My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6795TPSD4+T
- Part No.:
- MAX6795TPSD4+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPSD4+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,331
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6795TPSD4+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions-including reset, watchdog timer, power-fail detection, and hold control-designed for automotive systems. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and provides a preset 3.3V output with 87.5% reset threshold and 200ms reset timeout. It is used in engine control units (ECUs) and body control modules where load-dump resilience and low-power supervision are critical.
For engineers reviewing the MAX6795TPSD4+T datasheet, MAX6795TPSD4+T pinout, MAX6795TPSD4+T application, or MAX6795TPSD4+T equivalent, key selection considerations include its AEC-Q100-qualified 20-pin TQFN package, fixed 3.3V output with 87.5% reset threshold, capacitor-adjustable watchdog timeout, HOLD/ENABLE logic for self-holding ignition circuits, and thermal/short-circuit protection across –40°C to +125°C.
Technical Context
The MAX6795TPSD4+T implements a single high-side pFET linear regulator with dropout voltage as low as 1200mV at 300mA (VIN = 8V), paired with an independent supervisory block featuring dual-mode watchdog (fast/slow fault detection disabled in this variant), open-drain RESET output, and PFI/PFO comparator for battery monitoring. Its HOLD input enables latch-up behavior without external components by sourcing 2µA internally to OUT.
Unlike dual-output variants (e.g., MAX6791–MAX6794), the MAX6795TPSD4+T omits ENABLE2 and OUT2 pins, consolidating control to ENABLE and HOLD while retaining full CSRT/CSWT capacitor-adjustable timing, SET feedback for optional adjustment, and GATEP-driven reverse-battery protection via external p-MOSFET.
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 3.3V ±2.5% - factory-trimmed; no external resistor required |
| Max Output Current | 300mA continuous - supports microcontroller core + peripheral rail in compact ECUs |
| Quiescent Current | 68μA typical - enables always-on functionality in vehicle sleep modes |
| Reset Threshold | 87.5% of VOUT (2.888V min at 3.3V) - ensures reliable brownout detection before MCU malfunction |
| Reset Timeout | 200ms (D4 option) - holds MCU in reset long enough for stable power recovery after transient |
| Watchdog Timeout | 280ms fixed (CSWT = OUT) - detects firmware lockup in safety-critical automotive software |
| Operating Temp | –40°C to +125°C - fully specified for under-hood deployment per AEC-Q100 Grade 0 |
Pinout & Package
MAX6795TPSD4+T is housed in a thermally enhanced 20-pin TQFN-EP (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) connected internally to GND. The package dissipates up to 2.7W and supports operation at high ambient temperatures with minimal heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (3.3V); requires ≥10μF ceramic capacitor to GND for stability |
| 3 | SET | Feedback node; tied to GND for fixed 3.3V mode; connects to resistive divider for adjustable output |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V (e.g., battery sag) |
| 5 | CSWT | Watchdog timeout adjust; connected to OUT for fixed 280ms timeout (as in MAX6795TPSD4+T) |
| 6 | CSRT | Reset timeout adjust; connected to OUT for fixed 200ms timeout (D4 code) |
| 7 | GND | Power and signal ground; EP must be soldered to PCB ground plane for thermal performance |
| 8 | RESET | Active-low open-drain reset output; drives MCU reset pin; pulled up externally |
| 11 | WDI | Watchdog input; requires periodic edge transition (e.g., from MCU GPIO) to prevent reset assertion |
| 12 | HOLD | Active-low hold enable; latches regulator ON even after ENABLE goes low; internally pulled to OUT |
| 16 | PFI | Power-fail comparator input; sets custom brownout threshold via resistive divider to IN/GND |
| 17,18 | IN | Main input (5V–72V); bypassed with 1μF ceramic capacitor to GND near pins |
| 19 | GATEP | p-MOSFET gate driver; enables reverse-battery protection without series diode loss |
| 20 | ENABLE | Active-high enable; internal 0.5μA pulldown allows direct connection to ignition-switched 12V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby life in always-on automotive modules |
| Integrated HOLD function | Eliminates need for external latch circuitry in ignition-controlled ECU power sequencing |
| Reverse-battery protection drive | GATEP output controls external p-FET to block –14V reverse polarity without 0.3V diode drop |
| AEC-Q100 qualified | Qualified to Grade 0 (–40°C to +125°C) for under-hood automotive applications |
| Thermal & short-circuit protection | Auto-shutdown at +165°C with 20°C hysteresis; 480mA short-circuit current limit prevents damage |
| Capacitor-adjustable timing | CSRT/CSWT pins support precise tuning of reset/watchdog timeouts without trimming resistors |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 3.3V microcontroller core and CAN transceiver in gasoline/diesel engine management system exposed to 72V load-dump events. IC Role / Device Role / Timing Role: Primary 3.3V LDO regulator with integrated reset supervision and watchdog; ensures deterministic MCU boot and runtime fault recovery. Use Value: 68μA IQ extends stop-start battery life; 72V input range eliminates need for upstream TVS; HOLD enables ignition-key-triggered latching without external logic. |
Use Scenario: Supplies 3.3V rail to door module MCU and LIN transceiver in harsh cabin environment with wide temperature swings. IC Role / Device Role / Timing Role: Single-supply supervisor-regulator combining power delivery, brownout detection (via PFI), and fail-safe reset assertion. Use Value: PFI comparator monitors 12V battery via resistor divider for early low-voltage warning; 200ms D4 reset timeout prevents spurious resets during alternator ripple. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Controller |
Use Scenario: Powers image signal processor and serializer in rear-view camera module mounted near exhaust manifold. IC Role / Device Role / Timing Role: High-temp-stable 3.3V regulator with thermal shutdown and watchdog to detect ISP firmware hang. Use Value: 125°C rating and 2.7W dissipation capability allow direct mounting on compact PCB; WDI interface enables software-triggered health checks. |
Use Scenario: Supplies safety-critical MCU in EPS controller requiring ASIL-B compliant power supervision. IC Role / Device Role / Timing Role: Supervisory LDO providing monitored 3.3V power with dual-level fault response: immediate reset on brownout, delayed reset on watchdog timeout. Use Value: Independent RESET and PFO outputs support redundant fault signaling to safety monitor; AEC-Q100 qualification meets ISO 26262 hardware requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage supervisory regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPLD2/V+ | Same 3.3V output but 12.5ms reset timeout (D2) and AEC-Q100 automotive qualification (/V+) | Suitable for systems requiring faster reset release (e.g., infotainment boot sequencing) | Select when shorter reset hold time is needed and AEC-Q100 compliance is mandatory |
| TLV70733PDQNR | Lower IQ (25μA), 5.5V max input, no watchdog/reset supervision, SOT-23-5 package | Limited to low-voltage, non-automotive applications without supervision needs | Choose only for cost-sensitive, non-automotive 3.3V point-of-load use with <6V supply |
Compared with MAX6795TPLD2/V+, the MAX6795TPSD4+T offers longer reset assertion for robust brownout recovery but lacks formal AEC-Q100 marking; versus TLV70733PDQNR, it delivers 72V resilience, integrated supervision, and automotive-grade thermal performance-making it irreplaceable in under-hood ECU designs.
Availability
MAX6795TPSD4+T is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera ECUs, and electric power steering controllers requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX6795TPSD4+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, automotive, and communications applications.
The MAX6791–MAX6796 family was developed specifically for automotive power management, integrating high-input-voltage regulation with comprehensive supervision (reset, watchdog, PFI, HOLD) in a single AEC-Q100-capable package to reduce system BOM count and improve reliability.
FAQ
What output voltage does the MAX6795TPSD4+T deliver?
The MAX6795TPSD4+T delivers a factory-trimmed fixed 3.3V output with ±2.5% tolerance over temperature and load. This is confirmed by the "T" prefix in the part number (per Maxim's ordering guide: T = 3.3V), and electrical characteristics show VOUT = 3.201V to 3.399V at 300mA and –40°C to +125°C. No external resistors are needed for this configuration.
How is the reset timeout period configured on the MAX6795TPSD4+T?
The MAX6795TPSD4+T uses the "D4" suffix to indicate a 200ms reset timeout period. Internally, this is implemented by connecting the CSRT pin to the OUT pin (as shown in the functional diagram), enabling the fixed timeout option. The datasheet specifies D4 corresponds to 140ms (min) / 200ms (typ) / 260ms (max), verified across –40°C to +125°C.
Does the MAX6795TPSD4+T support adjustable output voltage?
Yes, the MAX6795TPSD4+T supports adjustable output from 1.8V to 11V via the SET pin. Though shipped with fixed 3.3V output (T-code), the device retains full adjustability: disconnecting SET from GND and connecting it to an external resistor divider between OUT and GND reconfigures the output. This flexibility is documented in the Electrical Characteristics table and Typical Application Circuit.
What is the purpose of the HOLD pin on the MAX6795TPSD4+T?
The HOLD pin on the MAX6795TPSD4+T enables self-holding behavior: when driven low after initial power-up, it keeps the regulator enabled even if ENABLE is subsequently pulled low-ideal for ignition-switched automotive systems. HOLD is internally pulled up to OUT with 2µA, so leaving it unconnected or tying it to OUT makes ENABLE function as a standard ON/OFF switch.
Is the MAX6795TPSD4+T AEC-Q100 qualified?
The MAX6795TPSD4+T is not explicitly marked with /V+ in its part number and is not listed in Maxim's AEC-Q100-qualified variants (e.g., MAX6795TPSD2/V+). However, it shares identical die, 20-pin TQFN package, and –40°C to +125°C operating range with AEC-Q100 parts, and all electrical parameters are fully specified across that range. For formal compliance, MAX6795TPSD2/V+ is the certified alternative.
MAX6795TPSD4+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:
- 2.888V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPSD4+T FAQ
1.How can I place an order for MAX6795TPSD4+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPSD4+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 MAX6795TPSD4+T reliable?
The price and inventory of MAX6795TPSD4+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPSD4+T is usually 5 days.
3.What payment methods are accepted for MAX6795TPSD4+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPSD4+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPSD4+T?
MAX6795TPSD4+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPSD4+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 MAX6795TPSD4+T?
For technical support, including MAX6795TPSD4+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPSD4+T requirements.
6.How does Aetrix verify that MAX6795TPSD4+T is sourced from the original manufacturer or authorized distributors?
All MAX6795TPSD4+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 MAX6795TPSD4+T meets industry standards.
7.What is the process for return or replacement of MAX6795TPSD4+T?
All MAX6795TPSD4+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPSD4+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 MAX6795TPSD4+T part is unused and in its original packaging.
Return procedure for MAX6795TPSD4+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6795TPSD4+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
