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Analog Devices Inc./Maxim Integrated MAXM15466AMB+
- Part No.:
- MAXM15466AMB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 10-SMD Module
- Datasheet:
-
MAXM15466AMB+.pdf
- Description:
- DC DC CONVERTER 5V
- Quantity:
- Payment:
- Shipping:
Inventory:4,953
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Product details
Overview
MAXM15466AMB+ from Maxim Integrated is a fixed 5V, 300mA synchronous step-down DC-DC power module with integrated controller, MOSFETs, compensation, and inductor. It operates from 4.5V to 42V input, delivers ±1.5% output voltage accuracy, features peak-current-mode control, and includes open-drain power-good (RESET) and programmable EN/UVLO. It is used in industrial sensors, 4–20mA loop-powered devices, and USB Type-C loads.
For engineers reviewing the MAXM15466AMB+ datasheet, MAXM15466AMB+ pinout, MAXM15466AMB+ application, or MAXM15466AMB+ equivalent, this page provides verified electrical parameters, thermal performance data, soft-start timing, feedback regulation behavior, and real-world efficiency curves across load and input conditions - all specific to the MAXM15466AMB+ fixed-5V variant.
Technical Context
The MAXM15466AMB+ employs peak-current-mode control with fixed 3.75ms soft-start and supports both PWM and PFM operation modes via the MODE pin. Its internal LDO (VCC) regulates at 5V ±2.5% over 6–42V input and supplies bias for internal circuitry.
It integrates hiccup-mode overcurrent protection, thermal shutdown at 166°C (10°C hysteresis), and meets CISPR22 Class B conducted/radiated emissions without external filtering. The device supports prebias startup and operates across –40°C to +125°C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00V ±1.5% (guaranteed over –40°C to +125°C; enables direct replacement of LDOs without external feedback resistors) |
| Input Voltage Range | 4.5V to 42V (supports wide industrial and automotive battery-supplied systems, including 24V and 36V rails) |
| Max Output Current | 300mA continuous (derates above +85°C ambient per thermal curve; no external current-sense resistor required) |
| Switching Frequency | 550kHz typical (enables compact external capacitor selection; fixed frequency simplifies EMI filter design) |
| Soft-Start Time | 3.75ms fixed (limits inrush current during power-up; eliminates need for external soft-start circuitry) |
| Shutdown Current | 2.2μA typical (enables ultra-low-power standby in battery-operated equipment) |
| Feedback Accuracy | ±1.5% at VFB = 5.00V (ensures stable 5V rail under line/load transients; referenced to internal 5V regulator) |
Pinout & Package
MAXM15466AMB+ uses a 10-pin, 2.6mm × 3mm × 1.5mm uSLIC™ package (package code M102A3+2), optimized for high-density PCB layouts and thermal performance on four-layer boards (θJA = 41.56°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - LX | Switching node | Internal connection to integrated inductor and high-side MOSFET drain; no external connection permitted |
| 2 - GND | Power ground | Primary return path for power and control circuits; must be connected directly to low-impedance ground plane |
| 3 - RESET | Open-drain power-good | Asserts low when FB falls below 92% of setpoint; releases high-impedance 1.9ms after FB rises above 95.5% |
| 4 - MODE | PFM/PWM mode select | Pull to GND for forced PWM; leave unconnected for auto PFM/PWM transition at light load |
| 5 - OUT | Regulated output | 5V output node; connects to output capacitor (COUT) and load; requires ≥10μF ceramic capacitance |
| 6 - FB | Feedback input | Internally tied to 5.00V reference; monitors regulated output; no external resistor network needed for fixed-VOUT variant |
| 7 - VCC | Bias supply output | 5V ±2.5% LDO output; powers internal circuitry; requires 1μF decoupling capacitor |
| 8 - EN/UVLO | Enable / UVLO input | Active-high enable with rising threshold at 1.215V; falling threshold at 1.09V; true shutdown below 0.75V |
| 9 - VIN | Main input supply | 4.5V–42V input; requires ≥1μF ceramic input capacitor close to pin; absolute max 48V |
| 10 - NC | No connect | Not internally bonded; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Eliminates electrolytic or tantalum capacitors; reduces board area and improves reliability over temperature |
| Internally compensated | Removes need for external compensation network; simplifies design and validation for fixed 5V output |
| Prebias startup capability | Allows safe startup into precharged output; prevents reverse current flow in hot-swap or backup-power scenarios |
| Hiccup overcurrent protection | Auto-retries after fault clears; avoids latch-up and enables self-recovery in short-circuit events |
| CISPR22 Class B compliance | Meets radiated/conducted EMI limits without external filters - verified at full 300mA load and 24V input |
| –40°C to +125°C operating range | Rated for harsh industrial environments; junction temperature up to +150°C ensures long-term reliability |
Applications
| Industrial Sensors and Encoders | 4–20mA Current-Loop Powered Sensors |
|---|---|
|
Use Scenario: Powering rotary encoders and analog pressure/temperature transmitters in factory automation cabinets. IC Role / Device Role / Timing Role: Primary 5V point-of-load regulator converting 24V PLC bus to clean, low-noise 5V for sensor signal conditioning and microcontroller logic. Use Value: Delivers stable 5V at 300mA with <10mV ripple (PWM mode) and withstands 42V transients common in industrial wiring. |
Use Scenario: Supplying 5V to loop-powered smart sensors where power is derived from the 4–20mA loop itself. IC Role / Device Role / Timing Role: Efficient step-down converter enabling higher functionality within tight 3.5–36V loop compliance window. Use Value: Achieves >85% efficiency at 50mA load (PFM mode), extending loop margin and supporting digital diagnostics. |
| LDO Replacement | USB Type-C Powered Loads |
|
Use Scenario: Replacing discrete 5V LDOs in space-constrained IoT edge nodes with wide-input industrial power rails. IC Role / Device Role / Timing Role: Drop-in 5V regulator with integrated inductor, eliminating external magnetics and reducing BOM count by ≥6 components. Use Value: Reduces solution size by >60% vs. typical LDO + filter; maintains ±1.5% regulation across 4.5–42V input variation. |
Use Scenario: Providing regulated 5V to USB Type-C peripheral controllers, PD sink logic, and status LEDs in portable test equipment. IC Role / Device Role / Timing Role: Input-stage buck converter accepting variable adapter voltages (5–20V) and delivering clean 5V at up to 300mA. Use Value: Supports USB-C source negotiation while maintaining <2.2μA shutdown current for battery-backed sleep states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output DC-DC power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAXM15465AMB+ | Fixed 3.3V output; identical package, pinout, and feature set except FB reference and output voltage | Used where 3.3V logic rails dominate (e.g., MCU cores, SPI peripherals); not interchangeable without board revision | Select MAXM15465AMB+ only when system requires 3.3V - no rework needed beyond output capacitor value adjustment |
| RECOM R-78E5.0-0.5 | 5V/500mA module; wider input (6.5–36V); no MODE or RESET pins; lower efficiency at light load due to fixed-frequency operation | Suitable for cost-sensitive consumer applications; lacks hiccup OCP and prebias startup - less robust in industrial use | Choose RECOM R-78E5.0-0.5 only for non-critical 5V loads where RESET monitoring and transient robustness are unnecessary |
Compared with MAXM15465AMB+, the MAXM15466AMB+ provides higher output voltage for 5V-tolerant interfaces, while compared with RECOM R-78E5.0-0.5, it offers superior protection features, tighter regulation, and verified EMI compliance - critical for industrial and USB-C designs.
Availability
MAXM15466AMB+ is available at Aetrix Electronics and suitable for industrial sensors and encoders, 4–20mA loop-powered sensors, and USB Type-C powered loads requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAXM15466AMB+ 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 - including MAXM15466AMB+ - was engineered to replace discrete buck regulators and LDOs with fully integrated, thermally optimized, and EMI-compliant modules for space- and reliability-constrained applications.
FAQ
What is the output voltage tolerance of the MAXM15466AMB+ over temperature and line?
The MAXM15466AMB+ guarantees ±1.5% output voltage accuracy over the full –40°C to +125°C ambient temperature range and 4.5V to 42V input voltage range. This specification is ensured by internal trimming of the feedback reference and validated across production lots - not just typical values - making it suitable for precision 5V rail applications without external calibration.
Does the MAXM15466AMB+ require external compensation components?
No, the MAXM15466AMB+ is internally compensated for its fixed 5V output configuration. No external RC networks or type-II/type-III compensators are needed. This eliminates tuning effort and ensures stability across all recommended input/output capacitor combinations specified in the datasheet, including 10μF ceramic output capacitance.
Can the MAXM15466AMB+ start up into a prebiased output?
Yes, the MAXM15466AMB+ supports prebias startup. When enabled, it safely ramps the output from an existing voltage (e.g., 2V) without injecting reverse current into the output rail. This behavior is confirmed in the "Startup Through Enable (2V Prebias)" oscilloscope waveforms (Fig. toc58/toc64) and is essential for hot-swap and redundant power systems.
What is the maximum ambient temperature at which the MAXM15466AMB+ delivers full 300mA output current?
The MAXM15466AMB+ delivers full 300mA output current up to +85°C ambient temperature on a standard four-layer evaluation board. Above +85°C, output current derates linearly to zero at +125°C ambient, as shown in Figure toc91. Derating is governed by thermal shutdown activation at +166°C junction temperature.
Is the MAXM15466AMB+ compliant with CISPR22 Class B emissions without external filtering?
Yes, the MAXM15466AMB+ passes CISPR22 Class B conducted and radiated emissions limits without any external EMI filter components - verified at 24V input, 5V/300mA output, using only the recommended 1μF CIN and 10μF COUT ceramic capacitors. Test data is published in Figures toc92 and toc93 of the official datasheet.
MAXM15466AMB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 10-SMD Module
- Packaging:
- Strip
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 42V
- Voltage - Output 1:
- 5V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 300mA
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- OCP, OTP, UVLO
- 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:
- -
MAXM15466AMB+ FAQ
1.How can I place an order for MAXM15466AMB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM15466AMB+ 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 MAXM15466AMB+ reliable?
The price and inventory of MAXM15466AMB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM15466AMB+ is usually 5 days.
3.What payment methods are accepted for MAXM15466AMB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM15466AMB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM15466AMB+?
MAXM15466AMB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM15466AMB+ 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 MAXM15466AMB+?
For technical support, including MAXM15466AMB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM15466AMB+ requirements.
6.How does Aetrix verify that MAXM15466AMB+ is sourced from the original manufacturer or authorized distributors?
All MAXM15466AMB+ 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 MAXM15466AMB+ meets industry standards.
7.What is the process for return or replacement of MAXM15466AMB+?
All MAXM15466AMB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAXM15466AMB+, 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 MAXM15466AMB+ part is unused and in its original packaging.
Return procedure for MAXM15466AMB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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