LT3724_1 Datasheet, PDF (8/26 Pages) Linear Technology – High Voltage, Current Mode Switching Regulator Controller Thermal Shutdown

LT3724
FUNCTIONAL DIAGRAM
V_IN
UVLO
(<4V)
8V V_CC
V_IN
REGULATOR
V_IN
1
C_IN
V_CC
UVLO
(<6V)
3.8V
REGULATOR
INTERNAL
SUPPLY RAIL
RA
SHDN
3
RB
BURST_EN
5
V_FB
6
R1 R2
–+
FEEDBACK
REFERENCE
1.231V
–+
g_m
ERROR
0.5V
AMP
BST
UVLO
DRIVE
CONTROL
NOL
SWITCH
LOGIC
DRIVE
CONTROL
BOOST
16
C_BOOST
BOOSTED
SWITCH
DRIVER
TG
15
SW
14
V_CC
12
D2
C_VCC
PGND
11
QS
OSCILLATOR
C_C2
R_C
C_C1
V_C
7
SOFT-START
DISABLE/BURST
ENABLE
~1V
1.185V
C_SS
2µA
4
C_SS
SGND
8
R
CURRENT
SENSE
COMPARATOR
SLOPE COMP
GENERATOR
BURST MODE
OPERATION
–+
–+
SENSE⁺
10
SENSE^–
9
M1
L1
R_SENSE
D1
D3
(OPTIONAL)
V_OUT
C_OUT
3724 FD
3724fd
8