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参数资料
| 型号： | TPS75101QPWPRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 可调正电压单路输出LDO稳压器 |
| 英文描述： | 1.5 V-5 V ADJUSTABLE POSITIVE LDO REGULATOR, PDSO20 |
| 封装： | PLASTIC, HTSSOP-20 |
| 文件页数： | 8/30页 |
| 文件大小： | 625K |
| 代理商： | TPS75101QPWPRQ1 |
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TPS75101Q1, '75115Q1, '75118Q1, '75125Q1, '75133Q1 WITH POWER GOOD
TPS75301Q1, TPS75315Q1, TPS75318Q1, TPS75325Q1, TPS75333Q1 WITH RESET
FAST TRANSIENT RESPONSE 1.5A LOW DROPOUT VOLTAGE REGULATORS
SGLS159A APRIL 2003 REVISED APRIL 2008
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
output capacitor
As with most LDO regulators, the TPS751xxQ and TPS753xxQ require an output capacitor connected between
OUT and GND to stabilize the internal control loop. The minimum recommended capacitance value is 47
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.
RESR
LESL
C
Figure 21. ESR and ESL
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| TPSMC10A/7 | 1500 W, UNIDIRECTIONAL, SILICON, TVS DIODE, DO-214AB |
| TPSMC43A/7 | 1500 W, UNIDIRECTIONAL, SILICON, TVS DIODE, DO-214AB |
| TPSMC6.8A/7 | 1500 W, UNIDIRECTIONAL, SILICON, TVS DIODE, DO-214AB |
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| TPS75105DSKT | 功能描述:LED照明驱动器 LDO,Two-Bank LED Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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