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Analog Devices Inc./Maxim Integrated MAX17624ATA+
- Part No.:
- MAX17624ATA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX17624ATA+.pdf
- Description:
- IC REG BUCK ADJ 1A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:187
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Product details
Overview
MAX17624ATA+ from Maxim Integrated is a high-frequency synchronous step-down DC-DC converter with integrated MOSFETs, designed for point-of-load regulation in space-constrained systems. It operates from 2.9V to 5.5V input, delivers up to 1A output current, supports adjustable output voltage from 1.5V to 3.3V, and switches at a fixed 4MHz frequency - enabling compact 1µH inductor and small ceramic capacitor designs for battery-powered and industrial sensor applications.
For engineers reviewing the MAX17624ATA+ datasheet, MAX17624ATA+ pinout, MAX17624ATA+ application, or MAX17624ATA+ equivalent, key selection criteria include its 4MHz switching frequency, 1.5–3.3V output range, ±1% FB accuracy, PFM/PWM mode selectability, and thermal shutdown at 165°C - all critical for low-noise, high-density power delivery in portable and embedded systems.
Technical Context
The MAX17624ATA+ employs peak-current-mode control with internal compensation and fixed 4MHz oscillator, eliminating external loop components. Its architecture integrates high-side pMOS (100–160mΩ) and low-side nMOS (70–130mΩ) switches, enabling efficient 100% duty-cycle operation and prebias startup capability.
It features dual operating modes latched at power-up: grounding MODE enables forced-PWM for EMI-sensitive applications, while leaving MODE floating activates PFM for light-load efficiency. The device includes open-drain PGOOD with 91.5–95.5% rising threshold, 1ms soft-start, and cycle-by-cycle overcurrent protection with 2A (typ) peak limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.9V to 5.5V - supports single-cell Li-ion, USB, and standard 3.3V/5V rails without external LDO pre-regulation. |
| Output Voltage Range | 1.5V to 3.3V - factory-configured range for core logic, I/O, and analog subsystems in modern microcontrollers and sensors. |
| Switching Frequency | Fixed 4MHz - reduces inductor size to 1µH and enables >100kHz output ripple attenuation without additional filtering. |
| Max Output Current | 1A continuous - sufficient for FPGA I/O banks, ARM Cortex-M series MCUs, and multi-sensor nodes. |
| Feedback Accuracy | ±1% - ensures stable core voltage under load transients and temperature variation across -40°C to +125°C ambient. |
| Shutdown Current | 0.1µA (typ) - extends battery life in always-on monitoring devices by minimizing quiescent drain during sleep. |
| Junction Temp Limit | +165°C with 10°C hysteresis - provides robust thermal protection in sealed enclosures or high-power-density PCB layouts. |
Pinout & Package
MAX17624ATA+ is housed in an 8-pin, 2mm × 2mm TDFN package with exposed pad (EP) for thermal dissipation. The package uses RoHS-compliant lead-free finish and is rated for -40°C to +125°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Primary DC input connection; requires local 2.2µF ceramic decoupling to GND for high-frequency noise suppression. |
| 2 GND | Power Ground | Main return path for input/output currents; must connect to large ground plane and EP via multiple thermal vias. |
| 3 EN | Enable Control | Active-high logic input; ≥2V enables regulation with 1ms soft-start; ≤0.8V disables output and reduces IQ to 0.1µA. |
| 4 MODE | Operation Mode Select | Ground = forced-PWM (fixed 4MHz); open = PFM (pulse-skipping at light loads for higher efficiency). |
| 5 PGOOD | Power Good Status | Open-drain output asserting high when VOUT ≥93.5% of target; used for system sequencing and fault detection. |
| 6 FB | Feedback Input | Sense node for resistor-divider; sets output voltage per VOUT = 0.8V × (1 + R1/R2), with ±1% regulation accuracy. |
| 7 OUTSNS | Output Voltage Sense | Kelvin connection to COUT positive terminal - improves load regulation by rejecting PCB trace resistance error. |
| 8 LX | Switching Node | Connection to inductor switch node; carries high di/dt current - requires short, wide copper pour to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Internally Compensated Control Loop | Eliminates need for external compensation network - simplifies design and reduces BOM count for 10µF output capacitor stability. |
| Selectably Fixed-Frequency PWM or Light-Load PFM | Enables EMI compliance in noise-sensitive environments (PWM) or >85% efficiency at 10mA load (PFM), without firmware intervention. |
| 100% Duty-Cycle Operation | Allows VOUT regulation down to VIN – (IOUT × RDS_ONH), extending usable battery voltage range in single-cell Li-ion systems. |
| Prebias Startup Capability | Permits safe startup into existing output voltage without discharging downstream capacitors - essential for multi-rail digital systems. |
| Integrated Overcurrent & Thermal Protection | Combines valley/peak current limiting (1.2–2.5A thresholds) and 165°C thermal shutdown with 10°C hysteresis for reliable fault recovery. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Compact wireless sensor node measuring temperature, humidity, and pressure in factory automation. IC Role / Device Role / Timing Role: Primary 3.3V supply for ultra-low-power MCU, BLE radio, and analog front-end ADC. Use Value: 4MHz switching enables use of 1µH inductor and 10µF X7R output cap, reducing board area by >40% vs. 2MHz alternatives while maintaining <2% output ripple. | Use Scenario: Battery-powered wearable ECG monitor requiring long runtime and clinical-grade signal integrity. IC Role / Device Role / Timing Role: Regulates 1.8V analog supply for precision op-amps and 3.3V digital rail for microcontroller and display driver. Use Value: PFM mode achieves >90% efficiency at 50µA standby current, extending single CR2032 battery life beyond 6 months; ±1% FB accuracy ensures consistent ADC reference stability. |
| IoT Edge Gateway | Automotive Cabin Controller |
Use Scenario: Cellular-connected edge gateway aggregating data from multiple CAN/LIN subnodes in smart building infrastructure. IC Role / Device Role / Timing Role: Secondary 1.5V supply for ARM Cortex-A53 application processor I/O domain and DDR memory termination. Use Value: 1ms soft-start and prebias startup prevent brownout during hot-plug events; 85.3°C/W θJA allows full 1A load on 4-layer board without heatsink. | Use Scenario: Dashboard-mounted cabin controller managing HVAC, lighting, and infotainment interfaces in passenger vehicles. IC Role / Device Role / Timing Role: Point-of-load regulator for 2.5V camera image signal processor and 3.3V CAN transceiver interface. Use Value: -40°C to +125°C ambient rating and 165°C junction thermal shutdown meet AEC-Q100 Grade 2 requirements; PGOOD enables fail-safe system reset on undervoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6286418RTER | 4MHz, 1.8V fixed output, 0.6–5.5V input, 1A, but no PFM mode or OUTSNS pin. | Lacks Kelvin sensing and light-load efficiency optimization - less suitable for precision analog supplies. | Choose when fixed 1.8V output suffices and layout simplicity outweighs sensing accuracy needs. |
| MP2155GQZ-P | 4MHz, 1.5–3.3V adjustable, 2.5–5.5V input, 1A, but only ±2% FB accuracy and no prebias startup. | Higher output tolerance and missing prebias support limit use in multi-rail sequenced systems. | Prefer for cost-sensitive consumer applications where ±1% regulation and hot-plug robustness are non-critical. |
Compared with TPS6286418RTER and MP2155GQZ-P, the MAX17624ATA+ uniquely combines 4MHz operation, ±1% feedback accuracy, OUTSNS Kelvin sensing, and prebias startup - making it optimal for high-reliability, space-constrained industrial and medical power rails where output stability and system-level sequencing integrity are mandatory.
Availability
MAX17624ATA+ is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, IoT edge gateways, automotive cabin controllers, and distributed power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17624ATA+ 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 demanding industrial, medical, and communications applications.
The MAX17624ATA+ belongs to the Himalaya series of DC-DC converters - engineered specifically for cooler, smaller, and simpler power solutions in thermally constrained and space-limited embedded systems.
FAQ
What output voltage range does the MAX17624ATA+ support?
The MAX17624ATA+ supports an adjustable output voltage range from 1.5V to 3.3V, set via an external resistor divider connected to the FB pin. This range is distinct from the MAX17623ATA+, which covers 0.8V to 1.5V. The MAX17624ATA+'s 1.5–3.3V span targets I/O, interface, and analog subsystems in modern microcontrollers and sensors, with ±1% feedback accuracy ensuring tight regulation across temperature and load.
Does the MAX17624ATA+ support prebias startup?
Yes, the MAX17624ATA+ supports startup into a prebiased output without discharging the output capacitor - in both PFM and forced-PWM modes. This feature is critical for multi-rail digital systems where other regulators may already be active. The MAX17624ATA+ achieves this through internal control logic that monitors OUTSNS and FB during enable, allowing seamless integration into complex power sequencing architectures without external circuitry.
What is the switching frequency of the MAX17624ATA+ and why does it matter?
The MAX17624ATA+ operates at a fixed 4MHz switching frequency. This high frequency enables use of a compact 1µH inductor and small 10µF ceramic output capacitor, significantly reducing solution footprint and component height - ideal for ultra-thin portable and wearable devices. It also pushes switching noise beyond sensitive audio and RF bands, easing EMI filtering requirements compared to lower-frequency alternatives.
How does the MODE pin affect MAX17624ATA+ operation?
The MODE pin on the MAX17624ATA+ selects between two operating modes latched at power-up: grounding MODE enables forced-PWM (fixed 4MHz at all loads), while leaving MODE unconnected enables PFM (pulse-frequency modulation for improved light-load efficiency). Mode selection is not dynamic - changes after startup are ignored. This binary choice lets designers optimize for EMI control (PWM) or battery runtime (PFM) without firmware overhead.
What thermal protection features does the MAX17624ATA+ include?
The MAX17624ATA+ includes thermal shutdown with a rising threshold of +165°C and 10°C hysteresis, plus overcurrent protection with peak (2A typ) and valley (1.5A typ) current limits. When junction temperature exceeds 165°C, internal circuitry disables both MOSFETs and halts switching until temperature falls to 155°C. Combined with its 8.9°C/W junction-to-case thermal resistance and exposed pad thermal vias, this ensures reliable operation in sealed enclosures or high-power-density layouts without external thermal monitoring.
MAX17624ATA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Strip
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 1A
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX17624ATA+ FAQ
1.How can I place an order for MAX17624ATA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17624ATA+ 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 MAX17624ATA+ reliable?
The price and inventory of MAX17624ATA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17624ATA+ is usually 5 days.
3.What payment methods are accepted for MAX17624ATA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17624ATA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17624ATA+?
MAX17624ATA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17624ATA+ 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 MAX17624ATA+?
For technical support, including MAX17624ATA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17624ATA+ requirements.
6.How does Aetrix verify that MAX17624ATA+ is sourced from the original manufacturer or authorized distributors?
All MAX17624ATA+ 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 MAX17624ATA+ meets industry standards.
7.What is the process for return or replacement of MAX17624ATA+?
All MAX17624ATA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17624ATA+, 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 MAX17624ATA+ part is unused and in its original packaging.
Return procedure for MAX17624ATA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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