參數(shù)資料
型號(hào)： LT3010EMS8E
廠商： LINEAR TECHNOLOGY CORP
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 50mA, 3V to 80V Low Dropout Micropower Linear Regulator
中文描述： 1.275 V-60 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.55 V DROPOUT, PDSO8
封裝： PLASTIC, MSOP-8
文件頁(yè)數(shù)： 8/16頁(yè)
文件大?。?/td> 244K
代理商： LT3010EMS8E
8
LT3010/LT3010-5
3010f
The LT3010 is a 50mA high voltage low dropout regulator
with micropower quiescent current and shutdown. The
device is capable of supplying 50mA at a dropout voltage
of 300mV. The low operating quiescent current (30
μ
A)
drops to 1
μ
A in shutdown. In addition to the low quiescent
current, the LT3010 incorporates several protection fea-
tures which make it ideal for use in battery-powered
systems. The device is protected against both reverse
input and reverse output voltages. In battery backup
applications where the output can be held up by a backup
battery when the input is pulled to ground, the LT3010 acts
like it has a diode in series with its output and prevents
reverse current flow.
Adjustable Operation
The adjustable version of the LT3010 has an output
voltage range of 1.275V to 60V. The output voltage is set
by the ratio of two external resistors as shown in Figure2.
The device servos the output to maintain the voltage at
the adjust pin at 1.275V referenced to ground. The
current in R1 is then equal to 1.275V/R1 and the current
in R2 is the current in R1 plus the ADJ pin bias current.
The ADJ pin bias current, 50nA at 25
°
C, flows through R2
into the ADJ pin. The output voltage can be calculated
using the formula in Figure 2. The value of R1 should be
less than 250k to minimize errors in the output voltage
caused by the ADJ pin bias current. Note that in shut-
down the output is turned off and the divider current will
be zero.
APPLICATIOU
W
U
U
Figure 2. Adjustable Operation
A small capacitor (C1) placed in parallel with the top
resistor (R2) of the output divider is necessary for stability
and transient performance of the adjustable LT3010. The
impedance of C1 at 10kHz should be less than the value of
R1.
The adjustable device is tested and specified with the ADJ
pin tied to the OUT pin and a 5
μ
A DC load (unless otherwise
specified) for an output voltage of 1.275V. Specifications
for output voltages greater than 1.275V will be propor-
tional to the ratio of the desired output voltage to 1.275V;
(V
OUT
/1.275V). For example, load regulation for an
output current change of 1mA to 50mA is –10mV typical
at V
OUT
= 1.275V. At V
OUT
= 12V, load regulation is:
(12V/1.275V) (–10mV) = –94mV
Output Capacitance and Transient Response
The LT3010 is designed to be stable with a wide range of
output capacitors. The ESR of the output capacitor affects
stability, most notably with small capacitors. A minimum
output capacitor of 1
μ
F with an ESR of 3
or less is
recommended to prevent oscillations. The LT3010 is a
micropower device and output transient response will be
a function of output capacitance. Larger values of output
capacitance decrease the peak deviations and provide
improved transient response for larger load current
changes. Bypass capacitors, used to decouple individual
components powered by the LT3010, will increase the
effective output capacitor value.
IN
LT3010
V
IN
OUT
ADJ
GND
3010 F02
V
OUT
R2
C1
R1
+
R2
R1
V
OUT
= 1.275V
V
ADJ
= 1.275V
I
= 50nA AT 25
°
C
OUTPUT RANGE = 1.275V TO 60V
+ (I
ADJ
)(R2)
1 +
(
)
相關(guān)PDF資料
PDF描述
LT3010EMS8E-5 50mA, 3V to 80V Low Dropout Micropower Linear Regulator
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LT3021ES8-1.2 500mA, Low Voltage, Very Low Dropout Linear Regulator
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT3010EMS8E#PBF 功能描述:IC REG LDO ADJ 50MA 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓(xùn)模塊:MIC5365/66 Ultra-small LDO Regulators 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:3V 輸入電壓:最高 5.5V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.155V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?200mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:4-UDFN 裸露焊盤(pán)，4-TMLF? 供應(yīng)商設(shè)備封裝:4-TMLF?（1x1） 包裝:Digi-Reel® 其它名稱:576-3192-6
LT3010EMS8E#TR 功能描述:IC REG LDO ADJ 50MA 8-MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標(biāo)準(zhǔn)包裝:50 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:最高 15V 電壓 - 壓降（標(biāo)準(zhǔn)）:1.1V @ 800mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:800mA 電流 - 限制（最小）:800mA 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-263-4，D²Pak（3 引線+接片），TO-263AA 供應(yīng)商設(shè)備封裝:D2PAK-3 包裝:管件
LT3010EMS8E#TRPBF 功能描述:IC REG LDO ADJ 50MA 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標(biāo)準(zhǔn)包裝:50 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:最高 15V 電壓 - 壓降（標(biāo)準(zhǔn)）:1.1V @ 800mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:800mA 電流 - 限制（最小）:800mA 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-263-4，D²Pak（3 引線+接片），TO-263AA 供應(yīng)商設(shè)備封裝:D2PAK-3 包裝:管件
LT3010EMS8E-5 功能描述:IC REG LDO 5V 50MA 8-MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標(biāo)準(zhǔn)包裝:50 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:最高 15V 電壓 - 壓降（標(biāo)準(zhǔn)）:1.1V @ 800mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:800mA 電流 - 限制（最小）:800mA 工作溫度:0°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-263-4，D²Pak（3 引線+接片），TO-263AA 供應(yīng)商設(shè)備封裝:D2PAK-3 包裝:管件
LT3010EMS8E-5#PBF 功能描述:IC REG LDO 5V 50MA 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓(xùn)模塊:MIC5365/66 Ultra-small LDO Regulators 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:3V 輸入電壓:最高 5.5V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.155V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最小）:200mA 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:4-UDFN 裸露焊盤(pán)，4-TMLF? 供應(yīng)商設(shè)備封裝:4-TMLF?（1x1） 包裝:Digi-Reel® 其它名稱:576-3192-6
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