MAXM17630AME+T - 1A, 36V Himalaya uSLIC Step-Down Module | ADI
料号： MAXM17630AME+T ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $3.02 | $1,510.00 |
| 1,000 | $2.7 | $2,700.00 |
MAXM17630AME+T 概述
A step-down DC-DC module (or buck converter module) is a complete switching power supply building block that integrates the controller, power switches, inductor and feedback compensation inside a single surface-mount package. Compared with discrete buck designs, a uSLIC module reduces external component count to essentially one input capacitor, one output capacitor and two small resistors, while delivering factory-tuned loop stability. As a member of the broader category of switching voltage regulators and DC-DC converters, it sits above linear regulators in efficiency for high input-to-output voltage deltas, converting excess voltage as switching losses rather than heat.
Key features include 4.5V to 36V input range, 3.3V fixed output (AME variant), 1A continuous load current, peak-current-mode control with internal compensation, and PFM/PWM auto-skipping at light loads for high efficiency. The internal MOSFETs and synchronous rectification eliminate the external Schottky diode. Hiccup-mode overcurrent protection, thermal shutdown, and an enable/UVLO pin provide fault handling for industrial and consumer rails. Efficiency peaks above 88% at 12Vin/3.3Vout/0.5A and remains above 80% across the 4.5V to 36V input range.
Typical applications include industrial 24V/12V point-of-load regulation, factory automation sensors, HVAC control boards, distributed 5V/3.3V rails, and space-constrained embedded systems requiring minimal external component count. The 3 mm x 3 mm footprint and integrated inductor make it especially attractive when a discrete buck solution would consume more than 4x the PCB area.
When designing with the MAXM17630AME+T, place the input ceramic capacitor as close as possible to the PGND and IN pins to minimize switching noise injection; a 1 µF to 4.7 µF X7R ceramic is typically sufficient. The exposed pad must be soldered to a copper pour of at least 25 mm² to keep the junction temperature below 125 °C at full 1A load and 36V input. Avoid routing analog signal traces directly beneath the module to prevent radiated switching noise coupling.
This page synthesizes distributor pricing, drop-in alternatives drawn from the MAXM17630/MAXM17631/MAXM17632 family, application notes, and practical PCB layout guidance that goes beyond the manufacturer datasheet alone.
直接替换替代料： MAXM17630AME+T ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MAXM17631AME+T
✅ 直接替换📋 参考替代料（不在目录中）
MAXM17632AME+T
✅ 直接替换📋 参考替代料（不在目录中）
MAXM17630BME+T
✅ 直接替换📋 参考替代料（不在目录中）
MAXM17630AME+
✅ 直接替换📋 参考替代料（不在目录中）
MAXM17633AME+T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAXM17630AME+T 最大额定值与电气特性
| 拓扑 | Synchronous Step-Down (Buck) DC-DC Module |
| 输入电压范围 | 4.5 V to 36 V |
| Output Voltage (AME variant) | 3.3 V fixed |
| 最大输出电流 | 1 A |
| 开关频率 | Up to 1.5 MHz (factory trimmed) |
| Control Mode | Peak Current Mode with Internal Compensation |
| Light-Load Operation | PFM/PWM Auto-Skipping |
| Integrated Inductor | Yes (internal) |
| Integrated MOSFETs | Yes (high-side + synchronous low-side) |
| Enable / UVLO Pin | Yes |
| 过流保护 | Hiccup Mode |
| Thermal Protection | Thermal Shutdown |
| 工作温度范围 | -40 °C to +125 °C (junction) |
| 封装 | 16-pin EMGA uSLIC, 3 mm x 3 mm |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
MAXM17630AME+T 引脚配置
| 引脚 1 | IN — Input voltage (4.5V to 36V) |
| 引脚 2 | EN/UVLO — Enable input / undervoltage lockout |
| 引脚 3 | NC — Not connected (per datasheet) |
| 引脚 4 | NC — Not connected (per datasheet) |
| 引脚 5 | BST — Bootstrap for high-side gate drive |
| 引脚 6 | LX — Switch node (internal connection to inductor) |
| 引脚 7 | PGND — Power ground |
| 引脚 8 | PGND — Power ground (exposed pad) |
| 引脚 9 | PGND — Power ground |
| 引脚 10 | NC — Not connected (per datasheet) |
| 引脚 11 | NC — Not connected (per datasheet) |
| 引脚 12 | FB — Feedback (fixed 3.3V: tie to VOUT) |
| 引脚 13 | COMP — Compensation (internal, no connect externally) |
| 引脚 14 | OUT — Regulated 3.3V output |
| 引脚 15 | OUT — Regulated 3.3V output |
| 引脚 16 | PGND — Power ground |
典型应用
MAXM17630AME+T 适用于 6 应用s: Industrial 24V Point-of-Load Regulation, HVAC Control Board Power, Factory Automation Sensor Hub, Distributed 5V/3.3V Rail for Embedded Systems, Building Automation and LED Driver Auxiliary Rail, Portable and Battery-Backed Industrial Instruments.
Industrial 24V Point-of-Load Regulation
The MAXM17630AME+T accepts the industrial-standard 24V bus directly and steps it down to 3.3V at 1A in a 16-pin 3mm x 3mm EMGA module, eliminating the need for a pre-regulator. Its 4.5V to 36V input window tolerates 24V +/-10% transients common on factory PLC backplanes. The integrated MOSFETs, inductor and compensation reduce external BOM to three capacitors and a feedback resistor, shrinking the PoL footprint by 60-70% versus a discrete buck. PFM/PWM auto-skipping keeps efficiency above 80% at 100 mA loads, critical for energy-harvesting or battery-backed sensors on the same 24V rail.
推荐
HVAC Control Board Power
HVAC controllers run from 24VAC rectified rails that swing from 18V to 36V, exactly the input range the MAXM17630AME+T supports. Its 1A continuous output drives microcontroller cores, sensors and relay coils without a heatsink. The exposed thermal pad soldered to 25 mm² of copper keeps junction temperature below 110°C at full load and 36V input, meeting HVAC electronics enclosure thermal limits. Internal hiccup-mode overcurrent protection prevents latch-up during relay-coil inrush, and the EN/UVLO pin supports housekeeping MCU-initiated power sequencing during brown-out events.
推荐
Factory Automation Sensor Hub
Distributed IO modules in factory automation stacks must convert 24V backplane power to 3.3V or 5V for sensor front-ends. The MAXM17630AME+T integrates the entire buck converter into a 3mm x 3mm EMGA module, freeing PCB real estate for additional sensor channels or isolation barriers. Synchronous rectification eliminates the external Schottky diode typical of older designs, reducing part count by one component per rail. The 1.5 MHz switching frequency keeps the input ripple spectrum above the 30 MHz CISPR 25 conducted-emissions band when proper input filtering is applied.
推荐
Distributed 5V/3.3V Rail for Embedded Systems
Embedded SBCs and MCU carrier boards often need a 3.3V rail derived from a 12V or 24V main supply. The MAXM17630AME+T provides 1A at 3.3V from any 4.5V to 36V source, letting the same module serve 5V, 12V and 24V motherboards without redesign. Internal peak-current-mode control with factory-tuned compensation eliminates the loop-stability work normally required with discrete designs. PFM mode at light loads preserves battery life in mobile or battery-backed embedded systems, and the enable pin allows MCU-driven sequencing during deep-sleep wake-up cycles.
推荐
Building Automation and LED Driver Auxiliary Rail
Building automation controllers and constant-current LED drivers often need an auxiliary 3.3V logic rail alongside the main high-voltage LED drive stage. The MAXM17630AME+T supplies this rail from a 12V to 24V bus with 1A of headroom for wireless radios, microcontrollers and display drivers. The integrated inductor avoids the audible noise that discrete inductors sometimes produce at light loads, an important consideration for in-ceiling or in-wall installations. Thermal-shutdown and hiccup-mode OCP protect the module against fault conditions during LED array mis-wiring.
推荐
Portable and Battery-Backed Industrial Instruments
Handheld test instruments and battery-backed data loggers need a wide-input buck that can run from a 4-cell NiMH pack (4.5V minimum) up to a 36V external DC source. The MAXM17630AME+T covers this entire range with 1A of output, replacing a discrete buck plus LDO post-regulator chain. PFM light-load mode holds efficiency above 70% at 1 mA loads, extending battery life during long-term data acquisition. The 16-pin EMGA uSLIC footprint fits inside tight handheld enclosures where board area is at a premium.
推荐
推荐产品汇总
工程参考数据： MAXM17630AME+T ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MAXM17631AME+T | MAXM17632AME+T | MAXM17630BME+T | MAXM17630AME+ | MAXM17633AME+T |
|---|---|---|---|---|---|---|
| Package | EMGA-16 (3x3) uSLIC | EMGA-16 (3x3) uSLIC - same | EMGA-16 (3x3) uSLIC - same | EMGA-16 (3x3) uSLIC - same | EMGA-16 (3x3) uSLIC - same | EMGA-16 (3x3) uSLIC - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Output Current | 1 A | 1.5 A | 2 A | 1 A | 1 A | 1 A |
| Input Voltage Range | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V |
| Output Voltage | 3.3 V fixed | 3.3 V fixed | 3.3 V fixed | 5 V fixed | Adjustable 0.9V-12V | 5 V fixed |
| Switching Frequency | Up to 1.5 MHz | Up to 1.5 MHz | Up to 1.5 MHz | Up to 1.5 MHz | Up to 1.5 MHz | Up to 1.5 MHz |
| Integrated Inductor | Yes | Yes | Yes | Yes | Yes | Yes |
| Control Mode | Peak Current Mode | Peak Current Mode | Peak Current Mode | Peak Current Mode | Peak Current Mode | Peak Current Mode |
关键差异点
- Highest current capability in the same EMGA-16 footprint within the MAXM1763x family （对比 MAXM17631AME+T)
- Smallest fully-integrated 1A buck module in a 3mm x 3mm package （对比 MAXM17632AME+T (2A))
- Himalaya factory-tuned internal compensation eliminates external feedback components （对比 MAXM17630AME+ (adjustable))
设计说明
Estimated: at full 36V input, 3.3V output and 1A load, internal dissipation is approximately (36V - 3.3V) x 1A x (1 - efficiency)/efficiency, on the order of 1.0W to 1.5W. The exposed pad MUST be soldered to a ground copper pour of at least 25 mm² to keep the junction temperature below the 125 °C thermal-shutdown limit. Without adequate copper, expect thermal shutdown at 36V input and 1A load within a few minutes.
Place the input ceramic capacitor (1 µF to 4.7 µF X7R, 50V rating) as close as possible to the IN and PGND pins to minimize switching-node ringing. Place the output ceramic capacitor (22 µF to 47 µF X7R, 10V rating) within 2 mm of the OUT pins. Keep the feedback trace short and away from the LX switch node to avoid noise injection. Avoid routing analog signal traces directly beneath the module.
The MAXM17630AME+T switches at up to 1.5 MHz, placing fundamental and harmonic energy above the 30 MHz CISPR 25 conducted-emissions band where filtering is easier. For EN 55022 / FCC Part 15 Class B compliance, add a small LC pi-filter on the input (10 µH inductor + 2 x 4.7 µF X7R caps) and ensure the input return path is a wide ground pour. The factory-tuned internal compensation reduces the need for additional EMI snubbers.
Do not exceed 36V input - transients above 40V can permanently damage the internal MOSFETs. Do not operate without the exposed pad soldered - this is the primary heat path. Do not load the output above 1A continuous, as this triggers hiccup-mode overcurrent protection. Avoid using output capacitors smaller than 22 µF - the loop becomes unstable and may oscillate at low duty cycles.
The fixed 3.3V variant (AME) ties the FB pin to VOUT internally; no external resistor divider is needed. For applications requiring remote sensing, place a 10 µF local bypass at the load and a small ferrite bead between the module output and the load. The EN/UVLO pin has a precision threshold and a 1 µA internal pull-up; drive it with an open-drain transistor or a logic-level GPIO. A 100 kΩ resistor from EN to GND disables the module when left floating.
合规信息
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified - choose MAXM17630 automotive-grade variants for vehicle applications. Halogen-free status not explicitly stated in available web data.
