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TPS79901-EP View Datasheet(PDF) - Texas Instruments

Part NameTPS79901-EP TI
Texas Instruments TI
Description200-mA, Low-Quiescent Current, Ultra-Low-Noise, High-PSRR Low-Dropout Linear Regulator
TPS79901-EP Datasheet PDF : 27 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
TPS79901-EP
SBVS330A – SEPTEMBER 2017 – REVISED OCTOBER 2017
www.ti.com
Typical Characteristics (continued)
at TJ= –55°C to +125°C, VIN = VOUT(nom) + 0.3 V or 2.7 V, whichever is greater; IOUT = 1 mA, VEN = VIN, COUT = 2.2 μF, CNR =
0.01 μF, and VOUT = 3 V (unless otherwise noted). Typical values are at TJ = 25°C.
200
35
180
30
160
140
25
120
20
100
80
15
60
10
40
5
20
0
0
0.01
0.1
1
10
0
5
10
15
20
25
VOUT = 2.85 V
COUT = 2.2 µF
CNR (nF)
IOUT = 1 mA
VOUT = 2.85 V
CNR = 0.01 µF
COUT (mF)
IOUT = 1 mA
Figure 20. Total Noise vs CNR
Figure 21. Total Noise vs COUT
COUT = 10mF
20mV/div
100mV/div
VOUT
100mV/div
COUT = 2.2mF
VOUT
COUT = 10mF
VOUT
COUT = 2.2mF
20mV/div
VOUT
150mA
1V/div
3.15V
4.15V
dVIN = 1V/ms
dt
100mA/div
VIN
1mA
IOUT
VOUT = 2.85 V
20ms/div
IOUT = 150 mA
Figure 22. Line Transient Response
VIN = 3.35 V
20ms/div
VOUT = 2.85 V
Figure 23. Load Transient Response
1V/div
RLOAD = 19W
COUT = 2.2mF
RLOAD = 19W
COUT = 10mF
VOUT
RLOAD = 19 W
COUT = 2.2 mF
1V/div
RLOAD = 19 W
COUT = 10 mF
VOUT
3.85V
0V
VIN
VEN
4V/div
5V/div
VEN = VIN
10ms/div
VOUT = 2.85 V
Figure 24. Turn-On Response
VIN = 3.85 V
10ms/div
VOUT = 2.85 V
Figure 25. Enable Response
10
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