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Analog Devices Inc./Maxim Integrated MAX17524ATJ+
- Part No.:
- MAX17524ATJ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX17524ATJ+.pdf
- Description:
- IC REG BUCK ADJ 3A DL 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:184
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Product details
Overview
The MAX17524ATJ+ from Maxim Integrated is a dual-channel, synchronous step-down DC-DC converter with integrated high-side MOSFETs, delivering up to 3A per channel across a 4.5V–60V input range. It supports adjustable output voltages from 0.9V to 90% of VIN, features ±1.4% feedback regulation accuracy over –40°C to +125°C, and operates in PWM/PEM/DCM modes for light-load efficiency-used in industrial control power supplies and high-voltage single-board systems.
For engineers reviewing the MAX17524ATJ+ datasheet, MAX17524ATJ+ pinout, MAX17524ATJ+ application, or MAX17524ATJ+ equivalent, this page delivers verified electrical specs, validated dual-output timing behavior, confirmed TQFN-32 package layout, and real-world thermal performance data under industrial ambient conditions.
Technical Context
The MAX17524ATJ+ implements peak current-mode control with independent error amplifiers, slope compensation, and dual PWM comparators per channel-enabling stable regulation across wide VIN and load transients. Each channel includes internal compensation, programmable soft-start, monotonic startup with prebiased output support, and hiccup-mode overload protection.
It integrates two 5V LDOs (VCC1/VCC2), dual EXTVCC inputs for auxiliary bootstrap supply, independent EN/UVLO and MODE/SYNC pins, and open-drain RESET outputs with 92.5% undervoltage trip and 95.5% release thresholds-supporting robust sequencing and fault monitoring in distributed power architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - enables direct operation from 12V/24V/48V industrial rails and battery stacks without pre-regulation. |
| Output Current per Channel | Up to 3A continuous - supports dual-rail point-of-load conversion for FPGAs, DSPs, or multi-core processors. |
| Feedback Regulation Accuracy | ±1.4% over –40°C to +125°C - ensures stable voltage delivery in harsh industrial environments without external trimming. |
| Switching Frequency Range | 100kHz to 1.1MHz (adjustable via RT resistor or external sync) - allows EMI optimization and inductor size reduction. |
| Peak Efficiency | 94.4% - achieved at mid-load in PWM mode, minimizing thermal stress in compact enclosures. |
| Shutdown Current | 5.2μA - enables ultra-low-power standby in always-on systems like remote sensors or gateways. |
| Operating Junction Temp | –40°C to +150°C - rated for extended reliability in sealed industrial enclosures or base station cabinets. |
Pinout & Package
Package: 32-pin Thin QFN (TQFN), 5mm × 5mm, exposed pad (EP). Thermal resistance θJA = 23°C/W (4-layer board), θJC = 1.7°C/W - requires SGND-connected EP with multiple thermal vias for full 3A/channel derating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Independent input power rails | Enable separate sourcing for each 3A buck channel-supports asymmetric input configurations (e.g., 24V on CH1, 48V on CH2). |
| LX1, LX2 | Switching node outputs | Drive external inductors; total RMS current rating 4.8A per LX - mandates low-ESR ceramic output caps and careful layout to minimize ringing. |
| BST1, BST2 | Bootstrap capacitor terminals | Require 0.1μF ceramic cap between BSTx and LXx - critical for high-side gate drive integrity above 10V VIN. |
| EN/UVLO1, EN/UVLO2 | Enable & input UVLO inputs | Programmable turn-on threshold (1.19V–1.245V rising); supports resistor-divider biasing or direct tie-to-IN for always-on operation. |
| RESET1, RESET2 | Open-drain power-good outputs | Assert low when FBx drops below 92.5% of setpoint; deassert after 1024 cycles above 95.5% - enables sequenced system reset without external logic. |
| MODE/SYNC1, MODE/SYNC2 | Mode selection & clock sync | Select PWM (tie to SGND), PFM (open), or DCM (tie to VCCx); also accepts external 1.1×–1.4× fSW sync signal for noise-sensitive applications. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diodes-reduces conduction loss and improves efficiency at high currents. |
| Internal compensation | Removes need for external Type-II/III compensation networks-simplifies layout and reduces BOM count. |
| Independent soft-start (SS1/SS2) | Capacitor-programmable ramp time prevents inrush current during power-up of sensitive downstream loads. |
| Auxiliary EXTVCC inputs | Bypass internal LDOs using regulated output voltage-cuts VCC losses and boosts overall efficiency by ~2–3%. |
| Monotonic startup with prebias | Guarantees controlled voltage ramp even when output is precharged-prevents reverse current into powered subsystems. |
| Hiccup-mode OCP | Auto-retries after overload clears-avoids latch-off failures during momentary shorts or inrush events. |
Applications
| Industrial Control Power Supplies | General-Purpose Point-of-Load |
|---|---|
Use Scenario: Powering PLC I/O modules, motor drivers, and analog sensor front-ends in factory automation cabinets. IC Role / Device Role / Timing Role: Dual 3A buck regulator providing isolated 5V and 3.3V rails from 24V DC bus with independent sequencing and RESET monitoring. Use Value: ±1.4% regulation accuracy and –40°C to +125°C operation ensure reliable uptime in uncooled control panels. | Use Scenario: Supplying FPGA core, I/O, and transceiver banks requiring tightly regulated, low-noise dual-rail power. IC Role / Device Role / Timing Role: Synchronous step-down converter delivering 3A @ 1.2V and 3A @ 3.3V with programmable soft-start and hiccup OCP. Use Value: Internal compensation and all-ceramic capacitor support enable compact, low-profile PCB designs with minimal layout iterations. |
| Distributed Supply Regulation | Base Station Power Supplies |
Use Scenario: Local regulation on remote radio unit (RRU) boards fed from centralized 48V backplane. IC Role / Device Role / Timing Role: High-input-voltage dual buck converting 48V to 12V and 5V with EXTVCC-assisted efficiency and external clock synchronization. Use Value: 94.4% peak efficiency and 1.1MHz max switching frequency reduce heat dissipation and filter component size in space-constrained RRUs. | Use Scenario: Powering digital signal processors, ADCs, and RF front-end ICs in 5G macro base stations. IC Role / Device Role / Timing Role: Dual 3A converter generating 1.8V and 3.3V rails with independent RESET assertion and thermal shutdown at 165°C. Use Value: Hiccup-mode overload protection and monotonic startup prevent brownouts during burst-mode RF transmission cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5143AQPWPRQ1 | Automotive AEC-Q100 qualified; 6.5V–60V input; 3A per channel; no internal compensation; requires external loop compensation. | Targeted for automotive ADAS and infotainment; lacks independent EXTVCC and RESET deassertion hysteresis. | Choose LM5143AQPWPRQ1 only if AEC-Q100 compliance is mandatory and design team has loop compensation expertise. |
| TPS544B25RTER | 4.5V–18V input; 4A per channel; PMBus interface; integrated MOSFETs; requires external compensation; smaller 4mm × 4mm QFN. | Designed for server VR13/IMVP8 compliance; lacks high-voltage capability and industrial temperature range. | Choose TPS544B25RTER for datacenter applications needing telemetry and tighter voltage margins-not for 48V industrial use. |
Compared with LM5143AQPWPRQ1 and TPS544B25RTER, the MAX17524ATJ+ uniquely combines 60V input tolerance, internal compensation, dual independent RESET outputs, and full –40°C to +125°C operation-making it optimal for ruggedized industrial and telecom infrastructure where layout simplicity and thermal resilience are critical.
Availability
The MAX17524ATJ+ is available at Aetrix Electronics and suitable for industrial control power supplies, distributed supply regulation, and base station power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX17524ATJ+ 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, automotive, and communications markets.
The MAX17524ATJ+ belongs to Maxim's high-voltage DC-DC converter product line, engineered specifically for robust, dual-rail power conversion in harsh environments-emphasizing wide VIN, internal compensation, and comprehensive fault protection.
FAQ
What is the maximum input voltage supported by the MAX17524ATJ+?
The MAX17524ATJ+ supports an absolute maximum input voltage of 65V on its IN1 and IN2 pins, with guaranteed operation across 4.5V to 60V. This wide range allows direct connection to 48V industrial buses, telecom -48V systems (with proper polarity handling), and high-cell-count battery packs without intermediate regulation stages.
Does the MAX17524ATJ+ require external compensation components?
No-the MAX17524ATJ+ features fully internal compensation for both channels, eliminating the need for external Type-II or Type-III compensation networks. This simplifies PCB layout, reduces BOM count, and accelerates design validation-though CF1 and CF2 pins remain accessible for optional external compensation at frequencies below 450kHz.
How does the MAX17524ATJ+ handle light-load efficiency?
The MAX17524ATJ+ achieves high light-load efficiency through selectable operating modes: PFM (pulse-frequency modulation) for ultra-low quiescent current (~1.4mA), DCM (discontinuous conduction mode) for reduced switching losses, and PWM for constant-frequency noise control. Mode selection is per-channel via MODE/SYNC1 and MODE/SYNC2 pins.
Can the MAX17524ATJ+ be synchronized to an external clock?
Yes-the MAX17524ATJ+ supports external clock synchronization on both channels independently via MODE/SYNC1 and MODE/SYNC2 pins. It accepts sync pulses within 1.1× to 1.4× the internal switching frequency (e.g., 495kHz–630kHz for default 450kHz operation), enabling EMI reduction in noise-sensitive systems like medical imaging or test equipment.
What thermal performance can be expected from the MAX17524ATJ+ in a standard 4-layer PCB?
On a standard 4-layer board with proper thermal vias to SGND under the exposed pad, the MAX17524ATJ+ exhibits θJA = 23°C/W. At full 3A/channel load and 24V input, junction temperature rise is ~65°C above ambient-well within the +150°C max rating, provided ambient stays ≤ +85°C. Derating begins above +70°C ambient at 34.5mW/°C.
MAX17524ATJ+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 3A
- Frequency - Switching:
- 100kHz ~ 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN (5x5)
MAX17524ATJ+ FAQ
1.How can I place an order for MAX17524ATJ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17524ATJ+ 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 MAX17524ATJ+ reliable?
The price and inventory of MAX17524ATJ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17524ATJ+ is usually 5 days.
3.What payment methods are accepted for MAX17524ATJ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17524ATJ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17524ATJ+?
MAX17524ATJ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17524ATJ+ 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 MAX17524ATJ+?
For technical support, including MAX17524ATJ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17524ATJ+ requirements.
6.How does Aetrix verify that MAX17524ATJ+ is sourced from the original manufacturer or authorized distributors?
All MAX17524ATJ+ 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 MAX17524ATJ+ meets industry standards.
7.What is the process for return or replacement of MAX17524ATJ+?
All MAX17524ATJ+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17524ATJ+, 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 MAX17524ATJ+ part is unused and in its original packaging.
Return procedure for MAX17524ATJ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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