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主要特征
应用/用途
简化框图
Technical Docs
| 数据资料 | 低噪声、升压型DC-DC转换器 | Sep 21, 2005 | |
| 应用笔记 | All-Ceramic 200mA Step-Up Converter for USB |
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后，所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站，请创建一个新帐户。有关此样片网站的任何问题，请联系SampleSupport@analog.com。
主要特征
- 90% Efficiency
- Adjustable Output from VIN to 12V
- 1.6A, 0.21Ω, 14V Power MOSFET (MAX1790)
- 2.4A, 0.15Ω, 14V Power MOSFET (MAX8715)
- +2.6V to +5.5V Input Range
- Pin-Selectable 640kHz or 1.2MHz Switching Frequency
- 0.1µA Shutdown Current
- Programmable Soft-Start
- Small 8-Pin µMAX Package
应用/用途
- 手持式设备
- LCD显示器
- PCMCIA卡
- 便携式应用
描述
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.
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.
Technical Docs
| 数据资料 | 低噪声、升压型DC-DC转换器 | Sep 21, 2005 | |
| 应用笔记 | All-Ceramic 200mA Step-Up Converter for USB |
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后，所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站，请创建一个新帐户。有关此样片网站的任何问题，请联系SampleSupport@analog.com。
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