器件名称: YKW-06
功能描述: Step-down Switching Controller
文件大小: 183.31KB 共5页
简 介:YKW-06
Preliminary release Rev. 0.30]
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20060118^
YKW-06
Step-down Switching Controller
GENERAL DESCRIPTION
The YKW-06 is a step-down DC-DC converter. It could drivers an external power transistor using the PWM control. The IC incorporates the soft-start function with a proper capacitor connected between SS and ground pins. The soft-start function could ensure the PWM output pulse width starts from 0% duty cycle. The output voltage is controlled by the external sense resistor and FB pin. The output voltage are also adjustable by the external variable resistor connected through SS and BRT pins. Through changing this external resistor value, could tune the output current and voltage. It also has the over voltage detection function with debounce-timer check to prevent from the over voltage damage.
FEATURES
Operation voltage range : 2.4V ~ 6.0V Adjustable output voltage Built-in oscillator Soft start function Over voltage protection with the debounce-timer check. 8-pin DIP/MSOP/SOP packages
APPLICATIONS
White LED lighting controllers Step-down DC-DC converters Portable equipment
PIN CONFIGURATION
OUT SS OVP GND 1 2 3 4 8 7 6 5 VDD COMP BRT FB
PIN DESCRIPTION
Pin No. 1 2 3 4 5 6 7 8 sì ¤u Pin Name OUT SS OVP GND FB BRT COMP VDD ~é°¤u I/O O B I P I I O P Description PWM output (High : PWM on period) Soft-start timing Setting with external capacitor Over voltage protection and Disable function Ground Output voltage feedback sense, error amplifier(-) input Output cu……
