LTC3727A-1 Datasheet, PDF (30/32 Pages) Linear Technology – High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators

LTC3727A-1
TYPICAL APPLICATIO S
0.1µF
27pF
20k
1%
105k ^1000pF
1%
33pF
15k _220pF
33pF
3.3V
15k _220pF
20k
1%
192.5k _1000pF
27pF
1%
1
RUN/SS1
28
PGOOD
2 _SENSE1+
27
TG1
3 _SENSE1–
26
SW1
4
V_OSENSE1
5
PLLFLTR
6
PLLIN
25
BOOST1
24
V_IN
23
BG1
7
FCB
22
EXTV_CC
8
LTC3727A-1
21
I_TH1
INTV_CC
9
SGND
20
PGND
10
3.3V_OUT
11
I_TH2
12
V_OSENSE2
13 _SENSE2–
19
BG2
18
BOOST2
17
SW2
16
TG2
14 _SENSE2+
15
RUN/SS2
V_PULL-UP
(<7V)
PGOOD
0.1µF
CMDSH-3
1µF
10V
4.7µF
CMDSH-3
0.1µF
M1A
10Ω
0.1µF
M2A
L1
8µH
0.015Ω
M1B
22µF
50V
D1
MBRM
140T3
C_OUT1
47µF
6.3V
V_OUT1
5V
5A; 6A PEAK
GND
C_OUT2 100µF 16V
D2
MBRM
M2B
140T3
L2
0.015Ω
8µH
V_IN
10V TO 15V
V_OUT2
8.5V
3A; 4A PEAK
0.1µF
C_OUT1: PANASONIC EEFCDOJ470R
C_OUT2: SANYO OS-CON 16SVP100M
V_IN: 10V TO 15V
V_OUT: 5V, 5A/8.5V, 3A
SWITCHING FREQUENCY = 250kHz
MI, M2: FAIRCHILD FDS6680A
3727 F13
L1, L2: 8µH SUMIDA CDEP134-8R0
Figure 13. LTC3727A-1 8.5V/3A, 5V/5A Regulator
3727a1f
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