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Analog Devices Inc./Maxim Integrated MAX17576ATG+T
- Part No.:
- MAX17576ATG+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX17576ATG+T.pdf
- Description:
- IC REG BUCK ADJ 4A 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,335
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Product details
Overview
MAX17576ATG+T from Analog Devices is a Himalaya-series synchronous step-down DC-DC converter with integrated high-side and low-side MOSFETs, operating from 4.5V to 60V input and delivering up to 4A output current. It features ±0.9% feedback regulation accuracy over –40°C to +125°C, internal compensation across the full output-voltage range (0.9V to 90% of VIN), and peak efficiency of 94.8%. It is used in industrial control power supplies and high-voltage single-board systems requiring compact, thermally robust regulation.
For engineers reviewing the MAX17576ATG+T datasheet, MAX17576ATG+T pinout, MAX17576ATG+T application, or MAX17576ATG+T equivalent, key selection considerations include its 24-pin TQFN-EP package, programmable switching frequency (100kHz–2.2MHz), EN/UVLO threshold adjustability, PFM/DCM/PWM mode flexibility, and built-in RESET with 92–95% FB monitoring window.
Technical Context
The MAX17576ATG+T implements peak-current-mode control with an internal transconductance error amplifier, slope compensation, and cycle-by-cycle current limiting. Its architecture supports three distinct operating modes-PWM (constant-frequency, negative inductor current allowed), PFM (pulse-skipping, 1A typical peak current limit), and DCM (discontinuous conduction, valley-current limiting)-each selected at power-up via the MODE/SYNC pin state.
It integrates dual nMOS power switches (RDS(on)H = 90–180mΩ, RDS(on)L = 55–110mΩ), a 5V VCC LDO, auxiliary EXTVCC input for improved efficiency, and monotonic soft-start with external capacitor programming. The device includes hiccup-mode overload protection, thermal shutdown at 165°C with 10°C hysteresis, and open-drain RESET with 1024-cycle deassertion delay after FB reaches 95% regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports wide-range industrial and telecom inputs without pre-regulation. |
| Output Current | Up to 4A continuous - enables direct powering of FPGA I/O banks or microcontroller cores. |
| Feedback Accuracy | ±0.9% over –40°C to +125°C - ensures stable regulation in harsh ambient conditions. |
| Switching Frequency | 100kHz to 2.2MHz, adjustable via RT resistor - allows optimization of size vs. EMI performance. |
| Peak Efficiency | 94.8% - reduces thermal load and improves system-level power density. |
| Shutdown Current | 2.8µA - enables ultra-low-power standby in battery-backed or energy-harvesting systems. |
| Package | 24-pin TQFN-EP (4mm × 5mm) - provides low thermal resistance (θJA = 24°C/W) on multilayer PCBs. |
Pinout & Package
MAX17576ATG+T is housed in a 24-pin, 4mm × 5mm TQFN-EP package with exposed thermal pad (EP). The package supports high-power dissipation (3333mW at +70°C) and requires connection of EP to SGND via multiple thermal vias for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 23, 24 (LX) | Switching Node | Connects directly to inductor switch node; carries high di/dt current; must be routed with minimal loop area. |
| 2, 3, 11 (PGND) | Power Ground | High-current return path for MOSFETs and input capacitors; separate from analog ground (SGND) but tied at VCC bypass cap. |
| 5–7, 9 (IN) | Main Input Supply | Parallel pins accept 4.5V–60V input; require local 2×4.7µF ceramic decoupling to PGND. |
| 10 (EN/UVLO) | Enable & Input UVLO | Resistor-divider programmable turn-on threshold (1.19–1.26V rising); pull low to disable. |
| 12 (VCC) | Internal 5V LDO Output | Bypassed with 2.2µF ceramic; powers internal circuitry; not intended for external loading. |
| 14 (RESET) | Open-Drain Power-Good | Asserts low if FB falls below 92% of setpoint; deasserts 1024 cycles after FB rises above 95%. |
| 15 (MODE/SYNC) | Mode Control / Clock Sync | Configures PWM/DCM/PFM at startup; accepts external clock (1.1–1.4× fSW) for synchronization. |
| 16 (SS) | Soft-Start Timing | Capacitor-to-SGND sets ramp time; controls inrush current during startup. |
| 18 (FB) | Feedback Input | Monitors output via resistor divider; regulates to 0.9V reference with ±0.9% accuracy. |
| 19 (RT) | Frequency Programming | Resistor-to-SGND sets fSW from 100kHz to 2.2MHz; open for default 500kHz. |
| 20 (EXTVCC) | Auxiliary Supply Input | Accepts 4.84V–24V to bypass internal VCC LDO, improving light-load efficiency and reducing self-heating. |
| 21 (SGND) | Analog Ground | Reference for FB, SS, CF, MODE/SYNC; tied to PGND only at VCC bypass capacitor location. |
| 22 (BST) | Bootstrap Capacitor | Connects 0.1µF ceramic to LX; supplies gate drive voltage for high-side MOSFET. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High- and Low-Side MOSFETs | Eliminates need for external power switches and gate drivers, reducing BOM count and layout complexity. |
| Internal Compensation Across Full VOUT Range | Enables stable operation from 0.9V to 90% of VIN without external compensation components. |
| Programmable Soft-Start with External Capacitor | Prevents input inrush current and output overshoot during power-up, critical for hot-swap applications. |
| Three Operating Modes (PWM/DCM/PFM) | Allows trade-off between light-load efficiency (PFM/DCM) and EMI predictability (PWM) without hardware change. |
| Open-Drain RESET with Hysteresis | Provides reliable power-good signaling with 92–95% FB window and 1024-cycle delay, avoiding false toggling. |
| Thermal Shutdown with Hiccup Protection | Shuts down at 165°C junction temperature and auto-retries after cooldown, protecting against sustained overload. |
Applications
| Industrial Control Power Supplies | Base Station Power Supplies |
|---|---|
Use Scenario: Powering PLC I/O modules, motor drivers, and fieldbus interfaces in factory automation cabinets with 24V or 48V DC rails. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 48V backplane to 3.3V/5V for logic and communication ICs. Use Value: Wide 4.5V–60V input range accommodates brownout and surge conditions; 4A output supports multi-channel sensor aggregation. |
Use Scenario: Generating intermediate bus voltages (e.g., 12V, 5V) from 48V telecom rectifier outputs in 4G/5G remote radio units. IC Role / Device Role / Timing Role: Secondary-stage buck converter delivering regulated power to FPGAs, ADCs, and RF front-end bias circuits. Use Value: 94.8% peak efficiency minimizes heat generation in sealed enclosures; PFM mode extends standby runtime during low-traffic periods. |
| Distributed Supply Regulation | High-Voltage, Single-Board Systems |
Use Scenario: Local regulation on large PCBs with long power distribution traces, such as test equipment mainframes or medical imaging controllers. IC Role / Device Role / Timing Role: Distributed DC-DC converter placed near high-current loads to reduce IR drop and improve transient response. Use Value: Internal MOSFETs and all-ceramic capacitor support enable compact, low-profile layout; 2.2MHz max fSW allows use of sub-1µH inductors. |
Use Scenario: Powering SoC-based edge AI accelerators or high-performance microcontrollers operating from unregulated 24V–48V inputs on compact carrier boards. IC Role / Device Role / Timing Role: Primary regulator providing clean, tightly regulated core and I/O voltages with monotonic startup into prebiased outputs. Use Value: Monotonic startup and prebias compatibility prevent latch-up during hot-plug events; EXTVCC input improves efficiency when output voltage ≥5V. |
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 internal compensation, requires external loop compensation components. | Targeted at automotive body electronics with AEC-Q100 qualification; lacks hiccup protection and RESET output. | Select when AEC-Q100 compliance is mandatory and output current ≤0.5A; avoid for 4A industrial loads or where internal compensation is required. |
| MPQ4420AGL-A | 36V max input, 2A output, fixed 500kHz fSW, no EXTVCC or MODE/SYNC pin; lower integration level. | Designed for cost-sensitive consumer and computing applications; lacks programmable UVLO, soft-start, and thermal hysteresis. | Choose for simpler, lower-current designs where 2A output suffices and advanced features like PFM/DCM mode selection are unnecessary. |
Compared with LM5164QPWPRQ1 and MPQ4420AGL-A, the MAX17576ATG+T delivers higher current (4A), wider input (60V), internal compensation, and richer system-monitoring features (RESET, hiccup, monotonic start), making it suitable for demanding industrial and telecom infrastructure designs.
Availability
MAX17576ATG+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 RoHS-compliant packaging.
Supply support for MAX17576ATG+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 technologies, headquartered in Wilmington, MA.
The MAX17576ATG+T belongs to the Himalaya power management family, designed specifically for cooler, smaller, and simpler high-voltage DC-DC solutions in industrial, telecom, and embedded systems where reliability and thermal performance are critical.
FAQ
What is the maximum input voltage rating for the MAX17576ATG+T?
The MAX17576ATG+T has an absolute maximum input voltage rating of +65V across IN to PGND, but its specified operational input range is 4.5V to 60V. Operation beyond 60V may cause permanent damage or violate safety margins defined in the Absolute Maximum Ratings table. For reliable long-term operation, design within the 4.5V–60V range and ensure proper derating under transient conditions.
Does the MAX17576ATG+T support output voltage regulation below 1V?
No, the MAX17576ATG+T does not support output voltages below 0.9V. Its feedback reference voltage is 0.9V, and the datasheet specifies programmable output range from 0.9V up to 90% of VIN. Attempting to set VOUT < 0.9V results in loss of regulation, as the internal error amplifier cannot drive the output lower than the reference threshold.
Can the MAX17576ATG+T operate with a prebiased output voltage during startup?
Yes, the MAX17576ATG+T supports monotonic startup into a prebiased output. When the output voltage is already present at startup (e.g., from another rail or hold-up capacitor), the device avoids reverse current flow and ramps the output smoothly without undershoot or oscillation - a key feature confirmed in Figures toc15–toc18 of the datasheet.
How is the switching frequency programmed on the MAX17576ATG+T?
The switching frequency of the MAX17576ATG+T is programmed using an external resistor (RRT) connected from the RT pin to SGND. Values from 8.06kΩ to 210kΩ set fSW from 2.2MHz down to 100kHz; an open RT pin defaults to ~500kHz. The relationship is nonlinear and documented in Figure toc13, with tolerance affected by RRT accuracy and temperature drift.
What is the purpose of the EXTVCC pin on the MAX17576ATG+T?
The EXTVCC pin on the MAX17576ATG+T accepts an external 4.84V–24V supply to bypass the internal VCC LDO, reducing power dissipation and improving light-load efficiency. When used, it requires a 0.1µF bypass capacitor and a 4.7Ω series resistor from VOUT to limit discharge current during short-circuit events - directly enhancing thermal performance in high-efficiency designs.
MAX17576ATG+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-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):
- 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+T FAQ
1.How can I place an order for MAX17576ATG+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17576ATG+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 MAX17576ATG+T reliable?
The price and inventory of MAX17576ATG+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17576ATG+T is usually 5 days.
3.What payment methods are accepted for MAX17576ATG+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17576ATG+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17576ATG+T?
MAX17576ATG+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17576ATG+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 MAX17576ATG+T?
For technical support, including MAX17576ATG+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17576ATG+T requirements.
6.How does Aetrix verify that MAX17576ATG+T is sourced from the original manufacturer or authorized distributors?
All MAX17576ATG+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 MAX17576ATG+T meets industry standards.
7.What is the process for return or replacement of MAX17576ATG+T?
All MAX17576ATG+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17576ATG+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 MAX17576ATG+T part is unused and in its original packaging.
Return procedure for MAX17576ATG+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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