TPS730_15 Datasheet, PDF (7/31 Pages) Texas Instruments – TPS730 Low-Noise, High PSRR, RF, 200-mA Low-Dropout Linear Regulators

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TPS730
SBVS054J – NOVEMBER 2004 – REVISED APRIL 2015
Typical Characteristics (continued)
Over recommended operating temperature range T_J = –40°C to +125°C, V_EN = V_IN, V_IN = V_OUT(nom) + 1 V, I_OUT = 1 mA, C_OUT =
10 μF, C_NR = 0.01 μF, V_OUT(nom) = 2.8 V (unless otherwise noted). Typical values are at T_J = 25°C.
100
90
I_OUT = 200 mA
80
70
60
50
40
I_OUT = 10 mA
30
20 _{VIN = 3.8 V}
10 ^COUT ^{= 10 mF}
C_NR = 0.01 mF
0
10 100 1 k 10 k 100 k 1 M 10 M
Frequency (Hz)
4
2
0
C_NR = 0.001 mF
3
V_IN = 3.8 V
V_OUT = 2.8 V
I_OUT = 200 mA
C_OUT = 2.2 mF
T_J = 25°C
2
C_NR = 0.0047 mF
1
C_NR = 0.01 mF
0
0 20 40 60 80 100 120 140 160 180 200
Time (ms)
Figure 7. TPS73028 Ripple Rejection vs Frequency
4.8
3.8
I_OUT = 200 mA
C_OUT = 2.2 mF
C_NR = 0.01 mF
20
0
-20
dv 0.4 V
=
dt
ms
0 10 20 30 40 50 60 70 80 90 100
Time (ms)
Figure 9. TPS73028 Line Transient Response
V_OUT = 3 V
R_L = 15 W
V_IN
V_OUT
1s/div
Figure 8. TPS73028 Output Voltage, Enable Voltage vs Time
(Start-Up)
V_IN = 3.8 V
20 _{COUT = 10 mF}
0
−20
−40
300
200
100
di 0.02A
=
dt
ms
1mA
0
0 50 100 150 200 250 300 350 400 450 500
Time (ms)
Figure 10. TPS73028 Load Transient Response
250
200
T_J = 125°C
150
T_J = 25°C
100
T_J = −55°C
50
0
0 20 40 60 80 100 120 140 160 180 200
I_OUT (mA)
Figure 11. Power Up and Power Down
Figure 12. Dropout Voltage vs Output Current
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