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參數(shù)資料
| 型號(hào)： | LTC3127EDD#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO10 |
| 封裝： | 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10 |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 366K |
| 代理商： | LTC3127EDD#PBF |
LTC3127
3127f
SW1
SW2
VIA TO
GROUND
VIN
VOUT
SHDN
MODE
PROG
SGND
PGND
FB
VC
VIA TO
GROUND
3127 F04
10
9
6
7
8
4
5
3
2
1
Figure 4. Recommended PCB Layout
applicaTions inForMaTion
PCB Layout Considerations
The LTC3127 switches large currents at high frequencies.
Special care should be given to the PCB layout to ensure
stable, noise-free operation. Figure 4 depicts the recom-
mended PCB layout to be utilized for the LTC3127. A few
key guidelines follow:
1. All circulating high current paths should be kept as short
as possible. This can be accomplished by keeping the
routes to all bold components in Figure 4 as short and
as wide as possible. Capacitor ground connections
should via down to the ground plane in the shortest
route possible. The bypass capacitor on VIN should be
placed as close to the IC as possible and should have
the shortest possible path to ground.
2. The small-signal ground pad (SGND) should have a
single point connection to the power ground. A con-
venient way to achieve this is to short the pin directly
to the Exposed Pad as shown in Figure 4.
3. The components shown in bold and their connections
should all be placed over a complete ground plane.
4. To prevent large circulating currents from disrupting
the output voltage sensing, the ground for the resistor
divider and RPROG should be returned directly to the
small signal ground pin (SGND).
5. Use of vias in the die attach pad will enhance the ther-
mal environment of the converter especially if the vias
extend to a ground plane region on the exposed bottom
surface of the PCB.
6. Keep the connections to the FB and PROG pins as
short as possible and away from the switch pin con-
nections.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3127EDDTRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1A Buck-Boost DC/DC Converter with Programmable Input Current Limit |
| LTC3127EMSE | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1A Buck-Boost DC/DC Converter with Programmable Input Current Limit |
| LTC3127EMSE#PBF | 功能描述:IC BUCK BOOST SYNC ADJ 12MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動(dòng)設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
| LTC3127EMSE#PBF | 制造商:Linear Technology 功能描述:BUCK-BOOST DC/DC CONVERTER IC 制造商:Linear Technology 功能描述:IC, BUCK/BOOST DC/DC CONVERTER, MSOP-12 |
| LTC3127EMSE#TRPBF | 功能描述:IC DCDC CONV BUCK BOOST 12MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動(dòng)設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
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