MAX8831 MAXIM [Maxim Integrated Products], MAX8831 Datasheet - Page 14

• Manufacturer Part Number: MAX8831
• Description: High-Efficiency, White LED Step-Up Converter with I2C Interface in 2mm x 2mm WLP
• Manufacturer: MAXIM [Maxim Integrated Products]

High-Efficiency, White LED Step-Up Converter
with I
Figure 4. State Diagram of Global Faults
14
______________________________________________________________________________________
FAULT CONDITION.
CLEARED FOR ALL
LED_, AND STAT2
UPDATED WITH
REGISTER IS
ENABLE BIT
2
C Interface in 2mm x 2mm WLP
TSD OR OVP FAULT
STRING AND STAT1
FAULT CONDITION.
UPDATED WITH
FAULTED LED_
CLEARED FOR
REGISTER IS
ENABLE BIT
V
ANY CONDITION
DD
ALL CURRENT
REGULATORS
DISABLED
INVALID FROM
REGULATORS ENABLED
LED SHORT OR
ONE OR MORE
OPEN FAULT
CURRENT
BOOST CONVERTER
AND LEDs ARE ON,
REFERENCE, BIAS,
REFERENCE, BIAS,
REFERENCE, BIAS,
AND OSCILLATOR
AND OSCILLATOR
AND OSCILLATOR
REGISTER IS IN
SHUTDOWN
V
ARE OFF; I
I
STANDBY
DD
INTERNAL
INTERNAL
2
INTERNAL
ARE OFF.
C READY.
ARE ON.
RESET.
INVALID.
SCHOTTKY DIODE NOT DETECTED
ON
V
2
ALL CURRENT
REGULATORS
DISABLED USING I
DD
C
VALID
SCHOTTKY DIODE
V
I
COMMAND RECEIVED
2
2
IN
C
C LED_ ENABLE
DETECTED
< V
UVLO
DIODE DETECTION
OPEN SCHOTTKY
REFERENCE, BIAS,
AND OSCILLATOR
REFERENCE, BIAS
AND OSCILLATOR
UVLO CHECK
I
INTERNAL
INTERNAL
2
ARE OFF.
ARE ON.
C READY.
V
IN
> V
UVLO