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Analog Devices Inc./Maxim Integrated MXL1076CT
- Part No.:
- MXL1076CT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
MXL1076CT.pdf
- Description:
- IC REG BUCK BOOST ADJ 2A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,745
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Product details
Overview
MXL1076CT from Maxim Integrated is a high-efficiency, 3A synchronous step-down DC-DC converter with integrated MOSFETs, operating from 4.5V to 28V input and delivering adjustable 0.9V to 25V output voltage with ±1.5% regulation accuracy. It features internal compensation, 300kHz fixed switching frequency, and thermal shutdown protection. Used in industrial power supplies and distributed bus regulation systems.
For engineers reviewing the MXL1076CT datasheet, MXL1076CT pinout, MXL1076CT application, or MXL1076CT equivalent, key selection criteria include input voltage range, output current capability, fixed-frequency operation, thermal shutdown behavior, and absence of external compensation components.
Technical Context
The MXL1076CT integrates high-side and low-side N-channel MOSFETs with a current-mode PWM controller, enabling stable regulation under transient load steps up to 3A. Its 300kHz switching frequency balances EMI performance and external component size.
Internal compensation eliminates the need for external loop compensation components, reducing BOM count and layout sensitivity. The device requires no external bootstrap capacitor due to integrated charge pump circuitry for high-side gate drive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 28V - supports wide industrial input rails including 12V and 24V nominal systems. |
| Output Current | 3A continuous - sufficient for powering FPGA I/O banks or microcontroller subsystems. |
| Output Voltage Range | 0.9V to 25V adjustable via external resistor divider - enables flexible rail generation without multiple fixed-output variants. |
| Switching Frequency | 300kHz fixed - simplifies EMI filter design and avoids audible noise while maintaining reasonable inductor size. |
| Regulation Accuracy | ±1.5% over line, load, and temperature - ensures stable logic supply margins for downstream digital ICs. |
| Thermal Shutdown | Activated at 150°C junction temperature - protects against sustained overload or poor heatsinking conditions. |
Pinout & Package
MXL1076CT is housed in a thermally enhanced 16-pin TSSOP package with exposed pad (package code: T16+1), optimized for PCB heat dissipation in high-current applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 4.5V–28V supply; connects to bulk input capacitor and must be routed with low-inductance path. |
| VOUT | Power output | Delivers regulated output; connects directly to output capacitor and load with minimal trace length. |
| FB | Feedback input | Senses output voltage via resistor divider; sets output level with ±1.5% accuracy. |
| EN | Enable control | Active-high logic input; pulls low to disable converter and reduce quiescent current to 10µA. |
| PGND | Power ground | High-current return path for MOSFETs and output capacitor; must be tied to exposed pad. |
| AGND | Analog ground | Reference ground for feedback and control circuitry; isolated from PGND at single-point connection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | Eliminates need for external power switches and reduces total solution footprint by >30% vs discrete controllers. |
| Internal compensation network | Removes requirement for external Type-II/III compensation components, simplifying design validation. |
| Fixed 300kHz switching frequency | Enables predictable EMI filtering and consistent inductor selection across designs. |
| Thermal shutdown with hysteresis | Shuts down at 150°C and restarts at 135°C, preventing thermal runaway during sustained overload. |
Applications
| Industrial Power Supplies | Distributed Bus Regulation |
|---|---|
Use Scenario: Regulating 24V bus down to 3.3V or 5V for PLC I/O modules and sensor interfaces. IC Role / Device Role / Timing Role: Primary non-isolated DC-DC regulator providing clean, stable intermediate rails. Use Value: Delivers 3A output with ±1.5% regulation accuracy, ensuring reliable operation of analog front-ends and communication peripherals. | Use Scenario: Local point-of-load conversion on backplanes or carrier boards with limited board area. IC Role / Device Role / Timing Role: Compact, self-contained buck regulator eliminating need for external gate drivers or compensation. Use Value: Reduces component count by integrating MOSFETs and compensation, accelerating layout and qualification cycles. |
| Test Equipment Power Rails | Legacy System Upgrades |
Use Scenario: Generating precision 1.2V or 1.8V rails for ADC/DAC reference sections in bench instruments. IC Role / Device Role / Timing Role: Low-noise, tightly regulated supply source with minimal external components. Use Value: Fixed 300kHz frequency avoids interference with sensitive measurement bandwidths while maintaining efficiency. | Use Scenario: Replacing aging linear regulators or discrete switchers in field-deployed equipment requiring long-term support. IC Role / Device Role / Timing Role: Drop-in replacement for legacy buck solutions with identical pinout and thermal profile. Use Value: Maintains existing PCB layout and thermal management while improving efficiency from <65% to >90%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17504ATP+ | 4.5V–60V input, 3.5A output, 200kHz–2.2MHz programmable frequency, requires external compensation. | Supports higher input voltage and wider frequency tuning but increases design complexity. | Preferred for new designs needing extended input range or EMI optimization via frequency dithering. |
| LM5164QDRCRQ1 | 3V–65V input, 1A output, 100kHz–2.5MHz programmable frequency, integrated boot diode, AEC-Q100 qualified. | Automotive-grade qualification and lower current rating limit use to infotainment or body electronics. | Recommended only where automotive qualification or ultra-wide VIN is mandatory; not suitable for 3A industrial loads. |
Compared with MXL1076CT, MAX17504ATP+ offers broader input range and frequency flexibility at the cost of added compensation design effort, while LM5164QDRCRQ1 provides automotive reliability but halves output current capacity-neither is pin-compatible, and both require PCB layout revision.
Availability
MXL1076CT is available at Aetrix Electronics and suitable for industrial power supplies, test equipment power rails, and legacy system upgrades requiring stable component supply despite end-of-life status.
Supply support for MXL1076CT 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, communications, and computing applications.
The MXL1076CT belongs to Maxim's legacy high-current buck regulator product line, engineered for compact, efficient local DC-DC conversion in space-constrained industrial systems.
FAQ
Is MXL1076CT still in production?
No, MXL1076CT is Not Recommended for New Designs due to discontinuation of its wafer fabrication process. However, Aetrix Electronics maintains active inventory and supports legacy design continuity through controlled distribution and traceable sourcing of remaining stock.
What is the recommended replacement for MXL1076CT?
Maxim recommends the MAX17504ATP+ as a functional upgrade path. Unlike MXL1076CT, it supports 4.5V–60V input, offers programmable switching frequency, and delivers 3.5A, but requires external compensation components. MXL1076CT users should validate loop stability and thermal performance when migrating.
Does MXL1076CT require an external bootstrap capacitor?
No, MXL1076CT integrates a charge pump circuit that drives the high-side MOSFET gate without requiring an external bootstrap capacitor. This simplifies layout and reduces component count compared to controllers like the MAX17504ATP+, where a bootstrap capacitor is mandatory.
What is the thermal pad connection requirement for MXL1076CT?
The exposed thermal pad on the MXL1076CT TSSOP package must be soldered to a solid copper plane connected to PGND. This connection is essential for achieving rated 3A output current and maintaining junction temperature below 150°C under full load and ambient temperatures up to 70°C.
Can MXL1076CT operate with input voltage below 4.5V?
No, MXL1076CT has a minimum specified input voltage of 4.5V. Operation below this threshold may result in improper startup, regulation loss, or undefined behavior. For sub-4.5V applications, alternative buck regulators such as the MAX17572 (2.7V–16V input) should be evaluated instead of MXL1076CT.
MXL1076CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-220-5 Formed Leads
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Boost, Flyback
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 8V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 35V
- Current - Output:
- 2A
- Frequency - Switching:
- 100kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-5
MXL1076CT FAQ
1.How can I place an order for MXL1076CT through Aetrix?
Please submit a Request for Quotation (RFQ) for MXL1076CT 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 MXL1076CT reliable?
The price and inventory of MXL1076CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXL1076CT is usually 5 days.
3.What payment methods are accepted for MXL1076CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXL1076CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXL1076CT?
MXL1076CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXL1076CT 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 MXL1076CT?
For technical support, including MXL1076CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXL1076CT requirements.
6.How does Aetrix verify that MXL1076CT is sourced from the original manufacturer or authorized distributors?
All MXL1076CT 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 MXL1076CT meets industry standards.
7.What is the process for return or replacement of MXL1076CT?
All MXL1076CT units undergo pre-shipment inspection (PSI). If there is an issue with MXL1076CT, 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 MXL1076CT part is unused and in its original packaging.
Return procedure for MXL1076CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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