ADP8861 Analog Devices, ADP8861 Datasheet - Page 9
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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
90
80
70
60
50
40
30
20
10
0
2.5
5.5
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
6.0
5.8
5.6
5.4
5.2
Figure 18. Typical Overvoltage Protection (OVP) Threshold
–40
–40
Figure 17. Typical Regulated Output Voltage (V
V
GAIN = 2×
I
I
I
OUT
OUT
OUT
IN
3.0
= 3V
Figure 19. Typical Efficiency (Low Vf Diode)
= 10mA
= 140mA, Vf = 3.1V
= 210mA, Vf = 3.2V
–10
–10
3.5
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
OVP THRESHOLD
V
20
20
IN
4.0
(V)
4.5
50
50
OVP RECOVERY
5.0
80
80
OUT(REG)
5.5
)
450
400
350
300
250
200
150
100
50
0
110
110
Rev. A | Page 9 of 40
100
90
80
70
60
50
40
30
20
10
0
2.5
1
2
3
1
2
3
C
V
I
C
V
I
OUT
OUT
IN
IN
IN
IN
I
I
Figure 22. Typical Operating Waveforms, G = 1.5×
OUT
OUT
Figure 21. Typical Operating Waveforms, G = 1×
= 3.0V
= 1µF, C
= 3.6V
= 1µF, C
3.0
= 120mA
= 120mA
Figure 20. Typical Efficiency (High Vf Diode)
= 140mA, Vf = 3.85V
= 210mA, Vf = 4.25V
OUT
OUT
V
V
V
V
3.5
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
V
IN
4.0
(V)
T
T
4.5
5.0
500ns/DIV
500ns/DIV
ADP8861
5.5
450
400
350
300
250
200
150
100
50
0