参数资料
| 型号： | LT1942EUF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC REG SW QUAD TFT LCD 24-QFN |
| 标准包装： | 2,500 |
| 应用： | 转换器，TFT |
| 输入电压： | 2.6 V ~ 16 V |
| 输出数： | 4 |
| 输出电压： | 1.25 V ~ 36 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN 裸露焊盘（4x4） |
| 包装： | 带卷 (TR) |
LT1942
APPLICATIO S I FOR ATIO
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.
V OFF OUTPUT
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.
AV DD OUTPUT
V IN
L1
C1
L4
C2
L5
C6
C5
D1
V IN
L2
C3
L3
1
C4
LED1 STRING
LED2 STRING
LED OUTPUT
V ON OUTPUT
LT1942
GND
PLANE
1942 F03
Figure 3: Power Path Component Recommended Layout
(Refer to Figure 4 Component Names)
1942fb
13
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| LT1943EFE | 功能描述:IC REG SW QUAD TFT LCD 28-TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LT1943EFE#PBF | 功能描述:IC REG SW QUAD TFT LCD 28-TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LT1943EFE#TR | 功能描述:IC REG SW QUAD TFT LCD 28-TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
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