MAX8576EUB+T Allicdata Electronics

MAX8576EUB+T Integrated Circuits (ICs)

Allicdata Part #:

MAX8576EUB+TR-ND

Manufacturer Part#:

MAX8576EUB+T

Price: $ 1.44
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 datasheetMAX8576EUB+T Datasheet/PDF
Quantity: 1000
1 +: $ 1.44000
10 +: $ 1.39680
100 +: $ 1.36800
1000 +: $ 1.33920
10000 +: $ 1.29600
Stock 1000Can Ship Immediately
$ 1.44
Specifications
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) 
Description

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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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