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Analog Devices Inc./Maxim Integrated MAX17662BATE+
- Part No.:
- MAX17662BATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX17662BATE+.pdf
- Description:
- IC REG BUCK ADJ 2A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:280
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Product details
Overview
MAX17662BATE+ from Analog Devices is a Himalaya-series synchronous step-down DC-DC converter IC with integrated high-side and low-side MOSFETs, delivering up to 2A output current across a 3.5V–36V input range. It features peak-current-mode control, programmable switching frequency (400kHz–2.2MHz), ±1.33% output voltage regulation accuracy over –40°C to +125°C, and internal compensation eliminating external loop components. It serves as a compact, high-efficiency point-of-load regulator in industrial power supplies.
For engineers reviewing the MAX17662BATE+ datasheet, MAX17662BATE+ pinout, MAX17662BATE+ application, or MAX17662BATE+ equivalent, key selection considerations include its 2A continuous output capability, TQFN-EP (3mm × 3mm) package thermal performance, DCM/PWM mode flexibility for light-load efficiency, and built-in hiccup-mode overload protection for robust operation in harsh environments.
Technical Context
The MAX17662BATE+ employs a peak-current-mode control architecture with an internal transconductance error amplifier, slope compensation, and cycle-by-cycle current limiting. Its dual LDO structure (IN-LDO and EXT-LDO) enables seamless bias sourcing from either VIN or EXTVCC (2.448V–12V), improving efficiency at high input voltages.
It supports monotonic startup into prebiased outputs, adjustable EN/UVLO thresholds (1.194V–1.303V), and open-drain RESET monitoring with 92.0%–97.0% VFB_REG trip points. The device integrates thermal shutdown (+160°C trigger, 20°C hysteresis) and hiccup-mode OCP with 32,768-cycle timeout for sustained short-circuit protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - supports wide industrial input rails including 12V, 24V, and 36V systems without external pre-regulation. |
| Output Current | Up to 2A continuous - sufficient for FPGA core rails, microcontroller SoCs, and industrial I/O modules. |
| Switching Frequency | 400kHz to 2.2MHz - adjustable via RT resistor; higher frequencies enable smaller inductors and reduced solution footprint. |
| Feedback Accuracy | ±1.33% over –40°C to +125°C - ensures stable output regulation across full industrial ambient temperature range. |
| Efficiency Peak | 95% - achieved under typical load conditions, minimizing thermal stress and enabling compact PCB layouts. |
| Shutdown Current | 6.5μA - ultra-low quiescent draw enables long-term standby in battery-backed or energy-sensitive systems. |
| Package | 16-pin TQFN-EP (3mm × 3mm) - exposed pad improves thermal dissipation (θJC = 4°C/W); compatible with standard reflow profiles. |
Pinout & Package
MAX17662BATE+ is housed in a 16-pin, 3mm × 3mm TQFN-EP package with exposed thermal pad (EP). The EP must be soldered to SGND and connected to a large copper plane with ≥4 thermal vias for optimal junction-to-ambient thermal performance (θJA = 38°C/W on four-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN/UVLO | Enable / Input UVLO Input | Resistive divider connection sets turn-on threshold (1.194V–1.303V rising); pull low below 0.75V for true shutdown. |
| 2 VCC | 1.8V Internal LDO Output | Powers internal logic and low-side gate driver; bypassed with 2.2μF ceramic capacitor to SGND. |
| 3 SGND | Signal Ground Reference | Reference node for FB, SS, MODE, RT, RESET; separate from PGND to minimize noise coupling. |
| 4 MODE | Operation Mode Select | Connect to SGND for forced PWM (constant frequency); connect to VCC for DCM (light-load efficiency). |
| 5 SS | Soft-Start Timing Input | Capacitor to SGND sets ramp time (e.g., 6.8nF → 0.82ms); prevents inrush current during startup. |
| 6 FB | Feedback Voltage Input | Monitors output via resistor divider; regulates VOUT from 0.6V to 90% of VIN with ±1.33% accuracy. |
| 7 RT | Frequency Programming Input | Resistor to SGND sets fSW (400kHz–2.2MHz); open circuit defaults to 500kHz. |
| 8 RESET | Open-Drain Fault Indicator | Asserts low if FB falls below 92.0% VFB_REG, during thermal shutdown, or EN/UVLO undervoltage. |
| 9 EXTVCC | External Bias Supply Input | Accepts 2.448V–12V to power VCC via EXT-LDO, improving efficiency at high VIN; connect to SGND if unused. |
| 10 BST | Bootstrap Capacitor Node | 0.1μF ceramic cap between BST and LX provides gate drive voltage for high-side MOSFET. |
| 11–12 LX | Switching Node Outputs | Connect directly to inductor switch node; carries high di/dt; requires tight layout and Kelvin routing. |
| 13–14 PGND | Power Ground Terminals | Low-impedance return path for high-current switching loops; must be tied to thermal pad and solid ground plane. |
| 15–16 VIN | Main Power Input Pins | 3.5V–36V supply inputs; decoupled with ≥2.2μF ceramic capacitors placed adjacent to pins. |
| EP | Exposed Thermal Pad | Must be soldered to SGND and thermally connected to large copper area with ≥4 vias for θJC = 4°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous MOSFET Integration | Integrated 130mΩ high-side and 90mΩ low-side nMOSFETs eliminate external Schottky diode and reduce BOM count. |
| Internal Compensation | Eliminates external Type-II/III compensation network - simplifies design, reduces layout sensitivity, and accelerates time-to-market. |
| DCM/PWM Mode Flexibility | MODE pin selects between constant-frequency PWM (all loads) or discontinuous conduction mode (light-load efficiency >85%). |
| Hiccup-Mode Overcurrent Protection | 32,768-cycle shutdown timeout limits average power dissipation during sustained short-circuit events. |
| Prebiased Output Startup | Supports monotonic ramp-up when output is precharged - prevents reverse current flow and system instability. |
| CISPR 32 Class B Compliance | Meets radiated/conducted EMI requirements for industrial equipment without added filtering components. |
Applications
| Industrial Control Power Supplies | Distributed Supply Regulation |
|---|---|
Use Scenario: Powering PLC I/O modules, motor drivers, and sensor interfaces in factory automation cabinets with 24V rail. IC Role / Device Role / Timing Role: Primary buck regulator converting 24V bus to 3.3V/5V logic rails with high PSRR and transient response. Use Value: 2A output supports multiple downstream LDOs or digital loads; ±1.33% regulation ensures ADC reference stability. | Use Scenario: Local voltage conversion on multi-board systems where centralized 12V/24V distribution feeds point-of-load regulators. IC Role / Device Role / Timing Role: Compact, thermally efficient POL converter placed near FPGA or DSP to minimize IR drop and noise. Use Value: 3mm × 3mm TQFN-EP package enables dense placement; EXTVCC bias option improves efficiency at 12V input. |
| Base Station Power Supplies | High-Voltage Single-Board Systems |
Use Scenario: Intermediate bus conversion in 4G/5G remote radio units operating from 48V telecom input. IC Role / Device Role / Timing Role: Step-down stage feeding intermediate 5V/3.3V rails for RF front-end and baseband processors. Use Value: 36V max input accommodates 48V transients; hiccup-mode OCP protects against antenna fault-induced shorts. | Use Scenario: Power management on high-voltage test equipment or industrial data acquisition boards with 36V input capability. IC Role / Device Role / Timing Role: Main DC-DC converter delivering regulated 1.8V/3.3V to mixed-signal ASICs and precision analog circuits. Use Value: Internal compensation and all-ceramic capacitor support simplify layout; -40°C to +125°C rating ensures field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480RQRVCR | 4.5V–36V input, 8A output, 2.1MHz max fSW; larger 16-pin WQFN (4mm × 4mm); no EXTVCC pin. | Higher current capacity suits multi-rail systems; lacks EXTVCC efficiency boost for high-VIN operation. | Select when >2A output or tighter layout spacing allows larger package; verify thermal derating at 125°C ambient. |
| TPS54202HDDCR | 4.5V–28V input, 2A output, fixed 500kHz fSW; no DCM mode; no RESET output; smaller 8-pin SOIC package. | Limited to lower input voltages; missing hiccup OCP and output monitoring - less robust for industrial fault tolerance. | Choose for cost-sensitive, non-critical 24V applications where RESET and thermal protection are not required. |
Compared with LM61480RQRVCR and TPS54202HDDCR, MAX17662BATE+ uniquely combines 2A output, 3.5V–36V input, EXTVCC biasing, DCM/PWM mode selection, and integrated RESET in a 3mm × 3mm footprint - making it optimal for space-constrained, high-reliability industrial POL designs.
Availability
MAX17662BATE+ is available at Aetrix Electronics and suitable for industrial control power supplies, distributed supply regulation, and high-voltage single-board systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17662BATE+ 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX17662BATE+ belongs to the Himalaya series of DC-DC converters, designed specifically for cooler, smaller, and simpler industrial power solutions - emphasizing integration, thermal efficiency, and robust protection features.
FAQ
What is the maximum output current capability of the MAX17662BATE+?
The MAX17662BATE+ delivers up to 2A continuous output current across its full operating temperature range of –40°C to +125°C. This rating is validated with proper thermal management - including connection of the exposed pad (EP) to SGND and use of ≥4 thermal vias - and assumes adequate input capacitance and PCB copper area per the evaluation kit layout guidelines.
Does the MAX17662BATE+ support adjustable switching frequency, and how is it configured?
Yes, the MAX17662BATE+ supports programmable switching frequency from 400kHz to 2.2MHz using an external resistor connected from the RT pin to SGND. The relationship is RRT(kΩ) = 20625 / (fSW(kHz) − 1). Leaving RT unconnected sets the default frequency to 500kHz. This adjustment enables optimization of inductor size, efficiency, and EMI performance for each application.
How does the MODE pin affect the operation of the MAX17662BATE+?
The MODE pin on the MAX17662BATE+ selects between two operating modes: connecting MODE to SGND enables forced PWM mode (constant frequency at all loads), while connecting MODE to VCC enables DCM mode (discontinuous conduction at light loads for enhanced efficiency). The setting is latched at power-up after VIN, VCC, and EN/UVLO exceed their respective UVLO thresholds.
What protection features are integrated into the MAX17662BATE+?
The MAX17662BATE+ integrates hiccup-mode overcurrent protection (triggered when FB drops below 0.390V), thermal shutdown (+160°C junction, 20°C hysteresis), adjustable EN/UVLO, output voltage monitoring with open-drain RESET, and prebiased output startup. These features ensure reliable operation in industrial environments subject to load faults, thermal stress, and input transients.
Can the MAX17662BATE+ operate with a precharged output, and how is this handled?
Yes, the MAX17662BATE+ supports monotonic startup into a prebiased output. During prebias conditions, both high-side and low-side MOSFETs remain off until the PWM comparator commands the first pulse, preventing reverse current flow. The output then ramps smoothly to the target voltage aligned with the internal reference - avoiding overshoot or latch-up in systems with backup supplies or hot-swap configurations.
MAX17662BATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 32.4V
- Current - Output:
- 2A
- Frequency - Switching:
- 400kHz, 500kHz, 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
MAX17662BATE+ FAQ
1.How can I place an order for MAX17662BATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17662BATE+ 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 MAX17662BATE+ reliable?
The price and inventory of MAX17662BATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17662BATE+ is usually 5 days.
3.What payment methods are accepted for MAX17662BATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17662BATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17662BATE+?
MAX17662BATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17662BATE+ 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 MAX17662BATE+?
For technical support, including MAX17662BATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17662BATE+ requirements.
6.How does Aetrix verify that MAX17662BATE+ is sourced from the original manufacturer or authorized distributors?
All MAX17662BATE+ 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 MAX17662BATE+ meets industry standards.
7.What is the process for return or replacement of MAX17662BATE+?
All MAX17662BATE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17662BATE+, 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 MAX17662BATE+ part is unused and in its original packaging.
Return procedure for MAX17662BATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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