Datasheet

LT3599
8
3599fe
BLOCK DIAGRAM
Figure 1. Block Diagram
3599 F01
V
PTAT
T
SET
CTRL
V
REF
PWM
–
+
–
–
+
OPENLED, SHORTLED
DETECTION
OPENLED
LED1
LED2
LED3
LED4
LED DRIVE
CIRCUITRY
R
DISABLE4
V
O_SW
V
OUT
FB
R2
R1
I
SET
GND
SS
SWSYNCRTV
IN
SHDN/UVLO
–
+
LED g
m
0.7V
V
REF
OVP g
m
A3
A1
1V
–
+
V
C
–
+
PWM DIMMING
LOGIC
OSCILLATOR
1.227 V
REF
1.4V
SOFT-START LOGIC
SLOPE
3
S
Q
SHORTLED
A2
+
–
LED4 DISABLE
Q1
PMOS
–
+