LT3685 LINER [Linear Technology], LT3685 Datasheet - Page 10

• Manufacturer Part Number: LT3685
• Description: 36V, 4A, 1.5MHz Synchronous Step-Down Switching Regulator
• Manufacturer: LINER [Linear Technology]

LT3690
BLOCK DIAGRAM
10
V
IN
R
T
C
C
R1
R2
IN
SS
13
14
15
16
17
12
11
18
10
5
7
9
GND
EN
UVLO
SYNC
RT
SS
PG
FB
GND
V
V
V
IN
IN
IN
2.5V
2µA
2µA
SOFT-START/TRACKING
0.8V
SLEEP
SYNC
POWER GOOD
+
–
TEMPERATURE
V
+
–
REFERENCE
IN
MONITOR
MONITOR
OSCILLATOR
TO 1.5MHz
TSD
OVLO
UVLO
0.72V
0.17MHz
+
–
2.5V
0.8V
0.72V
OVLO
UVLO
TSD
g
ERROR AMP
m
SLOPE
COMP
VC CLAMP
–
+
BURST MODE
DETECT
OVLO
UVLO
R
S
TSD
FF
Q
CONTROL
SWITCH
OVERLOAD
ZERO
REG
V
IN
–
+
–
+
CURRENT SENSE
SWITCH
SWITCH
–
+
HS
LS
V
CCINT
BIAS
GND
BST
SW
SW
V
C
19
22
20
21
6
8
1, 2
3, 4
23, 24,
25, 26
R
C
C
C
VCC
C
C
C
BST
OUT
L
C
F
3690 BD
3690f
V
OUT