MAX1790, MAX8715 低噪聲、升壓型DC-DC轉(zhuǎn)
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MAX1790, MAX8715 pdf datasheet
MAX1790, MAX8715 概述
The MAX1790/MAX8715 boost converters incorporate high-performance (at 1.2MHz), current-mode, fixed-frequency, pulse-width modulation (PWM) circuitry with a built-in 0.21Ω /0.15Ω n-channel MOSFET to provide a highly efficient regulator with fast response.
High switching frequency (640kHz or 1.2MHz selectable) allows easy filtering and faster loop performance. An external compensation pin provides the user flexibility in determining loop dynamics, allowing the use of small, low equivalent-series-resistance (ESR) ceramic output capacitors. The device can produce an output voltage as high as 12V from an input as low as 2.6V.
Soft-start is programmed with an external capacitor, which sets the input-current ramp rate. In shutdown mode, current consumption is reduced to 0.1μA. The MAX1790/ MAX8715 are available in a space-saving 8-pin μMAX? package. The ultra-small package and high switching frequency allow the total solution to be less than 1.1mm high.
μMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX1790, MAX8715 關(guān)鍵特性
MAX1790, MAX8715 應(yīng)用/使用
| 手持式設(shè)備 | |
| LCD顯示器 | |
| PCMCIA卡 | |
| 便攜式應(yīng)用 |
MAX1790,MAX8715應(yīng)用電路
典型工作電路
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