參數(shù)資料
型號(hào)： AS1364-BTDT-AD
廠商： AUSTRIAMICROSYSTEMS AG
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 1A LDO, Low Noise
文件頁(yè)數(shù)： 13/19頁(yè)
文件大?。?/td> 787K
代理商： AS1364-BTDT-AD
AS1364
Datasheet - Application Information
www.austriamicrosystems.com
Revision 1.8
13 - 19
Total Thermal Path Resistance:
(EQ 8)
Junction Temperature (T
J
oC) is determined by:
oC
(EQ 9)
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
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 10)
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 11)
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 12)
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:
(EQ 13)
The reference tolerance is given both at 25oC and over the full operating temperature range.
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 14)
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
V
OUT
V
SET
V
SET
=
1
1
R
1
R
2
R
2
R
+
相關(guān)PDF資料
PDF描述
AS1367-BTDT-12 Adaptive LDO
AS1367-BTDT-18 Adaptive LDO
AS1367-BTDT-30 Adaptive LDO
AS1367-BTDT-33 Adaptive LDO
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AS1364-BTDT-AD EB 制造商:ams 功能描述:Evaluation Board
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AS1364-TD-45_EK_ST 功能描述:AS1364 1 - Single Channels per IC Positive Fixed Linear Voltage Regulator Evaluation Board 制造商:ams 系列:- 零件狀態(tài):有效 每 IC 通道數(shù):1 - 單 電壓 - 輸出:4.5V 電流 - 輸出:1A 電壓 - 輸入:2 V ~ 5.5 V 穩(wěn)壓器類型:正，固定式 工作溫度:-40°C ~ 85°C 板類型:完全填充 所含物品:板 使用的 IC/零件:AS1364 標(biāo)準(zhǔn)包裝:1
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