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Analog Devices Inc./Maxim Integrated MAX17632BATE+T
- Part No.:
- MAX17632BATE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX17632BATE+T.pdf
- Description:
- IC REG 36V 2A HI EFFICIENCY SYNC
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Product details
Overview
MAX17632BATE+T from Maxim Integrated is a fixed 5V, 2A synchronous step-down DC-DC converter with integrated MOSFETs, operating from 4.5V to 36V input. It features peak-current-mode control, ±1.2% output voltage regulation over –40°C to +125°C, and supports PWM/DCM/PFM modes for high efficiency across load conditions. Used in industrial control power supplies and high-voltage single-board systems.
For engineers reviewing the MAX17632BATE+T datasheet, MAX17632BATE+T pinout, MAX17632BATE+T application, or MAX17632BATE+T equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts for fixed-output 5V buck conversion in harsh environments.
Technical Context
The MAX17632BATE+T implements peak-current-mode control with internal compensation, eliminating external loop components. Its MODE/SYNC pin selects forced PWM (SGND), DCM (VCC), or PFM (open) operation-enabling >94% peak efficiency and optimized light-load performance.
It integrates high-side (125–250 mΩ) and low-side (80–160 mΩ) nMOSFETs, supports external clock synchronization (1.1× to 1.4× fSW), and includes hiccup-mode overload protection, monotonic soft-start with prebias support, and built-in RESET monitoring with 90.5–94.6% FB undervoltage trip threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V - enables direct use with 12V/24V industrial rails and wide-input wall adapters without pre-regulation. |
| Output Voltage | Fixed 5.0V ±1.2% - guaranteed accuracy over full temperature range eliminates need for post-regulation in USB-powered or logic-supply applications. |
| Output Current | 2A continuous - supports powering multiple microcontrollers, FPGAs, or sensors from a single compact regulator stage. |
| Switching Frequency | 400kHz to 2.2MHz (adjustable via RT resistor) - allows trade-off between size (higher fSW → smaller inductor/capacitors) and efficiency (lower fSW → reduced switching loss). |
| Efficiency | Up to 94% peak - achieved via synchronous rectification and low RDS(on) MOSFETs, reducing thermal stress and enabling 2-layer PCB designs. |
| Shutdown Current | 2.8μA - enables ultra-low-power standby in battery-backed or energy-harvesting systems without external enable circuitry. |
| Operating Temperature | –40°C to +125°C ambient - qualified for deployment in industrial enclosures, base stations, and automotive under-hood adjacent zones. |
Pinout & Package
MAX17632BATE+T is housed in a thermally enhanced 16-pin 3mm × 3mm TQFN package (package code T1633+5C) with exposed pad for improved heat dissipation (θJA = 38°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN/UVLO | Enable / Input UVLO Threshold Input | Active-high enable with programmable turn-on threshold (1.19–1.26V rising); connects to VIN divider for input undervoltage lockout or to VIN for always-on operation. |
| 2 VCC | Internal 5V LDO Output | Provides regulated 5V (4.75–5.25V) for gate drive and internal circuitry; requires 2.2μF ceramic bypass to SGND; not intended for external loading. |
| 3 SGND | Analog Ground Reference | Separate analog ground pin minimizes noise coupling into feedback and soft-start circuits; must be connected to system ground with low-impedance path. |
| 4 MODE/SYNC | Mode Selection / External Clock Input | Selects PWM (SGND), DCM (VCC), or PFM (open); also accepts external clock (1.1–1.4× fSW) for EMI reduction and multi-rail synchronization. |
| 5 SS | Soft-Start Timing Input | Connects to SGND via capacitor to set monotonic output ramp time; supports startup into prebiased outputs without reverse current. |
| 6 FB | Feedback Input | Direct connection to VOUT for fixed 5V operation (MAX17632B); monitors output voltage with ±1.2% regulation accuracy and RESET assertion at 90.5–94.6% of nominal. |
| 7 RT | Frequency Programming Input | Resistor-to-SGND sets switching frequency from 400kHz (open) to 2.2MHz; enables optimization of inductor size and efficiency vs. EMI profile. |
| 8 RESET | Open-Drain Power-Good Output | Asserts low when FB falls below 92% of set point; deasserts 1024 switching cycles after FB rises above 95%; drives microcontroller reset or sequencing logic. |
| 9 EXTVCC | External Auxiliary Supply Input | Accepts 4.56–4.84V external supply (e.g., buck output) to reduce internal LDO losses and improve overall efficiency at high input voltages. |
| 10 PGND | Power Ground | High-current return path for LX switch node; must be tied to SGND at single point near IC to minimize ground bounce and EMI. |
| 11 VOUT | Regulated Output Terminal | Delivers up to 2A at fixed 5.0V; requires local 22μF ceramic output capacitance (X7R, 1210) for stability and transient response. |
| 12 LX | Switch Node | Connects to inductor; carries high di/dt switching current (±3.5A RMS); layout must minimize loop area to reduce EMI and voltage spikes. |
| 13 BST | Bootstrap Capacitor Connection | Connects to 0.1μF ceramic capacitor between BST and LX to generate gate drive voltage for high-side MOSFET; critical for reliable high-side conduction. |
| 14 VIN | Main Input Supply | Accepts 4.5–36V; requires 2.2μF ceramic input capacitor close to VIN and PGND pins to suppress ripple and handle high-frequency transients. |
| 15 EP | Exposed Thermal Pad | Internally connected to PGND; must be soldered to large copper pour for thermal management and EMI reduction. |
| 16 NC | No Connect | Not internally bonded; left unconnected per datasheet recommendation to avoid parasitic coupling or reliability risk. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Buck Architecture | Integrated 125–250 mΩ high-side and 80–160 mΩ low-side nMOSFETs eliminate external Schottky diode, reducing BOM count and conduction losses. |
| Internal Compensation | Eliminates external Type-II/III compensation network, simplifying layout and ensuring stable operation across all output voltages and loads without tuning. |
| Multi-Mode Operation | PWM (constant frequency), DCM (light-load valley switching), and PFM (pulse-skipping) modes automatically adapt to load, maintaining >85% efficiency down to 1mA. |
| Robust Protection Suite | Hiccup-mode OCP, thermal shutdown (165°C), adjustable EN/UVLO, prebias-safe soft-start, and RESET with 90.5–94.6% FB trip window ensure field-reliable operation. |
| EMI-Optimized Design | External clock synchronization, minimum on-time of 52ns, and controlled slew-rate switching reduce conducted and radiated emissions in dense layouts. |
Applications
| Industrial Control Power Supplies | Base Station Power Supplies |
|---|---|
|
Use Scenario: Providing clean, regulated 5V to PLC I/O modules, motor drivers, and sensor interfaces in factory automation cabinets with 24V DC bus. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 24V rail to isolated 5V logic supply with hiccup-mode fault recovery and -40°C to +125°C operation. Use Value: Eliminates need for external UVLO, soft-start, and power-good circuitry-reducing footprint by >30% versus discrete solutions while meeting IEC 61000-4 immunity requirements. |
Use Scenario: Generating 5V for FPGA configuration, Ethernet PHYs, and RF front-end biasing in 4G/5G macrocell remote radio units powered from 48V telecom rectifiers. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter delivering 2A at 5V with external clock sync to align switching edges across multiple rails and suppress beat frequencies. Use Value: Achieves <60 dBµV/m radiated emissions (CISPR-22 Class B) at 30–1000 MHz without shielding, enabling compact metal-free enclosure designs. |
| Distributed Supply Regulation | Wall Transformer Regulation |
|
Use Scenario: Local 5V regulation on high-voltage single-board computers (e.g., 24V input industrial PCs) where long PCB traces cause significant IR drop and noise. IC Role / Device Role / Timing Role: Distributed buck regulator placed near load to maintain tight output regulation (<±1.2%) despite input line impedance and dynamic load steps up to 2A. Use Value: Enables <50mV output deviation during 0→2A load transients (100µs settling), avoiding brownouts in real-time control subsystems. |
Use Scenario: Replacing linear regulators in universal AC/DC wall adapters (e.g., 12–36V DC input) to deliver efficient 5V USB power with minimal heat buildup. IC Role / Device Role / Timing Role: High-input-voltage buck converter operating in PFM mode at light loads (<10mA) to achieve <200µA no-load input current and meet DOE Level VI efficiency standards. Use Value: Reduces adapter surface temperature by >15°C versus linear solution, enabling smaller plastic housings and higher power density (up to 10W in 25mm × 25mm footprint). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5–65V input, 5V fixed output, 1A max, requires external compensation and bootstrap diode; AEC-Q100 qualified. | Targeted at automotive infotainment and ADAS; lacks integrated high-side FET and RESET output. | Choose LM5164QPWPRQ1 only if AEC-Q100 qualification is mandatory and 1A output suffices; MAX17632BATE+T offers 2A, internal FETs, and RESET in same package. |
| TPS54202DRCT | 4.5–28V input, adjustable output (0.596–6V), 2A, requires external compensation; no PFM/DCM modes, no RESET, no EXTVCC. | Designed for cost-sensitive consumer electronics; lacks industrial-grade temp range and robust protection features. | Choose TPS54202DRCT only for non-critical commercial applications where 28V max input and absence of hiccup OCP/RESET are acceptable. |
Compared with LM5164QPWPRQ1 and TPS54202DRCT, MAX17632BATE+T uniquely combines 2A fixed-5V output, integrated MOSFETs, internal compensation, RESET, EXTVCC, and –40°C to +125°C operation in a 3mm × 3mm TQFN-making it optimal for space-constrained industrial and telecom POE designs requiring full feature integration.
Availability
MAX17632BATE+T is available at Aetrix Electronics and suitable for industrial control power supplies, base station power supplies, and distributed supply regulation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX17632BATE+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 MAX17632 product line delivers high-voltage, high-efficiency synchronous buck converters targeting industrial POE, telecom infrastructure, and ruggedized embedded systems needing wide input range and extended temperature operation.
FAQ
What is the output voltage tolerance of the MAX17632BATE+T over temperature?
The MAX17632BATE+T provides ±1.2% output voltage regulation accuracy over the full –40°C to +125°C ambient temperature range. This specification applies specifically to the MAX17632B variant and is guaranteed-not typical-ensuring consistent 5.0V delivery in industrial enclosures and outdoor base station deployments without recalibration.
Can the MAX17632BATE+T operate with an input voltage lower than 4.5V?
No. The MAX17632BATE+T has a specified minimum input voltage of 4.5V. Below this threshold, the device enters undervoltage lockout (UVLO) and disables switching. The EN/UVLO pin's rising threshold is 1.19–1.26V, but VIN itself must remain ≥4.5V for proper gate drive and regulation-verified in electrical characteristics tables and absolute maximum ratings.
Does the MAX17632BATE+T require external compensation components?
No. The MAX17632BATE+T features built-in compensation across its entire output-voltage range, eliminating the need for external Type-II or Type-III compensation networks. This is explicitly stated in the General Description and confirmed in the Benefits and Features section-reducing design complexity and PCB area versus controllers like TPS54202DRCT.
How does the RESET function work on the MAX17632BATE+T?
The MAX17632BATE+T's open-drain RESET pin asserts low when FB falls below 90.5–94.6% of its nominal value (e.g., <4.525V for 5V output) and deasserts 1024 switching cycles after FB rises above 93.8–97.8% (e.g., >4.69V). This provides glitch-free power-good signaling for microcontroller reset sequencing without external comparators.
Is the MAX17632BATE+T pin-compatible with other variants in the MAX17632 family?
Yes. All MAX17632 variants-including MAX17632A, MAX17632B, and MAX17632C-share identical 16-pin TQFN packages, pinouts, and thermal pads. The only functional differences are output voltage (fixed 3.3V, fixed 5V, or adjustable) and corresponding FB regulation thresholds-allowing drop-in replacement during design iteration or BOM optimization.
MAX17632BATE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX17632BATE+T FAQ
1.How can I place an order for MAX17632BATE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17632BATE+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 MAX17632BATE+T reliable?
The price and inventory of MAX17632BATE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17632BATE+T is usually 5 days.
3.What payment methods are accepted for MAX17632BATE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17632BATE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17632BATE+T?
MAX17632BATE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17632BATE+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 MAX17632BATE+T?
For technical support, including MAX17632BATE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17632BATE+T requirements.
6.How does Aetrix verify that MAX17632BATE+T is sourced from the original manufacturer or authorized distributors?
All MAX17632BATE+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 MAX17632BATE+T meets industry standards.
7.What is the process for return or replacement of MAX17632BATE+T?
All MAX17632BATE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17632BATE+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 MAX17632BATE+T part is unused and in its original packaging.
Return procedure for MAX17632BATE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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