參數(shù)資料
型號: LT3023
廠商: Linear Technology Corporation
英文描述: Dual 100mA, Low Dropout, Low Noise, Micropower Regulator
中文描述: 雙100mA的電流,低壓差,低噪聲,微功耗穩(wěn)壓器
文件頁數(shù): 13/16頁
文件大?。?/td> 581K
代理商: LT3023
13
LT3023
3023f
In circuits where a backup battery is required, several
different input/output conditions can occur. The output
voltage may be held up while the input is either pulled to
ground, pulled to some intermediate voltage or is left open
circuit. Current flow back into the output will follow the
curve shown in Figure 6.
When the IN pin of the LT3023 is forced below the OUT1
or OUT2 pins or the OUT1/OUT2 pins are pulled above the
IN pin, input current will typically drop to less than 2
μ
A.
This can happen if the input of the device is connected to
a discharged (low voltage) battery and the output is held
up by either a backup battery or a second regulator circuit.
The state of the SHDN1/SHDN2 pins will have no effect on
the reverse output current when the output is pulled above
the input.
Figure 6. Reverse Output Current
APPLICATIOU
W
U
U
OUTPUT VOLTAGE (V)
100
90
80
760
60
50
40
30
20
10
0
R
μ
A
3023 F06
0
1
2
3
4
5
6
7
8
9
10
T
A
= 25
°
C
V
IN
= 0V
V
= V
CURRENT FLOWS
INTO OUTPUT PIN
TYPICAL APPLICATIO S
OUT1
BYP1
ADJ1
OUT2
BYP2
ADJ2
IN
SHDN1
SHDN2
LT3023
1
μ
F
V
3.7V TO 20V
OFF ON
0.01
μ
F
0.01
μ
F
422k
261k
249k
249k
10
μ
F
10
μ
F
3023 TA02a
3.3V
AT 100mA
2.5V
AT 100mA
GND
V
SHDN1/SHDN2
V
OUT1
1V/DIV
V
1V/DIV
2ms/DIV
3023 TA02b
C
BYP
(pF)
10
0.1
S
1
10
100
100
1000
10000
3023 TA02c
Noise Bypassing Slows Startup, Allows Outputs to Track
Startup Time
相關(guān)PDF資料
PDF描述
LT3023EDD Dual 100mA, Low Dropout, Low Noise, Micropower Regulator
LT3023EMSE Dual 100mA, Low Dropout, Low Noise, Micropower Regulator
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LT3024EDE Dual 100mA/500mA Low Dropout, Low Noise, Micropower Regulator
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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