- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385013 > TPS6205 (Texas Instruments, Inc.) 800-mA SYNCHRONOUS STEP-DOWN CONVERTER PDF資料下載
參數(shù)資料
| 型號(hào)： | TPS6205 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 800-mA SYNCHRONOUS STEP-DOWN CONVERTER |
| 中文描述： | 800毫安同步降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 18/21頁 |
| 文件大?。?/td> | 432K |
| 代理商： | TPS6205 |
www.ti.com
I
RMS(Co)
V
O
1–
VO
VI
L
f
1
2
3
V
O
V
O
1
VO
VI
f
L
1
C
o
8
f
R
ESR
I
RMS
I
O
(max)
VO
VI
1
VO
VI
TPS62050, TPS62051
TPS62052, TPS62054, TPS62056
SLVS432D–SEPTEMBER 2002–REVISED OCTOBER 2003
APPLICATION INFORMATION (continued)
OUTPUT CAPACITOR SELECTION
The output capacitor should have a minimum value of 22μF. For best performance, a low ESR ceramic output
capacitor is needed.
For completeness, the RMS ripple current is calculated as:
The overall output ripple voltage is the sum of the voltage spike caused by the output capacitor ESR plus the
voltage ripple caused by charge and discharging the output capacitor:
The highest output voltage ripple occurs at the highest input voltage V
I
.
INPUT CAPACITOR SELECTION
Because the buck converter has a pulsating input current, a low ESR input capacitor is required for best input
voltage filtering and minimizing the interference with other circuits caused by high input voltage spikes. The input
capacitor should have a minimum value of 10 μF and can be increased without any limit for better input voltage
filtering. The input capacitor should be rated for the maximum input ripple current calculated as:
The worst case RMS ripple current occurs at D = 0.5 and is calculated as: I
RMS
= I
O
/2. Ceramic capacitors have a
good performance because of their low ESR value and they are less sensitive to voltage transients compared to
tantalum capacitors. Place the input capacitor as close as possible to the input pin of the IC for best
performance.
Table 3. Capacitors
MANUFACTURER
PART NUMBER
SIZE
VOLTAGE
CAPACITANCE
TYPE
JMK212BJ106MG
0805
6.3 V
10 μF
Ceramic
JMK316BJ106ML
1206
6.3 V
10 μF
Ceramic
JMK316BJ226ML
1206
6.3 V
22 μF
4.7 μF(1)
4.7 μF(1)
Ceramic
Taiyo Yuden
LMK316BJ475ML
1206
10 V
Ceramic
EMK316BJ475ML
1206
16 V
Ceramic
EMK325BJ106KN-T
1210
16 V
10 μF
Ceramic
Kemet
C1206C106M9PAC
1206
6.3 V
10 μF
Ceramic
C2012X5R0J106M
0805
6.3 V
10 μF
Ceramic
TDK
C3216X5R0J226M
1206
6.3 V
22 μF
Ceramic
C3216X5R1A106M
1206
10 V
10 μF
Ceramic
(1)
Connect two in parallel.
18
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS63700DRC | DC-DC INVERTER |
| TPS65010RGZ | POWER AND BATTERY MANAGEMENT IC FOR Li-ION POWERED SYSTEMS |
| TPS65011RGZ | POWER AND BATTERY MANAGEMENT IC FOR Li-ION POWERED SYSTEMS |
| TPS65013RGZ | POWER AND BATTERY MANAGEMENT IC FOR Li-ION POWERED SYSTEMS |
| TPS65020RHA | POWER MANAGEMENT IC FOR LI-ION POWERED SYSTEMS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS62050DGS | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 800mA 10V Vin Step-Down Converter 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 |
| TPS62050DGSG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 800mA 10V Vin Step-Down Converter 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 |
| TPS62050DGSR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 800mA 10V Vin Step-Down Converter 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 |
| TPS62050DGSR | 制造商:Texas Instruments 功能描述:DC/DC Converter IC |
| TPS62050DGSRG4 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Adj 800mA 10V Vin Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。