參數(shù)資料
型號(hào)： LT3060EDC#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器
英文描述： FIXED POSITIVE LDO REGULATOR, PDSO8
封裝： 2 X 2 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, DFN-8
文件頁(yè)數(shù)： 3/20頁(yè)
文件大?。?/td> 277K
代理商： LT3060EDC#PBF
LT3060
11
3060f
TheLT3060isamicropower,lownoise,lowdropoutvoltage,
100mA linear regulator with micropower shutdown. The
device supplies up to 100mA at a typical dropout voltage
of 300mV and operates over a 1.6V to 45V input range.
A single external capacitor can provide programmable
low noise reference performance and output soft-start
functionality. For example, connecting a 10nF capacitor
from the REF/BYP pin to GND lowers output noise to
30μVRMS over a 10Hz to 100kHz bandwidth. This capacitor
also soft-starts the reference and prevents output voltage
overshoot at turn-on.
The LT3060’s quiescent current is merely 40μA but provides
fast transient response with a minimum low ESR 2.2μF
ceramic output capacitor. In shutdown, quiescent current
is less than 1μA and the reference soft-start capacitor is
reset.
The LT3060 optimizes stability and transient response
with low ESR, ceramic output capacitors. The regulator
does not require the addition of ESR as is common with
other regulators. The LT3060 typically provides 0.1% line
regulation and 0.03% load regulation.
Internal protection circuitry includes reverse-battery
protection, reverse-output protection, reverse-current
protection, current limit with foldback and thermal
shutdown.
This “bullet-proof” protection set makes it ideal for use in
battery-powered systems. In battery backup applications
where the output is held up by a backup battery and the
input is pulled to ground, the LT3060 acts like it has a
diode in series with its output and prevents reverse current
ow. Additionally, in dual supply applications where the
regulator load is returned to a negative supply, the output
can be pulled below ground by as much as 45V and the
device still starts normally and operates.
Adjustable Operation
TheLT3060hasanoutputvoltagerangeof0.6Vto44.5V.The
output voltage is set by the ratio of two external resistors,
as shown in Figure 1. The device servos the output to
maintain the ADJ pin voltage at 0.6V referenced to ground.
The current in R1 is then equal to 0.6V/R1, and the current
in R2 is the current in R1 minus the ADJ pin bias current.
APPLICATIONS INFORMATION
3060 F01
IN
SHDN
OUT
ADJ
GND REF/BYP
LT3060
VIN
VOUT
R2
R1
Figure 1. Adjustable Operation
VV
R
IR
VV
I
OUT
ADJ
AD
=+
()
=
06
1
2
1
2
06
.–
.
JJ
nA at
C
OUTPUT RANGE
V to
V
=
15
25
0 6
44 5
..
The ADJ pin bias current, 15nA at 25C, ows from the
ADJ pin through R1 to GND. Calculate the output voltage
using the formula in Figure 1. The value of R1 should be no
greater than 124k to provide a minimum 5μA load current
so that errors in the output voltage, caused by the ADJ
pin bias current, are minimized. Note that in shutdown,
the output is turned off and the divider current is zero.
Curves of ADJ Pin Voltage vs Temperature and ADJ Pin Bias
Current vs Temperature appear in the Typical Performance
Characteristics Section.
The LT3060 is tested and specied with the ADJ pin tied
to the OUT pin, yielding VOUT = 0.6V. Specications for
output voltages greater than 0.6V are proportional to the
ratio of the desired output voltage to 0.6V:VOUT/0.6V. For
example, load regulation for an output current change
of 1mA to 100mA is 0.2mV (typical) at VOUT = 0.6V. At
VOUT = 12V, load regulation is:
12
06
02
4
V
mV
.
(.
)
=
Table 1 shows 1% resistor divider values for some common
output voltages with a resistor divider current of 5μA.
Table 1. Output Voltage Resistor Divider Values
VOUT
(V)
R1
(k Ω)
R2
(k Ω)
1.2
118
1.5
121
182
1.8
124
249
2.5
115
365
3
124
499
3.3
124
562
5
115
845
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT3060EDCTR 制造商:LINER 制造商全稱:Linear Technology 功能描述:45V VIN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator
LT3060EDCTRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:45V VIN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator
LT3060ETS8 制造商:LINER 制造商全稱:Linear Technology 功能描述:45V VIN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator
LT3060ETS8#PBF 制造商:Linear Technology 功能描述:IC ADJ LDO REG 0.6V TO 44.5V 0.1A TSOT-8; Primary Input Voltage:45V; Dropout Voltage Vdo:300mV; No. of Pins:8; Output Current:100mA; Operating Temperature Min:-40C; Operating Temperature Max:125C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes
LT3060ETS8#TRMPBF 功能描述:IC REG LDO ADJ .1A 8TSOT 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，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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