參數(shù)資料
型號: TAR5S26
廠商: Toshiba Corporation
英文描述: Point Regulators (Low-Dropout Regulator)
中文描述: 點穩(wěn)壓器(低壓差穩(wěn)壓器)
文件頁數(shù): 6/23頁
文件大?。?/td> 391K
代理商: TAR5S26
TAR5S15~TAR5S50
2007-11-01
6
3. Ripple Rejection
The devices of the TAR5Sxx Series feature a circuit with an excellent ripple rejection characteristic. Because
the circuit also features an excellent output fluctuation characteristic for sudden supply voltage drops, the
circuit is ideal for use in the RF blocks incorporated in all mobile telephones.
4. NOISE Pin
TAR5Sxx Series devices incorporate a NOISE pin to reduce output noise voltage. Inserting a capacitor
between the NOISE pin and GND reduces output noise. To ensure stable operation, insert a capacitor of
0.0047
μ
F or more between the NOISE pin and GND.
The output voltage rise time varies according to the capacitance of the capacitor connected to the NOISE
pin.
Ripple Rejection
f
TAR5S28 Input Transient Response
Frequency f (Hz)
Time t (ms)
R
0
10
100
1 k
10 k
100 k 300 k
10
20
30
40
50
60
70
80
10
μ
F
2.2
μ
F
1
μ
F
VIN
=
4.0 V, CNOISE
=
0.01
μ
F,
CIN
=
1
μ
F, Vripple
=
500 mVp
p,
Iout
=
10 mA, Ta
=
25°C
C
NOISE
V
N
Turn On Waveform
NOISE capacitance CNOISE (F)
Time t (ms)
C
V
C
O
μ
V
0
10
20
30
40
50
60
0.001
μ
0.01
μ
1.0
μ
TAR5S50
0.1
μ
TAR5S30
TAR5S15
CIN
=
1
μ
F, Cout
=
10
μ
F,
Iout
=
10 mA, Ta
=
25°C
O
V
0
1
4
5
8
10
Input voltage
2.8 V
2
3
6
7
9
Output voltage
3.1 V
3.4 V
Ta
=
25°C, CIN
=
1
μ
F,
Cout
=
10
μ
F, CNOISE
=
0.01
μ
F,
VIN: 3.4 V
3.1 V, Iout
=
50 mA
40
10
20
0
10
1
2
3
1
2
0
90
30
0
60
50
80
70
Output voltage waveform
Control voltage waveform
CNOISE
=
0.01
μ
F
1
μ
F
0.33
μ
F
0.1
μ
F
CIN
=
1
μ
F, Cout
=
10
μ
F,
Iout
=
50 mA, Ta
=
25°C
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