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參數(shù)資料
| 型號(hào)： | FAN7585 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Intelligent Voltage Mode PWM IC |
| 中文描述： | 0.2 A SWITCHING CONTROLLER, PDIP24 |
| 封裝： | SDIP-24 |
| 文件頁(yè)數(shù)： | 10/16頁(yè) |
| 文件大?。?/td> | 437K |
| 代理商： | FAN7585 |
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FAN7585
10
2. UVP Block
The block is made up of a comparator with three detecting inputs and without hysteresis voltage. Each UVP level is
determined by resistor ratio and the typical values are 2.3V/4.0V/10V respectively.
UVP detecting voltage for +3.3V
UVP detecting voltage for +5V
UVP detecting voltage for +12V
In the case of UVP, a system designer should know a fact that the main power can be dropped after some delay. (38msec@
C
TUVP
=0.47uF)
So when the UVP level is tested with a set, you should remove protection delay capacitor(Pin20) and check PG(Pin11). You
can know the each UVP level as checking each output voltage in just time that PG(Pin11) is triggered from high to low.
12V
1.25V
R1
R2
R3
R4
R5
R6
UVP COMP
Vref=5V
SET of
R/S Latch
A
C
B
3.3V
5V
18
14
16
VUVP1+3.3V
)
---------------------
+
R2
VA
×
---------------------
+
R2
=
Vref
×
2.3V
=
=
VUVP2+5V
)
---------------------
+
VB
×
---------------------
+
=
Vref
×
4V
=
=
VUVP3+12V
)
---------------------
+
R6
VC
×
---------------------
+
R6
=
Vref
×
10V
=
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN7585SN | 功能描述:電壓模式 PWM 控制器 PWM/ Secondary Combo IC RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| FAN7601 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green Current Mode PWM Controller |
| FAN7601_05 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green Current Mode PWM Controller |
| FAN7601B | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green Current Mode PWM Controller |
| FAN7601B_11 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green Current Mode PWM Controller |
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