参数资料
| 型号： | AS1363-BSTT-18 |
| 厂商： | ams |
| 文件页数： | 13/19页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 1.8V .5A SOT23-6 |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 1.8V |
| 输入电压： | 2 V ~ 5.5 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA（最小） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 标准包装 |
| 其它名称： | AS1363-BSTT-18DKR |
AS1363
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
Total Thermal Path Resistance:
R ? JA = R ? JC + R ? CS + R ? SA
Junction Temperature (T J oC) is determined by:
T J = ? PD ? MAX ? ? R ? JA ? + T AMB oC
9.5 Explanation of Steady State Specifications
(EQ 7)
(EQ 8)
9.5.1
Line Regulation
? V IN
Line regulation is defined as the change in output voltage when the input (or line) voltage is changed by a known quantity. It is a measure of the
regulator’s ability to maintain a constant output voltage when the input voltage changes. Line regulation is a measure of the DC open loop gain
of the error amplifier. More generally:
? V OUT
Line Regulation = ---------------- and is a pure number
In practise, line regulation is referred to the regulator output voltage in terms of % / V OUT . This is particularly useful when the same regulator is
available with numerous output voltage trim options.
Line Regulation = ---------------- ? ------------ % / V
? V 100
OUT
? V IN V OUT
(EQ 9)
9.5.2
Load Regulation
Load regulation is defined as the change of the output voltage when the load current is changed by a known quantity. It is a measure of the
regulator’s ability to maintain a constant output voltage when the load changes. Load regulation is a measure of the DC closed loop output
resistance of the regulator. More generally:
? I OUT
? V OUT
Load Regulation = ---------------- and is units of ohms ( ? )
(EQ 10)
In practise, load regulation is referred to the regulator output voltage in terms of % / mA. This is particularly useful when the same regulator is
available with numerous output voltage trim options.
Load Regulation = ---------------- ? ---------------- % / mA
? V 100
OUT
? I OUT ? V OUT
(EQ 11)
9.5.3
Setting Accuracy
Accuracy of the final output voltage is determined by the accuracy of the ratio of R1 and R2, the reference accuracy and the input offset voltage
of the error amplifier. When the regulator is supplied pre-trimmed, the output voltage accuracy is fully defined in the output voltage specification.
When the regulator has a SET terminal, the output voltage may be adjusted externally. In this case, the tolerance of the external resistor network
must be incorporated into the final accuracy calculation. Generally:
V OUT = ? V SET ? ? V SET ? ? 1 + --------------------- ?
R 1 ? ? R 1
? R 2 ? ? R 2 ?
The reference tolerance is given both at 25oC and over the full operating temperature range.
(EQ 12)
9.5.4
Total Accuracy
Away from dropout, total steady state accuracy is the sum of setting accuracy, load regulation and line regulation. Generally:
Total % Accuracy = Setting % Accuracy + Load Regulation % + Line Regulation %
(EQ 13)
www.ams.com/LDO
Revision 1.9
13 - 19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1363-BSTT-18 EB | 制造商:ams 功能描述:Evaluation Board |
| AS1363-BSTT-30 | 功能描述:低压差控制器 - LDO RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
| AS1363-BSTT-30 EB | 制造商:ams 功能描述:Evaluation Board |
| AS1363BSTT33 | 制造商:ams 功能描述:T&R / SOT23-6 |
| AS1363-BSTT-33 | 功能描述:低压差控制器 - LDO RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
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