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參數(shù)資料
| 型號(hào)： | LS7234-S |
| 英文描述： | Analog Miscellaneous |
| 中文描述： | 模擬雜項(xiàng) |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 73K |
| 代理商： | LS7234-S |
OUTPUT
DRIVER
DIGITAL
COMPARATOR
MEMORY
POINTER
PHASE
LOCK
LOOP
CONTROL
LOGIC
BUF
BUF
BUF
BUF
SYNC
CAP
DOZE
EXT
SENS
V
SS
V
DD
FIGURE 4
LS7231-4 BLOCK DIAGRAM
4
3
2
6
5
1
7
TRIG
(+V)
(-V)
8
APPLICATION EXAMPLE:
A typical implementation of a lamp dimmer circuit is shown in Fig. 5. Here the brightness of the lamp is set by touch-
ing the Touch Plate . The functions of different components are as follows:
The 15V DC supply for the chip is provided by Z, D1, R1, C2 and C5.
R2 and C4 generate the filtered signal for the SYNC input for synchronizing the internal PLL with the line
frequency.
R3 and C7 act as a filter circuit for the electronic extension. If extensions are not used, the EXT input (Pin 6)
should be tied to V
DD
(Pin 7).
R4, R5, R6 set up the sensitivity of the SENS input. C6 provides noise filtering.
C3 is the filter capacitor for the internal PLL.
R8 provides current limiting and isolation between the chip output and the triac gate.
C1 and L are RF filter circuits.
In the case of momentary power failure, the circuit state remains unchanged for a period of up to 1 sec. For longer
power interruptions, the output is shut off.
TRIG
SYNC
T
W
T
W
FIGURE 3. TRIG OUTPUT CONDUCTION ANGLE,
7231-4 040695-5
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相關(guān)代理商/技術(shù)參數(shù) |
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| LS7235 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| LS7237 | 制造商:LSI 制造商全稱:LSI 功能描述:TOUCH CONTROL LAMP STEP DIMMER |
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| LS7-25-1 | 功能描述:電線鑒定 BLACK/WHITE 1/4" LAMINATED ADH. RoHS:否 制造商:TE Connectivity / Q-Cees 產(chǎn)品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長(zhǎng)度:1 in |
| LS7-25-2 | 功能描述:電線鑒定 BLACK/CLEAR 1/4" LAMINATED ADH. RoHS:否 制造商:TE Connectivity / Q-Cees 產(chǎn)品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長(zhǎng)度:1 in |
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