參數(shù)資料
型號(hào)： LT3493EDCB#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 2.2 A SWITCHING REGULATOR, 815 kHz SWITCHING FREQ-MAX, PDSO6
封裝： 2 X 3 MM, LEAD FREE, PLASTIC, MO-229, DFN-6
文件頁(yè)數(shù)： 6/20頁(yè)
文件大小： 588K
代理商： LT3493EDCB#PBF
LT3493
14
3493fb
APPLICATIONS INFORMATION
RUN
VSW
10V/DIV
VIN = 12V
VOUT = 3.3V
L = 10μH
COUT = 10μF
VOUT
2V/DIV
20μs/DIV
IL
0.5A/DIV
VSW
10V/DIV
VIN = 12V
VOUT = 3.3V
L = 10μH
COUT = 10μF
VOUT
2V/DIV
20μs/DIV
IL
0.5A/DIV
SHDN
GND
3493 F07a
RUN
15k
0.1μF
SHDN
GND
3493 F07b
Figure 7. To Soft-Start the LT3493, Add a Resistor and Capacitor to the SHDN Pin. VIN = 12V, VOUT = 3.3V, COUT = 10μF, RLOAD = 5Ω
VIN
BOOST
GND
FB
SHDN
SW
D4
VIN
LT3493
3493 F08
VOUT
BACKUP
D4: MBR0540
Figure 8. Diode D4 Prevents a Shorted Input from Discharging
a Backup Battery Tied to the Output; It Also Protects the Circuit
from a Reversed Input. The LT3493 Runs Only When the Input
is Present
a complete discussion). The low loss ceramic capacitor
combined with stray inductance in series with the power
source forms an underdamped tank circuit, and the voltage
at the VIN pin of the LT3493 can ring to twice the nominal
input voltage, possibly exceeding the LT3493’s rating and
damaging the part. If the input supply is poorly controlled
or the user will be plugging the LT3493 into an energized
supply, the input network should be designed to prevent
this overshoot.
Figure 9 shows the waveforms that result when an LT3493
circuit is connected to a 24V supply through six feet of
24-gauge twisted pair. The rst plot is the response with
相關(guān)PDF資料
PDF描述
LT3493IDCB#PBF 2.2 A SWITCHING REGULATOR, 815 kHz SWITCHING FREQ-MAX, PDSO6
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LT3493EDCB#TR 2.2 A SWITCHING REGULATOR, 815 kHz SWITCHING FREQ-MAX, PDSO6
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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LT3493EDCB-TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN
LT3493IDCB 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN
LT3493IDCB#PBF 制造商:Linear Technology 功能描述:BUCK SW REG 1.4A 750KHZ 6D 制造商:Linear Technology 功能描述:DC-DC CONVERTER BUCK 750KHZ 制造商:Linear Technology 功能描述:BUCK, SW REG, 1.4A, 750KHZ, 6DFN 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, 750KHZ, 1.2A, DFN-6; Primary Input Voltage:36V; No. of Outputs:1; Output Voltage:780mV; Output Current:1.2A; No. of Pins:6; Operating Temperature Min:-40C; Operating Temperature Max:125C; Package / Case:6-DFN;RoHS Compliant: Yes
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