.
3.What payment methods are accepted for MAX6796TPZD1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPZD1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPZD1+T?
MAX6796TPZD1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPZD1+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 MAX6796TPZD1+T?
For technical support, including MAX6796TPZD1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPZD1+T requirements.
6.How does Aetrix verify that MAX6796TPZD1+T is sourced from the original manufacturer or authorized distributors?
All MAX6796TPZD1+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 MAX6796TPZD1+T meets industry standards.
7.What is the process for return or replacement of MAX6796TPZD1+T?
All MAX6796TPZD1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPZD1+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 MAX6796TPZD1+T part is unused and in its original packaging.
Return procedure for MAX6796TPZD1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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