Datasheet

LTC3528B-2
2
3528b2fa
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
V
IN
Voltage ................................................... –0.3V to 6V
SW Voltage
DC ............................................................ –0.3V to 6V
Pulsed < 100ns ........................................ –0.3V to 7V
SHDN, FB Voltage
........................................ –0.3V to 6V
V
OUT
............................................................. –0.3V to 6V
PGOOD
......................................................... –0.3V to 6V
Operating Junction Temperature Range
(Notes 2, 5)
............................................ –40°C to 125°C
Junction Temperature
........................................... 125°C
Storage Temperature Range
................... –65°C to 125°C
(Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Start-Up Voltage I
LOAD
= 1mA
l
0.70 0.88 V
Output Voltage Adjust Range
T
A
= 0°C to 85°C
l
1.7
1.6
5.25
5.25
V
V
Feedback Voltage (Note 7)
l
1.170 1.200 1.230 V
Feedback Input Current V
FB
= 1.3V 1 50 nA
Quiescent Current—Shutdown V
SHDN
= 0V, Not Including Switch Leakage, V
OUT
= 0V 0.01 1 µA
Quiescent Current—Active Measured on V
OUT
, Nonswitching (Note 4) 300 500 µA
N-Channel MOSFET Switch Leakage Current V
SW
= 5V 0.1 10 µA
P-Channel MOSFET Switch Leakage Current V
SW
= 5V, V
OUT
= 0V 0.1 10 µA
N-Channel MOSFET Switch On Resistance 0.175 Ω
P-Channel MOSFET Switch On Resistance 0.250 Ω
N-Channel MOSFET Current Limit
l
1.0 1.5 A
Current Limit Delay Time to Output (Note 3) 60 ns
Maximum Duty Cycle V
FB
= 1.15V
l
87 92 %
Minimum Duty Cycle V
FB
= 1.3V
l
0 %
Frequency
l
1.8 2.0 2.4 MHz
The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
= 25°C (Note 2). V
IN
= 1.2V, V
OUT
= 3.3V, unless otherwise noted.
TOP VIEW
9
DDB PACKAGE
8-LEAD (3mm × 2mm) PLASTIC DFN
5
6
7
8
4
3
2
1SHDN
FB
PGOOD
V
OUT
V
IN
SGND
PGND
SW
T
JMAX
= 125°C, θ
JA
= 76°C/W (NOTE 6)
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3528BEDDB-2#PBF LTC3528BEDDB-2#TRPBF LDPB 8-Lead (3mm × 2mm) Plastic DFN –40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
PIN CONFIGURATION
ORDER INFORMATION