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Analog Devices Inc./Maxim Integrated MAXM17624AMB+
- Part No.:
- MAXM17624AMB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 10-SMD Module
- Datasheet:
-
MAXM17624AMB+.pdf
- Description:
- IC REG BUCK ADJ 1A 10EMGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,419
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Product details
Overview
MAXM17624AMB+ from Maxim Integrated is a Himalaya-series synchronous step-down DC-DC power module integrating MOSFETs, compensation circuitry, and a 1µH inductor in a compact uSLIC™ package. It operates from 2.9V to 5.5V input, delivers up to 1A output current, supports adjustable 1.5V–3.3V output voltage with ±1% feedback accuracy, and runs at a fixed 4MHz switching frequency-enabling high-density point-of-load regulation for battery-powered and industrial sensor systems.
For engineers reviewing the MAXM17624AMB+ datasheet, MAXM17624AMB+ pinout, MAXM17624AMB+ application, or MAXM17624AMB+ equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters (including PFM/PWM mode behavior, 1ms soft-start, and open-drain PGOOD), and real-world design implications for thermal management, capacitor selection, and prebias startup.
Technical Context
The MAXM17624AMB+ employs peak-current-mode control with internal slope compensation and a fixed 4MHz oscillator. Its control loop uses an internally compensated error amplifier comparing FB voltage (0.8V reference) against a resistor-divider output, generating PWM duty cycle via current-sense and slope-compensation summation.
It implements dual-mode operation: MODE pin grounded enables forced-PWM (fixed frequency, negative inductor current allowed); unconnected MODE enables PFM (pulse-skipping, no reverse current, higher light-load efficiency). Overcurrent protection triggers at 1.7A (typ) peak inductor current, with thermal shutdown at +165°C and 10°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.9V to 5.5V - supports single-cell Li-ion, USB 5V, and standard logic rails without external LDO pre-regulation. |
| Output Voltage Range | 1.5V to 3.3V - set via external resistor divider on FB pin; covers core voltages for microcontrollers, FPGAs, and analog ICs. |
| Max Output Current | 1A continuous - sufficient for SoC cores, DSPs, and sensor signal chains in space-constrained designs. |
| Switching Frequency | Fixed 4MHz (±4%) - enables use of ultra-small ceramic capacitors and minimizes output ripple without requiring large LC filters. |
| Feedback Accuracy | ±1% over temperature - ensures stable regulation across -40°C to +125°C ambient, critical for industrial and automotive edge nodes. |
| Soft-Start Time | 1ms typical - prevents inrush current into downstream capacitance, eliminating need for external soft-start circuitry. |
| Shutdown Current | 0.1µA typical - supports ultra-low-power sleep modes in battery-operated IoT endpoints. |
Pinout & Package
MAXM17624AMB+ is housed in a 10-pin, 2.6mm × 2.1mm × 1.3mm uSLIC™ package (package code MA102A2+1), featuring integrated inductor and thermally enhanced PGND/SGND separation for efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LX | Switching node | Internal connection to integrated inductor and MOSFET bridge; no external component required-reduces layout complexity and EMI risk. |
| 2 OUTSNS | Output voltage sense | Kelvin connection point for remote sensing; improves load regulation by rejecting PCB trace IR drop in high-current paths. |
| 3 FB | Feedback input | Connects to center tap of external resistor divider; sets output voltage with 0.8V internal reference and ±1% accuracy. |
| 4 PGOOD | Open-drain power-good indicator | Signals valid regulation (≥93.5% VOUT) after 184µs post-soft-start; enables sequencing or fault monitoring without external comparators. |
| 5 MODE | Operating mode select | Ground = forced-PWM (fixed 4MHz); floating = PFM (pulse-skipping for >90% efficiency at <10mA loads). |
| 6 OUT | Power output | Main regulated output terminal; connects directly to COUT and load-designed for low-impedance path to minimize voltage droop. |
| 7 EN | Enable control | Active-high logic input (2V threshold); controls full power-up/down sequence including soft-start and shutdown current reduction to 0.1µA. |
| 8 SGND | Signal ground | Reference for FB, MODE, PGOOD, and EN; must be tied to PGND at single point near IN capacitor to avoid noise coupling. |
| 9 PGND | Power ground | High-current return path for inductor and MOSFETs; requires solid copper pour for thermal and EMI performance. |
| 10 IN | Input supply | Accepts 2.9V–5.5V; requires local 2.2µF ceramic decoupling to PGND placed adjacent to pin for stable high-frequency operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1µH inductor | Eliminates external magnetics, reduces BOM count by ≥4 components, and guarantees consistent inductance tolerance (±20%) and saturation current. |
| Internally compensated control loop | Removes need for external compensation network-simplifies design validation and eliminates stability tuning across input/output/load conditions. |
| Prebias startup capability | Allows safe ramp-up into existing output voltage (e.g., multi-rail SoCs), preventing reverse current flow and avoiding output capacitor discharge. |
| 100% duty-cycle operation | Enables dropout operation down to VIN – VOUT ≈ 0V, supporting applications where input may dip close to output voltage (e.g., Li-ion end-of-discharge). |
| JESD22-B103/B104/B111 qualified | Validated for mechanical robustness under drop, shock, and vibration-suitable for portable, industrial, and transportation equipment. |
Applications
| Point-of-Load Regulation | Industrial Sensor Node |
|---|---|
Use Scenario: Powering ARM Cortex-M7 MCU core at 1.8V from a shared 3.3V system rail in a programmable logic controller. IC Role / Device Role / Timing Role: Primary step-down regulator delivering tightly regulated 1.8V @ 800mA with fast transient response (<40µs recovery) and ±1% accuracy across temperature. Use Value: Enables deterministic MCU timing and ADC reference stability without external LDO post-regulation or complex compensation. | Use Scenario: Supplying 3.3V to MEMS pressure sensor, low-noise op-amp, and BLE radio in a battery-powered environmental monitor. IC Role / Device Role / Timing Role: Single-chip power solution providing 3.3V @ 350mA with PFM mode for <15µA quiescent draw during sleep cycles. Use Value: Extends coin-cell battery life beyond 5 years while maintaining 93% efficiency at 100µA load via automatic PFM entry. |
| Battery-Powered Wearable | Distributed Power System |
Use Scenario: Regulating 2.5V for OLED display driver from a 3.7V Li-ion cell in a smartwatch, with dynamic brightness scaling. IC Role / Device Role / Timing Role: High-frequency (4MHz) buck converter enabling use of 10µF total output capacitance, minimizing board area and weight. Use Value: Achieves <0.5mm profile height and <12mm² footprint-critical for ultra-thin wearable form factors. | Use Scenario: Providing isolated 1.5V rails to multiple FPGA I/O banks across a 12-layer telecom backplane with tight thermal constraints. IC Role / Device Role / Timing Role: Compact, thermally rugged module mounted directly on FPGA carrier card, dissipating ≤1.2W at full load with θJA = 77°C/W. Use Value: Eliminates need for heatsinks or airflow, simplifying mechanical design while meeting IPC-2221 Class 2 current-carrying capacity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAXM17623AMB+ | 2MHz switching frequency; 0.8V–1.5V output range; 1.5µH integrated inductor | Optimized for sub-1.5V digital cores (e.g., LPDDR I/O, low-voltage ASICs); lower switching loss at medium loads | Select MAXM17623AMB+ when output ≤1.5V and EMI sensitivity favors 2MHz over 4MHz operation. |
| TPS826718SIPR | 2.5V–6V input; 0.9V–3.3V output; 1.2A max; 3.5MHz switching; different pinout and package (2.05mm × 2.85mm) | Higher current rating but larger footprint; lacks prebias startup and JESD22 qualification | Choose TPS826718SIPR only if >1A load or wider input range is mandatory-and layout revision is acceptable. |
Compared with MAXM17623AMB+, the MAXM17624AMB+ delivers higher output voltage range and 4MHz operation for smaller passives, while TPS826718SIPR offers greater current headroom at the cost of size, qualification, and startup flexibility.
Availability
MAXM17624AMB+ is available at Aetrix Electronics and suitable for point-of-load power supplies, battery-powered wearables, and industrial sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAXM17624AMB+ 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 Himalaya uSLIC™ power module product line targets space-constrained, high-reliability systems needing plug-and-play DC-DC conversion-reducing design time, layout risk, and qualification effort for embedded power rails.
FAQ
What is the maximum output voltage supported by the MAXM17624AMB+?
The MAXM17624AMB+ supports an output voltage range of 1.5V to 3.3V, set externally using a resistor divider on the FB pin. This range is fixed per the device's internal architecture-unlike the MAXM17623AMB+, which supports 0.8V–1.5V. The 0.8V internal feedback reference and ±1% accuracy ensure precise regulation across the full 1.5V–3.3V span.
Does the MAXM17624AMB+ support startup into a prebiased output?
Yes, the MAXM17624AMB+ supports safe startup into a prebiased output in both PFM and forced-PWM modes. This prevents reverse current flow and avoids discharging the output capacitor-a key requirement for multi-rail digital systems like FPGAs or application processors where power sequencing must avoid bus contention or latch-up.
How does the MODE pin affect efficiency at light loads for the MAXM17624AMB+?
When the MODE pin is left unconnected, the MAXM17624AMB+ operates in PFM mode at light loads (<10mA), skipping pulses to maintain >90% efficiency. When MODE is grounded, it forces constant 4MHz PWM operation-reducing light-load efficiency by ~15–20% but ensuring fixed frequency for EMI-sensitive applications such as RF transceivers or precision ADCs.
What thermal protection features are built into the MAXM17624AMB+?
The MAXM17624AMB+ includes thermal shutdown that activates at +165°C junction temperature, turning off both MOSFETs until the die cools by 10°C hysteresis. Combined with its 77°C/W θJA on a four-layer board and uSLIC™ package's low thermal resistance, this ensures reliable operation in sealed enclosures or high-ambient environments up to +125°C ambient.
Can the MAXM17624AMB+ operate with 100% duty cycle, and what is its practical benefit?
Yes, the MAXM17624AMB+ supports 100% duty-cycle operation, allowing VOUT to track VIN down to minimal dropout (e.g., 3.31V out at 3.32V in). This is essential for battery-powered systems nearing end-of-discharge, where input voltage may fall within 50mV of the regulated output-eliminating the need for backup LDOs or complex power-path management.
MAXM17624AMB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 10-SMD Module
- Packaging:
- Strip
- Product Status:
- Active
- Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- 2.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output 1:
- -
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- -
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- -
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-eMGA (2.6x2.1)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MAXM17624AMB+ FAQ
1.How can I place an order for MAXM17624AMB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM17624AMB+ 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 MAXM17624AMB+ reliable?
The price and inventory of MAXM17624AMB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM17624AMB+ is usually 5 days.
3.What payment methods are accepted for MAXM17624AMB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM17624AMB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM17624AMB+?
MAXM17624AMB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM17624AMB+ 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 MAXM17624AMB+?
For technical support, including MAXM17624AMB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM17624AMB+ requirements.
6.How does Aetrix verify that MAXM17624AMB+ is sourced from the original manufacturer or authorized distributors?
All MAXM17624AMB+ 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 MAXM17624AMB+ meets industry standards.
7.What is the process for return or replacement of MAXM17624AMB+?
All MAXM17624AMB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAXM17624AMB+, 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 MAXM17624AMB+ part is unused and in its original packaging.
Return procedure for MAXM17624AMB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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