參數(shù)資料
型號(hào): FSDL0365RN_NL
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: 12 A SWITCHING REGULATOR, 55 kHz SWITCHING FREQ-MAX, PDIP8
封裝: LEAD FREE, MS-001BA, DIP-8
文件頁(yè)數(shù): 4/20頁(yè)
文件大?。?/td> 938K
代理商: FSDL0365RN_NL
FSDL0365RN, FSDM0365RN
12
Figure 11. KA5-series FPS Full Range EMI scan(67KHz,
no Frequency Modulation) with DVD Player SET
Figure 12. FSDX-series FPS Full Range EMI Scan (67KHz,
with Frequency Modulation) with DVD Player SET
8. Adjusting Peak Current Limit : As shown in Figure 13,
a combined 2.8k
internal resistance is connected to the
non-inverting lead on the PWM comparator. A external
resistance of Rx on the current limit pin forms a parallel
resistance with the 2.8k
when the internal diodes are
biased by the main current source of 900uA.
Figure 13. Peak Current Limit Adjustment
For example, FSDx0365RN has a typical Sense FET peak
current limit (ILIM) of 2.15A. ILIM can be adjusted to 1.5A
by inserting Rx between the Ipk pin and the ground. The
value of the Rx can be estimated by the following equations:
2.15A : 1.5A = 2.8k
: Xk ,
X = Rx || 2.8k
.
(X represents the resistance of the parallel network)
Frequency (MHz)
Amplitud
e(dB
V)
Frequency (MHz)
A
m
plitude
(dB
V)
3
Vcc
I
DELAY
I
FB
2kΩ
Vfb
PWM
Comparator
4
Ipk
0.8kΩ
Rx
SenseFET
Current
Sense
900uA
5uA
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