ADP8866 Analog Devices, ADP8866 Datasheet - Page 18

• Manufacturer Part Number: ADP8866
• Description: Charge Pump Driven 9-Channel LED Driver with Automated LED Lighting Effects
• Manufacturer: Analog Devices

Specifications of ADP8866

• Vin Range: 2.5 to 5.5V
• Vout (v): 4.3 to 5.5
• Synchronous: No
• Package: 20-Lead LFCSP
• Led Configuration: Parallel
• Topology: Capacitive
• I2c Support: Yes
• Max Iout (ma): 25mA
• Brightness Control: I2C
• Peak Efficiency (%): 92%
• Switching Frequency: 1MHz

ADP8866
VOUT < V
VOUT < V
VOUT > V
VOUT > V
OVP FAULT
OVP FAULT
V
V
OVP
OVP (HYS)
1
1
(HYS)
OVP
OVP
OVP
OVP
–
–
0
0
V
V
OUT
OUT
REGULATE
REGULATE
V
V
VOUT TO
VOUT TO
TRY TO
TRY TO
OUT(REG)
OUT(REG)
1
> V
> V
1
OUT(REG)
OUT(REG)
1
1
0
0
EXIT STANDBY
V
OUT
V
STARTUP:
STANDBY
STARTUP
IN
CHARGE
> V
0
G = 1.5
G = 2
TO V
EXIT
G = 1
OUT(START)
Figure 36. Fault State Machine
NOTES
1. V
OUT
1
DMAX
Rev. 0 | Page 18 of 52
IS THE CALCULATED GAIN DOWN TRANSITION POINT.
EXIT STANDBY
100µs (TYP)
SCP FAULT
VOUT < V
100µs (TYP)
100µs (TYP)
WAIT
WAIT
WAIT
1
OUT(SC)
0
DIE TEMP > TSD
MIN (V
< V
0
MIN (V
MIN (V
0
HR(UP)
< V
> V
D1:D9
0
HR(UP)
DMAX
TSD – TSD
D1:D9
D1:D9
DIE TEMP <
)
)
)
0
(HYS)
1
0
0
TSD FAULT
MIN (V
> V
DMAX
D1:D9
)