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LTC3868IUHTRPBF Datasheet(PDF) 10 Page - Linear Technology

Part # LTC3868IUHTRPBF
Description  Low IQ, Dual 2-Phase Synchronous Step-Down Controller
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3868IUHTRPBF Datasheet(HTML) 10 Page - Linear Technology

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background image
LTC3868
0
3868fb
FuncTional DiagraM
SW
25, 16
TOP
BOOST
24, 17
TG
26, 15
CB
CIN
D
DB
CLKOUT
PGND
BOT
BG
23, 18
INTVCC
INTVCC
VIN
COUT
VOUT
3868 FD
RSENSE
DROP
OUT
DET
BOT
TOP ON
S
R
Q
Q
SHDN
SLEEP
0.425V
ICMP
2.7V
0.55V
IR
3mV
SLOPE COMP
DUPLICATE FOR SECOND
CONTROLLER CHANNEL
SENSE+
32, 10
SENSE
1, 9
PGOOD1
VFB1
0.88V
0.72V
L
27
21
PGOOD2
FREQ
VFB2
0.88V
0.72V
14
+
+ –
SWITCH
LOGIC
VFB
31, 11
RA
CC
RC
CC2
RB
0.80V
TRACK/SS
0.88V
0.5µA
11V
RUN
7, 8
ITH
30, 12
SS
29, 13
CSS
1µA
10µA
SHDN
CURRENT
LIMIT
FOLDBACK
SHDN
RST
2(VFB)
SHORT CKT
LATCH-OFF
4
PHASMD
3
2
PLLIN/MODE
20µA
VCO
LDO
EN
INTVCC
5.1V
SYNC
DET
100k
CLP
CLK2
CLK1
5
ILIM
28
VIN
EXTVCC
20
22
LDO
PFD
EN
4.7V
5.1V
19
SGND
6
EA
OV


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