TECHNICAL DATA KK1503 FEATURES FUNCTIONS • Single 3V battery operation • Low stand-by current • No external R-C component required for oscillation • Direct drive LEDs (open-drain output) • 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 Symbol Value Unit VDD - VSS - 0.3 ~ + 5.0 V Input Voltage VIN VSS - 0.2 ~ VDD + 0.2 Operating Temperature Ta - 10 ~ + 60 o C - 55 ~ + 125 o C Supply Voltage Storage Temperature Tstg V ELECTRICAL CHARACTERISTICS (Ta = 25oC; VDD = 3.0V; VSS = 0V unless otherwise specified) Characteristic Symbol Operating Voltage VDD Standby IDD1 Test Condition No Playing Min Typ Max Unit 2.4 3.0 3.6 V 0.1 2.5 µA 50 100 µA 10 50 µA 0.5 1 P Open Current Consumption IDD2 Playing Q1, Q2 Open IIL Input Current (P) Output Current (Q1, Q2) VIL = 0.8V IIH VIH = 3.0V IOL VOL = 0.5V 6 10 76.8 Oscillating Frequency FOSC 54 Oscillating Start Voltage VSTR 2.4 µA mA 100 KHz V 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 VSS V DD + - PAD LAYOUT 7 6 5 Y 4 3 X (0,0) KK1503 PAD DIAGRAM Chip size: 1350 x 900 Pad size : 100 x 100 Unit : µm 8 2 9 1 PAD LOCATION No. ( Unit: µm) Pad Name X Y No. Pad Name X Y 1 VSS 543 -311 6 OSCO -275 320 2 Not Connected 543 -151 7 Q1 -531 320 3 P 543 4 8 Q2 -531 -148 4 T1 543 164 9 VDD -531 -311 5 OSCI 543 324 NOTE: The substrate is connected to VDD. 2