KK1503

TECHNICAL DATA KK1503 FEATURES • Single 3V battery operation • Low stand-by current • No external R-C component required for oscillation • Direct drive LEDs (open-drain output) FUNCTIONS • One shot mode • Flash Rate 4,7 Hz • Duty Cycle 1/4 • Flash Duration 4.3 sec • Alternative outputs DESCRIPTION The KK1503 is a CMOS LSI LEDs driver circuit. An automatic cut off function is built in to lower the current consumption. The metal mask can be modified in order to adjust the flashing rate, the duty cycle and the time of flash to a particular value. Besides, two output LEDs can be flashed in phase or alternative by mask selection. ABSOLUTE MAXIMUM RATINGS Characteristic Supply Voltage Input Voltage Operating Temperature Storage Temperature Symbol VDD - VSS VIN Ta Tstg Value - 0.3 ~ + 5.0 VSS - 0.2 ~ VDD + 0.2 - 10 ~ + 60 - 55 ~ + 125 Unit V V o o C C ELECTRICAL CHARACTERISTICS (Ta = 25oC; VDD = 3.0V; VSS = 0V unless otherwise specified) Characteristic Operating Voltage Standby Current Consumption Symbol VDD IDD1 IDD2 No Playing Open Playing Q1, Q2 Open Input Current (P) IIL IIH Output Current Oscillating Frequency Oscillating Start Voltage (Q1, Q2) IOL FOSC VSTR VIL = 0.8V VIH = 3.0V VOL = 0.5V 6 54 2.4 10 0.5 10 76.8 100 50 1 µA µA mA KHz V 50 100 µA P Test Condition Min 2.4 Typ 3.0 0.1 Max 3.6 2.5 Unit V µA TIMING DIAGRAM T = One Duration 1 KK1503 TYPICAL APPLICATION CIRCUIT 1. Connect the circuit as Fig.2 When the switch SW1 is pressed, the level mode I is selected and the LEDs will flash as in Fig.1 Q1 Fig.2 Press Switch SW1 to play ones. P Q2 SW1 V DD VSS + - PAD LAYOUT 7 6 Y 5 4 3 (0,0) X 8 9 KK1503 P DIAGR AD AM Chip size: 1350 x 900 P d size : 100 x 100 a U it n : µm 2 1 PAD LOCATION No. 1 2 3 4 5 Pad Name VSS Not Connected P T1 OSCI X 543 543 543 543 543 Y -311 -151 4 164 324 No . 6 7 8 9 ( Unit: µm) Pad Name OSCO Q1 Q2 VDD X -275 -531 -531 -531 Y 320 320 -148 -311 NOTE: The substrate is connected to VDD. 2