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參數資料
| 型號： | FSDL321L |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Green Mode Fairchild Power Switch (FPS TM) |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 55 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數： | 13/20頁 |
| 文件大小： | 479K |
| 代理商： | FSDL321L |
FSDL0165RN
13
Figure 12. KA5-series FPS
TM
Full Range EMI scan(67KHz,
no Frequency Modulation) with DVD Player SET
Figure 13. FSDX-series FPS
TM
Full Range EMI Scan
(67KHz, with Frequency Modulation) with DVD Player SET
8. Adjusting Current limit function:
As shown in fig
14, a
combined 2.8K
internal resistance is connected into the
non-inverting lead on the PWM comparator. A external
resistance of Y on the current limit pin forms a parallel resis-
tance with the 2.8K
when the internal diodes are biased by
the main current source of 900uA.
Figure 14. Peak current adjustment
For example, FSDx0265RN has a typical Sense FET
current
limit (I
OVER
) of 2.15A. The Sense FET current
can be limited to
1A by inserting a 2.8k
between the current limit pin and
ground which is derived from the following equations:
2.15: 1 = 2.8K
: XK
,
X = 1.3K
,
Since X represents the resistance of the parallel network, Y
can be calculated using the following equation:
Y = X / (1 - (X/2.8K
))
Frequency (MHz)
A
μ
V
CISPR2QB
CISPR2AB
Frequency (MHz)
A
μ
V
CISPR2QB
CISPR2AB
3
4
PWM
comparator
SenseFET
Sense
K
2
K
8
AK
900uA
5uA
Rsense
Feed
Back
Current
Limit
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FSDL321L_Q | 功能描述:電源開關 IC - 配電 FPS for DVDP/STB RoHS:否 制造商:Exar 輸出端數量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| FSDLC01G-S | 制造商:AXIOMTEK 制造商全稱:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
| FSDLC128-S | 制造商:AXIOMTEK 制造商全稱:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
| FSDLC16G-S | 制造商:AXIOMTEK 制造商全稱:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
| FSDLC256-S | 制造商:AXIOMTEK 制造商全稱:AXIOMTEK 功能描述:Capacity: 128MB to 32GB |
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