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Analog Devices Inc./Maxim Integrated MAXM17623AMB+T
- Part No.:
- MAXM17623AMB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 10-SMD Module
- Datasheet:
-
MAXM17623AMB+T.pdf
- Description:
- IC REG BUCK ADJ 1A 10EMGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,269
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Product details
Overview
MAXM17623AMB+T from Maxim Integrated is a Himalaya-series synchronous step-down DC-DC power module integrating MOSFETs, compensation circuitry, and a 1.5µH inductor in a compact uSLIC™ package. It operates from 2.9V to 5.5V input, delivers up to 1A output current, supports adjustable 0.8V–1.5V output voltage with ±1% feedback accuracy, and runs at a fixed 2MHz switching frequency-ideal for space-constrained point-of-load regulation in battery-powered industrial sensors.
For engineers reviewing the MAXM17623AMB+T datasheet, MAXM17623AMB+T pinout, MAXM17623AMB+T application, or MAXM17623AMB+T equivalent, key selection criteria include its integrated inductor, 1ms soft-start, PGOOD open-drain output, MODE-selectable PWM/PFM operation, and -40°C to +125°C ambient operating range.
Technical Context
The MAXM17623AMB+T employs peak-current-mode control with internal slope compensation and a fixed 2MHz oscillator. Its controller features cycle-by-cycle overcurrent protection (1.7A typical peak limit), thermal shutdown at 165°C with 10°C hysteresis, and prebias startup capability without output capacitor discharge.
It uses an internally compensated architecture requiring only external FB resistors and ceramic input/output capacitors. The device supports 100% duty-cycle operation, enables seamless transition between PWM (fixed-frequency) and PFM (pulse-skipping) modes via the MODE pin, and provides precise output regulation via a 0.8V reference at the FB pin with ±1% accuracy over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.9V to 5.5V - compatible with single-cell Li-ion, USB 5V, and standard 3.3V/5V rails |
| Output Voltage Range | 0.8V to 1.5V - factory-configured for low-voltage digital ICs (e.g., microcontrollers, FPGAs) |
| Max Output Current | 1A continuous - sufficient for core logic rails in portable and industrial edge devices |
| Switching Frequency | 2.00 MHz (±4%) - enables use of small external capacitors and reduces EMI filtering burden |
| Feedback Accuracy | ±1% - ensures tight output regulation across load, line, and temperature for sensitive analog/digital loads |
| Soft-Start Time | 1 ms typical - prevents inrush current and output overshoot during power-up |
| Shutdown Current | 0.1 µA typical - preserves battery life in always-on or low-power wake-up systems |
Pinout & Package
MAXM17623AMB+T is housed in a 10-pin, 2.6mm × 2.1mm × 1.3mm uSLIC™ package (package code MA102A2+1), featuring separate signal (SGND) and power (PGND) ground pins for noise isolation and optimized thermal performance on four-layer PCBs (θJA = 77°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching node | Internal connection to high-side/low-side MOSFET drains; no external component required |
| OUTSNS | Output voltage sense | Kelvin connection point to COUT positive terminal for accurate remote sensing and load regulation |
| FB | Feedback input | Connects to resistor divider midpoint; sets output voltage with 0.8V internal reference |
| PGOOD | Power-good indicator | Open-drain output asserting high when VOUT ≥ 93.5% of target; deasserts after 184µs post-soft-start |
| MODE | Operating mode select | Ground for forced-PWM; floating for automatic PFM at light loads |
| OUT | Regulated output | Main power delivery path to load; connects directly to COUT and PGND |
| EN | Enable control | Active-high logic input; >2V enables, <0.8V disables with sub-µA quiescent draw |
| SGND | Signal ground | Reference for FB, MODE, PGOOD, and EN; must tie to PGND at VIN decoupling capacitor |
| PGND | Power ground | High-current return path for LX and OUT; requires low-impedance plane connection |
| IN | Input supply | Primary power input; requires local 2.2µF ceramic decoupling to PGND |
Key Features
| Feature | Design Value |
|---|---|
| Integrated inductor | 1.5µH ±20% embedded in-package - eliminates external inductor layout, BOM count, and EMI tuning |
| Internally compensated | No external compensation components needed - reduces design iterations and validation time |
| Prebias startup | Supports soft-start into precharged output without discharging COUT - essential for multi-rail SoC/FPGA sequencing |
| All-ceramic capacitor support | Compatible with low-ESR X5R/X7R MLCCs only - simplifies sourcing and improves reliability vs. electrolytics |
| Robust protection suite | Includes overcurrent (1.7A peak limit), thermal shutdown (165°C), and continuous short-circuit tolerance - enables unattended operation in harsh environments |
Applications
| Point-of-Load Regulation | Industrial Sensor Power |
|---|---|
Use Scenario: Providing clean, regulated 1.2V supply to a low-power ARM Cortex-M4 microcontroller in a wireless vibration sensor node. IC Role / Device Role / Timing Role: Primary DC-DC converter delivering stable core voltage with fast transient response to CPU burst loads. Use Value: Enables 1A peak current delivery within 2.6mm × 2.1mm footprint while maintaining ±1% output accuracy across -40°C to +125°C ambient. | Use Scenario: Powering a 4–20mA loop-powered pressure transducer with integrated ADC and RS-485 interface. IC Role / Device Role / Timing Role: Isolated secondary-side regulator generating 3.3V from a 5V isolated rail, supporting analog front-end and digital communication. Use Value: Delivers 1A output with 2MHz switching to minimize filter size, while PGOOD confirms rail readiness before sensor initialization. |
| Battery-Powered IoT Devices | Distributed Power Systems |
Use Scenario: Supplying 0.8V to an ultra-low-power BLE SoC in a coin-cell–operated asset tracker. IC Role / Device Role / Timing Role: Efficient step-down converter operating in PFM mode at µA-level loads, transitioning to PWM under active radio transmission. Use Value: Achieves >85% efficiency at 100µA load (PFM) and maintains >90% at 500mA (PWM), extending battery life by minimizing quiescent loss. | Use Scenario: Local regulation for FPGA I/O banks in a modular PLC backplane where each slot requires independent 1.5V/1A rails. IC Role / Device Role / Timing Role: Compact, plug-and-play power module enabling board-level redundancy and hot-swap compatibility. Use Value: Reduces PCB area by 60% vs. discrete buck solutions and eliminates inductor selection/validation effort per slot. |
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 |
|---|---|---|---|
| MAXM17624AMB+T | Fixed 4MHz switching frequency; 1µH inductor; supports 1.5V–3.3V output range | Targeted at higher-output-voltage rails (e.g., 2.5V/3.3V I/O supplies); less suitable for sub-1.2V core rails | Select MAXM17624AMB+T only when output voltage >1.5V and higher switching frequency is required for EMI suppression. |
| TPS826718SIPR | TI µSIP module; 2.5V–5.5V input; 0.8V–1.8V output; 1A; 2.4MHz; different pinout and enable threshold | Requires redesign of FB divider and layout due to non-pin-compatible footprint and SGND/PGND arrangement | Consider TPS826718SIPR only if dual sourcing is mandated and layout revision is acceptable. |
Compared with MAXM17624AMB+T and TPS826718SIPR, the MAXM17623AMB+T uniquely combines 0.8V–1.5V output flexibility, 2MHz operation, and Himalaya's ruggedized uSLIC™ construction-making it optimal for compact, thermally constrained core-rail designs where pin compatibility and minimal external components are critical.
Availability
MAXM17623AMB+T is available at Aetrix Electronics and suitable for point-of-load power supplies, battery-powered IoT nodes, and industrial sensor modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAXM17623AMB+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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The Himalaya series-including MAXM17623AMB+T-is engineered specifically for space-constrained, high-reliability power conversion, integrating inductors and control circuitry to eliminate design risk and accelerate time-to-market for embedded power systems.
FAQ
What is the maximum output current supported by the MAXM17623AMB+T?
The MAXM17623AMB+T supports up to 1A of continuous output current under specified thermal conditions (TA ≤ +125°C, four-layer board). Derating applies above +85°C ambient; full 1A is guaranteed at VIN = 3.3V and VOUT = 1.2V with proper PCB copper area. The device includes cycle-by-cycle overcurrent protection limiting peak inductor current to 1.7A typical.
Does the MAXM17623AMB+T require external compensation components?
No, the MAXM17623AMB+T is fully internally compensated. No external compensation network (e.g., type-II or type-III compensator) is needed-only the FB resistor divider and input/output ceramic capacitors are required. This eliminates stability tuning and reduces bill-of-materials count and layout complexity.
Can the MAXM17623AMB+T start up into a prebiased output?
Yes, the MAXM17623AMB+T supports startup into a prebiased output in both PWM and PFM modes without discharging the output capacitor. This feature is critical for multi-rail systems (e.g., FPGAs or processors with sequenced supplies) where downstream rails may already be energized when the MAXM17623AMB+T is enabled.
What is the function of the MODE pin on the MAXM17623AMB+T?
The MODE pin selects the light-load operating mode: grounding MODE forces constant-frequency PWM operation at all loads; leaving MODE floating enables automatic PFM mode under light loads (<350mA for 64 cycles), improving efficiency. The state is latched at power-up and cannot be changed dynamically during operation.
How does the PGOOD pin behave during startup and fault conditions?
The PGOOD pin is an open-drain output that asserts high (when pulled up externally) 184µs after soft-start completion, provided VOUT reaches ≥93.5% of the target. It deasserts low if VOUT falls below 90% of target-such as during overload, short circuit, or input UVLO-and remains low until regulation is restored and soft-start completes again.
MAXM17623AMB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 10-SMD Module
- Packaging:
- Tape & Reel (TR)
- 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:
- -
MAXM17623AMB+T FAQ
1.How can I place an order for MAXM17623AMB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM17623AMB+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 MAXM17623AMB+T reliable?
The price and inventory of MAXM17623AMB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM17623AMB+T is usually 5 days.
3.What payment methods are accepted for MAXM17623AMB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM17623AMB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM17623AMB+T?
MAXM17623AMB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM17623AMB+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 MAXM17623AMB+T?
For technical support, including MAXM17623AMB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM17623AMB+T requirements.
6.How does Aetrix verify that MAXM17623AMB+T is sourced from the original manufacturer or authorized distributors?
All MAXM17623AMB+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 MAXM17623AMB+T meets industry standards.
7.What is the process for return or replacement of MAXM17623AMB+T?
All MAXM17623AMB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAXM17623AMB+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 MAXM17623AMB+T part is unused and in its original packaging.
Return procedure for MAXM17623AMB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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