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Analog Devices Inc./Maxim Integrated MAXM15463AMB+T
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- Part No.:
- MAXM15463AMB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 10-SMD Module
- Datasheet:
-
MAXM15463AMB+T.pdf
- Description:
- IC REG BUCK 3.3V 300MA 10EMGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,937
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Product details
Overview
MAXM15463AMB+T from Maxim Integrated is a fixed 3.3V, 300mA synchronous step-down DC-DC power module with integrated controller, MOSFETs, compensation, and inductor in a 10-pin uSLIC™ package. It operates from 4.5V to 42V input, delivers ±1.5% feedback accuracy, features peak-current-mode control, and includes open-drain RESET output - ideal for industrial sensors and 4–20mA loop-powered devices.
For engineers reviewing the MAXM15463AMB+T datasheet, MAXM15463AMB+T pinout, MAXM15463AMB+T application, or MAXM15463AMB+T equivalent, key selection criteria include its fixed 3.3V output, 4.1ms soft-start, hiccup overcurrent protection, -40°C to +125°C ambient operation, and CISPR22 Class B EMI compliance - all critical for space-constrained, high-reliability industrial power rails.
Technical Context
The MAXM15463AMB+T implements peak-current-mode control with internal compensation, enabling stable regulation without external loop components. Its fixed 3.3V output is set by internal feedback resistors (3.30V nominal, 3.25V–3.35V min/max), eliminating the need for external FB divider networks required by the adjustable MAXM15462 variant.
It supports dual operating modes via the MODE pin: PWM for consistent switching frequency (465–535kHz) under full load, and PFM for ultra-low quiescent current (95μA typ) at light loads. The integrated LDO supplies VCC (4.75–5.25V) from VIN, and the open-drain RESET pin asserts low when FB falls below 92% of regulation, with 2ms delay on recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 42V - supports wide industrial input rails including 12V, 24V, and 36V systems without pre-regulation. |
| Output Voltage | Fixed 3.3V ±1.5% - eliminates external resistor divider, reduces BOM count and layout sensitivity. |
| Max Output Current | 300mA - sufficient for microcontrollers, sensors, and analog front-ends in compact industrial modules. |
| Switching Frequency | 465–535kHz - enables use of small external capacitors and avoids AM radio band interference. |
| Soft-Start Time | 4.1ms (fixed) - prevents inrush current during power-up, protecting upstream supplies and downstream loads. |
| Shutdown Current | 2.2μA (typ) - enables ultra-low-power sleep modes in battery-backed or energy-harvesting applications. |
| Operating Temp | -40°C to +125°C ambient - qualified for harsh environments including HVAC, motor controls, and factory automation. |
| EMI Compliance | CISPR22 Class B conducted & radiated - meets commercial/industrial emissions limits without external filtering beyond recommended 0.1µF + 0.68µF caps and 82µH choke. |
Pinout & Package
Package: 10-pin uSLIC™ (2.6mm × 3mm × 1.5mm, M102A3+2 outline), surface-mount, RoHS-compliant, with exposed thermal pad (connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LX | Switching node | Internal connection to inductor and high-side MOSFET drain - no external connection; must be routed with minimal loop area. |
| 2 GND | Power ground | Main return path for power and signal; requires low-impedance connection to PCB ground plane beneath module. |
| 3 RESET | Open-drain power-good | Pulls low when FB < 92% of 3.3V; high-impedance after 2ms delay when FB > 95.5% - used for system sequencing and fault monitoring. |
| 4 MODE | Mode selection | Ground for forced PWM; floating for automatic PFM/PWM transition - sets efficiency vs. noise trade-off. |
| 5 OUT | Regulated output | 3.3V supply rail; requires ≥10µF ceramic capacitor to GND for stability and transient response. |
| 6 FB | Feedback input | Internally tied to 3.3V output - no external divider needed; connects directly to OUT for validation and monitoring. |
| 7 VCC | LDO output | 5V internal supply for control circuitry; bypassed with ≥1µF ceramic cap to GND near pin. |
| 8 EN/UVLO | Enable/UVLO input | Active-high enable; threshold 1.19–1.28V rising - allows programmable turn-on voltage via resistor divider from VIN. |
| 9–10 VIN | Power input | Dual pins for low-inductance connection to 4.5–42V source; decoupled with ≥1µF ceramic cap placed adjacent to pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated inductor & power stage | Eliminates external inductor selection, layout tuning, and saturation risk - reduces design cycle by ~3 weeks. |
| All-ceramic capacitor support | Enables use of small, reliable X7R/X5R MLCCs instead of electrolytics - improves lifetime and temperature stability. |
| Prebias startup capability | Allows safe start-up into precharged output rails (e.g., hot-swap or backup systems) without reverse current or latch-up. |
| Hiccup overcurrent protection | Shuts down and auto-retries on sustained overload - protects against short circuits without requiring external current sense or shutdown logic. |
| Thermal shutdown with hysteresis | Triggers at 166°C junction, releases at 156°C - prevents thermal runaway while allowing recovery after transient overheating. |
| JESD22 ruggedness | Qualified to drop, shock, and vibration standards (B103/B104/B111) - suitable for transportation, robotics, and field-deployed equipment. |
Applications
| Industrial Sensors and Encoders | 4–20mA Current-Loop Powered Sensors |
|---|---|
Use Scenario: Powering rotary encoders and MEMS pressure sensors in PLC I/O modules with 24V bus input. IC Role / Device Role / Timing Role: Primary 3.3V local regulator delivering clean, stable supply to sensor ICs and ADCs. Use Value: Fixed 3.3V output ensures compatibility with standard SPI/I²C interfaces; ±1.5% accuracy maintains ADC reference integrity across temperature. | Use Scenario: Supplying loop-powered smart transmitters where power is derived from 4–20mA loop voltage. IC Role / Device Role / Timing Role: Efficient step-down converter extracting regulated 3.3V from variable loop voltage (typically 12–36V). Use Value: 4.5V minimum input enables operation down to 4mA × 250Ω = 1V drop + margin; 2.2μA shutdown current preserves loop compliance. |
| LDO Replacement | HVAC and Building Control |
Use Scenario: Replacing inefficient linear regulators in space-constrained HVAC controllers to reduce heat and improve efficiency. IC Role / Device Role / Timing Role: High-efficiency switching alternative to 3.3V LDOs, minimizing thermal dissipation in sealed enclosures. Use Value: >85% efficiency at 300mA (vs. ~40% for LDO at 24V→3.3V) cuts board temperature rise by >25°C, extending component life. | Use Scenario: Powering wireless sensor nodes and actuator drivers in smart thermostats and zone controllers. IC Role / Device Role / Timing Role: Compact, EMI-compliant 3.3V source for RF SoCs and motor drivers sharing same 24V rail. Use Value: CISPR22 Class B compliance ensures coexistence with Zigbee/Thread radios; 10-pin uSLIC footprint saves >60% board area vs. discrete buck solutions. |
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 |
|---|---|---|---|
| MAXM15462AMB+T | Adjustable 0.9V–5V output; requires external FB resistor divider; identical pinout and package. | Used where multiple output voltages are needed on same board or firmware-configurable rails are required. | Select MAXM15462AMB+T only if voltage flexibility outweighs added BOM cost and layout complexity. |
| LMZ31503RKGT | 3A output, larger 9.0mm × 7.5mm × 4.3mm QFN; 2.95–6V input; different pinout and thermal design requirements. | Suitable for higher-current applications (>300mA) where size and input range constraints allow larger footprint. | Choose LMZ31503RKGT only when output current exceeds 300mA; not a drop-in replacement due to incompatible package and pin mapping. |
Compared with MAXM15462AMB+T, the MAXM15463AMB+T simplifies design by removing FB divider components and reducing layout sensitivity, while LMZ31503RKGT offers higher current but sacrifices miniaturization and wide-input capability - making MAXM15463AMB+T optimal for compact, fixed-voltage 3.3V industrial rails.
Availability
MAXM15463AMB+T is available at Aetrix Electronics and suitable for industrial sensors and encoders, 4–20mA current-loop powered sensors, and HVAC and building control systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAXM15463AMB+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, high-reliability applications requiring simplified DC-DC conversion - emphasizing integration, ruggedness, and EMI performance over discrete solutions.
FAQ
What is the output voltage tolerance of the MAXM15463AMB+T?
The MAXM15463AMB+T provides a fixed 3.3V output with ±1.5% regulation accuracy over line, load, and temperature (-40°C to +125°C ambient). This is specified as 3.25V to 3.35V minimum/maximum under full-load conditions, ensuring compatibility with 3.3V logic and analog interfaces without additional post-regulation.
Does the MAXM15463AMB+T require external compensation components?
No, the MAXM15463AMB+T is internally compensated. Its peak-current-mode control architecture and integrated compensation network eliminate the need for external Type-II or Type-III compensation components, reducing design effort and improving consistency across production units.
Can the MAXM15463AMB+T operate with a prebiased output?
Yes, the MAXM15463AMB+T supports prebias startup. When enabled via the EN/UVLO pin, it safely starts into an already charged output rail without injecting reverse current or causing output overshoot - verified in typical application waveforms (e.g., toc59, toc60).
What is the purpose of the MODE pin on the MAXM15463AMB+T?
The MODE pin selects between PWM and PFM operation: tying MODE to GND forces continuous PWM mode (465–535kHz) for predictable EMI; leaving MODE unconnected enables automatic PFM at light loads to achieve 95μA typical quiescent current, optimizing efficiency in standby states.
How does the RESET pin function on the MAXM15463AMB+T?
The RESET pin is an open-drain output that pulls low when FB drops below 92% of its nominal 3.3V value (i.e., <3.036V), indicating undervoltage or fault. After FB rises above 95.5% (≥3.1605V), RESET returns to high-impedance after a 2ms delay - providing glitch-free power-good signaling for microcontroller reset sequencing.
MAXM15463AMB+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):
- 4.5V
- Voltage - Input (Max):
- 42V
- 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 (3x2.6)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MAXM15463AMB+T FAQ
1.How can I place an order for MAXM15463AMB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM15463AMB+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 MAXM15463AMB+T reliable?
The price and inventory of MAXM15463AMB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM15463AMB+T is usually 5 days.
3.What payment methods are accepted for MAXM15463AMB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM15463AMB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM15463AMB+T?
MAXM15463AMB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM15463AMB+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 MAXM15463AMB+T?
For technical support, including MAXM15463AMB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM15463AMB+T requirements.
6.How does Aetrix verify that MAXM15463AMB+T is sourced from the original manufacturer or authorized distributors?
All MAXM15463AMB+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 MAXM15463AMB+T meets industry standards.
7.What is the process for return or replacement of MAXM15463AMB+T?
All MAXM15463AMB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAXM15463AMB+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 MAXM15463AMB+T part is unused and in its original packaging.
Return procedure for MAXM15463AMB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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