- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄220085 > TPS5401DGQT (TEXAS INSTRUMENTS INC) SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 PDF資料下載
參數(shù)資料
| 型號： | TPS5401DGQT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | PLASTIC, MSOP-10 |
| 文件頁數(shù)： | 28/41頁 |
| 文件大小： | 1149K |
| 代理商： | TPS5401DGQT |
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頁當(dāng)前第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
BOOT
VIN
EN
SS/TR
RT/CLK
PH
GND
COMP
VSENSE
PWRGD
Input
Bypass
Capacitor
UVLO
Adjust
Resistors
SlowStart
Capacitor
Frequency
SetResistor
Compensation
Network
Resistor
Divider
Output
Inductor
Output
Capacitor
Vout
Vin
Topside
Ground
Area
Catch
Diode
RouteBootCapacitor
Traceonanotherlayerto
providewidepathfor
topsideground
ThermalVIA
SignalVIA
SLVSAB0 – DECEMBER 2010
www.ti.com
Layout
Layout is a critical portion of good power-supply design. There are several signals paths that conduct
fast-changing currents or voltages that can interact with stray inductance or parasitic capacitance to generate
noise or degrade the power-supply performance. To help eliminate these problems, the VIN pin should be
bypassed to ground with a low-ESR ceramic bypass capacitor with X5R or X7R dielectric. Care should be taken
to minimize the loop area formed by the bypass capacitor connections, the VIN pin, and the anode of the catch
diode. See Figure 54 for a PCB layout example. The GND pin should be tied directly to the thermal pad under
the IC.
The thermal pad should be connected to any internal PCB ground planes using multiple vias directly under the
IC. The PH pin should be routed to the cathode of the catch diode and to the output inductor. Because the PH
connection is the switching node, the catch diode and output inductor should be located close to the PH pins,
and the area of the PCB conductor minimized to prevent excessive capacitive coupling. For operation at full rated
load, the top-side ground area must provide adequate heat dissipating area. The RT/CLK pin is sensitive to
noise, so the RT resistor should be located as close as possible to the IC and routed with minimal lengths of
trace. The additional external components can be placed approximately as shown. It may be possible to obtain
acceptable performance with alternate PCB layouts; however, this layout has been shown to produce good
results and is meant as a guideline.
Figure 54. PCB Layout Example
Estimated Circuit Area
The estimated printed circuit board area for the components used in the design of Figure 40 is 0.55 in2 (3.55
cm2). This area does not include test points or connectors.
34
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS5401
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS60121PWP | 0.2 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PDSO20 |
| TRU050-GACCA49.152-24.576 | PHASE LOCKED LOOP, CDSO16 |
| TRU050-GACHA20.480-10.240 | PHASE LOCKED LOOP, CDSO16 |
| TRU050-GACHA41.943-20.9715 | PHASE LOCKED LOOP, CDSO16 |
| TRU050-GALCA65.536-32.768 | PHASE LOCKED LOOP, CDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS5401EVM-708 | 功能描述:電源管理IC開發(fā)工具 Eval Mod for TPS5401 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS5402 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.5-V TO 28-V INPUT VOLTAGE, 1.7-A OUTPUT CURRENT, NON-SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED MOSFET |
| TPS54020 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5V to 17V Input, 10A Synchronous Step-Down SWIFTa?￠ Converter With Full Feature Set |
| TPS54020_13 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Small, 10-A, 4.5-V to 17-V Input, SWIFT Synchronous Step-Down Converter with Light-Load Efficiency |
| TPS54020EVM-082 | 功能描述:電源管理IC開發(fā)工具 TPS54020 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。