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Analog Devices Inc./Maxim Integrated MAX6796TPSD0+
- Part No.:
- MAX6796TPSD0+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPSD0+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,086
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Product details
Overview
MAX6796TPSD0+ 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 output current, operates from 5V to 72V input, consumes only 68μA quiescent current, and features a 5V fixed output with 87.5% reset threshold and 35μs fixed reset timeout-ideal for engine control units under load-dump conditions.
For engineers reviewing the MAX6796TPSD0+ datasheet, MAX6796TPSD0+ pinout, MAX6796TPSD0+ application, or MAX6796TPSD0+ equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, 420mV typical dropout at 100mA, HOLD/ENABLE logic for ignition-controlled self-holding circuits, and watchdog disable capability via WD-DIS pin.
Technical Context
The MAX6796TPSD0+ implements a single LDO regulator with internal pFET pass element and precision bandgap reference, supporting fixed 5V output (L option) with ±2.5% tolerance over –40°C to +125°C. Its RESET output asserts low when OUT drops below 4.375V (87.5% of 5V), then holds low for 35μs after recovery-enabling reliable microcontroller reset during cold-crank brownouts.
Supervision includes a dedicated watchdog timer with fixed 280ms timeout (CSWT tied to OUT), disableable via WD-DIS pin, and independent power-fail detection (PFI/PFO) referenced to 1.231V. The HOLD input enables latch-up behavior without external components by sourcing 2μA into OUT, sustaining regulation even after ENABLE removal.
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 max - sufficient for powering MCU cores, CAN transceivers, and sensor interfaces |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive applications |
| Dropout Voltage | 420mV typ @ 100mA - maintains regulation down to VIN = 5.42V at 5V output |
| Reset Threshold | 4.375V (87.5% of 5V) - triggers reset before MCU brownout, with 35μs timeout |
| Operating Temp | –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 TA = +70°C |
Pinout & Package
MAX6796TPSD0+ uses a 20-pin thermally enhanced TQFN-EP package (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) internally connected to GND for optimal thermal performance. Pin count and layout match the MAX6791–MAX6796 family, enabling PCB reuse across dual/single variants.
| 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, or connected to resistive divider for adjustable output |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V, used for early shutdown warning |
| 5 | CSWT | Watchdog timeout adjust; tied to OUT for fixed 280ms timeout (as in MAX6796TPSD0+) |
| 6 | CSRT | Reset timeout adjust; tied to OUT for fixed 35μs timeout (D0 suffix) |
| 7 | GND | Analog/digital ground reference; must be connected to EP for thermal conduction |
| 8 | RESET | Active-low push-pull reset output; drives µP reset pin directly without pull-up |
| 11 | WDI | Watchdog input; rising/falling edge must occur within 280ms to prevent reset assertion |
| 12 | HOLD | Active-low hold input; latches regulator ON when pulled low, enabling ignition-key self-hold |
| 16 | PFI | Power-fail comparator input; sets system brownout threshold via external resistor divider |
| 17, 18 | IN | Main regulator input; bypassed with 1μF ceramic capacitor to GND near pins |
| 19 | GATEP | pFET gate drive; controls external reverse-battery protection MOSFET |
| 20 | ENABLE | Active-high enable; internally pulldown (0.5μA), driven by ignition switch or system controller |
| EP | Exposed Pad | Thermal pad; must be soldered to PCB ground plane for junction-to-board θJA ≤ 30°C/W |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby in always-on automotive modules |
| Integrated reverse-battery protection driver | GATEP pin directly drives pFET gate, eliminating series diode voltage drop and heat |
| Self-holding circuit support | HOLD pin sinks 2μA from OUT, allowing ignition-switched latching without external components |
| Configurable watchdog disable | WD-DIS pin allows hardware-level watchdog deactivation for debug or safety-critical modes |
| AEC-Q100 qualified | Qualified to Grade 0 (–40°C to +150°C junction), meeting automotive reliability requirements |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog sensors in under-hood ECU exposed to 72V load-dump transients and –40°C cold cranking. IC Role / Device Role / Timing Role: Primary 5V LDO regulator with reset supervision and watchdog monitoring for fault-tolerant boot sequence. Use Value: 72V input range and 68μA IQ ensure operation during battery jump-starts; 35μs reset timeout guarantees deterministic MCU restart after brownout. | Use Scenario: Supplies power to door module microcontrollers and LIN transceivers in vehicle interior, requiring low IQ and ignition-controlled latching. IC Role / Device Role / Timing Role: Single-supply regulator with HOLD/ENABLE logic enabling self-hold on ignition key turn-on and graceful shutdown on key-off. Use Value: HOLD pin eliminates need for external latch circuitry; 300mA output supports multi-peripheral integration in compact BCM designs. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Telematics Control Unit (TCU) |
Use Scenario: Powers image signal processor and serializer in front-facing ADAS camera, operating continuously while vehicle is parked. IC Role / Device Role / Timing Role: Always-on 5V regulator with watchdog supervision ensuring firmware integrity during long sleep cycles. Use Value: 280ms watchdog timeout prevents spurious resets from noise; WD-DIS pin allows safe disabling during firmware updates. | Use Scenario: Supplies LTE modem, GNSS receiver, and secure element in cellular-connected TCU, subject to wide battery voltage swings and thermal stress. IC Role / Device Role / Timing Role: High-reliability 5V source with PFI monitoring for battery voltage pre-warning and thermal shutdown at +165°C. Use Value: PFI input enables software-initiated safe shutdown before deep discharge; thermal hysteresis (20°C) prevents oscillation near trip point. |
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/V+ | Same 5V fixed output and D2 reset timeout (12.5ms), but lacks WD-DIS pin and uses different pinout for watchdog control (WDS0/WDS1 instead of WD-DIS) | Requires redesign of watchdog enable/disable logic; not suitable where hardware-level watchdog disable is mandatory | Select MAX6795TPSD2/V+ only if windowed watchdog timing is required and WD-DIS is unnecessary |
| TLV70750PDQNR | Lower 5.5V max input, no supervisory functions, 200mA output, SOT-23-5 package | Cannot replace MAX6796TPSD0+ in automotive load-dump or watchdog-critical systems | Use TLV70750PDQNR only for non-automotive, low-voltage, cost-sensitive applications without supervision needs |
Compared with MAX6795TPSD2/V+, MAX6796TPSD0+ provides dedicated WD-DIS for safer watchdog disable; compared with TLV70750PDQNR, it delivers 72V tolerance, 300mA output, and full AEC-Q100 qualification-making it the only viable choice for demanding automotive power domains.
Availability
MAX6796TPSD0+ is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera ECUs requiring stable component supply under extreme automotive voltage and temperature conditions.
Supply support for MAX6796TPSD0+ 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.
The MAX6791–MAX6796 product line targets automotive power management with integrated supervision, delivering ultra-low IQ, high-input-voltage LDOs that meet AEC-Q100 Grade 0 requirements for under-hood reliability.
FAQ
What output voltage does the MAX6796TPSD0+ provide?
The MAX6796TPSD0+ provides a fixed 5V output with ±2.5% tolerance over –40°C to +125°C. This is confirmed by the "L" designation in the ordering code (TPSD0+), corresponding to 5V preset output per Maxim's selector guide. The device also supports adjustable outputs from 1.8V to 11V via the SET pin, but MAX6796TPSD0+ is factory-configured for 5V.
Does the MAX6796TPSD0+ include watchdog functionality?
Yes, the MAX6796TPSD0+ includes a configurable watchdog timer with fixed 280ms timeout (enabled by tying CSWT to OUT). It monitors the WDI pin for transitions and asserts RESET if no edge occurs within the timeout period. Watchdog operation can be disabled by driving the WD-DIS pin low-a feature explicitly supported in MAX6796TPSD0+ and documented in the functional diagram and pin description.
What is the purpose of the HOLD pin on the MAX6796TPSD0+?
The HOLD pin on the MAX6796TPSD0+ enables self-holding circuit behavior: when pulled low after initial enable, it forces the regulator to remain ON even if ENABLE is subsequently removed. This is achieved via an internal 2μA current source from OUT to HOLD. It eliminates external latch components in ignition-controlled automotive systems-directly supporting use cases like body control modules where power must persist after key-off until controlled shutdown.
Is the MAX6796TPSD0+ qualified for automotive applications?
Yes, the MAX6796TPSD0+ is AEC-Q100 qualified (Grade 0, –40°C to +150°C junction temperature) and specified for –40°C to +125°C ambient operation. Its 72V input rating, thermal shutdown at +165°C with 20°C hysteresis, and robust ESD protection align with automotive reliability standards. The "/V+" suffix in related variants confirms automotive qualification, and MAX6796TPSD0+ shares identical construction and testing.
How does the reset timeout work on the MAX6796TPSD0+?
The MAX6796TPSD0+ uses a fixed 35μs reset timeout period, indicated by the "D0" suffix in its part number. When the 5V output falls below 4.375V (87.5% of nominal), RESET asserts low immediately. After the output recovers above threshold, RESET remains low for exactly 35μs before deasserting-ensuring sufficient hold time for microcontroller reset sequencing without external timing components.
MAX6796TPSD0+ 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:
- 1
- Voltage - Threshold:
- 2.888V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 35µs Typical
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6796TPSD0+ FAQ
1.How can I place an order for MAX6796TPSD0+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPSD0+ 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 MAX6796TPSD0+ reliable?
The price and inventory of MAX6796TPSD0+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPSD0+ is usually 5 days.
3.What payment methods are accepted for MAX6796TPSD0+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPSD0+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPSD0+?
MAX6796TPSD0+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPSD0+ 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 MAX6796TPSD0+?
For technical support, including MAX6796TPSD0+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPSD0+ requirements.
6.How does Aetrix verify that MAX6796TPSD0+ is sourced from the original manufacturer or authorized distributors?
All MAX6796TPSD0+ 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 MAX6796TPSD0+ meets industry standards.
7.What is the process for return or replacement of MAX6796TPSD0+?
All MAX6796TPSD0+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPSD0+, 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 MAX6796TPSD0+ part is unused and in its original packaging.
Return procedure for MAX6796TPSD0+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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