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| 型号： | TPS60121PWPRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.2 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | GREEN, PLASTIC, HTSSOP-20 |
| 文件页数： | 8/30页 |
| 文件大小： | 878K |
| 代理商： | TPS60121PWPRG4 |
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TPS60120, TPS60121, TPS60122, TPS60123, TPS60124, TPS60125
REGULATED 200-mA HIGH EFFICIENCY CHARGE PUMP
DC/DC CONVERTERS
SLVS257B – NOVEMBER 1999 – REVISED AUGUST 2000
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
–0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
–0.2 –0.1 0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
t – Time (Start-Up Timing – ms
VO – V
VI = 2.4 V
RLOAD = 16.5
ENABLE – V
V
O
–
Output
V
oltage
and
Enable
Signal
–
V
TPS60120
OUTPUT VOLTAGE
vs
TIME
(START-UP TIMING)
Figure 26
APPLICATION INFORMATION
capacitor selection
The TPS6012x charge pumps require only four external capacitors as shown in the basic application circuit.
Their values and types are closely linked to the output current and output noise/ripple requirements. For lowest
noise and ripple, low ESR (< 0.1
) capacitors should be used for input and output capacitors.
The input capacitor improves system efficiency by reducing the input impedance. It also stabilizes the input
current of the power source. The input capacitor should be chosen according to the power supply used and the
distance from the power source to the converter IC. The input capacitor also has an impact on the output ripple
requirements. The lower the ESR of the input capacitor Ci, the lower is the output ripple. Ci is recommended
to be about two to four times as large as C(xF).
The output capacitor (CO) can be selected from 5-times to 50-times larger than C(xF), depending on the ripple
tolerance. The larger CO and the lower its ESR, the lower will be the output voltage ripple. Ci and CO can be
either ceramic or low-ESR tantalum; aluminum capacitors are not recommended.
相关PDF资料 |
PDF描述 |
|---|---|
| TPS60122PWPR | 0.2 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PDSO20 |
| TPS60124PWP | 0.2 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PDSO20 |
| TPS60121PWPR | 0.2 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PDSO20 |
| TPS60122PWP | 0.2 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PDSO20 |
| TPS60123PWPG4 | 0.2 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS60122 | 制造商:TI 制造商全称:Texas Instruments 功能描述:REGULATED 3.3 V, 200-mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS |
| TPS60122PWP | 功能描述:电荷泵 Reg 3.3V Hi-Eff Chrg Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60122PWPG4 | 功能描述:电荷泵 Reg 3.3V Hi-Eff Chrg Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60122PWPR | 功能描述:电荷泵 Reg 3.3V Hi-Eff Chrg Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60122PWPRG4 | 功能描述:电荷泵 Reg 3.3V Hi-Eff Chrg Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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