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Analog Devices Inc./Maxim Integrated MAX17692AATC+T
- Part No.:
- MAX17692AATC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX17692AATC+T.pdf
- Description:
- IC REG FLYBACK 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,961
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Product details
Overview
MAX17692AATC+T from Maxim Integrated is a 4.2V–60V no-opto isolated flyback converter with integrated 76V/205mΩ nMOSFET, fixed-frequency peak-current-mode control, and primary-side output voltage regulation. It delivers up to 3.5W output power, supports 100kHz–350kHz programmable switching frequency, and operates from –40°C to +125°C ambient. It enables compact isolated supplies for PLC I/O modules and IGBT gate drive applications.
For engineers reviewing the MAX17692AATC+T datasheet, MAX17692AATC+T pinout, MAX17692AATC+T application, or MAX17692AATC+T equivalent, key selection considerations include its no-opto regulation architecture, OVI protection (MAX17692A only), internal loop compensation, temperature-compensated diode forward-voltage sensing, and TDFN-EP 3mm × 3mm package with exposed pad.
Technical Context
The MAX17692AATC+T implements primary-side sensing by sampling the reflected flyback waveform at the LX node during secondary rectifier conduction, eliminating optocoupler and secondary error amplifier. Its internal 76V nMOSFET switch features 205mΩ typical RDS(ON), and peak current limit is set at 1.2A (typ) with hiccup-mode overcurrent protection.
It uses fixed-frequency peak-current-mode control with programmable RT-based oscillator (100–350kHz), external clock synchronization via SYNC/DITHER pin, and ±4%–±12% spread-spectrum dithering. The EN/UVLO threshold is 1.215V (rising), and OVI protection triggers at 1.215V on the dedicated OVI pin - a feature exclusive to the MAX17692A variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2V to 60V - supports wide industrial input rails including 24V, 36V, and 48V systems without external pre-regulation. |
| Integrated Switch | 76V, 205mΩ nMOSFET - enables self-contained flyback design up to ~3.5W output with minimal external components. |
| Switching Frequency | 100kHz to 350kHz (programmable via RT resistor) - balances EMI, transformer size, and efficiency across load conditions. |
| OVI Protection | Dedicated OVI pin with 1.215V threshold (MAX17692A only) - provides precise input overvoltage shutdown without external comparator. |
| Soft-Start Time | Default 5ms (typ), programmable >5ms via SS capacitor - limits inrush current and prevents output overshoot during startup. |
| Thermal Protection | 160°C junction shutdown with 10°C hysteresis - ensures reliable operation under sustained overload or poor heatsinking. |
| Operating Temperature | –40°C to +125°C ambient - qualified for harsh industrial environments including factory automation and telecom infrastructure. |
Pinout & Package
MAX17692AATC+T is housed in a thermally enhanced 12-pin TDFN-EP package (3mm × 3mm, 0.5mm pitch) with exposed pad connected to primary-side GND for improved thermal dissipation. Junction-to-ambient thermal resistance is 41°C/W on multilayer PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply reference | Connects directly to primary-side input rail (4.2–60V); serves as reference for FB feedback network. |
| GND | Primary-side ground | Reference for all internal circuits; must be tied to exposed pad and low-impedance primary ground plane. |
| VCC | LDO output | 5.77V regulated supply for internal circuitry; requires ≥2.2µF ceramic bypass capacitor to GND. |
| SYNC/DITHER | Frequency control interface | Configurable for external clock sync or ±4–12% spread-spectrum dithering; tie to GND if unused. |
| RT | Oscillator programming | Resistor-to-GND sets switching frequency (100–350kHz); open-circuit defaults to 200kHz. |
| TC/VCM | Temperature compensation | Programs diode VF temperature coefficient (–1 to –2mV/°C) and selects internal common-mode voltage range. |
| SS | Soft-start timing | Capacitor-to-GND extends soft-start beyond default 5ms; controls ramp rate of internal reference. |
| SET | Feedback reference node | 1.0V regulated input; current through RSET sets output voltage scaling in no-opto algorithm. |
| OVI | Input overvoltage monitor | MAX17692A-specific pin; stops switching when voltage exceeds 1.215V (rising edge). |
| EN/UVLO | Enable & undervoltage lockout | Resistor-divider from VIN sets turn-on threshold (1.215V rising); enables precise brown-in/brown-out control. |
| FB | Primary-side feedback sense | Samples reflected flyback voltage at LX during secondary conduction; eliminates optocoupler dependency. |
| LX | Switching node | Drain of internal nMOSFET; connects directly to primary winding of flyback transformer. |
Key Features
| Feature | Design Value |
|---|---|
| No-opto primary-side regulation | Eliminates optocoupler, secondary error amplifier, and auxiliary winding - reduces BOM count and PCB area by up to 20%. |
| Integrated 76V/205mΩ nMOSFET | Enables complete flyback solution with single IC; supports 3.5W output without external high-voltage switch. |
| OVI protection (MAX17692A only) | Dedicated pin with 1.215V threshold and 2µs response - adds robust input overvoltage defense without external components. |
| Temperature-compensated diode sensing | TC/VCM pin programs –1 to –2mV/°C compensation - maintains output accuracy across diode VF drift over temperature. |
| Internal loop compensation | MAX17692A variant includes fully compensated control loop - simplifies design vs. external compensation required for MAX17692B. |
| Low-EMI spread-spectrum dithering | ±4% to ±12% frequency modulation via SYNC/DITHER pin - reduces peak EMI emissions to meet CISPR 32 Class B limits. |
Applications
| PLC I/O Modules | IGBT Gate Drive Supplies |
|---|---|
|
Use Scenario: Isolated 15V/–5V dual-rail supply powering digital I/O and analog input conditioning circuits in modular PLC backplanes. IC Role / Device Role / Timing Role: Primary-side regulated flyback controller providing galvanic isolation between field-side and controller-side domains. Use Value: Eliminates optocoupler and secondary-side TL431, reducing component count and enabling <3mm board height in space-constrained DIN-rail modules. |
Use Scenario: Compact 15V isolated bias supply for driving high-side IGBTs in motor drives and inverters operating from 400V DC bus. IC Role / Device Role / Timing Role: No-opto flyback converter delivering stable gate voltage despite wide input variation (e.g., 24–60V auxiliary rail). Use Value: Internal 76V MOSFET and OVI protection prevent damage during bus transients; 125°C rating supports operation near power semiconductors. |
| Industrial Sensors | Telecom Remote Power Feeds |
|
Use Scenario: 5V isolated supply for 4–20mA loop-powered sensors with intrinsic safety requirements in hazardous areas. IC Role / Device Role / Timing Role: Primary-side regulated flyback delivering certified isolation barrier compliant with IEC 60079-11. Use Value: 2.5µA shutdown current and programmable EN/UVLO enable ultra-low-power wake-up schemes; –40°C to +125°C rating ensures field reliability. |
Use Scenario: 12V isolated DC-DC stage in remote radio head (RRH) power architecture, fed from centralized 48V telecom plant. IC Role / Device Role / Timing Role: High-efficiency flyback converter supporting burst-mode light-load operation and EMI-sensitive RF front-end co-location. Use Value: Frequency synchronization and dithering suppress beat frequencies in multi-converter systems; 3.5W output meets typical RRH bias needs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar no-opto isolated flyback converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17692BATC+T | Same pinout and core architecture, but uses external loop compensation (COMP pin instead of OVI); lacks OVI protection. | Better suited for designs requiring custom loop shaping or tighter transient response tuning. | Select MAX17692BATC+T when OVI is unnecessary and loop bandwidth optimization is critical. |
| UCC28911DR | TI's no-opto flyback controller with 700V integrated MOSFET; higher voltage rating but larger SOIC-7 package and no OVI or dithering. | Targets higher-input AC/DC applications (e.g., 85–265VAC), not 4.2–60V DC industrial rails. | Choose UCC28911DR only for universal AC input; MAX17692AATC+T is superior for DC-fed industrial isolation. |
Compared with MAX17692BATC+T, the MAX17692AATC+T trades external compensation flexibility for built-in stability and OVI protection - ideal for rapid deployment in fixed-output industrial supplies. Against UCC28911DR, it offers smaller footprint, lower input voltage compatibility, and advanced EMI features, but lacks 700V integration.
Availability
MAX17692AATC+T is available at Aetrix Electronics and suitable for PLC I/O modules, IGBT gate drive supplies, and industrial sensor isolation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX17692AATC+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX17692AATC+T belongs to Maxim's Rainier family of isolated power devices, designed specifically to simplify and shrink isolated DC-DC conversion in space- and reliability-constrained industrial systems.
FAQ
What is the maximum output power achievable with the MAX17692AATC+T?
The MAX17692AATC+T delivers up to 3.5W of isolated output power under typical conditions using its integrated 76V/205mΩ nMOSFET. Actual output depends on transformer design, input voltage, and thermal management - with multilayer PCB layout and proper heatsinking, the MAX17692AATC+T sustains this rating across its full –40°C to +125°C operating range.
Does the MAX17692AATC+T require an optocoupler for regulation?
No, the MAX17692AATC+T does not require an optocoupler. It uses primary-side sensing of the reflected flyback waveform at the LX pin during secondary diode conduction to regulate output voltage - eliminating the optocoupler, secondary-side error amplifier, and associated components while maintaining ±3% output accuracy.
How is input overvoltage protection implemented on the MAX17692AATC+T?
The MAX17692AATC+T implements input overvoltage protection via its dedicated OVI pin. When the voltage at OVI exceeds 1.215V (typ), the device halts switching within 2µs and resumes only after the OVI voltage falls below 1.1V (typ). A resistor divider from VIN to GND sets the trip point, making OVI fully programmable and independent of EN/UVLO.
Can the MAX17692AATC+T synchronize its switching frequency to an external clock?
Yes, the MAX17692AATC+T supports external clock synchronization via the SYNC/DITHER pin. Applying a clean square wave (1.10× to 1.32× the nominal fSW) to this pin aligns the internal oscillator to the external source - preventing low-frequency beat interference in multi-converter systems such as telecom power shelves or distributed PLC power supplies.
What is the purpose of the TC/VCM pin on the MAX17692AATC+T?
The TC/VCM pin on the MAX17692AATC+T serves two functions: it selects the internal common-mode voltage range for analog blocks and programs temperature compensation for the output rectifier diode's forward voltage drop. By connecting a resistor (40kΩ–200kΩ), designers achieve –1mV/°C to –2mV/°C compensation - maintaining output regulation accuracy across temperature in industrial environments.
MAX17692AATC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Flyback
- Output Type:
- -
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.2V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- 100kHz ~ 350kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX17692AATC+T FAQ
1.How can I place an order for MAX17692AATC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17692AATC+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 MAX17692AATC+T reliable?
The price and inventory of MAX17692AATC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17692AATC+T is usually 5 days.
3.What payment methods are accepted for MAX17692AATC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17692AATC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17692AATC+T?
MAX17692AATC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17692AATC+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 MAX17692AATC+T?
For technical support, including MAX17692AATC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17692AATC+T requirements.
6.How does Aetrix verify that MAX17692AATC+T is sourced from the original manufacturer or authorized distributors?
All MAX17692AATC+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 MAX17692AATC+T meets industry standards.
7.What is the process for return or replacement of MAX17692AATC+T?
All MAX17692AATC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17692AATC+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 MAX17692AATC+T part is unused and in its original packaging.
Return procedure for MAX17692AATC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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