KK1503 Datasheet, PDF (1/2 Pages) KODENSHI KOREA CORP. – CMOS LSI LEDs driver circuit

TECHNICAL DATA
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
KK1503
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
V_DD - V_SS
V_IN
T_a
T_stg
Value
Unit
- 0.3 ~ + 5.0
V
V_SS - 0.2 ~ V_DD + 0.2
V
- 10 ~ + 60
o_C
- 55 ~ + 125
o_C
ELECTRICAL CHARACTERISTICS
(Ta = 25^oC; V_DD = 3.0V; V_SS = 0V unless otherwise specified)
Characteristic
Symbol
Test Condition
Min
Operating Voltage
Standby
V_DD
I_DD1
No Playing
Open
2.4
P
Current Consumption
I_DD2
Playing
Q1, Q2 Open
Input Current (P)
I_IL
V_IL = 0.8V
I_IH
V_IH = 3.0V
Output Current
(Q1, Q2)
I_OL
V_OL = 0.5V
6
Oscillating Frequency
F_OSC
54
Oscillating Start Voltage
V_STR
2.4
Typ
Max
Unit
3.0
3.6
V
0.1
2.5
µA
50
100
µA
10
50
µA
0.5
1
µA
10
mA
76.8
100
KHz
V
TIMING DIAGRAM
T = One Duration
1