LTC3856_15 Datasheet, PDF (37/40 Pages) Linear Technology – 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp

Typical Application
LTC3856
1nF
100pF ^5.6k
100k, 1%
0.1µF
20k
30.1k
INTV_CC
100k
PGOOD
V_IN
2.2Ω 0.1µF
CLKOUT V_IN
PLLIN
SENSE1^–
SENSE1⁺
FREQ
TG1
RUN
SW1
TK/SS
I_TH
BOOST1
V_FB
LTC3856
BG1
AVP
INTV_CC
ITEMP
PHASMD
DIFFP
DIFFN
TG2
BOOST2
DIFFOUT
ISET
SW2
EXTV_CC
ILIM
BG2
SENSE2⁺
MODE
PGOOD PGND SGND SENSE2^–
100Ω 100Ω
1nF
Q1
RJK0305DPB
Q5
RJK0305DPB
0.1µF
Q2
RJK0330DPB
INTV_CC
D1, CMDSH-3
INTV_CC
Q3
4.7µF ^RJK0305DPB
D2, CMDSH-3
Q7
RJK0305DPB
INTV_CC
0.1µF
Q4
RJK0330DPB
1nF
100Ω
100Ω
V_IN
22µF
22µF
L1
0.22µH
0.001Ω
Q6
RJK0330DPB
V_IN
22µF
22µF
L2
0.22µH
0.001Ω
Q8
RJK0330DPB
V_IN
+
180µF
16V
s2
V_IN
4.5V
TO 14V
100µF
6.3V
s4
+
330µF
2.5V
s4
GND
V_OUT
1.5V/
50A
4.7µF
6.3V
10Ω
10Ω
3856 F18
Figure 18. 1.5V/50A Converter Using Sense Resistors
3856f
37