ADP8861 Analog Devices, ADP8861 Datasheet - Page 20

• Manufacturer Part Number: ADP8861
• Description: Charge Pump, 7-Channel Smart LED Driver with I2C Interface
• Manufacturer: Analog Devices

Specifications of ADP8861

• 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: PWM
• Peak Efficiency (%): 89%
• Switching Frequency: 1.32MHz
• Over Volt Protection (v): 5.8V

ADP8861
EXAMPLE CIRCUITS
CONTROL
SIGNALS
VDDIO
I
2
nRST
C
nINT
V
IN
R1
nRST
nINT
R2
SDA
SCL
VIN
1µF
R3
VDDIO
VDDIO
VDDIO
VDDIO
Figure 41. Application Schematic with Keypad Light Control
R4
C1
Figure 40. Generic Application Schematic
D1
DL1
DISPLAY BACKLIGHT
D1
VIN
GND1
nRST
SDA
SCL
nINT
GND1
D2
DL2
D2
Rev. A | Page 20 of 40
D3
DL3
D3
ADP8861
D4
DL4
D4
D5
ADP8861
SUB-DISPLAY BL
GND2
D6
DL5
ACCESSORY
LIGHTS OR
D5
D7
DL6
D6
DL7
R5
60mA MAX TOTAL CURRENT
UP TO 10 LEDs (6mA EACH)
D7
C1+
C1–
C2+
C2–
KEYPAD LIGHT
DL8
R6
1µF
VOUT
VOUT
GND2
C1
1µF
C2
1µF
C1+
C1–
C2+
C2–
DL17
R15
C3
C4
C2