数据手册：MAX1779 业内首款高性能boost调节器，带有双电荷泵稳压器，用于小尺寸电池供电的LCD设备 .pdf [英文Rev.1(PDF,336kB)]
{状况：生产中。}The MAX1779 triple-output DC-DC converter provides highly efficient regulated voltages required by small active matrix, thin-film transistor (TFT) liquid-crystal displays (LCDs). One high-power DC-DC converter and two low-power charge pumps convert the +2.7V to +5.5V input supply voltage into three independent output voltages. The primary high-power DC-DC converter generates a boosted output voltage (VMAIN) up to 13V that is regulated within ±1%. The low-power BiCMOS control circuitry and the low on-resistance (1 ohm) of the integrated power MOSFET allows efficiency up to 91%. The 250kHz current-mode pulse-width modulation (PWM) architecture provides fast transient response and allows the use of ultra-small inductors and ceramic capacitors. The dual charge pumps independently regulate one positive output (VPOS) and one negative output (VNEG). These low-power outputs use external diode and capacitor stages (as many stages as required) to regulate output voltages up to +40V and down to -40V. A proprietary regulation algorithm minimizes output ripple, as well as capacitor sizes for both charge pumps. The MAX1779 is available in the ultra-thin TSSOP package (1.1mm max height).
产品关键特性
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典型工作电路
芯片订购型号
| 订购型号 | 产品状态 | 封装形式 | 工作温度 | RoHS/无铅 |
| MAX1779EUE | 生产中 | TSSOP；16引脚；33.4mm²封装信息 | -40°C至+85°C | RoHS/无铅：否材料分析 |
| MAX1779EUE+ | 生产中 | TSSOP；16引脚；33.4mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1779EUE+T | 生产中 | TSSOP；16引脚；33.4mm²封装信息 | -40°C至+85°C | RoHS/无铅：无铅材料分析 |
| MAX1779EUE-T | 生产中 | TSSOP；16引脚封装信息 | -40°C至+85°C | 参考数据资料 |
功能接近器件
| MAX1664 | 有源点阵液晶显示器(AMLCD)电源 |
| MAX1790 | 低噪声、升压型DC-DC转换器 |
| MAX8715 | 低噪声、升压型DC-DC转换器 |
| MAX1748 | 三输出TFT-LCD DC-DC转换器 |
| MAX8726 | 三输出TFT-LCD DC-DC转换器 |
