
Allicdata Part #: | MAX668EUB+TTR-ND |
Manufacturer Part#: |
MAX668EUB+T |
Price: | $ 0.60 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Maxim Integrated |
Short Description: | IC REG CTRLR MULT TOP 10UMAX |
More Detail: | Boost, Flyback, SEPIC Regulator Positive, Isolatio... |
DataSheet: | ![]() |
Quantity: | 5000 |
1 +: | $ 0.60000 |
10 +: | $ 0.58200 |
100 +: | $ 0.57000 |
1000 +: | $ 0.55800 |
10000 +: | $ 0.54000 |
Frequency - Switching: | 100kHz ~ 500kHz |
Base Part Number: | MAX668 |
Supplier Device Package: | 10-uMAX |
Package / Case: | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) |
Operating Temperature: | -40°C ~ 85°C (TA) |
Control Features: | Enable, Frequency Control |
Serial Interfaces: | -- |
Clock Sync: | Yes |
Synchronous Rectifier: | No |
Duty Cycle (Max): | 90% |
Series: | -- |
Voltage - Supply (Vcc/Vdd): | 3 V ~ 28 V |
Output Phases: | 1 |
Number of Outputs: | 1 |
Topology: | Boost, Flyback, SEPIC |
Output Configuration: | Positive, Isolation Capable |
Function: | Step-Up, Step-Up/Step-Down |
Output Type: | Transistor Driver |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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MAX668EUB+T Application Field and Working Principle
MAX668EUB+T belongs to the category of PMIC -- Voltage Regulators -- DC DC Switching Controllers. It’s a monolithic controller with dual power MOSFETs, and featuring overvoltage/undervoltage protection, current limiting, and thermal protection, etc. It provides a high-performance, cost-effective solution for a wide range of applications.
Applications
MAX668EUB+T is suitably used in a wide range of applications such as non-isolated synchronous buck converters, secondary side active clamps, bias supply sequencers, and PWM and DCM high current control loops. It is especially used when the output voltage is lower than the source voltage. For instance, it is used as a post-regulation module to achieve high-precision output voltage regulation without high-side power MOSFETs in VRM. Furthermore, it is also applied in server and other system platform which requires stringent transient response and tight line/load regulation.
Working principle
MAX668EUB+T operates in one switching mode and compliant with the conventional voltage-mode control architecture. Under this kind of architecture, it monitors and controls the inductor current which is provided by a sense resistor. The sensed inductor current and a reference voltage are compared with the comparator in the IC. Based on the comparison result, it adapts its duty ratio to form a closed-loop control so as to achieve stable and fast transient response with small output voltage ripple.
Apart from providing accurate power delivery, MAX668EUB+T also has many outstanding protection features. It has built-in undervoltage and overvoltage protection as well as current-limit and thermal protection, which greatly enhances the safety of application environment. On the other hand, the existing logic input pins enable autonomous operation in the form of on-off or PWM control.
Conclusion
In conclusion, MAX668EUB+T MMIC functions as a synchronous buck controller which provides a high-performance and cost-effective solution for various applications such as VRM post-regulation, secondary side active clamps, PWM and DCM high current control loops, etc. With its protection features and accuracy advantages, MAX668EUB+T is suitable to be used in various operating environment.
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