參數(shù)資料
型號(hào): AS1358-BTTT-25
廠商: AUSTRIAMICROSYSTEMS AG
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: 150mA 9μVrms, 92dB - LDO; Package Type: TSOT23-5; Output Range: 2.5V
封裝: TSOT23-5
文件頁(yè)數(shù): 9/16頁(yè)
文件大?。?/td> 900K
代理商: AS1358-BTTT-25
www.austriamicrosystems.com
Revision 1.5
9 - 16
AS1358 / AS1359
Datasheet - Application Information
9 Application Information
9.1 Dropout Voltage
Dropout is the input to output voltage difference, below which the linear regulator ceases to regulate. At this point, the output voltage change
follows the input voltage change. Dropout voltage may be measured at different currents and, in particular at the regulator maximum one. From
this is obtained the MOSFET maximum series resistance over temperature etc. More generally:
(EQ 1)
Dropout is probably the most important specification when the regulator is used in a battery application. The dropout performance of the
regulator defines the useful “end of life” of the battery before replacement or re-charge is required.
Figure 19. Graphical Representation of Dropout Voltage
Figure 19
shows the variation of V
OUT
as V
IN
is varied for a certain load current. The practical value of dropout is the differential voltage (V
OUT
-
V
IN
) measured at the point where the LDO output voltage has fallen by 100mV below the nominal, fully regulated output value. The nominal
regulated output voltage of the LDO is that obtained when there is 500mV (or greater) input-output voltage differential.
9.2 Efficiency
Low quiescent current and low input-output voltage differential are important in battery applications amongst others, as the regulator efficiency is
directly related to quiescent current and dropout voltage. Efficiency is given by:
Efficiency =
%
(EQ 2)
Where:
I
Q
= Quiescent current of LDO
V
DROPOUT
I
LOAD
R
SERIES
=
Dropout
Voltage
100mV
V
IN
V
OUT
V
OUT
V
IN
V
OUT
V
IN
= V
OUT(TYP)
+ 0.5V
V
IN
V
V
IN
I
Q
LOAD
I
LOAD
+
------------------------I
100
相關(guān)PDF資料
PDF描述
AS1358-BTTT-26 150mA 9μVrms, 92dB - LDO; Package Type: TSOT23-5; Output Range: 2.6V
AS1358-BTTT-27 150mA 9μVrms, 92dB - LDO; Package Type: TSOT23-5; Output Range: 2.7V
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AS1358-BTTT-26 功能描述:IC REG LDO 2.6V .15A TSOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正,固定式 輸出電壓:2.5V 輸入電壓:2.5 V ~ 5.5 V 電壓 - 壓降(標(biāo)準(zhǔn)):- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:300mA(最小值) 電流 - 限制(最?。?360mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型,TSOT-23-5 供應(yīng)商設(shè)備封裝:TSOT-23-5 包裝:帶卷 (TR)
AS1358-BTTT-27 功能描述:IC REG LDO 2.7V .15A TSOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正,固定式 輸出電壓:2.5V 輸入電壓:2.5 V ~ 5.5 V 電壓 - 壓降(標(biāo)準(zhǔn)):- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:300mA(最小值) 電流 - 限制(最小):360mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型,TSOT-23-5 供應(yīng)商設(shè)備封裝:TSOT-23-5 包裝:帶卷 (TR)
AS1358-BTTT-28 功能描述:IC REG LDO 2.8V .15A TSOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正,固定式 輸出電壓:3.3V 輸入電壓:4.7 V ~ 15 V 電壓 - 壓降(標(biāo)準(zhǔn)):1.2V @ 800mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:800mA(最小值) 電流 - 限制(最?。?800mA 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-252-3,DPak(2 引線+接片),SC-63 供應(yīng)商設(shè)備封裝:PowerFlex/TO-252 包裝:剪切帶 (CT) 其它名稱:296-31967-1
AS1358-BTTT-285 功能描述:IC REG LDO 2.85V .15A TSOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正,固定式 輸出電壓:2.5V 輸入電壓:2.5 V ~ 5.5 V 電壓 - 壓降(標(biāo)準(zhǔn)):- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:300mA(最小值) 電流 - 限制(最?。?360mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型,TSOT-23-5 供應(yīng)商設(shè)備封裝:TSOT-23-5 包裝:帶卷 (TR)
AS1358-BTTT-30 功能描述:IC REG LDO 3V .15A TSOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正,固定式 輸出電壓:2.5V 輸入電壓:2.5 V ~ 5.5 V 電壓 - 壓降(標(biāo)準(zhǔn)):- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:300mA(最小值) 電流 - 限制(最小):360mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型,TSOT-23-5 供應(yīng)商設(shè)備封裝:TSOT-23-5 包裝:帶卷 (TR)