ISL78100 Datasheet, PDF (10/19 Pages) Intersil Corporation – High Power LED Driver

Functional Block Diagram
2.7V TO 16V
GND
VBAT FAULT
VIN
START-UP
CHARGE PUMP ^VSTART
FAULT CONTROL
AND TIMER
HALT
V_START
V_DC
REF
POR
LEVEL
EN O/P
LIGHT CONTROL
LEVEL (T)
CLK
R_AMP
HALT
MODE
EN/PWM
BUCK/
BOOSTN
MODE CONTROL
HALT
TEMPERATURE
COMPENSATION
TEMP TMAX
L
VDC
VHI
LDO AND REF _REF
CLOCK AND RAMP
GENERATOR
CLK
R_AMP
OVP
INNER LOOP
PWM CONTROL
AND CURRENT
LIMIT
FET
CURRENT
SENSE
V_DC
EN O/P
SWD2
SWD1
SWS1
SWS2
ENL
LOAD
CURRENT
SENSE
FB
ISL78100
FIGURE 28. ISL78100 BLOCK DIAGRAM