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| 型号： | AS1358-BTTT-27 |
| 厂商： | AUSTRIAMICROSYSTEMS AG |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 150mA 9μVrms, 92dB - LDO; Package Type: TSOT23-5; Output Range: 2.7V |
| 封装： | TSOT23-5 |
| 文件页数： | 11/16页 |
| 文件大小： | 900K |
| 代理商： | AS1358-BTTT-27 |
www.austriamicrosystems.com
Revision 1.5
11 - 16
AS1358 / AS1359
Datasheet - Application Information
Total Thermal Path Resistance:
(EQ 6)
Junction Temperature (T
J
oC) is determined by:
oC
(EQ 7)
9.5 Explanation of Steady State Specifications
9.5.1 Line Regulation
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:
Line Regulation =
and is a pure number
(EQ 8)
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
(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:
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
(EQ 11)
9.5.3 Setting Accuracy
The regulator is supplied pre-trimmed, so that the output voltage accuracy is fully defined in the output voltage specification.
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 12)
9.6 Explanation of Dynamic Specifications
9.6.1 Power Supply Rejection Ratio (PSRR)
Known also as Ripple Rejection, this specification measures the ability of the regulator to reject noise and ripple beyond DC. PSRR is a
summation of the individual rejections of the error amplifier, reference and AC leakage through the series pass transistor. The specification, in
the form of a typical attenuation plot with respect to frequency, shows up the gain bandwidth compromises forced upon the designer in low
quiescent current conditions. Generally:
PSSR =
dB using lower case to indicate AC values
(EQ 13)
Power supply rejection ratio is fixed by the internal design of the regulator. Additional rejection must be provided externally.
R
JA
R
JC
R
CS
R
SA
+
+
=
T
J
PD
MAX
R
JA
T
AMB
+
=
V
V
IN
----------------
V
V
IN
----------------
V
OUT
--100
V
I
OUT
----------------
V
I
OUT
----------------
V
OUT
---100
20
Log
V
V
IN
---------------
相关PDF资料 |
PDF描述 |
|---|---|
| AS1358-BTTT-28 | 150mA 9μVrms, 92dB - LDO; Package Type: TSOT23-5; Output Range: 2.8V |
| AS1358-BTTT-285 | 150mA 9μVrms, 92dB - LDO; Package Type: TSOT23-5; Output Range: 2.85V |
| AS1358-BTTT-30 | 150mA 9μVrms, 92dB - LDO; Package Type: TSOT23-5; Output Range: 3.0V |
| AS1358-BTTT-33 | 150mA 9μVrms, 92dB - LDO; Package Type: TSOT23-5; Output Range: 3.3V |
| AS1358-BTTT-45 | 150mA 9μVrms, 92dB - LDO; Package Type: TSOT23-5; Output Range: 4.5V |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1358-BTTT-28 | 功能描述:IC REG LDO 2.8V .15A TSOT23-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.3V 输入电压:4.7 V ~ 15 V 电压 - 压降（标准）:1.2V @ 800mA 稳压器数量:1 电流 - 输出:800mA（最小值） 电流 - 限制（最小）:800mA 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-252-3，DPak（2 引线+接片），SC-63 供应商设备封装:PowerFlex/TO-252 包装:剪切带 (CT) 其它名称:296-31967-1 |
| AS1358-BTTT-285 | 功能描述:IC REG LDO 2.85V .15A TSOT23-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:300mA（最小值） 电流 - 限制（最小）:360mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR) |
| AS1358-BTTT-30 | 功能描述:IC REG LDO 3V .15A TSOT23-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:300mA（最小值） 电流 - 限制（最小）:360mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR) |
| AS1358-BTTT-33 | 功能描述:IC REG LDO 3.3V .15A TSOT23-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:300mA（最小值） 电流 - 限制（最小）:360mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR) |
| AS1358-BTTT-45 | 功能描述:IC REG LDO 4.5V .15A TSOT23-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.3V 输入电压:4.7 V ~ 15 V 电压 - 压降（标准）:1.2V @ 800mA 稳压器数量:1 电流 - 输出:800mA（最小值） 电流 - 限制（最小）:800mA 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-252-3，DPak（2 引线+接片），SC-63 供应商设备封装:PowerFlex/TO-252 包装:剪切带 (CT) 其它名称:296-31967-1 |
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