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Analog Devices Inc./Maxim Integrated MAXM17631AME+T
- Part No.:
- MAXM17631AME+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 16-SMD Module
- Datasheet:
-
MAXM17631AME+T.pdf
- Description:
- DC DC CONVERTER 5V
- Quantity:
- Payment:
- Shipping:
Inventory:5,845
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Product details
Overview
MAXM17631AME+T from Maxim Integrated is a fixed 5V, 1A synchronous step-down DC-DC power module with integrated controller, MOSFETs, compensation, and inductor. It operates from 4.5V to 36V input, delivers ±1.2% output voltage accuracy over –40°C to +125°C, supports PWM/PFM/DCM modes, and uses a compact 3mm × 3mm × 1.75mm uSLIC™ package. It enables plug-and-play point-of-load regulation in industrial control and base station power supplies.
For engineers reviewing the MAXM17631AME+T datasheet, MAXM17631AME+T pinout, MAXM17631AME+T application, or MAXM17631AME+T equivalent, key selection criteria include its fixed 5V output, 1A continuous current capability, 1250kHz typical switching frequency, built-in RESET monitoring, and EN/UVLO programmability - all critical for reliable, space-constrained embedded power designs.
Technical Context
The MAXM17631AME+T implements peak-current-mode control with selectable PWM, PFM, or DCM operation to maintain high efficiency across load ranges. Its internal compensation eliminates external loop components, and the auxiliary EXTVCC input improves light-load efficiency by powering the gate driver independently.
It features monotonic startup with prebiased output support, programmable EN/UVLO thresholds (1.19V–1.26V rising), and integrated hiccup-mode overload protection plus thermal shutdown at 165°C with 10°C hysteresis - ensuring robust operation in demanding industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V - supports wide-input industrial and telecom rails without external pre-regulation. |
| Output Voltage | Fixed 5.0V ±1.2% - guaranteed regulation across –40°C to +125°C ambient, enabling stable MCU/peripheral supply. |
| Max Output Current | 1A continuous - sufficient for FPGA I/O banks, microcontrollers, and sensor interfaces in compact systems. |
| Switching Frequency | 1250kHz (typical) - enables small external capacitors and reduces output ripple without sacrificing EMI performance. |
| Efficiency Mode | PWM/PFM/DCM selectable - maintains >85% efficiency at 10mA load (PFM) and >90% at full load (PWM), optimizing battery life and thermal design. |
| Shutdown Current | 2.8μA (typ) - minimizes system standby power, critical for always-on industrial edge nodes. |
| Package | 16-pin uSLIC™ (3mm × 3mm × 1.75mm) - surface-mount module with integrated inductor, eliminating layout-sensitive magnetics and reducing PCB area by >50% vs discrete solutions. |
Pinout & Package
The MAXM17631AME+T is housed in a 16-pin, 3mm × 3mm × 1.75mm uSLIC™ package with exposed pad (EP) for thermal dissipation. Pin numbering follows standard IC orientation with Pin 1 marked by dot or bevel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Primary DC input (4.5V–36V); connects to bulk capacitor and must be locally decoupled. |
| PGND | Power Ground | High-current return path for power stage; requires low-inductance connection to VIN capacitor ground. |
| LX | Switch Node | Internal switch node connecting high-side and low-side MOSFETs; sensitive to layout parasitics. |
| VOUT | Regulated Output | 5V output terminal; connects directly to load and output capacitor bank. |
| EN/UVLO | Enable / Input UVLO Input | Logic-level enable with adjustable threshold (1.19V–1.26V rising); also provides input undervoltage lockout. |
| RESET | Power-Good Output | Open-drain signal asserting low when VOUT drops below 92% of nominal; used for system sequencing and fault detection. |
| FB | Feedback Input | Monitors regulated output; internally tied to 5V reference - no external resistor divider required for fixed-output version. |
| MODE/SYNC | Mode Selection / Clock Sync | Selects PWM/DCM/PFM mode or accepts external clock (1.1×–1.4× fSW) for EMI reduction. |
| RT | Frequency Set | Connects to resistor to set switching frequency (400kHz–2.2MHz); open = 400kHz default. |
| SS | Soft-Start Control | Controls startup ramp rate via external capacitor; ensures monotonic VOUT rise even with prebiased loads. |
| BST | Bootstrap Supply | Provides gate-drive voltage for high-side MOSFET; requires 0.1μF ceramic capacitor to LX. |
| EXTVCC | Auxiliary LDO Input | Optional 4.56V–4.84V supply to power gate driver independently, improving light-load efficiency. |
| VCC | Internal LDO Output | 5V internal supply (4.75V–5.25V) for control circuitry; can power external bias rails if needed. |
| SGND | Signal Ground | Analog ground reference for FB, SS, MODE/SYNC, RESET; must be star-connected to PGND at single point. |
| EP | Exposed Thermal Pad | Internally connected to PGND; must be soldered to large copper pour for thermal management (θJA = 28°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor + Power Stage | Eliminates external magnetics and compensation network - reduces BOM count by ≥12 components and design validation time. |
| ±1.2% Output Accuracy | Guaranteed over full temperature range - removes need for post-production trimming and simplifies system-level tolerance analysis. |
| Programmable EN/UVLO Threshold | Adjustable via external resistor divider - enables custom brown-out behavior and seamless integration into multi-rail power sequencing. |
| Built-in RESET Monitoring | Dedicated open-drain output with 90.5%–94.6% VOUT trip window - provides hardware-level power-good signaling without external supervisor IC. |
| All-Ceramic Capacitor Support | Compatible with X7R/X5R MLCCs only - avoids electrolytic aging and enables ultra-thin, high-reliability industrial modules. |
| CISPR22 Class B Compliance | Meets conducted/radiated emissions limits without added shielding or ferrites - accelerates EMC certification for end equipment. |
Applications
| Industrial PLC I/O Power | Base Station RF Front-End Bias |
|---|---|
Use Scenario: Providing isolated 5V rail for digital I/O modules in programmable logic controllers operating in harsh factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering clean, sequenced 5V to FPGA configuration banks and isolated RS-485 transceivers. Use Value: Built-in RESET and thermal shutdown ensure fail-safe shutdown during overtemperature events, while 1A capacity supports multiple I/O channels per module. | Use Scenario: Generating stable 5V bias for GaN power amplifiers and analog front-end ICs in 4G/5G macro base stations where board space and thermal density are constrained. IC Role / Device Role / Timing Role: Compact, high-efficiency DC-DC converter supplying low-noise 5V to RF ICs with minimal layout footprint and no external inductor placement concerns. Use Value: 1250kHz switching frequency and all-ceramic support minimize output ripple (<10mVpp), preserving RF signal integrity and adjacent-channel interference margins. |
| High-Voltage Single-Board Computer | Distributed Point-of-Load in Test Equipment |
Use Scenario: Powering ARM-based SBCs in industrial automation systems that accept 24V or 36V DC input and require tightly regulated 5V for SoC core and peripherals. IC Role / Device Role / Timing Role: Main system regulator converting unregulated field bus voltage to precise 5V, with soft-start preventing inrush current on hot-swap backplanes. Use Value: Monotonic startup with prebias support allows safe hot-insertion into live backplanes, while EXTVCC option improves efficiency under partial load conditions. | Use Scenario: Delivering independent 5V rails to multiple instrument subsystems (ADC drivers, DAC buffers, sensor excitation) within automated test equipment chassis. IC Role / Device Role / Timing Role: Modular, drop-in power solution enabling scalable, identical power stages across different measurement channels without custom magnetics design. Use Value: Identical 3mm × 3mm footprint and pinout across MAXM17630/MAXM17631/MAXM17632 family simplifies BOM consolidation and layout reuse across product variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAXM17630AME+T | Fixed 3.3V output (vs. 5V); identical package, pinout, and feature set. | Suitable for 3.3V FPGA I/O, microcontroller cores, or USB PHY supplies - not interchangeable without schematic revision. | Select when system requires 3.3V instead of 5V; same layout and thermal design apply. |
| TPSM84205RKGT | TI 5V/1A module with 2.2MHz max fSW, no EXTVCC, and different pinout (10-pin QFN). | Lacks programmable EN/UVLO and RESET output; requires external soft-start capacitor and separate power-good circuitry. | Choose for higher-frequency operation where smaller output caps are prioritized, but expect added design complexity and component count. |
Compared with MAXM17630AME+T, the MAXM17631AME+T provides identical reliability and integration but targets 5V systems; versus TPSM84205RKGT, it offers superior feature integration (RESET, EXTVCC, mode select) and tighter output accuracy, justifying use in mission-critical industrial applications despite slightly larger footprint.
Availability
MAXM17631AME+T is available at Aetrix Electronics and suitable for industrial control power supplies, base station RF biasing, and high-voltage single-board computers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAXM17631AME+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 industrial, automotive, and communications markets.
The Himalaya uSLIC™ power module product line targets space-constrained, thermally demanding applications requiring fully integrated, easy-to-use DC-DC conversion with minimal external components.
FAQ
What is the output voltage tolerance of the MAXM17631AME+T over temperature?
The MAXM17631AME+T guarantees ±1.2% feedback voltage regulation accuracy over the full operating ambient temperature range of –40°C to +125°C. This specification applies to the internal 5V reference and is measured at the FB pin, ensuring stable output voltage without external calibration or trimming across industrial temperature extremes.
Does the MAXM17631AME+T require external compensation components?
No, the MAXM17631AME+T is internally compensated across its entire output voltage range. The device integrates all necessary compensation components, eliminating the need for external resistors or capacitors in the feedback loop - a key enabler of its plug-and-play design and reduced layout sensitivity.
Can the MAXM17631AME+T operate with a prebiased output during startup?
Yes, the MAXM17631AME+T supports monotonic startup into a prebiased output. Its soft-start circuitry actively controls the output ramp regardless of initial VOUT voltage, preventing reverse current flow and ensuring safe hot-swap operation in backplane or modular power architectures.
What is the function of the EXTVCC pin on the MAXM17631AME+T?
The EXTVCC pin on the MAXM17631AME+T accepts an external 4.56V–4.84V supply to power the internal gate driver independently of VIN. This reduces switching losses and improves light-load efficiency - particularly valuable in battery-powered or energy-conscious industrial edge devices using PFM mode.
Is the MAXM17631AME+T pin-compatible with other members of the Himalaya uSLIC™ family?
Yes, the MAXM17631AME+T shares identical pinout, package dimensions, and thermal pad layout with MAXM17630AME+T (3.3V) and MAXM17632AME+T (adjustable). This enables direct substitution between fixed-output variants with only minor schematic changes (e.g., FB connection), streamlining design reuse and inventory management.
MAXM17631AME+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 16-SMD Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 5V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 1A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-eMGA (3x3)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MAXM17631AME+T FAQ
1.How can I place an order for MAXM17631AME+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM17631AME+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 MAXM17631AME+T reliable?
The price and inventory of MAXM17631AME+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM17631AME+T is usually 5 days.
3.What payment methods are accepted for MAXM17631AME+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM17631AME+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM17631AME+T?
MAXM17631AME+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM17631AME+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 MAXM17631AME+T?
For technical support, including MAXM17631AME+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM17631AME+T requirements.
6.How does Aetrix verify that MAXM17631AME+T is sourced from the original manufacturer or authorized distributors?
All MAXM17631AME+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 MAXM17631AME+T meets industry standards.
7.What is the process for return or replacement of MAXM17631AME+T?
All MAXM17631AME+T units undergo pre-shipment inspection (PSI). If there is an issue with MAXM17631AME+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 MAXM17631AME+T part is unused and in its original packaging.
Return procedure for MAXM17631AME+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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