LTC3125 Linear Technology, LTC3125 Datasheet - Page 2

• Manufacturer Part Number: LTC3125
• Description: 1.2A Synchronous Step-Up DC/DC Converter
• Manufacturer: Linear Technology

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ABSOLUTE MAXIMUM RATINGS
LTC3125
(Note 1)
V
SW Voltage .................................................. –0.3V to 6V
SW Voltage < 100ns .................................... –0.3V to 7V
All Other Pins ............................................... –0.3V to 6V
Operating Temperature Range
(Notes 2, 5) .............................................. –40°C to 85°C
Junction Temperature ........................................... 125°C
Storage Temperature Range ................... –65°C to 125°C
ORDER INFORMATION
LEAD FREE FINISH
LTC3125EDCB#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
PARAMETER
Input Voltage Range
Minimum Start-Up Voltage
Output Voltage Adjust Range
Feedback Voltage
Feedback Input Current
Quiescent Current—Shutdown
Quiescent Current —Active
Quiescent Current—Burst
N-Channel MOSFET Switch Leakage
P-Channel MOSFET Switch Leakage
N-Channel MOSFET Switch On-Resistance
P-Channel MOSFET Switch On-Resistance
N-Channel MOSFET Current Limit
Current Limit Delay to Output
Average Input Current Limit
ELECTRICAL CHARACTERISTICS
2
temperature range, otherwise specifi cations are at T
IN
, V
OUT
Voltage ......................................... –0.3V to 6V
TAPE AND REEL
LTC3125EDCB#TRPBF
CONDITIONS
V
Measured on V
Measured on V
V
V
V
V
(Note 3)
R
R
SHDN
SW
SW
OUT
OUT
PROG
PROG
http://www.linear.com/leadfree/
= 5V, V
= 5V, V
= 3.3V
= 3.3V
PART MARKING
LDGY
= 0V, Not Including Switch Leakage, V
= 44.2k
= 44.2k, –40°C to 85°C
http://www.linear.com/tapeandreel/
A
IN
OUT
= 25°C. V
= 5V
OUT
OUT
= 0V, V
The
, Nonswitching
, FB = 1.230V
l
IN
IN
denotes the specifi cations which apply over the full operating
= 5V
= 3.3V, V
PIN CONFIGURATION
PACKAGE DESCRIPTION
8-Lead (2mm × 3mm) Plastic DFN
OUT
= 4.5V unless otherwise noted.
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
OUT
PROG
= 0V
GND
V
FB
8-LEAD (2mm 3mm) PLASTIC DFN
T
IN
JMAX
1
2
3
4
= 125°C, θ
l
l
l
l
l
DCB PACKAGE
TOP VIEW
JA
1.176
MIN
475
465
9
1.8
1.2
= 64°C/W (NOTE 6)
2
1.200
0.125
0.200
0.01
TYP
300
500
500
1.6
0.1
0.1
1.8
8
7
6
5
TEMPERATURE RANGE
–40°C to 85°C
15
60
1
SW
V
SHDN
CS
OUT
1.229
MAX
5.25
500
525
535
5.5
1.8
50
25
10
20
1
UNITS
3125f
mA
mA
nA
μA
μA
μA
μA
μA
ns
Ω
Ω
V
V
V
V
A