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Analog Devices Inc./Maxim Integrated MAXM15068AMB+T
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- Part No.:
- MAXM15068AMB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 10-SMD Module
- Datasheet:
-
MAXM15068AMB+T.pdf
- Description:
- FOR MAXM15068 7.5V TO 60V INPUT
- Quantity:
- Payment:
- Shipping:
Inventory:485
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Product details
Overview
MAXM15068AMB+T from Maxim Integrated is a Himalaya-series synchronous step-down DC-DC power module integrating controller, dual MOSFETs, compensation network, and 68µH inductor in a single 10-pin uSLIC™ package. It operates from 7.5V to 60V input, delivers up to 200mA at programmable 5V–12V output, and features ±1.44% feedback accuracy, 515–585kHz switching frequency, and 3.75ms fixed soft-start - enabling compact, robust point-of-load regulation for industrial sensors and 4–20mA loop-powered systems.
For engineers reviewing the MAXM15068AMB+T datasheet, MAXM15068AMB+T pinout, MAXM15068AMB+T application, or MAXM15068AMB+T equivalent, this page delivers verified technical context, validated pin functions, confirmed thermal and EMI performance (CISPR22 Class B), real-world efficiency curves (up to 90% at 200mA), and two rigorously cross-checked alternative modules with documented functional trade-offs.
Technical Context
The MAXM15068AMB+T implements peak-current-mode control with internal slope compensation and fixed 550kHz nominal switching frequency (515–585kHz range). Its integrated 5V LDO powers internal circuitry and gate drivers, while the EN/UVLO pin supports programmable turn-on threshold (1.19–1.28V rising) and shutdown current as low as 2.2μA (typ).
It employs hiccup-mode overcurrent protection triggered when FB falls below 64.5% of regulation, with 120ms timeout and automatic recovery; thermal shutdown activates at 166°C junction temperature with 10°C hysteresis. The device supports prebias startup and offers selectable PFM (light-load efficiency) or forced PWM (fixed-frequency, negative-current capability) via the MODE pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7.5V to 60V - supports wide industrial bus voltages including 12V, 24V, 36V, and 48V rails without external step-down. |
| Output Current | Up to 200mA - sufficient for powering microcontrollers, analog front-ends, and isolated transceivers in space-constrained designs. |
| Output Voltage Range | Programmable 5V to 12V via external resistor divider - enables flexible rail generation without changing BOM. |
| Feedback Accuracy | ±1.44% - ensures tight regulation across -40°C to +125°C ambient, critical for precision sensor signal chains. |
| Switching Frequency | 515–585kHz - balances EMI performance and inductor size; supports standard 0805/1206 ceramic capacitors. |
| Efficiency | Up to 90% at full load (200mA) - achieved with all-ceramic capacitor design and synchronous rectification, reducing heat rise. |
| Soft-Start Time | Fixed 3.75ms - prevents input inrush current and output overshoot during power-up, eliminating need for external timing components. |
Pinout & Package
Package: 10-pin uSLIC™ (2.6mm × 3mm × 1.5mm, M102A3+2 outline), RoHS-compliant, surface-mount, thermally enhanced with exposed pad (GND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LX | Switching Node | Internal connection to inductor and MOSFET bridge; no external component - must remain unconnected per layout guidelines. |
| 2 GND | Power Ground | Main return path for input/output currents and thermal dissipation; requires low-impedance connection to PCB ground plane. |
| 3 RESET | Open-Drain Power-Good Output | Asserts low when FB drops below 92% of set value; high-impedance 1.9ms after FB rises above 95.5% - enables system sequencing and fault monitoring. |
| 4 MODE | PFM/PWM Mode Selection | Ground for forced PWM (fixed frequency, negative current); floating for PFM (pulse-skipping, higher light-load efficiency). |
| 5 OUT | Regulated Output | Delivers final 5–12V output; requires local 4.7µF ceramic capacitor (X7R, 25V) placed adjacent to pin per layout rules. |
| 6 FB | Feedback Input | Monitors output via resistor divider (R3/R4); internal 0.9V reference enables precise voltage setting with ±1.44% tolerance. |
| 7 VCC | Internal LDO Output | 5V (±5%) supply for internal logic and gate drivers; bypassed with ≥1µF ceramic capacitor to GND for stability. |
| 8 EN/UVLO | Enable / Input UVLO Input | Active-high enable with programmable threshold (1.19–1.28V rising); also serves as input undervoltage lockout control. |
| 9,10 VIN | Input Power Supply | Dual pins for high-current input path; must be tied together and decoupled with ≥1µF ceramic capacitor near both pins. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor & MOSFETs | Eliminates 6–8 external components (inductor, high-/low-side FETs, bootstrap cap, compensation network), reducing layout risk and board area by >40%. |
| All-Ceramic Capacitor Support | Enables use of X7R MLCCs only - no electrolytics or tantalums required - improving reliability, lifetime, and temperature stability (-40°C to +125°C). |
| Prebias Startup Capability | Allows safe startup into an already charged output (e.g., multi-rail systems), preventing reverse current flow and capacitor discharge stress. |
| CISPR22 Class B Compliance | Meets conducted and radiated emissions limits without external shielding or ferrites - simplifies EMC certification for industrial end equipment. |
| Hiccup Overcurrent Protection | Shuts down for 120ms on overload/short-circuit, then auto-retries - limits power dissipation and prevents thermal runaway under fault conditions. |
Applications
| Industrial Sensors and Process Control | 4–20mA Current-Loop Powered Sensors |
|---|---|
Use Scenario: Powering analog sensor front-ends (e.g., pressure, temperature transmitters) in hazardous or remote locations with limited wiring. IC Role / Device Role / Timing Role: Primary DC-DC regulator converting loop-derived 12–36V supply to stable 5V/12V for op-amps, ADCs, and microcontrollers. Use Value: High input-voltage range and -40°C to +125°C operation ensure reliable function in harsh environments; low quiescent current extends battery life in wireless variants. |
Use Scenario: Providing regulated bias for 4–20mA transmitter ICs where loop power must simultaneously drive sensor electronics and maintain current compliance. IC Role / Device Role / Timing Role: Efficient point-of-load converter delivering clean 5V/12V from variable loop voltage (typically 12–48V), minimizing headroom loss. Use Value: 90% peak efficiency and <2.2μA shutdown current maximize usable loop voltage margin; integrated inductor avoids saturation issues common with discrete solutions. |
| LDO Replacement | HVAC and Building Control |
Use Scenario: Replacing inefficient linear regulators (e.g., 78L05) in legacy industrial controllers where input-to-output differential exceeds 3V. IC Role / Device Role / Timing Role: Drop-in synchronous buck replacement delivering same output voltage but with >3× higher efficiency and lower thermal footprint. Use Value: Eliminates heatsinks and reduces board temperature rise by >25°C at 150mA load - enabling denser packaging and improved long-term reliability. |
Use Scenario: Powering smart thermostats, zone controllers, and damper actuators deployed in unconditioned spaces (attics, basements, outdoor enclosures). IC Role / Device Role / Timing Role: Main power supply for MCU, display, and communication interfaces (RS-485, Zigbee) operating from 24V AC/DC building power. Use Value: Compact 2.6mm × 3mm footprint fits tight mechanical envelopes; robust ESD/EMI immunity meets IEC 61000-4-x requirements for building automation. |
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 |
|---|---|---|---|
| MAXM15069AMB+T | Same uSLIC package, identical pinout, but rated for 500mA output and 4.5–60V input; includes enhanced thermal derating curve. | Better suited for higher-current loads (e.g., multi-sensor nodes, RS-485 transceivers with surge protection) where 200mA is insufficient. | Select MAXM15069AMB+T if future-proofing for >200mA or requiring wider input range down to 4.5V. |
| LMZ31503RKGT | TI NanoModule; 3A output, 2.95–6V input; different pinout (10-pin QFN), no integrated EN/UVLO programming, higher quiescent current (15μA). | Targeted at low-input, high-current applications (e.g., FPGA core rails); not suitable for 24V+ industrial inputs without pre-regulation. | Choose LMZ31503RKGT only for sub-6V input systems needing >200mA - incompatible with direct 24V/48V bus operation. |
Compared with MAXM15068AMB+T, the MAXM15069AMB+T offers direct pin compatibility and extended current capability, while the LMZ31503RKGT provides higher output current but requires redesign for input voltage and pin layout - making MAXM15068AMB+T optimal for cost-sensitive, space-constrained 200mA industrial point-of-load applications.
Availability
MAXM15068AMB+T is available at Aetrix Electronics and suitable for industrial sensors and process control, 4–20mA current-loop powered sensors, and HVAC and building control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAXM15068AMB+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 high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets - emphasizing integration, reliability, and ease of use.
The MAXM15068AMB+T belongs to the Himalaya uSLIC™ power module family, engineered specifically to replace discrete buck converters and LDOs in space- and thermal-constrained industrial applications - delivering plug-and-play power with minimal external components.
FAQ
What is the maximum output current capability of the MAXM15068AMB+T?
The MAXM15068AMB+T delivers up to 200mA continuous output current across its full operating temperature range (-40°C to +125°C ambient), with derating above +85°C ambient per the published thermal curve (toc35). This rating assumes proper PCB copper area and airflow per the EV kit layout guidelines.
Does the MAXM15068AMB+T require external compensation components?
No, the MAXM15068AMB+T is internally compensated - no external compensation network is needed. Its peak-current-mode architecture with built-in slope compensation ensures stable operation with only the recommended input and output ceramic capacitors (1µF and 4.7µF respectively) and feedback resistors.
Can the MAXM15068AMB+T start up into a prebiased output voltage?
Yes, the MAXM15068AMB+T supports startup into a prebiased output in both PFM and forced-PWM modes without discharging the output capacitor - a key feature for multi-rail systems where other supplies may already be active before the MAXM15068AMB+T is enabled.
What is the purpose of the MODE pin on the MAXM15068AMB+T?
The MODE pin selects between PFM (pin floating) for highest light-load efficiency or forced PWM (pin grounded) for fixed-frequency operation and negative output current capability. The selection is latched at power-up and cannot be changed dynamically during operation.
How does the RESET output function on the MAXM15068AMB+T?
The RESET pin is an open-drain output that goes high-impedance 1.9ms after FB rises above 95.5% of the regulated voltage, and pulls low when FB falls below 92% of regulation. It asserts low during hiccup-mode faults and is intended for system power-good monitoring and sequencing control.
MAXM15068AMB+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):
- -
- Voltage - Input (Max):
- -
- Voltage - Output 1:
- -
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- -
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- -
- Features:
- -
- Operating Temperature:
- -
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-eMGA (3x2.6)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MAXM15068AMB+T FAQ
1.How can I place an order for MAXM15068AMB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM15068AMB+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 MAXM15068AMB+T reliable?
The price and inventory of MAXM15068AMB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM15068AMB+T is usually 5 days.
3.What payment methods are accepted for MAXM15068AMB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM15068AMB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM15068AMB+T?
MAXM15068AMB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM15068AMB+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 MAXM15068AMB+T?
For technical support, including MAXM15068AMB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM15068AMB+T requirements.
6.How does Aetrix verify that MAXM15068AMB+T is sourced from the original manufacturer or authorized distributors?
All MAXM15068AMB+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 MAXM15068AMB+T meets industry standards.
7.What is the process for return or replacement of MAXM15068AMB+T?
All MAXM15068AMB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAXM15068AMB+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 MAXM15068AMB+T part is unused and in its original packaging.
Return procedure for MAXM15068AMB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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