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參數(shù)資料
| 型號： | LT1942EUF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Quad DCDC Converter for Triple Outputs TFT Supply Plus LED Driver |
| 中文描述： | 4 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | 4 X 4 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WGGD, QFN-24 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 248K |
| 代理商： | LT1942EUF |
LT1942
13
1942fa
Layout Hints
Proper layout techniques must be followed to achieve
advertised performance of the part. Keep all SW and FB
traces short and small. There are several power ground
pins on the LT1942 and it is important to implement the
grounding properly. PGND14 is the power ground pin for
the AV
DD
and LED switchers. The output capacitor for both
the AV
DD
and LED switcher must be returned back to this
pin before being allowed to mix into the ground plane.
Similarly, PGND23 is the power ground pin for the V
ON
and
V
OFF
switcher. Again, both output capacitors for the V
ON
and V
OFF
switchers need to return to the PGND23 pin
before mixing with the ground plane. Place the input
decoupling capacitor, which ties from the V
CC
pin to GND,
as close to the part as possible. Please refer to Figure 3 for
a recommended layout of the power path components.
The component names are those shown in the circuit of
Figure 4.
APPLICATIU
W
U
U
V
IN
V
IN
LED1 STRING
LED2 STRING
LED OUTPUT
1942 F03
C2
L5
C6
C5
C1
D1
L1
C4
L2
L4
L3
C3
V
ON
OUTPUT
GND
PLANE
LT1942
1
V
OFF
OUTPUT
AV
DD
OUTPUT
Figure 3: Power Path Component Recommended Layout
(Refer to Figure 4 Component Names)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1942EUF#PBF | 功能描述:IC REG SW QUAD TFT LCD 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件 |
| LT1942EUF#TRPBF | 功能描述:IC REG SW QUAD TFT LCD 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件 |
| LT1942EUFPBF | 制造商:Linear Technology 功能描述:Conv DC-DC Quad Inv/Step-Up 16V QFN24EP |
| LT1943 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad DCDC Converter for Triple Outputs TFT Supply Plus LED Driver |
| LT1943_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Current Quad Output Regulator for TFT LCD Panels |
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