ADP8866 Analog Devices, ADP8866 Datasheet - Page 18
ADP8866
Manufacturer Part Number
ADP8866
Description
Charge Pump Driven 9-Channel LED Driver with Automated LED Lighting Effects
Manufacturer
Analog Devices
Datasheet
1.ADP8866.pdf
(52 pages)
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
)