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Analog Devices Inc./Maxim Integrated MAX17630BATE+
- Part No.:
- MAX17630BATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX17630BATE+.pdf
- Description:
- IC REG BUCK ADJ 1A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:271
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Product details
Overview
MAX17630BATE+ from Maxim Integrated is a high-efficiency, synchronous step-down DC-DC converter with integrated MOSFETs, delivering up to 1A output at fixed 5V from 4.5V–36V input. It features peak-current-mode control, ±1.2% feedback regulation accuracy over –40°C to +125°C, and operates in PWM/DCM/PFM modes for full- and light-load efficiency. Used in industrial control power supplies and base station regulation.
For engineers reviewing the MAX17630BATE+ datasheet, MAX17630BATE+ pinout, MAX17630BATE+ application, or MAX17630BATE+ equivalent, key selection factors include its 5V fixed output, 16-pin TQFN (3mm × 3mm) package, 400kHz–2.2MHz programmable switching frequency, hiccup-mode overload protection, and built-in output voltage monitoring with RESET.
Technical Context
The MAX17630BATE+ implements peak-current-mode control with internal compensation, eliminating external loop components across its fixed 5V output range. Its MODE/SYNC pin selects between forced PWM, DCM, or PFM operation-enabling >95% peak efficiency and optimized light-load performance without sacrificing transient response.
It integrates high-side (150–300mΩ) and low-side (100–200mΩ) nMOSFETs, supports external clock synchronization (±40% capture range), and includes programmable EN/UVLO thresholds (1.19–1.26V rising), soft-start via SS pin, and auxiliary EXTVCC switchover (4.56–4.84V) for improved efficiency when powered from the 5V output rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V - supports wide industrial input rails including 12V, 24V, and 36V systems without pre-regulation. |
| Output Voltage | Fixed 5.0V ±1.2% - guaranteed regulation accuracy over –40°C to +125°C ambient, no external resistor divider required. |
| Output Current | Up to 1A continuous - delivers full rated current across full temperature range with thermal shutdown at 165°C. |
| Switching Frequency | 400kHz to 2.2MHz (programmable via RT resistor) - enables compact magnetics and EMI optimization; supports external clock sync. |
| Efficiency | Peak 95% - achieved in PWM mode at full load; enhanced light-load efficiency via PFM/DCM modes and 2.8μA shutdown current. |
| Package | 16-pin TQFN (3mm × 3mm, EP) - thermally enhanced layout with exposed pad tied to SGND; θJA = 38°C/W on 4-layer board. |
| Protection Features | Hiccup-mode OCP, overtemperature shutdown (165°C, 10°C hysteresis), RESET monitoring (90.5–94.6% FB trip), and adjustable EN/UVLO. |
Pinout & Package
MAX17630BATE+ is housed in a 16-pin, 3mm × 3mm TQFN package with exposed thermal pad (EP). The package uses RoHS-compliant lead finish and supports reflow soldering per JEDEC J-STD-020 (260°C peak).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | EN/UVLO | Enable/undervoltage lockout input - rising threshold 1.19–1.26V; controls startup sequencing and brownout protection. |
| 2 | VCC | Internal 5V LDO output - powers internal circuitry; requires 2.2μF ceramic bypass to SGND; not for external loading. |
| 3 | SGND | Analog ground reference - separate from PGND to minimize noise coupling into feedback and control loops. |
| 4 | MODE/SYNC | Mode selection and external clock sync input - sets PWM/DCM/PFM; accepts 2.1V VIH and 0.8V VIL logic levels. |
| 5 | SS | Soft-start timing input - capacitor to SGND sets ramp time; supports monotonic startup with prebiased output. |
| 6 | FB | Feedback input - internally referenced to 5.0V; connects directly to VOUT for fixed-output operation. |
| 7 | RT | Frequency programming - resistor to SGND sets fSW from 400kHz to 2.2MHz; open-circuit defaults to 400kHz. |
| 8 | RESET | Open-drain reset output - asserts low when FB falls below 92% of regulation; deasserts after 1024 cycles above 95%. |
| 9 | EXTVCC | Auxiliary supply input - reduces LDO losses when connected to 5V output; switchover threshold 4.56–4.84V. |
| 10 | BST | Bootstrap capacitor node - requires 0.1μF ceramic cap to LX; enables high-side MOSFET gate drive. |
| 11–12 | LX | Switching node - connects to inductor's switch-side terminal; handles high di/dt; dual pins reduce parasitic inductance. |
| 13–14 | PGND | Power ground - returns high-current paths (LX, VIN); must be low-impedance plane with multiple vias to EP. |
| 15–16 | VIN | Main input supply - 4.5V–36V; decoupled with 2.2μF ceramic cap near pins; dual pins reduce IR drop and noise. |
| EP | Exposed Pad | Thermal and electrical ground - must be soldered to SGND plane with ≥4 thermal vias for reliable thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode - reduces conduction loss and improves efficiency, especially at light loads. |
| Internal compensation | Removes need for external RC network - simplifies design, saves board space, and ensures stable loop response across 5V output. |
| Programmable switching frequency | 400kHz–2.2MHz via single RT resistor - enables optimization of size, efficiency, and EMI for specific system constraints. |
| Three operating modes (PWM/DCM/PFM) | Enables >95% peak efficiency and <50μA quiescent current in PFM - critical for battery-backed or always-on industrial systems. |
| Hiccup-mode overload protection | Auto-recovering fault response - limits power dissipation during sustained short-circuit or overload, improving reliability. |
| RESET with voltage monitoring | Monitors FB pin continuously - provides system-level power-good signaling with 90.5–94.6% undervoltage trip window. |
Applications
| Industrial Control Power Supplies | Base Station Power Supplies |
|---|---|
|
Use Scenario: Providing isolated 5V bias for PLC I/O modules, motor drivers, and sensor interfaces in factory automation cabinets. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 24V DC bus to clean, regulated 5V for microcontrollers and analog front-ends. Use Value: Delivers 1A at ±1.2% accuracy over –40°C to +125°C, ensuring consistent logic-level compatibility and ADC reference stability. |
Use Scenario: Generating 5V supply for RF transceiver control circuitry and FPGA configuration in 4G/5G small-cell base stations. IC Role / Device Role / Timing Role: High-efficiency buck converter powering low-noise analog and digital subsystems adjacent to sensitive RF sections. Use Value: Achieves >95% efficiency at full load and <50μA quiescent current in PFM mode, reducing thermal load and standby power. |
| Wall Transformer Regulation | High Voltage Single-Board Systems |
|
Use Scenario: Replacing linear regulators in AC/DC adapter secondary-side circuits where 36V input from bridge rectifier feeds 5V logic rails. IC Role / Device Role / Timing Role: Efficient DC-DC stage replacing inefficient 7805-style solutions, minimizing heat sink requirements. Use Value: Operates down to 4.5V input and up to 36V, tolerating wide line variations typical of unregulated wall transformer outputs. |
Use Scenario: Powering multiple 5V peripherals (USB, CAN, Ethernet PHYs) on high-voltage industrial PCBs with 24V/36V backplanes. IC Role / Device Role / Timing Role: Compact, thermally robust local regulator enabling distributed power architecture without external LDOs. Use Value: 3mm × 3mm TQFN package with EP allows dense placement; hiccup-mode OCP prevents cascading failures in multi-rail systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5V–65V input, 5V fixed output, 1A, 1.5MHz max fSW, AEC-Q100 qualified; no internal compensation - requires external loop components. | Automotive-grade qualification and higher VIN limit; lacks integrated compensation and RESET output. | Select LM5164QPWPRQ1 only if automotive qualification or >36V input is mandatory; MAX17630BATE+ offers simpler layout and tighter regulation. |
| TPS54202DRCT | 4.5V–28V input, adjustable output (0.6V–28V), 2A, 400kHz–2.5MHz fSW, integrated compensation; no hiccup-mode OCP or RESET. | Higher current rating and wider VIN range but requires external feedback resistors; lacks built-in power-good signaling. | Choose TPS54202DRCT when adjustable output or 2A capability is needed; MAX17630BATE+ provides plug-and-play 5V operation with system-level monitoring. |
Compared with LM5164QPWPRQ1 and TPS54202DRCT, the MAX17630BATE+ delivers superior ease-of-use for fixed 5V industrial applications through its internal compensation, integrated RESET, hiccup-mode protection, and guaranteed ±1.2% regulation across temperature - reducing BOM count and validation effort.
Availability
MAX17630BATE+ is available at Aetrix Electronics and suitable for industrial control power supplies, base station power supplies, and high-voltage single-board systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX17630BATE+ 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 industrial, communications, and computing applications.
The MAX17630 product line targets high-efficiency, wide-input industrial DC-DC conversion with integrated MOSFETs, internal compensation, and robust protection - specifically engineered for reliability in harsh environments.
FAQ
What is the output voltage tolerance of the MAX17630BATE+ over temperature?
The MAX17630BATE+ maintains ±1.2% feedback regulation accuracy over the full –40°C to +125°C ambient operating temperature range. This specification applies to the fixed 5.0V output version and is guaranteed by design and characterization, not just typical performance.
Can the MAX17630BATE+ operate with an input voltage lower than 4.5V?
No - the absolute minimum input voltage for the MAX17630BATE+ is 4.5V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation below this level may result in improper startup, regulation failure, or undefined behavior. The device shuts down when VIN drops below the EN/UVLO falling threshold (1.068–1.131V at the EN/UVLO pin).
Does the MAX17630BATE+ require external compensation components?
No - the MAX17630BATE+ includes fully integrated compensation circuitry optimized for its fixed 5V output configuration. No external RC networks are required for loop stability, simplifying layout and reducing bill-of-materials cost compared to adjustable buck controllers.
How does the RESET function work on the MAX17630BATE+?
The MAX17630BATE+ drives its open-drain RESET pin low when the FB voltage falls below 90.5–94.6% of its nominal 5.0V setpoint. RESET deasserts (goes high-impedance) 1024 switching cycles after FB rises above 93.8–97.8% of regulation - providing glitch-free power-good signaling for downstream processors or supervisors.
What is the purpose of the EXTVCC pin on the MAX17630BATE+?
The EXTVCC pin on the MAX17630BATE+ accepts an external 4.56–4.84V supply - typically the 5V output rail - to power the internal LDO's high-side driver circuitry. This reduces internal power dissipation and improves overall efficiency, especially at high input voltages where LDO dropout loss would otherwise dominate.
MAX17630BATE+ 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):
- 4.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 32.4V
- Current - Output:
- 1A
- Frequency - Switching:
- 400kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
MAX17630BATE+ FAQ
1.How can I place an order for MAX17630BATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17630BATE+ 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 MAX17630BATE+ reliable?
The price and inventory of MAX17630BATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17630BATE+ is usually 5 days.
3.What payment methods are accepted for MAX17630BATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17630BATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17630BATE+?
MAX17630BATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17630BATE+ 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 MAX17630BATE+?
For technical support, including MAX17630BATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17630BATE+ requirements.
6.How does Aetrix verify that MAX17630BATE+ is sourced from the original manufacturer or authorized distributors?
All MAX17630BATE+ 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 MAX17630BATE+ meets industry standards.
7.What is the process for return or replacement of MAX17630BATE+?
All MAX17630BATE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17630BATE+, 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 MAX17630BATE+ part is unused and in its original packaging.
Return procedure for MAX17630BATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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