| Allicdata Part #: | MAX653ESA+-ND |
| Manufacturer Part#: |
MAX653ESA+ |
| Price: | $ 1.38 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Maxim Integrated |
| Short Description: | IC REG BUCK ADJ/3V 225MA 8SOIC |
| More Detail: | Buck Switching Regulator IC Positive Adjustable (F... |
| DataSheet: |  MAX653ESA+ Datasheet/PDF |
| Quantity: | 1000 |
| 200 +: | $ 1.25370 |
Specifications
| Voltage - Output (Min/Fixed): | 1.3V (3V) |
| Base Part Number: | MAX653 |
| Supplier Device Package: | 8-SOIC |
| Package / Case: | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -40°C ~ 85°C (TA) |
| Synchronous Rectifier: | No |
| Frequency - Switching: | -- |
| Current - Output: | 225mA |
| Voltage - Output (Max): | 11.5V |
| Series: | -- |
| Voltage - Input (Max): | 11.5V |
| Voltage - Input (Min): | 4V |
| Number of Outputs: | 1 |
| Output Type: | Adjustable (Fixed) |
| Topology: | Buck |
| Output Configuration: | Positive |
| Function: | Step-Down |
| Part Status: | Active |
| Packaging: | Tube |
Description
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MAX653ESA+ Application Field and Working Principle
The MAX653ESA+ is an integrated switching regulator from Maxim Integrated Semiconductor. It is an advanced hybrid current-mode step-up converter with an internal synchronous P-channel MOSFET and an easy-to-use integrated solution. With its 3A maximum output current, the MAX653ESA+ has a wide range of applications, including high-power LED, USB port power supply, solar cell applications, battery-powered portable electronic products, and high-efficiency power supplies. As a member of Maxim\'s PMIC - Voltage Regulators - DC DC Switching Regulators family, the MAX653ESA+ offers high switching frequency and low residual ripple voltage, greatly reducing the need for large external components and reducing the power supply size. This article will discuss the application fields and working principle of the MAX653ESA+.
Application Field
The MAX653ESA+ is an advanced hybrid current-mode step-up converter designed to offer high efficiency and low external parts count in a wide variety of applications. Its output current can be delivered up to 3A, supporting wide range of load voltage, ranging from 6V to 30V. In addition, thanks to its high switching frequency (up to 2.2 MHz), the MAX653ESA+ reduces external components size and allows designers to use even the smallest components. Due to its ultra-low input voltage operation and wide operating temperature range (from -40°C to +85°C), the MAX653ESA+ is suitable for a wide range of applications, such as USB port power supply, high-power LED applications, solar cell applications, and battery-powered portable electronic products.
Moreover, the MAX653ESA+ integrates internal soft-start, adjustable over-voltage protection, current limit, and thermal limit, providing maximum performance and thermal protection. As a result, the regulator\'s power efficiency can hit up to 95%. Furthermore, the packages available for the MAX653ESA+ make it highly suitable for space-limited applications as well. The MAX653ESA+ currently comes in 8-pin SOIC and 10-pin TDFN packages.
Working Principle
The MAX653ESA+ is a current-mode step-up DC-DC switching regulator. It drives an N-channel MOSFET in a synchronous buck configuration, delivering current at up to 3A. The switching frequency is adjustable up to 2.2 MHz, allowing the designer to pick the best frequency given the size of the external components being used. During operation, the MAX653ESA+ uses a standard input voltage of 4.5V to 30V and outputs adjustable regulated voltages up to 30V.
The regulator starts conversion by switching the N-channel MOSFET on, providing energy to the external inductor. The current then flows through the inductor and C-OP capacitor, charging the capacitor until the voltage across the C-OP reaches the external reference voltage.The regulator then turns off the MOSFET, causing the current to flow from the inductor to the output capacitor, allowing the voltage on the output capacitor to rise. This process is repeated, driving a low-ripple output waveform. The regulator then controls the peak inductor current to ensure the output voltage remains regulated.
The MAX653ESA+ also integrates an over-voltage protection (OVP) circuit, which will clamp the output voltage when it exceeds a set point, protecting the device from an overvoltage event. It also features current-limit, thermally-limit and soft-start functions, greatly increasing the efficiency and reliability of the device.
Conclusion
The MAX653ESA+ is an advanced hybrid current-mode step-up converter with an internal synchronous P-channel MOSFET and an easy-to-use integrated solution. With its 3A maximum output current, the MAX653ESA+ is suitable for a wide range of applications, ranging from USB port power supplies to solar cell applications. The MAX653ESA+ integrates internal soft-start, adjustable over-voltage protection, current limit, and thermal limit functions, providing maximum performance and thermal protection. Furthermore, its high switching frequency, low residual ripple voltage, and two compact packages make the MAX653ESA+ an ideal choice for high-efficiency power supplies in space-limited applications.
The specific data is subject to PDF, and the above content is for reference
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