MAX16833 Datasheet, PDF (9/22 Pages) Maxim Integrated Products – High-Voltage HB LED Drivers with Integrated High-Side Current Sense

High-Voltage HB LED Drivers with
Integrated High-Side Current Sense
MAX16833 Functional Diagram
IN
UVLO
VCC
5V REG
BG
UVLO
5V
VBG
7V LDO
THERMAL
SHUTDOWN
TSHDN
5V
LVSH
5V
VCC
NDRV
RT/
SYNC
RT OSCILLATOR
SLOPE
COMPENSATION
CS
CS/PWM
BLANKING
LFRAMP
ICTRL
RAMP
GENERATION
VBG
LPF
0.42V
MIN
OUT
ISENSE+
6.15
ISENSE-
3.3V
3MI
PWMDIM
2V
GM
6.15 x 0.3V
OVP
VBG
1µs DELAY
8192 x tOSC
HICCUP TIMER
PWM
COMP
RESET
DOMINANT
S
Q
R
90% MAX
DUTY CYCLE
MAX16833AUE+
PGND
SYNC
BUCK-BOOST
SHORT DETECTION
SQ
R
TSHDN
COMP
ISENSE+
DIMOUT
VISENSE+ - 7V
FLT
SGND
VBG
_______________________________________________________________________________________   9