ADP8860 Analog Devices, ADP8860 Datasheet - Page 7

• Manufacturer Part Number: ADP8860
• Description: Charge Pump, 7-Channel Smart LED Driver with I2C Interface
• Manufacturer: Analog Devices

Specifications of ADP8860

• Vin Range: 2.4V to 5.5V
• Vout (v): 4.3 to 5.5
• Synchronous: No
• Package: 20-Lead WLCSP
• Led Configuration: Parallel
• Topology: Capacitive
• I2c Support: Yes
• Max Iout (ma): 60mA
• Brightness Control: I2C
• Peak Efficiency (%): 89%
• Switching Frequency: 1MHz

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Table 4. Pin Function Descriptions
LFCSP
14
3
2
1
20
19
17
16
18
13
11
9
12
10
15
8
6
5
7
4
Pin No.
WLCSP
A3
D3
E3
E4
D4
C4
B4
B3
C3
A2
A1
C1
B1
B2
A4
D1
D2
E1
C2
E2
NOTES
1. CONNECT THE EXPOSED PADDLE
nRST
SCL
TO GND1 AND/OR GND2.
D3
D2
D1
Figure 3. LFCSP Pin Configuration
Mnemonic
VIN
D1
D2
D3
D4
D5
D6/CMP_IN2
D7
CMP_IN
VOUT
C1+
C1−
C2+
C2−
GND1
GND2
nINT
nRST
SDA
SCL
1
2
3
4
5
(Not to Scale)
ADP8860
TOP VIEW
PIN 1
INDICATOR
Description
Input Voltage 2.5 V to 5.5 V.
LED Sink 1.
LED Sink 2.
LED Sink 3.
LED Sink 4.
LED Sink 5.
LED Sink 6/Comparator Input for Second Phototransistor. When using this pin as a second
phototransistor input, a capacitor (0.1 μF recommended) must be connected from this pin to ground.
LED Sink 7.
Comparator Input for Phototransistor. When using this function, a capacitor (0.1 μF recommended) must
be connected from this pin to ground.
Charge Pump Output.
Charge Pump C1+.
Charge Pump C1−.
Charge Pump C2+.
Charge Pump C2−.
Ground. Connect the exposed pad to GND1 and/or GND2.
Ground. Connect the exposed pad to GND1 and/or GND2.
Processor Interrupt (Active Low). Requires an external pull-up resistor. If this pin is not used, it can be left
floating.
Hardware Reset (Active Low). This bit resets the device to the default conditions. If not used, this pin
must be tied above V
I
I
2
2
C Serial Data. Requires an external pull-up resistor.
C Clock. Requires an external pull-up resistor.
15 GND1
14 VIN
13 VOUT
12 C2+
11 C1+
IH(MIN)
.
Rev. 0 | Page 7 of 52
A
D
E
B
C
Figure 4. WLCSP Pin Configuration
GND2
nRST
C1–
C1+
C2+
1
(BALL SIDE DOWN)
VOUT
ADP8860
SDA
nINT
Not to Scale
SCL
C2–
TOP VIEW
2
CMP_IN
VIN
D1
D2
D7
3
CMP_IN2
GND1
D6/
D5
D4
D3
4
ADP8860