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LT3021 데이터시트(PDF) 7 Page - Linear Technology

부품명 LT3021
상세설명  500mA, Low Voltage, Very Low Dropout Linear Regulator
PDF  16 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LT3021 데이터시트(HTML) 7 Page - Linear Technology

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LT3021/LT3021-1.2/
LT3021-1.5/LT3021-1.8
3021fa
TYPICAL PERFOR A CE CHARACTERISTICS
TEMPERATURE (
°C)
–50
2.5
2.0
1.5
0.5
1.0
0
–0.5
–1.0
–1.5
–2.0
–2.5
3021 G17
25
0
–25
50
75
125
100
VIN = 1.15V
VOUT = 0.5V
*LOAD REGULATION NUMBER REFERS
TO CHANGE IN THE 200mV REFERENCE
VOLTAGE
Input Ripple Rejection
Input Ripple Rejection
Load Regulation
∆IL = 1mA to 500mA
Output Noise Spectral Density
RMS Output Noise vs Load
Current (10Hz to 100kHz)
FREQUENCY (Hz)
10
20
30
60
50
40
70
10
1k
10k
1M
3021 G14
0
100
100k
VIN = 1.5V + 50mVRMS RIPPLE
VOUT = 0.5V
IL = 500mA
COUT = 4.7µF
COUT = 22µF
TEMPERATURE (
°C)
–50
100
90
80
60
70
50
40
30
20
10
0
3021 G15
25
0
–25
50
75
125
100
VIN = 1.5V + 0.5VP-P RIPPLE AT 120Hz
VOUT = 0.5V
IL = 500mA
FREQUENCY (Hz)
10
10
1
0.1
0.01
1k
100k
1M
100
10k
3021 G18
VOUT = 1.2V
IL = 500mA
COUT = 4.7µF
LOAD CURRENT (mA)
300
250
200
150
100
50
0
0.01
1
10
100
3021 G19
0.1
VOUT = 1.2V
COUT = 4.7µF
No-Load Recovery Threshold
OUTPUT OVERSHOOT (%)
0
18
16
12
14
10
8
6
4
2
0
3021 G20
15
10
5
20
Transient Response
VOUT
50mV/DIV
IOUT
500mA/DIV
50
µs/DIV
3021 G21
IOUT = 50mA TO 500mA
VIN = 1.5V
VOUT = 1.2V
COUT = 22µF



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