4 路充电泵白光 LED 驱动器
The CAT3604A is a charge pump operating in either 1x LDO mode or 1.5x fractional mode regulating current through each of the 4 LED pins. Operation at a fixed high frequency of 1 MHz typical allows the use of very small value ceramic capacitors.The CAT3604A drives white light-emitting diodes LEDs connected in parallel and provides tightly matched regulated current to achieve uniformity of brightness in LCD backlighting applications. An external resistor R controls the output current level. LED currents of up to 30 mA are supported over a range of input supply voltages from 3 V to 5.5 V, making the device ideal for battery-powered applications.LED dimming can be accomplished by several methods including using a DC voltage to set the RSET pin current, applying a PWM signal on the Control signals, or adding a switched resistor in parallel with RSET. The Enable input pin allows the device to be placed in power-down mode with ""zero"" quiescent current.The CAT3604A features short circuit and overcurrent limiting protection. The device is available in a 16-pad TQFN package with a max height of 0.8 mm.
Features
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频率 1 MHz
无卤素状态 Halogen Free
输出接口数 4
输入电压DC 3.00V ~ 5.50V
输出电压 6 V
输出电流 30 mA
开关频率 1 MHz
拓扑结构 Charge Pump
输入电压Max 5.5 V
输入电压Min 3 V
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 3V ~ 5.5V
安装方式 Surface Mount
引脚数 16
封装 TQFN-16
长度 4.1 mm
宽度 4.1 mm
高度 0.8 mm
封装 TQFN-16
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
制造应用 背光, Color LCD and Keypad Backlighting
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/12/17