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參數(shù)資料
| 型號(hào)： | SC4806MLTRT |
| 廠商： | Semtech Corporation |
| 英文描述： | Multiple Function Double Ended PWM Controller |
| 中文描述： | 多功能雙端PWM控制器 |
| 文件頁數(shù)： | 13/22頁 |
| 文件大?。?/td> | 485K |
| 代理商： | SC4806MLTRT |
13
2006 Semtech Corp.
www.semtech.com
SC4806
POWER MANAGEMENT
Application Information (Cont.)
tween the quiet GND planes that the SC4806 will be
connected to and the noisy high current GND planes
connected to the FETs.
6) The feed back connection between the error ampli-
fier and the FB pin should be kept as short as possible
The GND connections should be connected to the quiet
GND used for the SC4806.
7) If an Opto isolator is used for isolation, quiet primary
and secondary ground planes should be used. The same
precautions should be followed for the primary GND plane
as mentioned in item 5 mentioned above. For the second-
ary GND plane, the GND plane method mentioned in item
4 should be followed.
8) All the noise sensitive components such as LUVLO
resistive divider, reference by pass capacitor, Vcc bypass
capacitor, current sensing circuitry, feedback circuitry,
and the oscillator resistor/capacitor network should be
connected as close as possible to the SC4806. The GND
return should be connected to the quiet SC4806 GND
plane.
9) The connection from the OUTA and OUTB of the
SC4806 should be minimized to avoid any stray induc-
tance. If the layout can not be optimized due to con-
straints, a small Schottky diode may be connected from
the OUTA/B pins to the ground directly at the IC. This will
clamp excessive negative voltages at the IC. If drivers
are used, the Schottky diodes should be connected di-
rectly at the IC from the output of the driver to the driver
ground.
10) If the SYNC function is not used, the SYNC pin should
be grounded at the SC4806 GND to avoid noise pick up.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC4808A | High Performance Dual Ended PWM Controller |
| SC4808AIMSTR | High Performance Dual Ended PWM Controller |
| SC4808AIMSTRT | High Performance Dual Ended PWM Controller |
| SC4808B | High Performance Dual Ended PWM Controller |
| SC4808BIMSTR | High Performance Dual Ended PWM Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC4808A | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Performance Dual Ended PWM Controller |
| SC4808AIMSTR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Performance Dual Ended PWM Controller |
| SC4808AIMSTRT | 制造商:Semtech Corporation 功能描述: |
| SC4808B | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Performance Dual Ended PWM Controller |
| SC4808B-1 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Performance Dual Ended PWM Controller |
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