參數(shù)資料
型號(hào): LT3021-1.5
廠商: Linear Technology Corporation
英文描述: 500mA, Low Voltage, Very Low Dropout Linear Regulator
中文描述: 500mA的,低電壓,非常低壓差線性穩(wěn)壓器
文件頁(yè)數(shù): 7/16頁(yè)
文件大小: 235K
代理商: LT3021-1.5
7
LT3021/LT3021-1.2/
LT3021-1.5/LT3021-1.8
3021fa
TYPICAL PERFOR AU
TEMPERATURE (
°
C)
–50
L
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
V
IN
= 1.15V
V
= 0.5V
*LOAD REGULATION NUMBER REFERS
TO CHANGE IN THE 200mV REFERENCE
VOLTAGE
Input Ripple Rejection
Input Ripple Rejection
Load Regulation
I
L
= 1mA to 500mA
Output Noise Spectral Density
RMS Output Noise vs Load
Current (10Hz to 100kHz)
FREQUENCY (Hz)
10
I
20
30
60
50
40
70
10
1k
10k
1M
3021 G14
0
100
100k
V
IN
= 1.5V + 50mV
RMS
RIPPLE
V
OUT
= 0.5V
I
L
C
OUT
= 4.7
μ
F
C
OUT
= 22
μ
F
TEMPERATURE (
°
C)
–50
I
100
90
80
60
70
50
40
30
20
10
0
3021 G15
25
0
–25
50
75
125
100
V
IN
= 1.5V + 0.5V
P-P
RIPPLE AT 120Hz
V
OUT
= 0.5V
I
L
FREQUENCY (Hz)
10
O
μ
V
H
10
1
0.1
0.01
1k
100k
1M
100
10k
3021 G18
V
OUT
= 1.2V
I
L
C
OUT
= 4.7
μ
F
LOAD CURRENT (mA)
O
μ
V
R
)
300
250
200
150
100
50
0
0.01
1
10
100
3021 G19
0.1
V
OUT
= 1.2V
C
OUT
= 4.7
μ
F
No-Load Recovery Threshold
OUTPUT OVERSHOOT (%)
0
O
18
16
12
14
10
8
6
4
2
0
3021 G20
15
10
5
20
Transient Response
V
50mV/DIV
I
500mA/DIV
50
μ
s/DIV
3021 G21
I
OUT
= 50mA TO 500mA
V
IN
= 1.5V
V
OUT
= 1.2V
C
OUT
= 22
μ
F
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