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參數(shù)資料
| 型號： | TS5215CX5 |
| 廠商： | Taiwan Semiconductor Co., Ltd. |
| 英文描述： | 300mA Low Noise LDO Voltage Regulator with Enable |
| 中文描述： | 300mA的低噪聲LDO穩(wěn)壓器的啟用 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 182K |
| 代理商： | TS5215CX5 |
TS5215 series
5-5
2006/01 rev. C
Application Information (continues)
Thermal Characteristics
TS5215 series is designed to provide 300mA of
continuous current in a very small package. Maximum
power dissipation can be calculated based on the
output current and the voltage drop across the part. To
determine the maximum power dissipation of the
package, use the junction-ambient thermal resistance
of the device and the following basic equation:
Pd(max) = [ Tj(max) – Ta ] /
Θ
ja
Tj(max) is the maximum junction temperature of the
die(125
o
C), and Ta is the ambient operating
temperature.
Θ
ja is layout dependent, the actual power
dissipation of the regulator circuit can be determined
using the equation:
Pd = ( Vin – Vout ) * Iout + Vin * Ignd
Substituting Pd(max) for Pd and solving for the
operating conditions that are critical to the application
will give the maximum operating conditions for the
regulator circuit. For example, when operating the
TS5215CX533 at room temperature with a minimum
footprint layout, the maximum input voltage for a set
output current can be determined as follows:
Pd(max) = (125
o
C – 25
o
C) / 220
o
C/W
Pd(max) = 455mW
The junction to ambient thermal resistance for the
minimum footprint is 220
o
C/W, the maximum power
dissipation must not be exceeded for proper operation.
Using the output voltage of 3.3V and an output current
of 300mA, the maximum input voltage can be
determined. Form the electrical characteristics table,
the maximum ground current for 300mA output current
is 2.5mA.
445mW = ( Vin – 3.3V ) * 300mA + Vin * 2.5mA
445mW = Vin * 300mA – 3.3 * 300mA + Vin * 2.5mA
445mW = Vin * 300mA – 990mW + Vin * 2.5mA
1435mW = Vin * 302.5mA
Vin(max) = 4.74v
Therefore, a 3.3V application at 300mA of output
current can accept a maximum input voltage of 4.74V
in a SOT-25 package.
Fixed Output Regulator Application
Ultra Low Noise Fixed Voltage Application
Includes a 470uF capacitor for low noise operation and
shows EN connected to IN for an application where
enable/shutdown
is
not
minimum.
required.
Cout=
2.2uF
Low Noise Fixed Voltage Application
An example of a low noise configuration where Cbypass
is not required. Cout= 1uF minimum
Reference Voltage Output Application
An example of reference voltage (1.23V) as the output
voltage when adjustable pin connect to output.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TS5215CY5 | 300mA Low Noise LDO Voltage Regulator with Enable |
| TS522 | PRECISION LOW NOISE DUAL OPERATIONAL AMPLIFIERS |
| TS522D | PRECISION LOW NOISE DUAL OPERATIONAL AMPLIFIERS |
| TS522I | PRECISION LOW NOISE DUAL OPERATIONAL AMPLIFIERS |
| TS522IN | PRECISION LOW NOISE DUAL OPERATIONAL AMPLIFIERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS5215CX5 RF | 制造商:SKMI/Taiwan 功能描述:300MA LOW NOISE LDO VOLTAGE REGULATOR WITH ENABLE |
| TS5215CX525 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA Low Noise LDO Vltg Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TS5215CX525 RF | 制造商:SKMI/Taiwan 功能描述:300MA LOW NOISE LDO VOLTAGE REGULATOR WITH ENABLE |
| TS5215CX530 RF | 制造商:SKMI/Taiwan 功能描述:SOT-25;300MA LOW NOISE LDO VOL |
| TS5215CX533 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA Low Noise LDO Vltg Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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