- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄44996 > LTC4110EUHF (LINEAR TECHNOLOGY CORP) 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC38 PDF資料下載
參數(shù)資料
| 型號： | LTC4110EUHF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC38 |
| 封裝： | 5 X 7 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WHKD, QFN-38 |
| 文件頁數(shù)： | 42/52頁 |
| 文件大小： | 450K |
| 代理商： | LTC4110EUHF |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁當(dāng)前第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
LTC4110
47
4110fb
PCB LAYOUT CONSIDERATIONS
For maximum efciency, the switch node rise and fall
times should be minimized. To prevent magnetic and
electrical eld (EMI) radiation and high frequency resonant
problems, proper layout of the components connected to
the IC is essential.
Flyback Layout
Lowest EMI and maximum efciency are obtained when the
high frequency switching current loop area is minimized.
It is best to make direct connections, avoiding the use of
other circuit board copper planes, i.e. no vias, in making
the following connections for this prevents current based
noise injection into the copper planes below.
1. Input/output capacitors positive terminals need to
be placed as close as possible between the yback
transformer “top” or positive supply rail connections
and RSNS(FET) ground connection.
2. Place yback MOSFETs drain connections right next
to the yback transformers “bottom” connections.
3. Place the RSNS(FET) current sense resistor right next
to the N-MOSFET source connections completing
the connection back to the input/output capacitors’
negative terminals.
4. Place the snubber connections as close as possible
to the circuit after the above layout connections are
completed as required. Again, avoid using vias.
5. The layer below the yback layout should be ground.
Other Recommendations
6. Optionally use vias to connect power supply sources
positive and negative (ground) connections from
other copper layers to the yback layout. Place
multiple vias in a tight cluster such that they act as
one large via. Recommended 1 via for each 0.5A of
current
7. The current sense feedback traces must be routed
together as a single pair on the same layer at any
given time with smallest trace spacing possible.
Locate any lter component on these traces next to
the IC and not at the sense resistor location.
8. The control IC must be close to the switching FET’s
gate terminals. Keep the gate drive signals short for
a clean FET drive. This includes IC supply pins that
connect to the switching FET source pins. The IC can
be placed on the opposite side of the PCB relative to
yback layout above.
9. Figure 21 shows an inexpensive way to achieve
Kelvin like sensing using standard current sense
resistors.
APPLICATIONS INFORMATION
TO CSP AND CSN
4110 F21
DIRECTION OF CHARGING CURRENT
RSNS(BAT)
Figure 21. Kelvin Sensing of Battery Current
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC4151CS-2#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| LTC4151HMS#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| LTC4151HDD#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| LTC4151HDD#PBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| LTC4155EUFD#PBF | POWER SUPPLY SUPPORT CKT, PQCC28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4110EUHF#PBF | 功能描述:IC BATTERY BACKUP MANAGER 38-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 功能:燃料，電量檢測計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
| LTC4110EUHF#PBF | 制造商:Linear Technology 功能描述:Battery Management IC |
| LTC4110EUHF#TRPBF | 功能描述:IC BATTERY BACKUP MANAGER 38-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
| LTC4110EUHF-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Battery Backup System Manager |
| LTC4110EUHF-TR | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Battery Backup System Manager |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。