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Analog Devices Inc./Maxim Integrated MAXM17626AMB+
- Part No.:
- MAXM17626AMB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 10-SMD Module
- Datasheet:
-
MAXM17626AMB+.pdf
- Description:
- 2.7V TO 5.5V
- Quantity:
- Payment:
- Shipping:
Inventory:2,586
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Product details
Overview
MAXM17626AMB+ from Maxim Integrated is a 4MHz synchronous step-down DC-DC power module with integrated inductor, MOSFETs, and compensation, delivering up to 600mA at adjustable 1.5V–3.3V output from a 2.7V–5.5V input. It features ±1% feedback accuracy, open-drain PGOOD, and 1ms soft-start-designed for compact point-of-load regulation in battery-powered industrial sensors.
For engineers reviewing the MAXM17626AMB+ datasheet, MAXM17626AMB+ pinout, MAXM17626AMB+ application, or MAXM17626AMB+ equivalent, key selection criteria include fixed 4MHz switching frequency, 1.5–3.3V output range, 10-pin uSLIC package footprint, and PFM/PWM mode selection via MODE pin-critical for EMI-sensitive and efficiency-optimized designs.
Technical Context
The MAXM17626AMB+ employs peak-current-mode control with internal slope compensation and a fixed 4MHz oscillator, enabling stable regulation with all-ceramic capacitors and no external compensation. Its architecture supports 100% duty-cycle operation and prebias startup, ensuring reliable power-up into existing output voltages.
It integrates a 1μH ±20% inductor, high-side pMOSFET and low-side nMOSFET, and thermal shutdown (165°C rising, 10°C hysteresis). The device latches MODE pin state at power-up to select constant-frequency PWM or pulse-frequency modulation-PFM disables negative inductor current and skips pulses for light-load efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V 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 - set via external resistor divider on FB pin; covers core logic, I/O, and analog supply requirements. |
| Max Output Current | 600mA - sufficient for microcontrollers, ADCs, and low-power FPGAs in space-constrained applications. |
| Switching Frequency | Fixed 4MHz - enables use of smaller external capacitors and reduces audible noise; avoids AM radio band interference. |
| Feedback Accuracy | ±1% - ensures tight output regulation across temperature and load, critical for precision analog and RF subsystems. |
| Shutdown Current | 0.1μA (typ) - minimizes battery drain in always-on sensor nodes during deep sleep modes. |
| Operating Temperature | −40°C to +125°C ambient - qualified for industrial and automotive under-hood environments. |
Pinout & Package
MAXM17626AMB+ uses a 10-pin, 2.6mm × 2.1mm × 1.35mm uSLIC package with exposed PGND pad for thermal performance. Pin layout is optimized for minimal loop area and high-current routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching node | Internal connection to inductor and MOSFETs; no external component-must remain unconnected and isolated. |
| OUTSNS | Output voltage sense | Kelvin connection point to COUT's positive terminal; enables accurate regulation by rejecting PCB trace IR drop. |
| FB | Feedback input | Connects to center of R1/R2 divider; sets output voltage per VOUT = 0.8V × (1 + R1/R2); bias current <50nA. |
| PGOOD | Open-drain status output | Asserts high when VOUT >93.5% of target; deasserts low at <90%; requires external pullup to IN or system rail. |
| MODE | Operation mode select | Ground for forced-PWM (fixed 4MHz); floating for PFM (pulse-skipping, higher light-load efficiency). |
| OUT | Power output | Main regulated output; connect COUT directly between OUT and PGND with low-ESR ceramic capacitor. |
| EN | Enable control | Active-high logic input; threshold 2V min; enables soft-start ramp and disables all switching when low. |
| SGND | Signal ground reference | Reference for FB, MODE, PGOOD, and EN; tie to PGND at single point near IN bypass capacitor. |
| PGND | Power ground return | High-current return path for inductor and MOSFETs; must connect to large copper plane with multiple vias. |
| IN | Input power supply | 2.7–5.5V input; decouple with ≥2.2μF X7R ceramic placed adjacent to IN and PGND pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated uSLIC module | Combines 1μH inductor, MOSFETs, controller, and compensation in one 2.6mm × 2.1mm footprint-eliminates 12+ discrete components and layout sensitivity. |
| 100% duty-cycle capability | Enables dropout operation down to VIN ≈ VOUT + 0.13×IOUT, supporting ultra-low-input scenarios like aging batteries. |
| Prebias startup | Soft-starts into an already-biased output without discharging COUT-essential for multi-rail SoC power sequencing. |
| Robust protection suite | Includes cycle-by-cycle overcurrent limit (1.45A peak), thermal shutdown (165°C), and undervoltage lockout (2.6V typ). |
| All-ceramic capacitor support | Eliminates electrolytics; enables small, long-life, low-ESR designs using only X7R/X5R MLCCs on input and output. |
Applications
| Industrial Sensor Nodes | Battery-Powered IoT Devices |
|---|---|
Use Scenario: Compact wireless temperature/humidity sensor operating from coin cell or LiPo battery with 10-year lifetime requirement. IC Role / Device Role / Timing Role: Primary 3.3V supply for MCU, BLE radio, and analog front-end; regulates against battery voltage sag. Use Value: 4MHz switching allows tiny 10μF output cap; PFM mode extends battery life by >3× vs. PWM at μA-level sleep currents. | Use Scenario: Portable handheld meter with LCD, touch interface, and data logging-requires clean, stable 1.8V rail for precision ADC. IC Role / Device Role / Timing Role: Point-of-load regulator delivering 600mA at 1.8V from 3.6V battery; provides fast transient response to burst sampling. Use Value: ±1% feedback accuracy and Kelvin sensing maintain ADC reference stability; 1ms soft-start prevents brownout during power-up. |
| Distributed Power Systems | Embedded Control Modules |
Use Scenario: DIN-rail mounted PLC I/O module with isolated 5V input and multiple local 3.3V/2.5V rails. IC Role / Device Role / Timing Role: Secondary non-isolated buck stage converting 5V to 3.3V for digital logic and communication interfaces (RS-485, CAN). Use Value: uSLIC package simplifies thermal management in dense layouts; PGOOD signals enable system-level power sequencing and fault detection. | Use Scenario: Fanless edge gateway with ARM Cortex-A processor, DDR3 memory, and Ethernet PHY-all requiring tightly regulated supplies. IC Role / Device Role / Timing Role: Core 1.5V supply for processor I/O domain; delivers 600mA with minimal board area and no external compensation. Use Value: Fixed 4MHz operation avoids EMI coupling into sensitive Ethernet signals; -40°C to +125°C rating ensures reliability in uncontrolled enclosures. |
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 |
|---|---|---|---|
| MAXM17625AMB+ | 2MHz switching frequency; 0.8–1.5V output range; 1.5μH integrated inductor. | Targeted at lower-voltage cores (e.g., 1.2V FPGA banks); less suitable for 3.3V I/O rails. | Select MAXM17625AMB+ when output ≤1.5V and lower EMI priority outweighs size/efficiency trade-offs. |
| TPS826718SIPR | 2.5–5.5V input; 1.8V fixed output; 1.2A max; 2.8MHz switching; 2.0mm × 2.4mm package. | Fixed-output variant with higher current; lacks MODE-selectable PFM/PWM and adjustable FB range. | Choose TPS826718SIPR for cost-sensitive, fixed-1.8V applications where design flexibility is secondary to BOM simplicity. |
Compared with MAXM17625AMB+, the MAXM17626AMB+ offers higher switching frequency and extended output range-enabling smaller capacitors and broader system compatibility; versus TPS826718SIPR, it provides programmable voltage and dual-mode efficiency optimization at the cost of fixed-output simplicity.
Availability
MAXM17626AMB+ is available at Aetrix Electronics and suitable for industrial sensor nodes, battery-powered IoT devices, and embedded control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAXM17626AMB+ 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 high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The Himalaya uSLIC product line-of which MAXM17626AMB+ is a member-was engineered to replace traditional buck converter designs with fully integrated, surface-mount power modules that reduce layout risk, accelerate time-to-market, and improve thermal reliability.
FAQ
What output voltage range does the MAXM17626AMB+ support?
The MAXM17626AMB+ supports an adjustable output voltage range of 1.5V to 3.3V, set externally via a resistor divider connected to the FB pin. This range is distinct from the MAXM17625AMB+, which covers 0.8V to 1.5V. The MAXM17626AMB+ achieves this using internal reference and feedback architecture validated across −40°C to +125°C ambient temperature.
How does the MODE pin affect MAXM17626AMB+ operation?
The MODE pin on the MAXM17626AMB+ selects between two operating modes at power-up: grounding MODE enables forced-PWM mode (fixed 4MHz), while leaving MODE floating enables PFM mode (pulse-skipping for higher light-load efficiency). The state is latched and cannot be changed dynamically during operation. This behavior is confirmed in the MAXM17626AMB+ datasheet Section "Mode Selection (MODE)".
Can MAXM17626AMB+ start up into a prebiased output?
Yes, the MAXM17626AMB+ supports startup into a prebiased output without discharging the output capacitor in both PFM and forced-PWM modes. This feature is explicitly documented in the "Startup into a Prebiased Output" section of the MAXM17626AMB+ datasheet and is essential for systems with multi-rail power sequencing, such as processors with independent core and I/O supplies.
What is the maximum junction temperature and thermal protection behavior of MAXM17626AMB+?
The MAXM17626AMB+ includes thermal overload protection that shuts down the device when junction temperature exceeds +165°C (rising threshold), with 10°C hysteresis. After shutdown, the device remains off until the junction cools to +155°C, at which point normal operation resumes. This behavior is specified in the "Thermal Shutdown" table and "Detailed Description" section of the MAXM17626AMB+ datasheet.
Is the MAXM17626AMB+ pin-compatible with other uSLIC modules like MAXM17625AMB+?
Yes, the MAXM17626AMB+ shares identical 10-pin uSLIC package dimensions (2.6mm × 2.1mm × 1.35mm), pinout, and land pattern with MAXM17625AMB+, enabling direct PCB footprint reuse. However, due to differing output voltage ranges and switching frequencies, firmware and external resistor values must be verified for each variant. This mechanical compatibility is confirmed in the "Package Information" and "Ordering Information" sections of the MAXM17626AMB+ datasheet.
MAXM17626AMB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-SMD Module
- Packaging:
- Strip
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output 1:
- 0.8 ~ 3.3V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 600mA
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-eMGA (2.6x2.1)
- Control Features:
- Enable, Active Low
- Approval Agency:
- -
- Standard Number:
- -
MAXM17626AMB+ FAQ
1.How can I place an order for MAXM17626AMB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM17626AMB+ 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 MAXM17626AMB+ reliable?
The price and inventory of MAXM17626AMB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM17626AMB+ is usually 5 days.
3.What payment methods are accepted for MAXM17626AMB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM17626AMB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM17626AMB+?
MAXM17626AMB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM17626AMB+ 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 MAXM17626AMB+?
For technical support, including MAXM17626AMB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM17626AMB+ requirements.
6.How does Aetrix verify that MAXM17626AMB+ is sourced from the original manufacturer or authorized distributors?
All MAXM17626AMB+ 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 MAXM17626AMB+ meets industry standards.
7.What is the process for return or replacement of MAXM17626AMB+?
All MAXM17626AMB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAXM17626AMB+, 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 MAXM17626AMB+ part is unused and in its original packaging.
Return procedure for MAXM17626AMB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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