- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄30771 > LTC3816IUHF#TRPBF (LINEAR TECHNOLOGY CORP) SWITCHING CONTROLLER, PQCC38 PDF資料下載
參數(shù)資料
| 型號： | LTC3816IUHF#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PQCC38 |
| 封裝： | 5 X 7 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38 |
| 文件頁數(shù)： | 33/44頁 |
| 文件大?。?/td> | 753K |
| 代理商： | LTC3816IUHF#TRPBF |
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頁當(dāng)前第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頁第42頁第43頁第44頁
LTC3816
3816f
Figure 22. Sense Resistor and Inductor DCR
Kelvin Current Sensing
applicaTions inForMaTion
Ascanbeseenfromtheaboveequation,thebiggestportion
of the output ripple comes from the ESR of the capacitor.
This is why low ESR capacitors are so important in low
voltage, high current applications.
PC BOARD LAYOUT CHECKLIST
When laying out the printed circuit board, start with the
power devices. Be sure to orient the power circuitry so
that a clean flow of the power path is achieved. Conductor
widths should be maximized and lengths minimized. After
you are satisfied with the power path, the control circuitry
should be laid out. It is much easier to find routes for the
relatively small traces in the control circuits than it is to
find circuitous routes for high current paths. After the
layout, the following checklist should be used to ensure
proper operation of the LTC3816.
1. KeeptheGNDandBSOURCEtracesseparate.Thesignal
ground consists of the LTC3816 GND pin and the (–)
terminal of VOUT. The power ground consists of the
BSOURCE pin, the Schottky diode anode, the source
of the bottom side MOSFET, and the (–) terminal of the
input capacitor. Also, try to connect the (–) terminal
of the output capacitor as close as possible to the (–)
terminalsoftheinputcapacitor.PlacetheLDOceramic
capacitor CINTVCC next to the IC, between INTVCC and
GND. The negative terminals of CIN, COUT and CINTVCC
should be as close as possible to one another.
2. The high di/dt loop formed by the top MOSFET, the
bottom MOSFET and the CIN capacitor should have
short leads and PC trace lengths to minimize high
frequency noise and voltage stress from inductive
ringing.
3. ConnectthedrainofthetopsideMOSFETdirectlytothe
(+) plate of CIN, and connect the source of the bottom
side MOSFET directly to the (–) terminal of CIN. This
capacitor provides the AC current to the MOSFETs.
4. The charge pump capacitor, CB, should also be next
to the IC between BOOST and SW.
5. Place the small-signal components away from high
frequency switching nodes (BOOST, SW, TG and
BG).
6. The AITC amplifier external components should be
placed close to the LTC3816. Only the NTC or PTC
thermistor should be placed near the inductor.
7. Are the VCC(SEN) and VSS(SEN), ISENP and ISENN leads
routed together with minimum PC trace spacing? The
filter capacitor between VCC(SEN) and VSS(SEN) and the
filter capacitor between ISENP and ISENN should be as
close as possible to the LTC3816. Ensure accurate
current sensing with Kelvin connections as shown in
Figure 22.
8. To prevent IMON current from affecting the output
voltage kelvin sense accuracy, the IMON resistor and
VSS(SEN) should be connected to the CPU VSS(SEN) pin
using separate PCB traces.
9. Since the IC ground will normally return to the ground
planes on the PCB through an array of vias, be sure
to avoid having any high di/dt power path currents
flowing under the IC.
10. Any external small-signal components that are con-
nected to ground should be located as close as pos-
sible to the IC, with local connections to GND or the
ground plane using vias.
ISENP
LTC3816
INDUCTOR
OUTPUT CAPACITOR
SENSE
RESISTOR
ISENN
CISR
RISR
CISR
RISR
INDUCTOR
3816 F22
OUTPUT CAPACITOR
SW
ISENP
LTC3816
ISENN
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC3816IUHF#PBF | SWITCHING CONTROLLER, PQCC38 |
| LTC3816IFE#TRPBF | SWITCHING CONTROLLER, PDSO38 |
| LTC3816EFE#PBF | SWITCHING CONTROLLER, PDSO38 |
| LTC3816EFE#TRPBF | SWITCHING CONTROLLER, PDSO38 |
| LTC3823IGN#TRPBF | 4 A SWITCHING CONTROLLER, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3819EG#PBF | 功能描述:IC CNTRLR STEP DOWN 36-SSOP 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 |
| LTC3819EG#TRPBF | 功能描述:IC CNTRLR STEP DOWN 36-SSOP 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 |
| LTC3822EDD#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| LTC3822EDD#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC3822EDD-1#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 12-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。