ADP8866 Analog Devices, ADP8866 Datasheet - Page 24

• 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
Interrupt Status Register (INT_STAT)—Register 0x02
Table 12. INT_STAT Bit Map
Bit 7
Reserved
Table 13.
Bit Name
N/A
ISCOFF_INT
BLOFF_INT
SHORT_INT
TSD_INT
OVP_INT
N/A
1
Interrupt Enable (INT_EN)—Register 0x03
Table 14. INT_EN Bit Map
Bit 7
Reserved
Table 15.
Bit Name
N/A
ISCOFF_IEN
BLOFF_IEN
SHORT_IEN
TSD_IEN
Interrupt bits are cleared by writing a 1 to the flag; writing a 0 or reading the flag has no effect.
Bit No.
7
6
5
4
3
Bit 6
ISCOFF_INT
Bit 6
ISCOFF_IEN
Bit No.
7
6
5
4
3
2
[1:0]
Description
Reserved.
Automated ISC off indicator.
1 = the automated independent sink off indicator is enabled.
0 = the automated independent sink off indicator is disabled.
Automated backlight off indicator.
1 = the automated backlight off indicator is enabled.
0 = the automated backlight off indicator is disabled.
When this bit is set, an INT is generated anytime that a backlight fade-out is over. This occurs after an automated
fade-out or after the completion of a backlight dimming profile. This is useful to synchronize the complete turn off
for the backlights with other devices in the application.
Short-circuit interrupt enabled. When the SHORT_INT status bit is set after an error condition, an interrupt is raised
to the host if the SHORT_IEN flag is enabled.
1 = the short-circuit interrupt is enabled.
0 = the short-circuit interrupt is disabled (SHORT_INT flag is still asserted).
Thermal shutdown interrupt enabled. When the TSD_INT status bit is set after an error condition, an interrupt is
raised to the host if the TSD_IEN flag is enabled.
1 = the thermal shutdown interrupt is enabled.
0 = the thermal shutdown interrupt is disabled (TSD_INT flag is still asserted).
Description
Reserved.
Independent sink off.
1 = indicates that the controller has ramped all the independent sinks designated in Register 0x04 and
Register 0x05 to off.
0 = the controller has not ramped all designated independent sinks to off.
Backlight off.
1 = indicates that the controller has faded the backlight sinks to off.
0 = the controller has not completed fading the backlight sinks to off.
Short-circuit error.
1 = a short-circuit or overload condition on VOUT or current sinks was detected.
0 = no short-circuit or overload condition was detected.
Thermal shutdown.
1 = device temperature is too high and has been shut down.
0 = no overtemperature condition was detected.
Overvoltage interrupt.
1 = charge-pump output voltage has exceeded V
0 = charge-pump output voltage has not exceeded V
Reserved.
Bit 5
BLOFF_INT
Bit 5
BLOFF_IEN
1
Bit 4
SHORT_INT
Bit 4
SHORT_IEN
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Bit 3
TSD_INT
Bit 3
TSD_IEN
OVP
.
OVP
.
Bit 2
OVP_INT
Bit 2
OVP_IEN
Bit 1
Bit 1
Reserved
Reserved
Bit 0
Bit 0