參數(shù)資料
型號(hào)： TPS62220DDC
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 0.88 A SWITCHING REGULATOR, 1850 kHz SWITCHING FREQ-MAX, PDSO5
封裝： PLASTIC, TSOT-23, 5 PIN
文件頁數(shù)： 8/24頁
文件大?。?/td> 664K
代理商： TPS62220DDC
Layout Considerations
VI
GND
EN
SW
FB
C1
4.7
F
L1
4.7
H
C2
10
F
TPS62220
VI
2.5 V 6 V
VO
1.8 V / 400 mA
R1
R2
C1
C2
Typical Applications
VI
GND
EN
SW
FB
C3
10
F
L1
10
H
C4
10
F
TPS62220
VI
3.6 V to 6 V
VO
3.3 V/400 mA
R1
680 k
R2
120 k
C1
10 pF
C2
150 pF
1
2
3
5
4
VI
GND
EN
SW
FB
C3
4.7
F
L1
10
H
C4
10
F
TPS62220
VI
2.7 V to 6 V
VO
2.5 V/400 mA
R1
510 k
R2
130 k
C1
15 pF
C2
150 pF
1
2
3
5
4
SLVS491E – SEPTEMBER 2003 – REVISED FEBRUARY 2009....................................................................................................................................... www.ti.com
For all switching power supplies, the layout is an important step in the design, especially at high-peak currents
and switching frequencies. If the layout is not carefully done, the regulator shows stability problems as well as
EMI problems. Therefore, use wide and short traces for the main current paths, as indicated in bold in Figure 16.
The input capacitor, as well as the inductor and output capacitor, should be placed as close as possible to the IC
pins. In particular, the input capacitor needs to be placed as close as possible to the IC pins, directly across the
Vin and GND pin. The feedback resistor network must be routed away from the inductor and switch node to
minimize noise and magnetic interference. To further minimize noise from coupling into the feedback network
and feedback pin, the ground plane or ground traces must be used for shielding. This becomes important
especially at high switching frequencies of 1.25 MHz.
Figure 16. Layout Diagram
Figure 17. LI-Ion to 3.3-V Conversion
Figure 18. LI-Ion to 2.5-V Conversion
16
Copyright 2003–2009, Texas Instruments Incorporated
相關(guān)PDF資料
PDF描述
TS3431AILT 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PDSO3
TS3431BILT 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PDSO3
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TC151B4913EOA723 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
TC151A4014EOA723 0.25 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS62220DDCR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 400mA Hi-Eff Step-Down Con 15uA RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62220DDCRG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 400mA Hi-Eff Step-Down Con 15uA RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62220DDCT 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 400mA Hi-Eff Step-Down Con 15uA RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62220DDCTG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 400mA Hi-Eff Step-Down Con 15uA RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62220EVM-014 功能描述:電源管理IC開發(fā)工具 TPS62220-014 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
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