DC1632A - Schematic

5
E1
4
3
2
1
REVISION HISTORY
VIN
3
RUN
ON
ECO
REV
__
RUN
JP1
2
DESCRIPTION
2
PRODUCTION
APPROVED
MIKE S.
DATE
11-8-11
R1
OPT
OFF
1
R2
OPT
C1
OPT
INTVCC
D
D
R16
OPT
INTVCC
R25
0
R3
0
E2
VIN+
VIN
C2
0.1uF
4
R7
Q7
OPT
4
CIN4
22uF
16V
1210
20
19
C5
1uF
C4
4.7uF
16V
0805
R9
OPT
0.44uH
R10
OPT
VINRS2
0.002
2512
C7
0.1uF
R14 2.2
E19
+COUT4
INFINEON BSC050NE2LS
5
6
7
8
5
6
7
8
17
Q5
OPT
CIN3
22uF
16V
1210
PGND
S1+
R17
10
1
2
3
1
2
3
L1
Q2
EXTVCC
INFINEON BSC010NE2LS
R32
100K
R21
OPT
0.44uH
5
6
7
8
+COUT2
330uF
2.5V
7343-D15T
Q6
OPT
+COUT1
C
330uF
2.5V
7343-D15T E21
E22 GND
R20 OPT
R24
OPT
R19
10
RS1
0.002
2512
COUT5
100uF
6.3V
1206
E8
VO_SNS+
S1-
1
2
3
CMDSH-3
330uF
2.5V
7343-D15T
CIN5
OPT
1210
4
4
+COUT3
330uF
2.5V
7343-D15T
18
VOUT
E20 1.5V / 40A
VOUT
Q1
E7
R35
0
COUT6
100uF
6.3V
1206
1
2
3
Q4
C12 0.1uF
D1
C13
1uF
E18
GND
OPTIONAL DCR
SENSE FILTER /
DIVIDER FOR
PHASE 2
INFINEON BSC010NE2LS
4
R31
OPT
E10
5
6
7
8
5
6
7
8
21
1
2
3
R12
2.2
INTVCC
4
EXTVCC
180uF
16V
S2-
23
EXTVCC
22
R23
0
R26 R27
10
10
R29
10K
OPT
SANYO-F8
1
2
3
1
2
3
25
SW2
TG2
BOOST2
S1-
CIN7
1210
OPT
VIN
4.5V - 14V
+CIN1
E3
Q8
OPT
4
5
6
7
8
C11
1nF
4
1
2
3
S1+
24
33
10
9
TRK/SS
R28 0
R22
15K
BG1
SW1
OPT
E5
E6
RUN
DRVCC1
VOUTSENSE+
CLKOUT
C10
OPT
SGND
TRACK/SS
TG1
8
C9 0.01uF
VIN
16
R18
PGND
ITH
BOOST1
7
E4
PLLIN
RT
15
6
PGOOD
4
C8 470pF
INTVCC
14
5
C6 68pF
R15 22.1K
SGND
DTR
DCM
C
EXTVCC
13
R13 137K
3
CLKOUT
12
SYNC
4
DRVCC2
SENSE1-
FSW = 300kHz
2
BG2
MODE/PLLIN
11
FCM
L2
PHASEMD
SENSE1+
3
1
MODE
JP3
2
R11
10K
VOUTSENSE-
1
CIN8
1210
OPT
+CIN2
R8 OPT
26
27
28
0
SENSE2-
VRNG
SENSE2+
INTVCC
CIN6
OPT
1210
S2+
4
60 DEG
C3
1nF
29
U1
LTC3839EUH
3
S2+
R6
OPT
R5
10
S2-
30
PHASMD
JP2
31
90 DEG
2
32
120 DEG
Q3
5
6
7
8
R4
10
E17
INFINEON BSC050NE2LS
CMDSH-3
5
6
7
8
D2
1
INTVCC
OPTIONAL DCR
SENSE FILTER /
DIVIDER FOR
PHASE 1
E9
VO_SNSE11
GND
INTVCC
GND
B
B
E12
PGOOD
SGND
VOUT
J1
OPTIONAL COUT
1
5
4
3
2
VOUT
NOTES: UNLESS OTHERWISE SPECIFIED
GND
VOUT
3
1. ALL RESISTORS ARE IN OHMS, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
2. INSTALL SHUNTS ON JUMPERS AS SHOWN.
A
2
E15
Q9
SUD50N03-12P
1
R33
10K
ISTEP+
R34
0.005
2010
E16
ISTEPLOAD STEP
5mV / A
5% DUTY CYCLE MAX
E13
+
PULSE
GEN
COUT9
OPT
7343-D15T
+COUT10
OPT
7343-D15T
E14
A
GND
CUSTOMER NOTICE
+COUT11
OPT
7343-D15T
LOAD STEP CIRCUIT
COUT12
+ OPT
7343-D15T
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
TECHNOLOGY
HZ
MIKE S.
TITLE: SCHEMATIC
FAST TRANSIENT STEP-DOWN DC/DC CONVERTER
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
2
N/A
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
IC NO.
REV.
LTC3839EUH
2
DEMO CIRCUIT 1632A
Tuesday, February 07, 2012
SHEET 1
1
OF 1
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