ADP8861 Analog Devices, ADP8861 Datasheet - Page 7

• 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

TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6 V, SCL = 2.7 V, SDA = 2.7 V, nRST = 2.7 V, V
T
A
= 25°C, unless otherwise noted.
0.001
0.01
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.1
10
0
0
1.5
1.5
1
0
I
Figure 6. Typical Quiescent Current, G = 2×, I
OUT
Figure 5. Typical Quiescent Current, G = 1×
= NO LOAD
2.0
2.0
1
Figure 7. Typical Standby I
2.5
2.5
2
3.0
3.0
V
V
V
IN
IN
3.5
3.5
IN
3
(V)
(V)
(V)
4.0
4.0
Q
vs. V
4
I
4.5
4.5
OUT
SCL = SDA = 0V
nRST = 2.7V
IN
Q(ACTIVE)
= NO LOAD
5
–40°C
+25°C
+85°C
+105°C
–40°C
+25°C
+85°C
+105°C
5.0
5.0
–40°C
+25°C
+85°C
+105°C
D1:D7
5.5
5.5
6
= 0.4 V, C
Rev. A | Page 7 of 40
IN
= 1 μF, Capacitor C1 = 1 μF, Capacitor C2 = 1 μF, C
Figure 10. Typical Diode Matching vs. Current Sink Headroom Voltage (V
Figure 8. Typical Diode Current vs. Current Sink Headroom Voltage (V
35
30
25
20
15
10
35
34
33
32
31
30
29
28
27
26
25
6
5
4
3
2
1
0
5
0
0.2
2.0
0
V
I
V
D1:D7
IN
D1:D7
0.2
= 3.6V
0.4
–40°C
+25°C
+85°C
+105°C
= 30mA
2.5
= 0.4V
Figure 9. Typical Diode Current vs. V
0.4
0.6
3.0
0.6
0.8
0.8
3.5
1.0
V
V
V
HR
HR
1.0
IN
(V)
(V)
(V)
1.2
4.0
1.2
1.4
1.4
4.5
V
I
1.6
D1:D7
IN
1.6
IN
= 3.6V
OUT
5.0
ADP8861
= 30mA
1.8
1.8
= 1 μF,
D1
D2
D3
D4
D5
D6
D7
D1
D2
D3
D4
D5
D6
D7
2.0
5.5
2.0
HR
HR
)
)