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| 品牌：maxim | 产地：本地 | | 价格：8.00人民币/20000 | 规格：完善 | 简要说明： maxim牌的MAX1705EEE+ 升压型DC-DC转换器IC 原装正品产品：估价：8.00，规格：完善，产品系列编号：齐全 | |  | | | 详细介绍：
1至3节电池、大电流、低噪声、升压型DC-DC转换器，带有线性稳压器
低噪声、双输出转换器，为蜂窝电话中的PA、无线基带和逻辑电路供电
概述
The MAX1705/MAX1706 are high-efficiency, low-noise, step-up DC-DC converters with an auxiliary linear-regulator output. These devices are intended for use in battery-powered wireless applications. They use a synchronous rectifier pulse-width-modulation (PWM) boost topology to generate 2.5V to 5.5V outputs from battery inputs, such as 1 to 3 NiCd/NiMH cells or 1 Li-Ion cell. The MAX1705 has an internal 1A n-channel MOSFET switch. The MAX1706 has a 0.5A switch. Both devices also have a built-in low-dropout linear regulator that delivers up to 200mA.
With an internal synchronous rectifier, the MAX1705/MAX1706 deliver 5% better efficiency than similar non-synchronous converters. They also feature a pulse-frequency-modulation (PFM) standby mode to improve efficiency at light loads, and a 1μA shutdown mode. An efficiency-enhancing track mode reduces the step-up DC-DC converter output to 300mV above the linear-regulator output.
Both devices come in a 16-pin QSOP package, which occupies the same space as an 8-pin SO. Other features include two shutdown-control inputs for push-on/push-off control, and an uncommitted comparator for use as a voltage monitor.
关键特性
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Up to 96% Efficiency
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1.1VIN Guaranteed Startup
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Up to 850mA Output (MAX1705)
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Step-Up Output (2.5V to 5.5V Adjustable)
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Linear Regulator (1.25V to 5.0V Adjustable)
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PWM/PFM Synchronous-Rectified Topology
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300kHz PWM Mode or Synchronizable
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1μA Shutdown Mode
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Voltage Monitor
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Pushbutton On/Off Control
应用/使用
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数字无绳电话
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手持式仪表(PDA、掌上电脑)
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掌上电脑
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PCS电话
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个人通信装置
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双向寻呼
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无线手机
在线订购：http://www.lanxinwgsc.cn/products-detail.php?ProId=564
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