Datasheet

LTC3861
11
3861fa
For more information www.linear.com/LTC3861
FuncTional Diagram
25
ISNS1P
24
ISNS1N
23
272032
ISNS2N
I
AVG
I
LIM2
I
LIM1
20µA
20µA
20µA
12
FREQ
15
PHSMD
14
CLKOUT
13
18
CLKIN
3861 BD
OC1
NOC1
OC2
NOC2
22
ISNS2P
x18.5
x18.5
10
FB2
9
COMP2
11
TRACK/SS2
EA2
REF
REF
1
FB1
35
TRACK/SS1
2
COMP1
EA1
+
+
–
+
+
–
+
–
+
–
4
VSNSN1
28
RUN1
100k
V
CC
1.5µA
1.5µA
V
CC
19
RUN2
3
VSNSP1
5
VSNSOUT1
DA
S
V
FB1
I
LIM1
V
FB2
I
LIM2
S
MASTER/SLAVE/
INDEPENDENT
SD/UVLO
31
PGOOD1
V
FB1
V
FB2
16
PGOOD2
RAMP/SLOPE/
FEEDFORWARD
PGOOD
LOGIC
OC1 OC2
OV1 OV2
NOC1
NOC2
PWM2
34
VINSNS
29
PWM1
17
PWMEN2
30
PWMEN1
PLL/VCO
BG/BIAS
V
CC
V
CC
V
CC
100k
V
CC
36
V
CC
21
SGND
26
SGND
33
CONFIG
+
+
7
VSNSN2
8
VSNSP2
6
VSNSOUT2
DA