LTC3870_15 Datasheet, PDF (8/22 Pages) Linear Technology – PolyPhase Step-Down Slave Controller for LTC3880/LTC3883 with Digital Power System Management

LTC3870
Block Diagram (CH0 Shown)
10µA _SYNC
DET
27
FREQ
SYNC
11
PHASMD
12
PHASE
PROGRAM
PFD
VCO
OSC
I_CMP
3K
–^IREV
+
EXTV_CC
18
4.8V
S
RQ
5.0V
LDO
EN
5.0V
LDO
EN
I_{LIM ILIM RANGE SELECT}
10
HI: 1:1
LO: 1:1.5
INTV_CC
UVLO
ON
REV
UVLO
FAULTB
FCNT
RUN
SWITCH
LOGIC
AND
ANTI-
SHOOT-
THROUGH
SLOPE
COMPENSATION
1
71.1k
V_IN
20
+
V_IN
C_IN
INTV_CC
17
BOOST0
22
TG0
C_B
24
SW0
23
D_B
BG0
21
PGND
19
I_SENSE0+
2
I_SENSE0–
3
C_VCC
INTV_CC
M1
L
R_C
C_C
V_OUT0
+
C_OUT0
M2
I_TH0 28
1
MODE0
4
RUN0
26
FAULT0
1.7V _REF
29
SGND
3870 BD
3870fa
8
For more information www.linear.com/LTC3870