GMT致新 G2548KB1U TQFN3.5X3.5-20 带PWM接口的笔记本WLED驱动和I2C控制

　　General Description

　　The G2548/A/B/C is a high efficiency driver for

　　whites LEDs. It is suitable for single/two cell battery

　　input to drive LED light bars which contains six

　　strings in parallel and up to 12 WLEDs per string.

　　The internal current sinks support a maximum of

　　2% current mismatching for excellent brightness

　　uniformity in each string of LEDs. To provide

　　enough headroom for current sink operation, the

　　boost controller monitors the minimum voltage of

　　the feedback pins and regulates an optimized

　　output voltage for power efficiency.

　　The G2548/A/B/C has a wide input voltage operating

　　range from 4.2V to 24V and contains I2C interface for

　　controlling the dimming mode, operating frequency

　　and the LED current. The internal 250m, 37V power

　　switch with current control provides over current

　　protection. The switching frequency of the

　　G2548/A/B/C is also adjustable from 100kHz to

　　1.6MHz, which allows flexibility between efficiency

　　and component size.

　　The G2548/A/B/C are available in the

　　TQFN3.5X3.5-20 or TQFN3X3-24 package.