LTC3528-2 데이터 시트보기 (PDF) - Linear Technology
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LTC3528-2 Datasheet PDF : 18 Pages
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LTC3528-2
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN 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
VOUT.............................................................. –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
PIN CONFIGURATION
TOP VIEW
SHDN 1
8 VIN
FB 2
7 SGND
9
PGOOD 3
6 PGND
VOUT 4
5 SW
DDB PACKAGE
8-LEAD (3mm × 2mm) PLASTIC DFN
TJMAX = 125°C, θJA = 76°C/W (NOTE 6)
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3528EDDB-2#PBF
LTC3528EDDB-2#TRPBF LDNZ
8-Lead (3mm × 2mm) Plastic DFN
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/
TEMPERATURE RANGE
–40°C to 125°C
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 1.2V, VOUT = 3.3V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN Range
Minimum Start-Up Voltage
Output Voltage Adjust Range
Feedback Voltage
Operating, Excluding Start-Up
ILOAD = 1mA
TA = 0°C to 85°C
(Note 7)
l 0.5
5.5
V
l
0.70 0.88
V
l 1.7
1.6
5.25
V
5.25
V
l 1.170 1.200 1.230
V
Feedback Input Current
Quiescent Current—Shutdown
Quiescent Current—Active
Quiescent Current—Burst
N-Channel MOSFET Switch Leakage Current
P-Channel MOSFET Switch Leakage Current
N-Channel MOSFET Switch On Resistance
VFB = 1.3V
VSHDN = 0V, Not Including Switch Leakage, VOUT = 0V
Measured on VOUT, Nonswitching (Note 4)
Measured on VOUT , FB > 1.230V
VSW = 5V
VSW = 5V, VOUT = 0V
1
50
nA
0.01
1
µA
300
500
µA
12
20
µA
0.1
10
µA
0.1
10
µA
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
VFB = 1.15V
l 87
92
%
35282fb
2
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