ADP8860 Analog Devices, ADP8860 Datasheet - Page 10

• 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

ADP8860
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
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
Figure 19. Typical Overvoltage Protection (OVP) Threshold
–40
–40
2.5
Figure 18. Typical Regulated Output Voltage (V
V
GAIN = 2×
I
OUT
IN
= 3V
= 10mA
3.0
Figure 17. Typical ALS Current, I
–10
–10
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
OVP THRESHOLD
3.5
20
20
V
IN
4.0
(V)
50
50
4.5
OVP RECOVERY
ALS
80
80
5.0
OUT(REG)
–40°C
+25°C
+85°C
+105°C
)
110
110
5.5
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0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
2.5
2.5
1
2
3
C
V
I
OUT
IN
IN
I
I
I
I
OUT
OUT
OUT
OUT
Figure 22. Typical Operating Waveforms, G = 1×
= 3.6V
= 1µF, C
= 120mA
3.0
3.0
Figure 21. Typical Efficiency (High Vf Diode)
Figure 20. Typical Efficiency (Low Vf Diode)
= 140mA, Vf = 3.1V
= 210mA, Vf = 3.2V
= 140mA, Vf = 3.85V
= 210mA, Vf = 4.25V
OUT
V
V
3.5
3.5
OUT
I
IN
= 1µF, C1 = 1µF, C2 = 1µF
IN
(AC-COUPLED) 10mA/DIV
(AC-COUPLED) 50mV/DIV
(AC-COUPLED) 50mV/DIV
V
V
IN
IN
4.0
4.0
(V)
(V)
T
4.5
4.5
5.0
5.0
500ns/DIV
5.5
5.5
450
400
350
300
250
200
150
100
50
0
450
400
350
300
250
200
150
100
50
0