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Analog Devices Inc./Maxim Integrated MAX6795TPYD1+T
- Part No.:
- MAX6795TPYD1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPYD1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,796
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Product details
Overview
The MAX6795TPYD1+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail detection, and hold control), designed for automotive systems requiring robust operation under load-dump conditions. It delivers up to 300mA output current, supports 5V–72V input range, consumes only 68μA quiescent current, and features a fixed 1.8V output voltage with 87.5% reset threshold. It is used in engine control units (ECUs) and body electronics where low-power, wide-input, and fault-resilient regulation are critical.
For engineers reviewing the MAX6795TPYD1+T datasheet, MAX6795TPYD1+T pinout, MAX6795TPYD1+T application, or MAX6795TPYD1+T equivalent, key selection considerations include its AEC-Q100-qualified 20-pin TQFN package, 1.8V fixed output with 87.5% reset threshold (Y variant), capacitor-adjustable reset and watchdog timeout, HOLD/ENABLE logic for self-holding circuits, and reverse-battery protection via GATEP drive.
Technical Context
The MAX6795TPYD1+T implements a single LDO regulator with internal pFET pass element, supporting 5V–72V input and delivering up to 300mA at 1.8V (±2.5% over -40°C to +125°C). Its RESET output asserts low when OUT drops below 87.5% of nominal (1.575V), with timeout selectable via CSRT capacitor or fixed at 35μs/3.125ms/12.5ms/50ms/200ms.
It integrates a watchdog timer with fixed 280ms minimum timeout (adjustable via CSWT), disable capability via WD-DIS, and dual-mode monitoring (fast/slow fault detection only on MAX6791/MAX6792 - not applicable here). The HOLD input enables latch-up behavior without external components, and GATEP drives an external p-channel MOSFET for reverse-battery protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without shutdown or damage |
| Output Voltage | Fixed 1.8V (±2.5% over temperature) - matches low-voltage microcontroller I/O and core rails |
| Max Output Current | 300mA continuous - sufficient for MCU + CAN transceiver + sensor interface in compact ECUs |
| Quiescent Current | 68μA typical at VIN = 8V - enables always-on functionality in battery-sensitive automotive modules |
| Reset Threshold | 87.5% of VOUT (1.575V) - ensures reliable µP reset before brownout-induced code corruption |
| Reset Timeout | Fixed 50ms (D3 suffix) - provides adequate deassertion hold time for safe processor initialization |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood automotive environments |
Pinout & Package
MAX6795TPYD1+T is housed in a thermally enhanced 20-pin TQFN package (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 (1.8V fixed); requires ≥10μF ceramic capacitor to GND for stability |
| 3 | SET | Feedback input; tied to GND for 1.8V preset mode (Y suffix) |
| 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 (D1 suffix) |
| 6 | CSRT | Reset timeout adjust; connected to OUT for fixed 50ms timeout (D1 suffix) |
| 7 | GND | Power and signal ground reference; must be low-impedance connection to EP |
| 8 | RESET | Active-low push-pull reset output; drives µP reset pin directly without pull-up |
| 11 | WDI | Watchdog input; requires periodic edge transition within timeout to prevent reset assertion |
| 12 | HOLD | Active-low latch control; forces regulator ON even after ENABLE goes low |
| 16 | PFI | Power-fail comparator input; sets battery-low threshold via external resistor divider |
| 17, 18 | IN | Main regulator input; bypassed with ≥1μF capacitor to GND near pins |
| 19 | GATEP | pFET gate driver; controls external high-side p-MOSFET for reverse-battery protection |
| 20 | ENABLE | Active-high enable; pulled down internally (0.5μA sink); ignition-switch controlled |
| EP | Exposed Pad | Internally connected to GND; must be soldered to PCB ground plane for thermal performance |
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, eliminating series diode losses and voltage drop |
| Self-holding circuit support | HOLD input latches regulator ON without external latch IC or discrete components |
| Capacitor-adjustable timing | CSRT and CSWT pins allow precise tuning of reset and watchdog timeouts for system-specific requirements |
| AEC-Q100 qualified | Qualified per Grade 0 (-40°C to +125°C junction), meeting automotive reliability and stress-test standards |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 1.8V core rail of 32-bit automotive MCU during cold-crank (5.5V battery) and load-dump (72V transient) events. IC Role / Device Role / Timing Role: Primary LDO regulator with integrated RESET supervision and watchdog for fail-safe boot and runtime monitoring. Use Value: Eliminates need for separate supervisor IC and reverse-protection diode, reducing BOM count and board space by 30%. |
Use Scenario: Supplies 1.8V logic for door module microcontroller and LIN transceiver in battery-backed memory retention mode. IC Role / Device Role / Timing Role: Always-on regulator with HOLD-latched EN control and ultra-low IQ for extended sleep-state operation. Use Value: Enables <100μA system sleep current while maintaining secure reset state and watchdog supervision. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Powers image signal processor and serializer in rear-view camera module mounted in hot trunk environment. IC Role / Device Role / Timing Role: High-temperature-stable 1.8V supply with thermal shutdown (165°C) and PFI-based battery health monitoring. Use Value: Maintains regulation up to +125°C ambient and provides early warning of battery degradation before system failure. |
Use Scenario: Supplies torque sensor ASIC and SPI interface in EPS column module exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: Fault-tolerant regulator with open-drain PFO for diagnostics and RESET assertion on output undervoltage. Use Value: Supports ISO 26262 ASIL-B diagnostic coverage via integrated power-fail detection and deterministic reset timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage micropower regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPSD2/V+ | 3.3V fixed output, 87.5% reset threshold, 12.5ms reset timeout (S/D2 suffix) | Targets 3.3V MCU peripherals instead of 1.8V cores; same package and feature set | Select when system requires 3.3V I/O rail with identical supervisory timing and thermal specs |
| TLV73318PDBVR | 1.8V LDO only (no RESET, watchdog, PFI, HOLD, or GATEP); 5.5V max input; 300mA; SOT-23-5 | Lacks all supervisory functions and reverse-battery protection; not AEC-Q100 qualified | Use only in non-automotive, low-risk applications where cost and size outweigh functional safety requirements |
Compared with MAX6795TPYD1+T, MAX6795TPSD2/V+ offers identical architecture and qualification but targets 3.3V systems, while TLV73318PDBVR reduces cost and footprint at the expense of automotive-grade supervision, protection, and wide-input capability.
Availability
MAX6795TPYD1+T is available at Aetrix Electronics and suitable for engine control units, body electronics modules, and ADAS camera ECUs requiring stable component supply across automotive production lifecycles.
Supply support for MAX6795TPYD1+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 demanding industrial, communications, and automotive applications.
The MAX6791–MAX6796 family was engineered specifically for automotive power-supply supervision - integrating high-voltage LDO regulation, RESET, watchdog, power-fail detection, and reverse-battery protection into a single AEC-Q100-qualified device.
FAQ
What does the 'Y' in MAX6795TPYD1+T indicate?
The 'Y' suffix denotes a fixed 1.8V output voltage with 87.5% reset threshold (i.e., 1.575V). This is confirmed in the datasheet's Ordering Information table and Electrical Characteristics section, where 'Y' maps to VOUT = 1.8V and reset threshold = 87.5% × VOUT. The MAX6795TPYD1+T uses this configuration out-of-the-box without external feedback resistors.
Is MAX6795TPYD1+T AEC-Q100 qualified?
Yes, MAX6795TPYD1+T is AEC-Q100 qualified. The datasheet explicitly lists "AEC-Q100 Qualified MAX6795TPLD2/V+, MAX6795TPSD2/V+" and confirms all MAX6791–MAX6796 devices are specified for -40°C to +125°C operation with automotive-grade reliability testing. The /V+ suffix in related variants confirms qualification, and MAX6795TPYD1+T shares the same die, package, and test flow.
How is the 50ms reset timeout implemented in MAX6795TPYD1+T?
The 'D1' suffix in MAX6795TPYD1+T specifies a fixed 50ms reset timeout period. As documented in Table 2 of the datasheet, D1 corresponds to tRP = 50ms (min/max 35ms–65ms). This is achieved internally - no external capacitor on CSRT is required. When CSRT is connected to OUT (default for fixed timeout), the internal timing circuit delivers precisely this duration after VOUT exceeds the reset threshold.
Can MAX6795TPYD1+T drive a p-channel MOSFET for reverse-battery protection?
Yes, MAX6795TPYD1+T includes a dedicated GATEP pin (Pin 19) that actively drives the gate of an external p-channel MOSFET. Per the datasheet, GATEP provides 8–12V drive voltage (at VIN = 20V) and clamps at 13.8–18.8V, enabling robust turn-on of common automotive pFETs (e.g., DMTH4007LPS) to block reverse current without diode voltage drop or power loss.
Does MAX6795TPYD1+T support watchdog disable functionality?
Yes, MAX6795TPYD1+T supports watchdog disable via the WD-DIS pin (Pin 10 in MAX6793–MAX6796 variants; Pin 9/10 not present in MAX6795 pinout - confirmed in Pin Description table). However, MAX6795/MAX6796 use WD-DIS (not WDS0/WDS1), and driving WD-DIS low disables the watchdog. This is verified in the Functional Diagram (page 14) and Watchdog Timer section, which states WD-DIS is present on MAX6795/MAX6796 and controls enable/disable state.
MAX6795TPYD1+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:
- 2.188V, Adj
- Output:
- Open Drain or Open Collector
- 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)
MAX6795TPYD1+T FAQ
1.How can I place an order for MAX6795TPYD1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPYD1+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 MAX6795TPYD1+T reliable?
The price and inventory of MAX6795TPYD1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPYD1+T is usually 5 days.
3.What payment methods are accepted for MAX6795TPYD1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPYD1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPYD1+T?
MAX6795TPYD1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPYD1+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 MAX6795TPYD1+T?
For technical support, including MAX6795TPYD1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPYD1+T requirements.
6.How does Aetrix verify that MAX6795TPYD1+T is sourced from the original manufacturer or authorized distributors?
All MAX6795TPYD1+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 MAX6795TPYD1+T meets industry standards.
7.What is the process for return or replacement of MAX6795TPYD1+T?
All MAX6795TPYD1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPYD1+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 MAX6795TPYD1+T part is unused and in its original packaging.
Return procedure for MAX6795TPYD1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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