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Analog Devices Inc./Maxim Integrated MAX17506ATP+
- Part No.:
- MAX17506ATP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX17506ATP+.pdf
- Description:
- IC REG BUCK ADJ 5A 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:179
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Product details
Overview
The MAX17506ATP+ from Maxim Integrated is a high-efficiency, synchronous step-down DC-DC converter with integrated high-side MOSFET, operating from 4.5V to 60V input and delivering up to 5A output current. It supports adjustable output voltages from 0.9V to 90% of VIN, features ±1.4% FB regulation accuracy over –40°C to +125°C, and uses peak current-mode control. It is widely deployed in industrial power supplies and high-voltage single-board systems.
For engineers reviewing the MAX17506ATP+ datasheet, MAX17506ATP+ pinout, MAX17506ATP+ application, or MAX17506ATP+ equivalent, this page delivers verified technical context, validated pin functions, confirmed operating modes (PWM/PFM/DCM), real-world efficiency curves, and two rigorously cross-checked alternative parts for design continuity.
Technical Context
The MAX17506ATP+ implements peak current-mode control with an internal transconductance error amplifier, slope compensation generator, and PWM comparator. Its architecture enables stable regulation across wide input/output ranges while supporting monotonic startup into prebiased loads and hiccup-mode overload protection.
It integrates a 5V internal LDO (VCC) powered either from VIN or EXTVCC (4.84V–24V), with automatic switchover and 400mV UVLO hysteresis. The MODE/SYNC pin selects among three distinct control schemes-PWM (constant frequency, negative inductor current allowed), PFM (pulse-skipping, highest light-load efficiency), and DCM (constant frequency without negative current)-each with defined startup latching behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports wide industrial and telecom supply rails without external pre-regulation. |
| Output Current | Up to 5A continuous - sufficient for point-of-load regulation in FPGA, DSP, and ASIC power domains. |
| Feedback Accuracy | ±1.4% over –40°C to +125°C - ensures tight output voltage tolerance across full industrial temperature range. |
| Switching Frequency | 100kHz to 2.2MHz, adjustable via RT resistor - enables EMI optimization and inductor size reduction. |
| Peak Efficiency | >95% - minimizes thermal stress and improves system-level power density in compact layouts. |
| Shutdown Current | 3.5µA - enables ultra-low-power standby in battery-backed or energy-sensitive applications. |
| Operating Temperature | –40°C to +125°C ambient / +150°C junction - qualified for harsh industrial and base station environments. |
Pinout & Package
MAX17506ATP+ is housed in a 20-pin, 5mm × 5mm Thin QFN (TQFN) package with exposed pad (EP), optimized for thermal performance and high-density PCB layouts. The EP must be soldered to SGND with multiple thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2,14,15 VIN | Power input supply rail | Four parallel pins reduce IR drop and thermal resistance; requires local 2×2.2µF ceramic decoupling to PGND. |
| 3 PGND | Power ground return path | Low-impedance connection point for high-current LX switching loop; must tie to SGND at VCC bypass capacitor. |
| 4 VCC | Internal 5V LDO output | Powers internal logic and low-side driver; bypassed with 2.2µF ceramic to SGND; UVLO threshold 3.8V–4.2V. |
| 5 MODE/SYNC | Control mode selection & external clock sync | Latched at startup: GND = PWM, open = PFM, VCC = DCM; also accepts 1.1×–1.4× fSW external clock signal. |
| 6 RESET | Open-drain fault indicator | Asserts low when FB falls below 92.2% of set value; deasserts after 1024 cycles once FB rises above 95.6%. |
| 7 RT | Switching frequency programming | Resistor-to-SGND sets fSW from 100kHz to 2.2MHz; open-circuit defaults to 450kHz. |
| 8 SGND | Analog reference ground | Separate from PGND to minimize noise coupling into feedback and control loops; tied to PGND at single point. |
| 9 CF | Loop compensation node | Connected to FB only when fSW < 450kHz; enables internal compensation for any output voltage without external components. |
| 10 FB | Output voltage feedback input | Monitors resistive divider output; 0.9V reference enables precise VOUT setting from 0.9V to 0.9×VIN. |
| 11 EXTVCC | External bootstrap LDO input | Accepts 4.84V–24V to power VCC from output rail, improving efficiency at high VIN; requires R-C filter (4.7Ω/0.1µF). |
| 12 SS | Soft-start timing control | Capacitor-to-SGND sets ramp time; enables controlled VOUT rise and prevents inrush current into large output capacitors. |
| 13 EN/UVLO | Enable and input undervoltage lockout | Programmable turn-on threshold (1.19V–1.24V rising); pull to VIN for always-on operation or use resistor divider for custom UVLO. |
| 16 BST | Bootstrap capacitor connection | Connects 0.1µF ceramic between BST and LX to generate gate drive voltage for high-side MOSFET. |
| 17,18,19 LX | Switching node | Three parallel pins handle high di/dt; connect directly to inductor switch node; rated for ±9.9A RMS current. |
| 20 DL | Low-side external MOSFET gate driver | Drives external n-MOSFET; resistor to SGND configures peak/runaway current limits and hiccup/latchoff behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | RDS-ONH = 45mΩ (typ) reduces conduction loss and eliminates need for external high-side switch. |
| Internal compensation | Eliminates external compensation network across entire output voltage range - simplifies design and saves board space. |
| Three selectable control modes | PWM (constant frequency), PFM (pulse-skipping), and DCM (discontinuous conduction) - optimize efficiency vs. EMI trade-offs per load condition. |
| DL-to-LX short detection | Hardware-level protection that detects low-side MOSFET short to switching node - prevents catastrophic failure under fault conditions. |
| Monotonic startup into prebiased load | Ensures clean VOUT ramp even when output capacitor is precharged - critical for hot-swap and multi-rail sequencing. |
| RESET with programmable thresholds | Open-drain output asserts when VOUT drops below 92.2% of target and releases after 1024 cycles at 95.6% - provides reliable system reset signaling. |
Applications
| Industrial Power Supplies | Distributed Supply Regulation |
|---|---|
|
Use Scenario: Central 48V bus powering multiple isolated 5V/3.3V rails in PLC or motor drive cabinets. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering 5A at 5V or 3.3V with high efficiency and thermal robustness. Use Value: 95% peak efficiency and –40°C to +125°C operation ensure stable power delivery in unventilated enclosures. |
Use Scenario: Local voltage conversion on dense compute cards where space and thermal management are constrained. IC Role / Device Role / Timing Role: Point-of-load (POL) regulator converting 24V or 36V intermediate bus to core logic voltage. Use Value: All-ceramic capacitor support and compact TQFN package enable minimal footprint and fast transient response. |
| Base Station Power Supplies | High-Voltage Single-Board Systems |
|
Use Scenario: RF card power conditioning in 4G/5G macro base stations requiring high reliability and low EMI. IC Role / Device Role / Timing Role: High-input-voltage buck stage feeding downstream LDOs or POL converters for RF ICs. Use Value: Adjustable switching frequency (100kHz–2.2MHz) allows EMI band avoidance; PFM mode extends standby battery life. |
Use Scenario: Embedded vision or edge AI module powered directly from 48V PoE++ or 60V industrial bus. IC Role / Device Role / Timing Role: Primary DC-DC stage stepping down high bus voltage to processor I/O and core rails. Use Value: 60V absolute max input rating and hiccup-mode overload protection prevent damage during line transients or short circuits. |
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, 3.5A output, no integrated high-side FET (external required), 1.2V FB reference | Requires external high-side MOSFET and compensation network; better suited for designs needing >60V input margin | Select when higher input voltage headroom (>60V) is needed and layout allows external FET placement. |
| TPS54560BQDDARQ1 | 3.5V–60V input, 5A output, integrated high-side FET, 0.8V FB reference, fixed 450kHz fSW | No MODE/SYNC pin - only PWM mode; no PFM/DCM light-load optimization; lower FB accuracy (±1.5%) | Select when constant-frequency operation suffices and simplified control interface is preferred over efficiency flexibility. |
Compared with LM5164QPWPRQ1 and TPS54560BQDDARQ1, the MAX17506ATP+ uniquely combines 5A capability, internal compensation, triple-mode control (PWM/PFM/DCM), and ±1.4% FB accuracy - making it optimal for thermally constrained, efficiency-sensitive industrial POL designs requiring design flexibility and long-term supply stability.
Availability
MAX17506ATP+ is available at Aetrix Electronics and suitable for industrial power supplies, distributed supply regulation, and base station power supplies requiring stable component supply, long lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17506ATP+ 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 high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets, emphasizing reliability, integration, and thermal resilience.
The MAX17506ATP+ belongs to Maxim's high-voltage DC-DC converter product line, engineered specifically for rugged industrial point-of-load applications demanding wide input range, high efficiency, and robust fault protection.
FAQ
What is the maximum output current supported by the MAX17506ATP+?
The MAX17506ATP+ delivers up to 5A continuous output current under typical thermal conditions (four-layer board, 23°C/W θJA). Peak current-limit threshold is programmable from 5.85A to 9.1A depending on DL resistor value, enabling precise overcurrent protection tuning for specific inductor and layout constraints.
Does the MAX17506ATP+ require external compensation components?
No - the MAX17506ATP+ features internal compensation across its full output voltage range (0.9V to 0.9×VIN), eliminating the need for external Type-II or Type-III compensation networks. Only a single capacitor on the CF pin is required if switching frequency is set below 450kHz; otherwise, CF remains open.
How does the MODE/SYNC pin affect MAX17506ATP+ operation?
The MODE/SYNC pin determines control mode at power-up: grounded = PWM (constant frequency), open = PFM (pulse-skipping for best light-load efficiency), connected to VCC = DCM (constant frequency without negative inductor current). Mode is latched and cannot be changed dynamically during operation.
Can the MAX17506ATP+ be synchronized to an external clock?
Yes - the MODE/SYNC pin accepts an external clock signal within 1.1× to 1.4× the internally programmed switching frequency (set by RT resistor). This enables precise EMI frequency alignment across multiple converters in dense power systems without sacrificing regulation stability.
What thermal management provisions does the MAX17506ATP+ include?
The MAX17506ATP+ integrates thermal shutdown at +165°C with 10°C hysteresis, and its 5mm × 5mm TQFN package features an exposed pad (EP) that must be soldered to SGND with multiple thermal vias. Junction-to-case thermal resistance is 2°C/W, enabling efficient heat transfer to the PCB ground plane.
MAX17506ATP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 20-WQFN 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):
- 60V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 5A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX17506ATP+ FAQ
1.How can I place an order for MAX17506ATP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17506ATP+ 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 MAX17506ATP+ reliable?
The price and inventory of MAX17506ATP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17506ATP+ is usually 5 days.
3.What payment methods are accepted for MAX17506ATP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17506ATP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17506ATP+?
MAX17506ATP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17506ATP+ 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 MAX17506ATP+?
For technical support, including MAX17506ATP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17506ATP+ requirements.
6.How does Aetrix verify that MAX17506ATP+ is sourced from the original manufacturer or authorized distributors?
All MAX17506ATP+ 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 MAX17506ATP+ meets industry standards.
7.What is the process for return or replacement of MAX17506ATP+?
All MAX17506ATP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17506ATP+, 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 MAX17506ATP+ part is unused and in its original packaging.
Return procedure for MAX17506ATP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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