參數(shù)資料
型號(hào)： TPS79350
廠商： Texas Instruments, Inc.
英文描述： ULTRALOW-NOISE, HIGH PSRR, FAST RF 200-mA LOW-DROPOUT LINEAR REGULATORS(超低噪聲,200mA低壓差線性穩(wěn)壓器)
中文描述： 超低噪聲，高PSRR，快速射頻200毫安低壓差線性穩(wěn)壓器（超低噪聲，200mA的低壓差線性穩(wěn)壓器）
文件頁(yè)數(shù)： 6/14頁(yè)
文件大小： 267K
代理商： TPS79350
TPS79301, TPS79318, TPS79325
TPS79328, TPS793285, TPS79330
TPS79333, TPS793475
SLVS348C
–
JULY 2001
–
REVISED APRIL 2002
6
www.ti.com
TYPICAL CHARACTERISTICS
Figure 1
2.795
2.796
2.797
2.798
2.799
2.8
2.801
2.802
2.803
2.804
2.805
0
50
100
150
200
IO
–
Output Current
–
mA
TPS79328
OUTPUT VOLTAGE
vs
OUTPUT CURRENT
VI = 3.8 V
Co = 10
μ
F
TJ = 25
°
C
–
–
VO
Figure 2
2.775
2.78
2.785
2.79
2.795
2.8
2.805
–
40
–
25
–
10 5
20 35 50 65 80 95 110 125
TJ
–
Junction Temperature
–
°
C
TPS79328
OUTPUT VOLTAGE
vs
JUNCTION TEMPERATURE
–
–
VO
IO = 200 mA
IO = 1 mA
VI = 3.8 V
Co = 10
μ
F
Figure 3
0
50
100
150
200
250
–
40
–
25
–
10 5
20 35 50 65 80 95 110 125
TJ
–
Junction Temperature
–
°
C
TPS79328
GROUND CURRENT
vs
JUNCTION TEMPERATURE
G
–
A
μ
IO = 1 mA
VI = 3.8 V
Co = 10
μ
F
IO = 200 mA
Figure 4
0
0.05
0.1
0.15
0.2
0.25
0.3
100
1 k
10 k
100 k
f
–
Frequency
–
Hz
IO = 1 mA
VI = 3.8 V
Co = 2.2
μ
F
C(byp) = 0.1
μ
F
IO = 200 mA
TPS79328
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
V
O
–
μ
H
Figure 5
0
0.05
0.1
0.15
0.2
0.25
0.3
100
1 k
10 k
100 k
V
O
–
μ
H
f
–
Frequency
–
Hz
IO = 1 mA
IO = 200 mA
TPS79328
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
VI = 3.8 V
Co = 10
μ
F
C(byp) = 0.1
μ
F
Figure 6
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
100
1 k
10 k
100 k
f
–
Frequency
–
Hz
V
μ
H
O
–
TPS79328
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
VI = 3.8 V
IO = 200 mA
Co= 10
μ
F
C(byp) = 0.1
μ
F
C(byp) = 0.001
μ
F
C(byp) = 0.0047
μ
F
C(byp) = 0.01
μ
F
Figure 7
0.001
0.01
0.1
R
–
–
ROOT MEAN SQUARED OUTPUT NOISE
vs
BYPASS CAPACITANCE
60
(
V
μ
C(byp)
–
Bypass Capacitance
–
μ
F
0
10
20
30
40
50
VO = 2.8 V
IO = 200 mA
Co = 10
μ
F
BW = 100 Hz to 100 kHz
Figure 8
100
1 M
10
1 k
f
–
Frequency
–
Hz
10 k
–
–
Z
OUTPUT IMPEDANCE
vs
FREQUENCY
100 k
IO = 1 mA
0
0.5
1
1.5
2
2.5
IO = 100 mA
10 M
VI = 3.8 V
Co = 10
μ
F
TJ = 25
°
C
0
–
40
–
25
–
10 5
20
40
60
80
100
120
140
160
180
20 35 50 65 80 95 110 125
TJ
–
Junction Temperature
–
°
C
Figure 9
IO = 200 mA
IO = 10 mA
VI = 2.7 V
Co = 10
μ
F
–
–
VD
TPS79328
DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
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