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        Dual 1A 1.5MHz同步降壓轉換器--AT7172

        亚投彩神分類: 穩壓管 LDO
          The AT7172 is a dual high-efficiency Pulse-Width Modulated(PWM) step-down DC-DC converter. It is capable of delivering 1A output current over a wide input voltage range from 2.6V to 5.5V, the AT7172 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and other handheld devices.
          訂購熱線:400-788-7770
          3A降壓轉換調節器--AT2596
          3A降壓轉換調節器--AT2596
          The AT2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator capable of driving a 3A load with excellent line and load regulation. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation,and a fixed-frequency oscillator. A standard series
          150mA低噪音/ 高PSRR雙ldo監管器--AT2261
          150mA低噪音/ 高PSRR雙ldo監管器--AT2261
          The AT2261 series are dual voltage regulator ICs with high output voltage accuracy, low supply current, low dropout, and high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting output voltage, a current limit circuit, short circuit protection and a chip enable circuit.These ICs perform with low dropo
          降低電壓開關3A調節器--AT2576
          降低電壓開關3A調節器--AT2576
          The AT2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator,functions for a step-down (buck) switching regulator,load regulation. These devices are available in fixed output voltages of 3.3V, 5V and an adjustable Requiring a minimum number of external components, these regulators are simple to use and include i

                       Dual 1A 1.5MHz同步降壓轉換器--AT7172

            一 概述

            The AT7172 is a dual high-efficiency Pulse-Width Modulated(PWM) step-down DC-DC converter. It is capable of delivering 1A output current over a wide input voltage range from 2.6V to 5.5V, the AT7172 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and other handheld devices.
            Two operational modes are available:PWM/Low-Dropout auto-switch and shutdown modes. Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical application.
            The AT7172 enters Low-Dropout mode when normal PWM cannot provide regulated output voltage by continuously turning on the upper PMOS.The AT7172 enter shutdown mode and consumes less than 0.1µA when EN pin is pulled low.
            The switching ripple is easily smoothed-out by small
            package filtering elements due to a fixed operation
            frequency of 1.5MHz.

            二 特性

            2.6V to 5.5V input voltage range
            Output Adjustable from 0.6V to VIN
            280/200m? Internal Power MOSFET Switch
            Stable with Low ESR Output Ceramic
            Capacitors
            Up to 95% Efficiency
            Less than 1µA Shutdown Current
            1.5Mhz Switching Frequency
            Thermal Shutdown Protection
            Current limit and short circuit protections.
            Available in TDFN3x3-10L& TDFN3x3-12L
            Pb-Free Package
            Build-in soft start function

             

            三 應用

            Cellular Telephones
            Wireless and DSL Modems
            Digital Still Cameras
            Mp3 Players
            Portable Instruments
            Microprocessors and DSP Core Supplies

            四 封裝

             

            五 應用電路圖

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            3A降壓轉換調節器--AT2596
            3A降壓轉換調節器--AT2596
            The AT2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator capable of driving a 3A load with excellent line and load regulation. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation,and a fixed-frequency oscillator. A standard series
            150mA低噪音/ 高PSRR雙ldo監管器--AT2261
            150mA低噪音/ 高PSRR雙ldo監管器--AT2261
            The AT2261 series are dual voltage regulator ICs with high output voltage accuracy, low supply current, low dropout, and high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting output voltage, a current limit circuit, short circuit protection and a chip enable circuit.These ICs perform with low dropo
            降低電壓開關3A調節器--AT2576
            降低電壓開關3A調節器--AT2576
            The AT2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator,functions for a step-down (buck) switching regulator,load regulation. These devices are available in fixed output voltages of 3.3V, 5V and an adjustable Requiring a minimum number of external components, these regulators are simple to use and include i
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            郵箱:dgzm699@163.com

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