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参数资料
| 型号： | LTC3543EDCB#TRM |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.3 A SWITCHING REGULATOR, 2250 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 2 X 3 MM, 0.75 MM HEIGHT, PLASTIC, MO-229, DFN-6 |
| 文件页数： | 9/16页 |
| 文件大小： | 295K |
| 代理商： | LTC3543EDCB#TRM |
LTC3543
2
3543f
VIN Voltage................................................... –0.3V to 6V
RUN, VFB, MODE, CAP Voltages...................–0.3V to VIN
SW Voltage ....................................–0.3V to (VIN + 0.3V)
Operating Temperature Range (Note 2) ... –40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range................... –65°C to 125°C
(Note 1)
The ● denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = 3.6V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RUN
Run Threshold
0.3
1
1.5
V
VFB
Regulated Feedback Voltage
(Note 4)
●
0.588
0.6
0.612
V
IVFB
Feedback Pin Current
1
A
IPK
Peak Inductor Current
VIN = 3.6V, VFB = 0V
0.7
1
1.3
A
VLOADREG
Output Voltage Load Regulation
0.5
%/mA
VLINEREG
Output Voltage Line Regulation
(Note 4)
0.5
%/V
VIN
Input Voltage Range
●
2.5
5.5
V
IS
Input DC Bias Current
Active Mode
Sleep Mode
Shutdown
(Note 5)
VOUT = 90%, ILOAD = 0A
VOUT = 103%, ILOAD = 0A
VRUN = 0V, VIN = 5.5V
375
45
0.1
500
70
1
A
fOSC
Nominal Oscillator Frequency
●
1.80
2.25
MHz
RPFET
RDS(ON) of P-Channel FET
ISW = 100mA
0.45
Ω
RNFET
RDS(ON) of N-Channel FET
ISW = 100mA
0.35
Ω
ISW
SW Leakage
VRUN = 0V, VSW = 0V or 5.5V, VIN = 5.5V
±1
A
ELECTRICAL CHARACTERISTICS
ABSOLUTE
AXI U
RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UU
W
TOP VIEW
V
IN
RUN
VFB
SW
CAP
MODE
DCB PACKAGE
6-LEAD (2mm
× 3mm) PLASTIC DFN
PIN 7 IS GND
4
5
7
6
3
2
1
TJMAX = 125°C, θJA = 64°C/W
ORDER PART NUMBER
DCB PART MARKING
LTC3543EDCB
LCCK
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specied with wider operating temperature ranges.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3543E is guaranteed to meet performance specications
from 0°C to 85°C. Specications over the –40°C to 85°C operating
temperature ranges are assured by design, characterization and correlation
with statistical process controls.
Note 3: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula: TJ = TA + (PD)(64°C/W)
Note 4: The LTC3543 is tested in a proprietary test mode that connects
VFB to the output of the error amplier. This test mode is equivalent to
continuous mode operation.
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
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