LTC3425 Linear Technology, LTC3425 Datasheet - Page 2

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

ABSOLUTE AXI U RATI GS
LTC3425
(Note 1)
V
SWA-D Voltages ..........................................– 0.3V to 6V
V
BURST, SHDN, SS, REFEN, SYNCOUT, PGOOD,
REFOUT, CCM, SYNCIN Voltages ............... – 0.3V to 6V
Operating Ambient Temperature Range
Storage Temperature Range ................. – 65 C to 125 C
Lead Temperature (Soldering, 10 sec).................. 300 C
temperature range, otherwise specifications are at T
PARAMETER
Minimum Start-Up Voltage
Minimum Operating Voltage
Output Voltage Adjust Range
Feedback Regulation Voltage
Feedback Input Current
V
V
V
NMOS Switch Leakage
PMOS Switch Leakage
NMOS Switch On Resistance
PMOS Switch On Resistance
NMOS Current Limit
2
ELECTRICAL CHARACTERISTICS
OUT
IN
OUT
IN
OUTA-D
(Note 5) .............................................. – 40 C to 85 C
Quiescent Current—Shutdown
Voltage ................................................. – 0.3V to 6V
Quiescent Current—Burst Mode Operation
Quiescent Current—Active
, V
OUTS
Voltages............................ – 0.3V to 6V
W
W W
CONDITIONS
V
(Note 3)
BURST = 0V, REFEN = 0V, FB = 1.3V (Note 2)
BURST = 0V, REFEN = 2V, FB = 1.3V (Note 2)
SHDN = 0V, V
V
V
V
(Note 4)
(Note 4)
I
I
LIM
LIM
OUT
C
SW
SW
= 0V, Nonswitching (Note 2)
Resistor = 75k (Note 4)
Resistor = 200k (Note 4)
U
= 5V
= 5V, V
= 0V, I
A
= 25 C. V
LOAD
OUT
The
OUT
= 0V
< 1mA
= 0V, Not Including Switch Leakage
IN
denotes the specifications which apply over the full operating
= 1.2V, V
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
OUT
ORDER PART
LTC3425EUH
= 3.3V, R
V
V
NUMBER
GNDA
GNDA
GNDB
GNDB
EXPOSED PAD IS GND (PIN 33) MUST BE SOLDERED TO PCB
SWA
OUTA
OUTB
SWB
T
1
2
3
4
5
6
7
8
JMAX
32-LEAD (5mm 5mm) PLASTIC QFN
JA
T
32 31 30 29 28 27 26 25
= 35 C/W 4 LAYER BOARD,
9 10 11 12
= 15k, unless otherwise noted.
= 125 C,
UH PACKAGE
TOP VIEW
JA
= 40 C/W 1 LAYER BOARD,
33
1.196
13 14 15 16
MIN
2.4
5.0
1.8
U
www.DataSheet4U.com
JC
1.220
0.88
0.04
0.05
= 1.1 C/W
TYP
0.1
1.8
0.1
0.1
7.0
2.7
12
18
1
MARKING
UH PART
24
23
22
21
20
19
18
17
3425
W
GNDD
GNDD
SWD
V
V
SWC
GNDC
GNDC
OUTD
OUTC
1.244
MAX
5.25
0.5
50
25
35
10
1
1
3
5
UNITS
U
3425f
mA
nA
V
V
V
V
A
A
A
A
A
A
A