ADP8863 Analog Devices, ADP8863 Datasheet - Page 10

• Manufacturer Part Number: ADP8863
• Description: Charge Pump, 7-Channel Fun Lighting LED Driver
• Manufacturer: Analog Devices

Specifications of ADP8863

• Vin Range: 2.5 to 5.5V
• Vout (v): 4.3 to 5.5
• Synchronous: No
• Package: 20-Lead LFCSP,20-Lead WLCSP
• Led Configuration: Parallel
• Topology: Capacitive
• I2c Support: Yes
• Max Iout (ma): 60mA
• Brightness Control: I2C
• Peak Efficiency (%): 89%
• Switching Frequency: 1.32MHz
• Over Volt Protection (v): 5V

ADP8863
1
2
3
1
2
3
C
V
I
C
V
I
OUT
OUT
IN
IN
IN
IN
Figure 23. Typical Operating Waveforms, G = 1.5×
Figure 24. Typical Operating Waveforms, G = 2×
= 3.0V
= 2.5V
= 1µF, C
= 1µF, C
= 120mA
= 120mA
OUT
OUT
V
V
V
V
OUT
I
OUT
I
IN
IN
= 1µF, C1 = 1µF, C2 = 1µF
= 1µF, C1 = 1µF, C2 = 1µF
IN
IN
(AC-COUPLED) 10mA/DIV
(AC-COUPLED) 10mA/DIV
(AC-COUPLED) 50mV/DIV
(AC-COUPLED) 50mV/DIV
(AC-COUPLED) 50mV/DIV
(AC-COUPLED) 50mV/DIV
T
T
500ns/DIV
500ns/DIV
Rev. A | Page 10 of 52
2
4
C
C1 = 1µF, C2 = 1µF
V
I
(ONE DIODE AT
MAX CURRENT)
OUT
IN
IN
= 3.7V
= 10pF, C
= 30mA
I
IN
Figure 25. Typical Start-Up Waveform
(10mA/DIV)
OUT
I
OUT
= 1µF
(10mA/DIV)
V
OUT
(1V/DIV)
100µs/DIV