ADP8861 Analog Devices, ADP8861 Datasheet - Page 7
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ADP8861
Manufacturer Part Number
ADP8861
Description
Charge Pump, 7-Channel Smart LED Driver with I2C Interface
Manufacturer
Analog Devices
Datasheet
1.ADP8861.pdf
(40 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADP8861ACPZ-R7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
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
)
)