AN8353UB

AN8353UB High Efficiency Car Dashboard Dimmer IC s Overview The AN8353UB is a dimmer IC to control illumination of the car dashboard at high efficiency and high performance by pulse width control. It outputs pulses at a duty proprotional to an input voltage. 2.4±0.25 3.3±0.25 6.0±0.3 Unit : mm 8 0.5±0.1 s Features Low power consumption by pulse control External ON/OFF control by the standby pin Pulse frequency range : 50Hz to 10kHz Built-in overvoltage protective circuit approx. 20V Wide operating ambient temperature range : –40˚C to+100˚C All products temperature cycle, high reliability by normal and high temperature checks reliability equivalent to the air bags requested in U.S. 23.3±0.3 7 6 5 4 1.5±0.25 2 1 0.3 – 0.05 + 0.1 3.0±0.3 9-pin SIL Plastic Package (SIP009-P-0000C) s Block Diagram 4 9 Over Voltage Protector PWM Comparator VCC 3 Control Voltage Conversion 1 Triangular Wave Gen. 2 GND 6 5 7 8 1.4±0.3 30˚ 3 1.5±0.25 2.54 9 s Pin Descriptions Pin No. 1 2 3 4 5 Output pin GND Input pin Noise eliminating capacity connection pin 1 Square wave output pin Pin name GND Applies a control voltage. Connect a capacitor to eliminator a noise. Output a triangular wave, which serves as a reference for the PWM signal, to the Pin6 by connecting the resistor RT between the Pins5 and6, and capacity CT between the Pin6 and GND. Output a triangular wave, which serves as a reference for the PWM signal, to this pin by connecting the resistor RT betwe...