LTC3605_15 Datasheet, PDF (7/22 Pages) Linear Technology – 15V, 5A Synchronous Step-Down Regulator

LTC3605
Block Diagram
x = ^VIN
INTV_CC
100K
35pF
V_OUT
V_ON
9
3pF ^0.6V
6V
I_ON
PLL-SYNC
(±50%)
I_ON
OST
t_ON
=
V_VON
I_ION
(0.64pF)
R
SQ
3 MODE
SV_IN
3.3V
REG
19
1Ω
C_IN2
C_IN
BOOST
20
INTV_CC
21
12 x OSC
RT
1
PHMODE
R_T
2
I_CMP
CLKIN
24
OSC
PLL-SYNC
(±30%)
CLKOUT
23
20k
+
I_REV
–
100k
3pF
–3.3µA TO 6.7µA
35pF
3.3µA
FOLDBACK
DISABLED
AT START-UP
0µA TO 10µA
1
180k
I_THB
Q2 Q4
Q6
0.3V
FOLDBACK
x 4 + 0.6
TG
C_B
ON
SW
SWITCH
LOGIC
11–16
AND
ANTI-
SHOOT
SENSE⁺
D_B
THROUGH
RUN
SENSE^–
OV
BG
C_VCC
PGND
10, 25
8
PGOOD
0.66V
OV
PV_IN
17-18
M1
L1
V_OUT
C_OUT
M2
R2
FB
4
Q1
EA
– ^SS +
0.6V
UV
– ^RUN +
1.2V
INT_VCC
2µA
0.54V
R1
SGND
22
0.6V
REF
ITH
RUN TRACK/SS
6
C_C1
R_C
7
5
C_SS
3605 BD
For more information www.linear.com/LTC3605
3605fd
7