Elete listed can provide a liquid crystal driver IC voltage LED

The United States listed the linear technology with drive bias supply circuit of the liquid crystal panel driver LED IC "LTC3524" (English released data). Mainly for 3 to 7 inches of small TFT LCD panel. The input voltage range is +2.5 ~ +6.0V, which is mainly used for driving a plurality of alkaline batteries, nickel hydrogen batteries or a single lithium ion rechargeable battery. Working frequency is 1.5MHz. The output voltage range is +3.0 ~ 6.0V. The total current consumption is 200 A. The maximum efficiency of the power supply circuit for LCD panel is 90%. Built in boost converter with synchronous rectifier. LCD panel supply voltage of +6V, the maximum output current of 25mA. In addition, when the power supply voltage of the gate driver circuit is +20V and -20V, the maximum current of the 2mA can be output respectively. It also has the timing function to control the output voltage. LED output to two channels. Can be adjusted through the PWM to maintain the maximum dimming ratio of 200:1 at the same time, can also be up to 10 (up to 5 LED per channel). The maximum efficiency of the LED drive circuit is 78%. Package using 4.0mm * 4.0mm * 0.75mm QFN. Batch purchase 1000, the reference price of 248 yen.

Source: Nikkei BP news agency reported