LTC3425 Linear Technology, LTC3425 Datasheet - Page 24

• Manufacturer Part Number: LTC3425
• Description: 5A 8MHz 4-Phase Synchronous Step-Up DC/DC Converter
• Manufacturer: Linear Technology

RELATED PARTS
TYPICAL APPLICATIO
LTC3425
PART NUMBER
LT
LT1371/LT1371HV
LT1613
LT1618
LTC1700
LTC1871
LT1930/LT1930A
LT1946/LT1946A
LT1961
LTC3400/LTC3400B
LTC3401/LTC3402
LTC3701
24
2.5V
V
V
C
C
L1 TO L8: MURATA LQH32CN1R0M51
IN
OUT
®
IN1,2
OUT
R
12.1k
1370/LT1370HV
T1
: TAIYO YUDEN JMK212BJ475MG ( 8)
: TAIYO YUDEN JMK107BJ225MA
R5
75k
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
C
2.2 F
IN1
SHDN
REFOUT
CCM
REFEN
SYNCIN
BURST
R
I
LIM
T
SGND
V
IN
GNDA
SWA
DESCRIPTION
6A (I
Converters
3A (I
Converters
550mA (I
Converter
1.5A (I
Converter
No R
DC/DC Controller
Wide Input Range, 1MHz, No R
Flyback and SEPIC Controller
1A (I
Converters
1.5A (I
DC/DC Converters
1.5A (I
Converter
600mA (I
Converters
1A/2A (I
Converters
2-Phase, 550kHz, Low Input Voltage, Dual Step-Down
DC/DC Controller
10MHz, High Current, Very Low Profile, 8-Phase Converter Using Two LTC3425s Operating
L1
1 H
LTC3425
GNDB
SWB
SW
SW
SENSE
SW
SW
SW
SW
L2
1 H
) 500kHz, High Efficiency Step-Up DC/DC
) 500kHz, High Efficiency Step-Up DC/DC
) 1.2MHz/2.2MHz, High Efficiency Step-Up DC/DC
in Fixed Frequency Mode with Forced CCM (Max Component Height = 1.6mm)
SW
SW
SW
) 1.25MHz, High Efficiency Step-Up DC/DC
) 1.2MHz/2.7MHz, High Efficiency Step-Up
) 1.25MHz, High Efficiency Step-Up DC/DC
GNDC
TM
SWC
) 3MHz, Synchronous Step-Up DC/DC
) 1.4MHz, High Efficiency Step-Up DC/DC
) 1.2MHz, Synchronous Step-Down DC/DC
530kHz, Synchronous Step-Up
L3
1 H
SYNCOUT
GNDD
SWD
PGOOD
V
V
V
V
V
COMP
OUTS
OUTA
OUTB
OUTC
OUTD
U
L4
1 H
SS
FB
C
4.7 F
OUT1
www.linear.com
4
SENSE
R
17.4k
R
10.2k
F4
F3
Current Mode Boost, 92% Efficiency, V
V
OUT
R
14.7k
T2
R6
75k
C
2.2 F
IN2
SHDN
REFOUT
CCM
REFEN
SYNCIN
BURST
R
I
LIM
T
SGND
V
IN
COMMENTS
V
DD, TO220-7
V
DD, TO220-7, S20
90% Efficiency, V
I
90% Efficiency, V
I
95% Efficiency, V
High Efficiency, V
I
High Efficiency, V
I
90% Efficiency, V
I
92% Efficiency, V
I
97% Efficiency, V
MS10
97% Efficiency, V
SD
SD
SD
SD
SD
SD
GNDA
SWA
IN
IN
: <1 A, ThinSOT
: <1 A, MS10
: <1 A, ThinSOT
: <1 A, MS8
: 6 A, MS8E
: <1 A, ThinSOT
: 2.7V to 30V, V
: 2.7V to 30V, V
L5
1 H
LTC3425
GNDB
SWB
L6
1 H
GNDC
SWC
L7
1 H
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
SYNCOUT
OUT(MAX)
OUT(MAX)
: 0.9V to 10V, V
: 1.6V to 18V, V
: 0.9V to 5V, I
: 2.5V to 36V, I
: 2.6V to 16V, V
: 2.45V to 16V, V
: 3V to 25V, V
: 0.85V to 5V, V
: 0.5V to 5V, V
: 2.5V to 10V, I
GNDD
SWD
PGOOD
V
V
V
V
V
COMP
OUTD
OUTS
OUTA
OUTB
OUTC
L8
1 H
SS
FB
: 35V/42V, I
: 35V/42V, I
Q
OUT(MAX)
LINEAR TECHNOLOGY CORPORATION 2003
OUT(MAX)
: 200 A, I
Q
Q
C
0.022 F
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
SS
: 250 A, I
: 460 A, I
OUT(MAX)
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C
4.7 F
OUT2
4
Q
Q
: 4.5mA, I
: 4mA, I
3425 TA05
: 35V, I
330pF
LT/TP 0803 1K PRINTED IN USA
: 6V, I
: 34V, I
: 5V, I
: 34V, I
: 35V, I
SD
C1
: 34V, I
33k
SD
SD
R3
: <10 A, MS10
: <10 A, MS10
: <9 A, SSOP-16
Q
SD
Q
Q
: 38 A, I
: 0.9mA,
SD
: <12 A,
Q
Q
Q
: 19 A/300 A,
: 3mA,
: 1.8mA,
: 4.2mA/5.5mA,
Q
: <12 A,
: 3.2mA,
R
17.4k
R
10.2k
F2
F1
SD
: <1 A,
R4
100k
PGOOD
3425f
V
3.3V
5A
OUT