參數(shù)資料
型號(hào)： TPS60122PWPRG4
廠商： Texas Instruments, Inc.
英文描述： REGULATED 3.3 V, 200-mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS
中文描述： 穩(wěn)壓3.3伏，200毫安高效率電荷泵DC / DC轉(zhuǎn)換器
文件頁(yè)數(shù)： 16/27頁(yè)
文件大小： 561K
代理商： TPS60122PWPRG4
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
VO
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 C
i
, the lower is the output ripple. C
i
is recommended
to be about two to four times as large as C
(xF)
.
The output capacitor (C
O
) can be selected from 5-times to 50-times larger than C
(xF)
, depending on the ripple
tolerance. The larger C
O
and the lower its ESR, the lower will be the output voltage ripple. C
i
and C
O
can be
either ceramic or low-ESR tantalum; aluminum capacitors are not recommended.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS60123 制造商:TI 制造商全稱:Texas Instruments 功能描述:REGULATED 200-mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS
TPS60123PWP 功能描述:電荷泵 Reg 3.3V Hi-Eff Chrg Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
TPS60123PWPG4 功能描述:電荷泵 Reg 3.3V Hi-Eff Chrg Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
TPS60123PWPR 功能描述:電荷泵 Reg 3.3V Hi-Eff Chrg Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
TPS60123PWPRG4 功能描述:電荷泵 Reg 3.3V Hi-Eff Chrg Pump DC/DC Converter RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
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