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參數(shù)資料
| 型號： | C2012X5R1A225M |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER |
| 中文描述： | 未穩(wěn)壓60 mA充電泵電壓型逆變器 |
| 文件頁數(shù)： | 17/23頁 |
| 文件大?。?/td> | 430K |
| 代理商： | C2012X5R1A225M |
TPS60400, TPS60401, TPS60402, TPS60403
UNREGULATED 60-mA CHARGE PUMP VOLTAGE INVERTER
SLVS324
–
JULY 2001
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
paralleling devices
Paralleling multiple TPS6040xs reduces the output resistance. Each device requires its own flying capacitor
(C
(fly)
), but the output capacitor (C
O
) serves all devices (see Figure 29). Increase C
O
’
s value by a factor of n,
where n is the number of parallel devices. Equation 1 shows the equation for calculating output resistance.
TPS60400
OUT
C1+
IN
C1
–
GND
1
2
3
5
4
C(fly)
1
μ
F
CI
1
μ
F
VO (
–
VI)
GND
VI
GND
TPS60400
OUT
C1+
IN
C1
–
GND
1
2
3
5
4
C(fly)
1
μ
F
CO
2.2
μ
F
+
Figure 29. Paralleling Devices
active-Schottky diode
For a short period of time, when the input voltage is applied, but the inverter is not yet working, the output
capacitor is charged positive by the load. To prevent the output being pulled above GND, a Schottky diode must
be added in parallel to the output. The function of this diode is integrated into the TPS6040x devices, which gives
a defined startup performance and saves board space.
A current sink and a diode in series can approximate the behavior of a typical, modern operational amplifier.
Figure 30 shows the current into this typical load at a given voltage. The TPS6040x devices are optimized to
start into these loads.
TPS60400
C1
–
C1+
5
3
OUT
IN
GND
1
2
4
CI
1
μ
F
CO
1
μ
F
C(fly)
1
μ
F
Typical
Load
IO
VO (
–
VI)
+V
–
V
VI
GND
60 mA
25 mA
0.4 V 1.25 V
5 V
Load Current
Voltage at the Load
0.4 V
Figure 30. Typical Load
Figure 31. Maximum Start-Up Current
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| C2012X5R1A225M/0.80 | 功能描述:多層陶瓷電容器MLCC - SMD/SMT RoHS:否 制造商:American Technical Ceramics (ATC) 電容:10 pF 容差:1 % 電壓額定值:250 V 溫度系數(shù)/代碼:C0G (NP0) 外殼代碼 - in:0505 外殼代碼 - mm:1414 工作溫度范圍:- 55 C to + 125 C 產(chǎn)品:Low ESR MLCCs 封裝:Reel |
| C2012X5R1A225M/0.85 | 功能描述:多層陶瓷電容器MLCC - SMD/SMT 0805 2.2uF 10volts X5R 20%Thk 0.85mm RoHS:否 制造商:American Technical Ceramics (ATC) 電容:10 pF 容差:1 % 電壓額定值:250 V 溫度系數(shù)/代碼:C0G (NP0) 外殼代碼 - in:0505 外殼代碼 - mm:1414 工作溫度范圍:- 55 C to + 125 C 產(chǎn)品:Low ESR MLCCs 封裝:Reel |
| C2012X5R1A225M/1.25 | 功能描述:多層陶瓷電容器MLCC - SMD/SMT 2.2uF 20% 10Volts RoHS:否 制造商:American Technical Ceramics (ATC) 電容:10 pF 容差:1 % 電壓額定值:250 V 溫度系數(shù)/代碼:C0G (NP0) 外殼代碼 - in:0505 外殼代碼 - mm:1414 工作溫度范圍:- 55 C to + 125 C 產(chǎn)品:Low ESR MLCCs 封裝:Reel |
| C2012X5R1A225M/10 | 制造商:TDK CORPORATION OF AMERICA 功能描述:MLCC |
| C2012X5R1A225M085AA | 制造商:TDK 功能描述:CAP 2.2UF 10VDC X5R 20% SMD 0805 - Tape and Reel 制造商:TDK 功能描述:CAP CER 2.2UF 10V 20% X5R 0805 制造商:TDK 功能描述:CAPACITOR CERAMIC, 2.2UF, 10V, X5R, 20%, 0805; Capacitance:2.2F; Capacitance Tolerance: 20%; Dielectric Characteristic:X5R; Voltage Rating:10V; Capacitor Case Style:0805 [2012 Metric]; Capacitor Terminals:SMD; No. of Pins:2 ;RoHS Compliant: Yes 制造商:TDK CORPORATION OF AMERICA 功能描述:Case:C2012, T.C:X5R, Voltage:1A, Cap Value:225, Tol:M, Thickness:0.85, E series: 3 |
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