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Analog Devices Inc./Maxim Integrated MAX17662BATE+T
- Part No.:
- MAX17662BATE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX17662BATE+T.pdf
- Description:
- IC REG BUCK ADJ 2A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:587
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Product details
Overview
MAX17662BATE+T 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 operates in forced PWM or DCM mode for optimized full- and light-load efficiency. It is used in industrial control power supplies requiring compact, thermally robust, single-board regulation.
For engineers reviewing the MAX17662BATE+T datasheet, MAX17662BATE+T pinout, MAX17662BATE+T application, or MAX17662BATE+T equivalent, key selection criteria include its 16-pin TQFN-EP (3mm × 3mm) package, internal compensation eliminating external loop components, adjustable EN/UVLO threshold (1.194V–1.303V), 6.5μA shutdown current, and built-in hiccup-mode overload protection with thermal shutdown at +160°C.
Technical Context
The MAX17662BATE+T implements 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 VCC biasing from either VIN or EXTVCC (2.448V–12V), improving efficiency at higher input voltages.
It supports monotonic startup into prebiased outputs, programmable soft-start via external capacitor on SS pin, and open-drain RESET assertion when FB falls below 92.0% of regulation voltage (VFB_REG). The device integrates all power switches, feedback reference, and protection logic-including hiccup-mode OCP triggered by FB < 0.390V and thermal shutdown with 20°C hysteresis.
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 point-of-load regulation in PLC I/O modules and sensor signal chains. |
| Switching Frequency | 400kHz to 2.2MHz (programmable via RT resistor) - enables compact magnetics and EMI optimization in space-constrained designs. |
| Feedback Accuracy | ±1.33% over –40°C to +125°C - ensures stable output voltage across extended industrial ambient conditions. |
| Shutdown Current | 6.5μA - minimizes system standby power in always-on industrial controllers and remote sensors. |
| Thermal Shutdown | +160°C junction with 20°C hysteresis - provides reliable overtemperature protection without latch-up during transient overloads. |
| Package | 16-pin TQFN-EP (3mm × 3mm) - offers low thermal resistance (θJC = 4°C/W) and high power density for convection-cooled PCBs. |
Pinout & Package
MAX17662BATE+T is housed in a 16-pin thermally enhanced thin quad flat no-lead (TQFN-EP) package measuring 3mm × 3mm with exposed pad (EP) for optimal thermal dissipation. The EP must be soldered to SGND and connected to a large copper plane with multiple thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN/UVLO) | Enable / Input UVLO Input | Configures turn-on threshold via external resistor divider; falling below 0.75V forces true shutdown. |
| 2 (VCC) | Internal 1.8V LDO Output | Powers internal circuitry and low-side gate driver; requires 2.2μF ceramic bypass to SGND. |
| 3 (SGND) | Signal Ground Reference | Reference node for FB, MODE, SS, RT, RESET; must be separated from PGND in layout to avoid noise coupling. |
| 4 (MODE) | Operation Mode Selection | Connect to SGND for constant-frequency PWM; connect to VCC for DCM mode to improve light-load efficiency. |
| 5 (SS) | Soft-Start Timing Input | Capacitor to SGND sets ramp time; prevents inrush current during startup into prebiased outputs. |
| 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 between 400kHz and 2.2MHz; open circuit defaults to 500kHz. |
| 8 (RESET) | Open-Drain Output Status Flag | Asserts low if FB drops below 92.0% VFB_REG, during thermal shutdown, or EN/UVLO undervoltage. |
| 9 (EXTVCC) | External Bias Supply Input | Accepts 2.448V–12V to bypass IN-LDO and reduce power loss; improves efficiency at high VIN. |
| 10 (BST) | Bootstrap Capacitor Terminal | Connects 0.1μF ceramic capacitor to LX; supplies gate drive voltage for high-side MOSFET. |
| 11–12 (LX) | Switching Node Outputs | High-current connection points to inductor; share internal high- and low-side MOSFETs and current-sense path. |
| 13–14 (PGND) | Power Ground Terminals | Low-impedance return path for high di/dt currents; must connect directly to power ground plane under EP. |
| 15–16 (VIN) | Main Power Input Pins | Accept 3.5V–36V input; require local 2.2μF ceramic decoupling close to pins and PGND. |
| EP | Exposed Thermal Pad | Must be soldered to SGND and tied to large thermal copper area with ≥4 thermal vias for θJA = 38°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Buck Topology | Integrated 130mΩ high-side and 90mΩ low-side nMOSFETs eliminate external Schottky diode and reduce conduction losses. |
| Internal Compensation | Eliminates external Type-II/III compensation network - reduces BOM count and layout sensitivity across 0.6V–90% VIN output range. |
| DCM/PWM Mode Selectability | Enables >90% efficiency at light loads (DCM) while maintaining EMI-controlled fixed frequency (PWM) under full load. |
| Prebiased Output Startup | Prevents reverse current flow during startup into powered-backup rails - critical for hot-swap and redundant supply applications. |
| Hiccup-Mode Overcurrent Protection | 32,768-cycle timeout and automatic retry after overload clears - limits average power dissipation during sustained short-circuit events. |
| CISPR 32 Class B Compliance | Meets radiated/conducted EMI requirements for industrial equipment without additional filtering in typical layouts. |
Applications
| Industrial Control Power Supplies | General-Purpose Point-of-Load |
|---|---|
Use Scenario: Powering FPGA I/O banks, microcontroller cores, and analog front-ends in programmable logic controllers (PLCs) operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary 2A buck regulator converting 24V bus to 3.3V/1.2V rails with precise sequencing and RESET monitoring. Use Value: ±1.33% regulation accuracy and –40°C to +125°C operation ensure stable digital logic and ADC reference performance across ambient extremes. | Use Scenario: Local voltage conversion on dense PCBs where board space and thermal management are constrained, such as motor drive control cards. IC Role / Device Role / Timing Role: Compact, self-contained DC-DC stage replacing discrete controller + external MOSFET solutions. Use Value: 3mm × 3mm TQFN-EP package with θJC = 4°C/W enables 2A delivery without heatsinks in convection-only cooling. |
| Distributed Supply Regulation | Base Station Power Supplies |
Use Scenario: Secondary regulation from intermediate 12V/48V backplane rails to ASIC or RF transceiver supply domains in telecom edge nodes. IC Role / Device Role / Timing Role: Efficient, low-noise POL converter supporting dynamic load steps up to 1A/μs with fast transient response. Use Value: Programmable soft-start and monotonic startup prevent supply rail collapse during multi-rail power-up sequences. | Use Scenario: Powering fronthaul interface ICs and clock distribution circuits in 5G small cell base stations with strict EMI limits. IC Role / Device Role / Timing Role: CISPR 32 Class B-compliant buck regulator delivering clean 1.8V/3.3V supplies adjacent to sensitive RF sections. Use Value: Adjustable 400kHz–2.2MHz switching frequency allows EMI notch placement away from critical LTE/5G bands. |
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 |
|---|---|---|---|
| LM61480RQR | 4.5V–36V input, 8A output, 500kHz–2.1MHz fSW, ±1% FB accuracy, requires external compensation. | Higher current capacity and wider fSW range but larger 16-pin WQFN (4mm × 4mm); lacks EXTVCC bias option. | Select LM61480RQR only when >2A output or tighter FB accuracy is required; MAX17662BATE+T preferred for space-constrained 2A designs with internal compensation. |
| TPS54202HDDCR | 4.5V–28V input, 2A output, 400kHz–2.2MHz fSW, ±1.5% FB accuracy, integrated soft-start but no RESET output. | No open-drain RESET flag or hiccup-mode OCP; smaller 10-pin WSON (3mm × 3mm) but higher RDS_ON (180mΩ HS / 120mΩ LS). | Choose TPS54202HDDCR for cost-sensitive, non-safety-critical applications lacking status monitoring; MAX17662BATE+T required where RESET signaling and robust hiccup protection are mandatory. |
Compared with LM61480RQR and TPS54202HDDCR, MAX17662BATE+T uniquely combines internal compensation, EXTVCC bias support for high-VIN efficiency, and integrated RESET with hiccup-mode OCP - making it optimal for industrial 2A POL designs demanding reliability, compactness, and minimal external components.
Availability
MAX17662BATE+T is available at Aetrix Electronics and suitable for industrial control power supplies, general-purpose point-of-load regulation, and distributed supply regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17662BATE+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
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+T belongs to the Himalaya family of power management ICs, designed specifically to deliver cooler, smaller, and simpler DC-DC solutions for industrial and infrastructure applications demanding high reliability and wide input voltage tolerance.
FAQ
What is the maximum output current capability of the MAX17662BATE+T?
The MAX17662BATE+T delivers up to 2A continuous output current across its full operating temperature range of –40°C to +125°C ambient. This rating is supported by its integrated 130mΩ high-side and 90mΩ low-side MOSFETs, internal thermal shutdown at +160°C junction, and 3mm × 3mm TQFN-EP package with 4°C/W junction-to-case thermal resistance. Peak current limit is 3.4A (typical), enabling robust transient handling.
Does the MAX17662BATE+T require external compensation components?
No, the MAX17662BATE+T features built-in compensation across its entire output-voltage range (0.6V to 90% of VIN), eliminating the need for external Type-II or Type-III compensation networks. This simplifies design, reduces BOM count, and improves stability margin without requiring loop analysis - a key differentiator from most competing synchronous buck controllers that mandate external RC networks.
How does the MODE pin affect efficiency in the MAX17662BATE+T?
The MODE pin on the MAX17662BATE+T selects between forced PWM mode (MODE = SGND) and DCM mode (MODE = VCC). In DCM mode, the inductor current is allowed to fall to zero at light loads, skipping switching pulses and reducing switching losses - achieving >90% efficiency even at 10mA load. In PWM mode, constant frequency operation maintains EMI predictability but reduces light-load efficiency due to continued switching.
Can the MAX17662BATE+T operate with a prebiased output?
Yes, the MAX17662BATE+T supports monotonic startup into prebiased outputs. When enabled, both high-side and low-side MOSFETs remain off until the internal reference ramps up, preventing reverse current flow from the output rail. This feature is essential for hot-swap applications, redundant power systems, and systems with backup batteries or supercapacitors already holding output voltage prior to enable.
What protection features are integrated into the MAX17662BATE+T?
The MAX17662BATE+T integrates hiccup-mode overcurrent protection (triggered by FB < 0.390V), thermal shutdown (+160°C with 20°C hysteresis), adjustable EN/UVLO, output voltage monitoring with open-drain RESET, and bootstrap undervoltage lockout. It also includes valley current limiting in DCM mode and cycle-by-cycle peak current limiting in PWM mode - providing comprehensive fault coverage without external supervision circuitry.
MAX17662BATE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX17662BATE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17662BATE+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 MAX17662BATE+T reliable?
The price and inventory of MAX17662BATE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17662BATE+T is usually 5 days.
3.What payment methods are accepted for MAX17662BATE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17662BATE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17662BATE+T?
MAX17662BATE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17662BATE+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 MAX17662BATE+T?
For technical support, including MAX17662BATE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17662BATE+T requirements.
6.How does Aetrix verify that MAX17662BATE+T is sourced from the original manufacturer or authorized distributors?
All MAX17662BATE+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 MAX17662BATE+T meets industry standards.
7.What is the process for return or replacement of MAX17662BATE+T?
All MAX17662BATE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17662BATE+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 MAX17662BATE+T part is unused and in its original packaging.
Return procedure for MAX17662BATE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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