參數(shù)資料
型號: LT3502AIDC#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 1.1 A SWITCHING REGULATOR, 2800 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 2 X 2 MM, LEAD FREE, PLASTIC, DFN-8
文件頁數(shù): 8/24頁
文件大?。?/td> 386K
代理商: LT3502AIDC#PBF
LT3502/LT3502A
16
3502fd
APPLICATIONS INFORMATION
Figure 7. To Soft-Start the LT3502A, Add a Resistor and Capacitor to the SHDN Pin
Figure 8b. 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 LT3502/LT3502A Runs Only When
the Input is Present
VIN
3502 F08b
SHDN
BOOST
SW
LT3502A
BD
D4
GND
DA
FB
VIN
VOUT
+
Figure 8a. The LT3502A Reduces its Frequency to Below 500kHz
to Protect Against Shorted Output with 40V Input
VSW
10V/DIV
2μs/DIV
VIN = 40V
VOUT = 0V
L = 6.8μH
COUT = 10μF
3502 F08a
IL
500mA/DIV
RUN
VSW
10V/DIV
VIN = 12V
VOUT = 3.3V
L = 6.8μH
COUT = 10μF
VOUT
2V/DIV
5μs/DIV
IL
500mA/DIV
VSW
10V/DIV
VIN = 12V
VOUT = 3.3V
L = 6.8μH
COUT = 10μF
VOUT
2V/DIV
50μs/DIV
3502 F07
IL
500mA/DIV
SHDN
GND
3502 F07a
RUN
50k
0.1μF
SHDN
GND
3502 F07b
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