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参数资料
| 型号： | LTC3545IUD-1#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.8A 16QFN |
| 标准包装： | 121 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 3 |
| 输出电压： | 0.6 V ~ 5.5 V |
| 输入电压： | 2.25 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 2.25MHz |
| 电流 - 输出： | 800mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-QFN-EP（3x3） |
LTC3545/LTC3545-1
APPLICATIONS INFORMATION
PC Board Layout Checklist
When laying out the printed circuit board, the following
checklist should be used to ensure proper operation of
the LTC3545/LTC3545-1. These items are also illustrated
graphically in Figures 3 and 4. Figure 3 shows the power
path components and traces. In this ?gure the feedback
networks are not shown since they reside on the bottom
side of the board. Check the following in your layout:
1. The power traces consisting of the PGND trace, the SW
trace, the PV IN trace, the V IN and GNDA traces, should
be kept short direct and wide.
2. Does each of the V FBx pins connect directly to the
respective feedback resistors? The resistive dividers
must be connected between the (+) plate of the cor-
responding output ?lter capacitor (e.g. C2) and GNDA.
If the circuit being powered is at such a distance from
the part where voltage drops along circuit traces are
large, consider a Kelvin connection from the powered
circuit back to the resistive dividers.
3. Keep C1 and C5 as close to the part as possible.
4. Keep the switching nodes (SWx) away from the sensi-
tive V FBx nodes.
5. Keep the ground connected plates of the input and
output capacitors as close as possible.
6. Care should be taken to provide enough space between
unshielded inductors in order to minimize any trans-
former coupling.
V OUT3
SW3
L3
C4
(VIA TO FEEDBACK
NETWORK)
V IN
C1
PV IN
PGND
C5
GNDA
SW1
SW2
C3
C2
L1
L2
V OUT2
(VIA TO FEEDBACK
NETWORK)
3545 F03
(VIA TO FEEDBACK
V OUT1
NETWORK)
Figure 3. Layout Diagram
35451fb
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3545IUD-1-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Triple 800mA Synchronous Step-Down Regulator-2.25MHz |
| LTC3545IUD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Triple 800mA Synchronous Step-Down Regulator-2.25MHz |
| LTC3545IUD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Triple 800mA Synchronous Step-Down Regulator-2.25MHz |
| LTC3546 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Synchronous, 3A/1A or 2A/2A Confi gurable Step-Down DC/DC Regulator |
| LTC3546EFE#PBF | 功能描述:IC REG BUCK SYNC ADJ DL 28TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
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