LTC3611_15 Datasheet, PDF (9/26 Pages) Linear Technology – 10A, 32V Monolithic Synchronous Step-Down DC/DC Converter

LTC3611
FUNCTIONAL Diagram
R_ON
V_ON
I_ON
35
41
0.7V
2.4V
FCB
39
4.7V
1µA
+
V_RNG
37
t_ON
=
V_VON
I_ION
(10pF)
20k
I_CMP
1.4V
×
(0.5 TO 2)
0.7V
0.6V
–+
F
R
SQ
+
I_REV
–
EXTV_CC
44
–
0.6V
REF
5V
REG
FCNT
ON
SWITCH
LOGIC
SHDN
OV
SV_IN
51, 52
PV_IN
12, 13, 14, 15,
16, 17, 18, 19,
20, 21, 22, 23,
24, 25, 67
C_IN
INTV_CC
53, 54
BOOST
29
M1
C_B
SW
D_B
L1
4, 5, 6, 7, 8, 9,
10, 11, 26, 55,
66
+
C_OUT
M2
C_VCC
PGND
1, 2, 3, 56, 57,
58, 59, 60, 61,
62, 63, 64, 65
36 PGOOD
V_OUT
1
240k
I_THB
Q2 Q4
Q6
Q3 Q1
+– _0.8V
×3.3
EA
1V
SS
–+
0.6V
38
I_TH
0.54V
UV
RUN
SHDN
OV
0.66V
1.2µA
6V
0.4V
30
RUN/SS
C_SS
R2
43
V_FB
R1
SGND
28, 31, 32, 33, 34,
40, 42, 45, 46, 47,
48, 49, 50, 68
NC
27
3611 FD
3611fd