S-8813 Datasheet, PDF (24/29 Pages) Seiko Instruments Inc – 3-CHANNEL WHITE LED DRIVER IC (CHARGE PUMP IC WITH BUILT-IN CONSTANT-CURRENT CIRCUIT)

3-CHANNEL WHITE LED DRIVER IC (CHARGE PUMP IC WITH BUILT-IN CONSTANT-CURRENT CIRCUIT)
S-8813 Series
Rev.2.1_00
 Transient Response Characteristics Examples
1. Power-Off Pin Response
Input Voltage
[3 V / div]
3.0 V
0V
IOUT
Pin Voltage
[1 V / div]
V_IN = 3.0 V
V_IOUT
I_OUT
Output Current
[10 mA / div]
t [500 μs / div]
3. Power Supply Voltage Transition
V_IOUT = 3.5 V
Input Voltage
[1.5 V / div]
4.5 V
3.0 V
Output Current
[5 mA / div]
2. Power Supply Application
Input Voltage
[3 V / div]
3.0 V
0V
IOUT
Pin Voltage
[1 V / div]
V_IN = 3.0 V
V_IOUT
I_OUT
Output Current
[10 mA / div]
t [500 μs / div]
4. Power Supply Voltage Transition
Input Voltage
[1.5 V / div]
4.5 V
3.0 V
V_IOUT = 3.5 V
Output Current
[5 mA / div]
5. Current Setting Switching
t [200 μs / div]
R₁
[5 kΩ / div]
10 kΩ
5.1 kΩ
V_IOUT = 3.5 V
Output Current
[5 mA / div]
t [200 μs / div]
6. Current Setting Switching
V_IOUT = 3.5 V
R₁
[5 kΩ / div]
10 kΩ
5.1 kΩ
Output Current
[5 mA / div]
t [200 μs / div]
7. Ripple Characteristics (COUT 10 μF)
3.50
IOUT=10 mA/ch, VIN = 4.5 V
0.015
3.40
3.30
0.013
IOUT
0.011
3.20
3.10
VIOUT
0.009
0.007
3.00
0.005
t [20 μs / div ]
t [200 μs / div]
8. Ripple Characteristics (COUT 4.7 μF)
3.50
3.40
3.30
3.20
3.10
3.00
IOUT = 10 mA/ch, VIN = 4.5 V _0.015
0.013
IOUT
0.011
VIOUT
0.009
0.007
t [20 μs / div]
0.005
24
Seiko Instruments Inc.