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参数资料
| 型号： | 75433-EP |
| 厂商： | Texas Instruments, Inc. |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | POWER GOOD FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS |
| 中文描述： | 电源良好快速瞬态响应2 -低压差电压调节器 |
| 文件页数： | 16/27页 |
| 文件大小： | 388K |
| 代理商： | 75433-EP |
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TPS75201-EP TPS75215-EP TPS75218-EP TPS75225-EP TPS75233-EP WITH RESET
TPS75401-EP
’
75415-EP
’
75418-EP
’
75425-EP
’
75433-EP WITH POWER GOOD
FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS
SGLS165
–
APRIL 2003
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
output capacitor
As with most LDO regulators, the TPS752xx and TPS754xx require an output capacitor connected between OUT
and GND to stabilize the internal control loop. The minimum recommended capacitance value is 47
μ
F and the ESR
(equivalent series resistance) must be between 100 m
and 10
. Solid tantalum electrolytic, aluminum electrolytic,
and multilayer ceramic capacitors are all suitable, provided they meet the requirements described in this section.
Larger capacitors provide a wider range of stability and better load transient response.
This information, along with the ESR graphs, is included to assist in selection of suitable capacitance for the user
’
s
application. When necessary to achieve low height requirements along with high output current and/or high load
capacitance, several higher ESR capacitors can be used in parallel to meet these guidelines.
ESR and transient response
LDOs typically require an external output capacitor for stability. In fast transient response applications, capacitors
are used to support the load current while LDO amplifier is responding. In most applications, one capacitor is used
to support both functions.
Besides its capacitance, every capacitor also contains parasitic impedances. These parasitic impedances are
resistive as well as inductive. The resistive impedance is called equivalent series resistance (ESR), and the
inductive impedance is called equivalent series inductance (ESL). The equivalent schematic diagram of any
capacitor can therefore be drawn as shown in Figure 21.
R
ESR
L
ESL
C
Figure 21. ESR and ESL
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 75434-0006 | 制造商:MOLEX 功能描述:GBX BACKPLANE 3 PAIR 25 C |
| 75434-0007 | 制造商:MOLEX 功能描述:GBX BACKPLANE 3 PAIR 25 C |
| 75434-0022 | 制造商:MOLEX 功能描述:GBX BACKPLANE 3 PAIR 25 C |
| 75434-0023 | 制造商:MOLEX 功能描述:GBX 3 PAIR 10 COLUMN OPEN BACKPLANE ASSY |
| 75434-0024 | 制造商:MOLEX 功能描述:GBX 3 PAIR BPLANE CUSTUM 25 COL OPEN END |
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