MAX8576EUB+T Integrated Circuits (ICs) |
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Allicdata Part #: | MAX8576EUB+TR-ND |
Manufacturer Part#: |
MAX8576EUB+T |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Maxim Integrated |
Short Description: | IC REG CTRLR BUCK 10UMAX |
More Detail: | Buck Regulator Positive Output Step-Down DC-DC Co... |
DataSheet: | MAX8576EUB+T Datasheet/PDF |
Quantity: | 1000 |
Frequency - Switching: | 200kHz ~ 500kHz |
Base Part Number: | MAX8576 |
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: | Current Limit, Soft Start |
Serial Interfaces: | -- |
Clock Sync: | No |
Synchronous Rectifier: | Yes |
Duty Cycle (Max): | -- |
Series: | -- |
Voltage - Supply (Vcc/Vdd): | 3 V ~ 28 V |
Output Phases: | 1 |
Number of Outputs: | 1 |
Topology: | Buck |
Output Configuration: | Positive |
Function: | Step-Down |
Output Type: | Transistor Driver |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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PMIC - Voltage Regulators - DC DC Switching Controllers
The MAX8576EUB+T is a synchronous switching regulator designed to enable a wide range of power management solutions in handheld battery-powered or line powered applications. This product a is versatile, high-efficiency, high frequency, low-power device intended for use in cell phones, smart phones, and other portable applications.
MAX8576EUB+T Application Field
The MAX8576EUB+T provides excellent power conversion solutions for applications where low noise, low RDS(on), high efficiency, and high operating temperature are required. It is well suited for both battery-powered and line powered designs.
- Cellphones
- Smartphones
- Portable medical instruments
- Portable gaming and computing devices
- Portable consumer electronics
Features
The features of the MAX8576EUB+T are designed to optimize performance and efficiency. It supports both fixed-frequency and spread-spectrum-modulated switching, offering significantly improved ripple and EMI performance compared to traditional fixed-frequency mode. The Pulse-Frequency-Modulated (PFM) mode allows for a very low quiescent current consumption. The PFM mode also provides improved thermal performance.
- Maximum switch current: 4 A
- Programmable output voltage: 0.6 V to 5.5 V
- Fixed-frequency or spread-spectrum modulation operation
- High efficiency (up to 96%): ±1% feedback accuracy
- Integrated low-sidesynchronous MOSFET
- Dual-phase operation
- Up to 1 MHz frequency
- Open-loop local compensation
- Very low quiescent current in PFM mode
- Cycle-by-cycle current limit
- Adaptive on-time scaling
- Programmable soft-start
- Thermal shutdown
MAX8576EUB+T Working Principle
The MAX8576EUB+T is a synchronous switching regulator that uses a high-frequency step-down topology. It is designed to produce low-ripple outputs with high efficiency and minimum switching loss. The "synchronous" refers to the fact that the topology employs at least one high-side and one low-side switching MOSFET transistor (as opposed to "asychronous" which only uses one transistor).
The MAX8576EUB+T is an adjustable, fixed-frequency, peak-current-mode control device. The output voltage is controlled by varying the peak size of the switch current waveform, which is determined by the buck controller. A separate voltage control loop is included to regulate the output voltage. The current and voltage loop control outputs are summed, and the result is used to generate the high-side drive current.
The MAX8576EUB+T device contains a low-side MOSFET driver and an overcurrent and thermal protection circuit. The overcurrent protection circuit monitors the peak switch current and shuts off the switching devices for current levels above a predetermined limit.
The switching frequency of the MAX8576EUB+T is adjustable. It can be set using an external resistor or programmed using a digital pulse-width modulation (PWM) signal. The frequency is then locked in to minimize the output ripple and provide excellent line and load regulation.
The MAX8576EUB+T also features soft-start, which gradually ramps up the output voltage at the start of each switching cycle. This helps prevent large in-rush current spikes and reduces output voltage overshoot.
The specific data is subject to PDF, and the above content is for reference
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