LTC1706-61 Просмотр технического описания (PDF) - Linear Technology
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LTC1706-61 Datasheet PDF : 8 Pages
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LTC1706-61
U
OPERATIO
In other words, each VID input has a typical pull-up current
of 68µA for a 3.3V system.
Besides the LTC1629-6, the LTC1706-61 also programs a
whole family of LTC DC/DC converters that have an onboard
0.6V reference. The LTC3714, LTC3778 and LTC3731 are
just a few of the high efficiency step-down switching
regulators that will work equally well with the LTC1706-61.
TYPICAL APPLICATIO
2-Phase 12V Input, 0.8V to 1.55V/45A Max Power Supply with Adjustable Overvoltage Protection
OVP
TO SYSTEM
OVERVOLTAGE
PROTECTION
VDD_CORE+
SENSE
VCC
LTC1706-61
COMPARATOR
FB
OVP
THRESHOLD
LOGIC
VID0
VID1
VID2
VID3
FROM
µP
VID4
PWRGD
ENABLE
RUN/SS
D1
C3
BAT54
1nF
C1
0.1µF
R23 48.7k
C9 4.7nF
R6 2.2k
C10 220pF
R24
107k
INTVCC
CLK1
C14 470pF
Q9 (OPT)
C17
2N7002
1nF
VID0
VID1
VID2
VID3
VID4
LTC3719
1
RUN/SS
36
PGOOD
2 SENSE1+
35
TG1
3 SENSE1–
34
SW1
4
EAIN
33
BOOST1
5
PLLFLTR
6
PLLIN
32
VIN
31
BG1
7
FCB
8
ITH
9
SGND
30
EXTVCC
29
INTVCC
28
PGND
10
VDIFFOUT
11 VOS–
12 VOS+
13 SENSE2–
27
BG2
26
BOOST2
25
SW2
24
TG2
14 SENSE2+
23
ATTENIN
15
ATTENOUT
16
NO_CPU
22
VBIAS
21
VID4
17
VID0
20
VID3
18
VID1
19
VID2
C7 1µF
INTVCC
C11 +
2.2µF
C12
10µF
C15
0.47µF
R12 10Ω
R1
10Ω
C5
0.47µF
D3
BAT54A
56 78
Q1
Si7448DP
1 2 3 ×2
56 78
Q2
Si7448DP
1 2 3 ×3
56 78
Q3
Si7448DP
1 2 3 ×2
C13
0.47µF
L2
0.8µH
56 78
Q4
Si7448DP
1 2 3 ×3
D4
B320A
C18
0.1µF
C2
0.47µF
10Ω
L1
0.8µH
10Ω
R5
0.002Ω
D2
B320A
R7
0.002Ω
10Ω 10Ω
CIN1
C8
0.47µF
+
COUT1
R8
50Ω
C16
0.47µF
12VIN
GND
VDD_CORE+
GND
R9
50Ω
COREFB_H
CIN1: SIX 10µF 16V CERAMIC CAPACITORS
COUT1: TEN 22µF 6.3V CERAMIC CAPACITORS
L1, L2: SUMIDA CEP125-1R0MC-H
COREFB_L
1706-61 TA03
170661f
6
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