Datasheet

LT3496
8
3496ff
Figure 1. LT3496 Block Diagram Working in Boost Configuration
block DiagraM
–
+
–
+
+
EAMP
A1
–+
V1
PWM1
VC
1V
PWM
COMPARATOR
SLOPE
R1 2k
–+
V
SENSE
I
LED
LED1
M1
R
SENSE
0.2Ω
A8
CTRL
BUFFER
Q3
1V
CTRL1
VC1
Q1
GND
R2
20k
R6
R5
–
+
–
+
A3
SR LATCH
ISENS2
REPLICATED FOR EACH CHANNEL
SHARED COMPONENTS
S
R Q
A2
–
+
A9
A6
NPN
DRIVER
–
+
A10
A4
A7
MOSFET
DRIVER
A5
V
IN
V
REF
f
ADJ
3496 BD
SHDN
OVP1
R3
R4
R
C
PWM1TG1LED1CAP1 SW1
D1
L1
V
IN
C2
C1
C
C
V
IN
C3
C4
INTERNAL
REGULATOR
AND UVLO
2V
REFERENCE
RAMP
GENERATOR
OSCILLATOR
Q2
V
IN
ISRC
200µA