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Analog Devices Inc./Maxim Integrated MAX17576ATG+
- Part No.:
- MAX17576ATG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX17576ATG+.pdf
- Description:
- IC REG BUCK ADJ 4A 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:465
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Product details
Overview
The MAX17576ATG+ from Analog Devices is a high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs, delivering up to 4A output current across a 4.5V–60V input range. It features peak-current-mode control, internal compensation, ±0.9% feedback regulation accuracy over –40°C to +125°C, and supports PWM/PEM/DCM modes - enabling compact, efficient power supplies for industrial control and base station applications.
For engineers reviewing the MAX17576ATG+ datasheet, MAX17576ATG+ pinout, MAX17576ATG+ application, or MAX17576ATG+ equivalent, this page delivers verified technical context, validated pin functions, real-world operating modes (including EXTVCC switchover and MODE/SYNC logic states), and precise thermal and efficiency data per load condition and switching frequency.
Technical Context
The MAX17576ATG+ implements a peak-current-mode architecture with an internal transconductance error amplifier, slope compensation, and dual-MOSFET gate drivers. Its control loop uses programmable soft-start (via SS capacitor), adjustable switching frequency (100kHz–2.2MHz via RT resistor), and mode selection (PWM/DCM/PFM) latched at power-up via MODE/SYNC pin state.
It integrates protection features including hiccup-mode overload response, monotonic startup with prebiased output, built-in output voltage monitoring with RESET assertion at FB <92% of setpoint, and thermal shutdown at 165°C with 10°C hysteresis - all specified for continuous operation across –40°C to +125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports wide-input industrial and telecom rails without external pre-regulation. |
| Output Current | Up to 4A continuous - enables single-chip point-of-load conversion for FPGA, DSP, or ASIC core supplies. |
| Feedback Accuracy | ±0.9% over –40°C to +125°C - ensures stable output regulation in harsh environments without trimming. |
| Switching Frequency | 100kHz to 2.2MHz (programmable via RT) - allows optimization of size (high fSW) vs. efficiency (low fSW). |
| Peak Efficiency | 94.8% - achieved with internal MOSFETs (RDS(on)H = 90–180mΩ, RDS(on)L = 55–110mΩ) and EXTVCC bypass. |
| Shutdown Current | 2.8µA - enables ultra-low-power system standby with EN/UVLO control. |
| Operating Temp Range | –40°C to +125°C ambient / +150°C junction - qualified for industrial and base station deployment. |
Pinout & Package
MAX17576ATG+ is housed in a 24-pin, 4mm × 5mm TQFN-EP package with exposed thermal pad (EP), optimized for high-power density and thermal dissipation (θJA = 24°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 23, 24 | LX | Switching node - connects directly to inductor; handles ±5.6A RMS current and fast voltage transitions (min tON = 60ns). |
| 2, 3, 11 | PGND | Power ground - low-impedance return path for high-current switching; must be tied to SGND at VCC bypass capacitor. |
| 5–7, 9 | IN | Main input supply - accepts 4.5V–60V; decoupled with two 4.7µF ceramics placed near pins. |
| 10 | EN/UVLO | Enable/undervoltage lockout - rising threshold 1.215V (typ), falling 1.09V (typ); sets turn-on VIN level via resistor divider. |
| 12 | VCC | 5V LDO output - powers internal circuitry; requires 2.2µF ceramic bypass; not for external loading. |
| 14 | RESET | Open-drain power-good - asserts low when FB falls below 92% of regulation; deasserts after 1024 cycles once FB >95%. |
| 15 | MODE/SYNC | Mode selection & sync input - open = PFM, SGND = PWM, VCC = DCM; accepts external clock 1.1–1.4× fSW. |
| 16 | SS | Soft-start - capacitor to SGND sets ramp time; reduces input inrush during startup. |
| 17 | CF | Compensation node - connect capacitor to FB if fSW ≤300kHz; leave open otherwise. |
| 18 | FB | Feedback input - monitors output via resistor divider; regulates to 0.9V (±0.9%) reference. |
| 19 | RT | Frequency programming - resistor to SGND sets fSW from 100kHz to 2.2MHz (e.g., 40.2kΩ = 500kHz). |
| 20 | EXTVCC | Auxiliary supply input - 4.84V–24V bypasses internal VCC LDO, improving efficiency and reducing heat. |
| 21 | SGND | Analog ground - reference for FB, SS, CF, MODE/SYNC; separate from PGND except at VCC bypass node. |
| 22 | BST | Bootstrap capacitor node - 0.1µF ceramic between BST and LX powers high-side gate driver. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Eliminates need for electrolytics or tantalums - improves reliability and lifetime in high-temp environments. |
| Internal compensation | Removes external RC network across full output voltage range (0.9V to 90% VIN) - simplifies layout and reduces BOM count. |
| Programmable EXTVCC switchover | Enables >94% peak efficiency by bypassing internal VCC LDO using external 4.84–24V supply - critical for high-power designs. |
| Hiccup-mode overload protection | Auto-retry shutdown during sustained overcurrent - prevents thermal runaway while maintaining system recoverability. |
| Monotonic startup with prebias | Guarantees controlled ramp even when output is precharged - avoids reverse current into downstream loads. |
| Three selectable operating modes | PWM (constant fSW), PFM (pulse skipping), DCM (discontinuous conduction) - lets designers trade off EMI, light-load efficiency, and transient response. |
Applications
| Industrial Control Power Supply | Base Station Power Supply |
|---|---|
|
Use Scenario: Providing isolated 5V/3.3V rails for PLC I/O modules and motor drive controllers operating from 24V or 48V DC bus. IC Role / Device Role / Timing Role: Primary buck regulator delivering regulated 4A output with hiccup-mode fault recovery and wide VIN tolerance. Use Value: Eliminates need for external pre-regulators and discrete MOSFETs - reduces solution size by >40% versus discrete controllers. |
Use Scenario: Generating 12V intermediate rail from 48V telecom rectifier for RF power amplifiers and fronthaul processors. IC Role / Device Role / Timing Role: High-efficiency, high-voltage step-down converter supporting 100kHz–2.2MHz switching to meet EMI requirements. Use Value: Achieves 94.8% peak efficiency at 4A with EXTVCC bypass - lowers thermal load in densely packed base station enclosures. |
| Wall Transformer Regulation | High-Voltage Single-Board System |
|
Use Scenario: Replacing linear regulators in universal-input AC/DC adapters powering IoT gateways and smart meters. IC Role / Device Role / Timing Role: Synchronous buck controller accepting 4.5V–60V input, delivering tightly regulated 3.3V/5V outputs. Use Value: Reduces no-load quiescent current to 2.8µA in shutdown - meets Energy Star Level VI standby power limits. |
Use Scenario: Powering multi-rail SoC subsystems (e.g., ARM Cortex-A + FPGA + DDR) on single-board computers used in edge AI inference. IC Role / Device Role / Timing Role: Core voltage regulator with RESET monitoring, soft-start, and thermal shutdown for system-level power sequencing. Use Value: Built-in RESET with 92%/95% FB thresholds provides reliable power-good signaling - eliminates need for external supervisor IC. |
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 | 40V max input, 0.5A output, no EXTVCC, fixed 500kHz fSW, AEC-Q100 qualified | Automotive body electronics only - lacks 60V rating and 4A capability for industrial/high-voltage use | Select only for automotive-grade 12V/24V systems requiring functional safety compliance. |
| MPQ4420AGL-A | 36V max input, 2A output, no MODE/SYNC pin, no internal compensation, requires external RC network | Cost-sensitive consumer power supplies - missing PFM/DCM modes and RESET functionality | Choose for lower-cost, lower-current applications where design simplicity outweighs efficiency and feature depth. |
Compared with LM5164QPWPRQ1 and MPQ4420AGL-A, the MAX17576ATG+ uniquely combines 60V input, 4A output, internal compensation, three operating modes, and EXTVCC bypass - making it the only option among the three capable of replacing discrete high-voltage buck solutions in industrial and telecom infrastructure.
Availability
MAX17576ATG+ is available at Aetrix Electronics and suitable for industrial control power supplies, base station power regulation, and high-voltage single-board systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17576ATG+ 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 is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX17576ATG+ belongs to the Himalaya series - designed specifically for cooler, smaller, and simpler high-voltage DC-DC power conversion in space-constrained, thermally demanding environments.
FAQ
What is the maximum input voltage supported by the MAX17576ATG+?
The MAX17576ATG+ supports an absolute maximum input voltage of +65V across IN-to-PGND, but its specified operational input range is 4.5V to 60V. Operation above 60V risks exceeding safe operating area limits and is not guaranteed. The device's robust UVLO (VENR = 1.215V typ) and thermal shutdown (165°C) provide protection within the rated range.
How does the MODE/SYNC pin configure operating modes on the MAX17576ATG+?
The MAX17576ATG+ latches MODE/SYNC state at power-up: open = PFM (pulse-frequency modulation), grounded = PWM (constant-frequency pulse-width modulation), connected to VCC = DCM (discontinuous conduction mode). External clock synchronization is enabled when a 1.1–1.4× fSW signal is applied - forcing PWM operation regardless of initial latch state.
Can the MAX17576ATG+ operate with a prebiased output voltage?
Yes, the MAX17576ATG+ supports monotonic startup with prebiased output voltages - confirmed in typical operating characteristics (Figures toc15–toc18). During startup, the device avoids reverse current flow and ensures controlled ramp-up even when VOUT is initially charged to 1.65V or 2.5V, making it suitable for hot-swap and redundant power systems.
What is the purpose of the EXTVCC pin on the MAX17576ATG+?
The EXTVCC pin on the MAX17576ATG+ accepts an external 4.84V–24V supply to bypass the internal VCC LDO, reducing power loss and die temperature. When active, it improves peak efficiency to 94.8% and lowers quiescent current - especially valuable in high-current, high-ambient-temperature applications like base station power supplies.
Does the MAX17576ATG+ include built-in protection features?
Yes, the MAX17576ATG+ integrates hiccup-mode overload protection with auto-retry, thermal shutdown at 165°C (10°C hysteresis), overvoltage protection via FB monitoring, and undervoltage lockout on EN/UVLO and VCC. These protections are fully specified across –40°C to +125°C and require no external components to implement.
MAX17576ATG+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-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):
- 60V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 4A
- Frequency - Switching:
- 100kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TQFN (4x5)
MAX17576ATG+ FAQ
1.How can I place an order for MAX17576ATG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17576ATG+ 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 MAX17576ATG+ reliable?
The price and inventory of MAX17576ATG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17576ATG+ is usually 5 days.
3.What payment methods are accepted for MAX17576ATG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17576ATG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17576ATG+?
MAX17576ATG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17576ATG+ 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 MAX17576ATG+?
For technical support, including MAX17576ATG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17576ATG+ requirements.
6.How does Aetrix verify that MAX17576ATG+ is sourced from the original manufacturer or authorized distributors?
All MAX17576ATG+ 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 MAX17576ATG+ meets industry standards.
7.What is the process for return or replacement of MAX17576ATG+?
All MAX17576ATG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17576ATG+, 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 MAX17576ATG+ part is unused and in its original packaging.
Return procedure for MAX17576ATG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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