TPS728XX Datasheet, PDF (9/22 Pages) Texas Instruments – 200mA Low-Dropout Linear Regulator with Pin-Selectable Dual-Voltage Level Output

TPS728xx Series
www.ti.com
SBVS095 – AUGUST 2007
TYPICAL CHARACTERISTICS (continued)
Over operating temperature range (T_J = –40°C to +125°C), V_IN = V_OUT(TYP) + 0.5V or 2.7V, whichever is greater;
I_OUT = 0.5mA, V_EN = V_SET = V_IN, C_OUT = 1.0μF, unless otherwise noted. Typical values are at T_J = +25°C.
1600
1400
1200
1000
800
600
400
200
0
2.5
SHUTDOWN CURRENT
vs INPUT VOLTAGE
T_J = -40°C
T_J = +25°C
T_J = +85°C
T_J = +125°C
I_OUT = 0mA
3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
V_IN (V)
Figure 20.
CURRENT LIMIT
vs INPUT VOLTAGE
350
V_OUT = 3.6V (nom)
340
330
320
T_J = -40°C
T_J = +25°C
T_J = +85°C
T_J = +125°C
310
300
290
280
270
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
V_IN (V)
Figure 22.
TPS728185315 POWER-SUPPLY RIPPLE REJECTION
vs FREQUENCY (V_IN – V_OUT = 1.0V)
90
5mA
V_IN = 2.85V
80
V_OUT = 1.85V
70
C_OUT = 1mF
60
50
200mA 100mA
40
30
20
10
0
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
Figure 24.
CURRENT LIMIT
vs INPUT VOLTAGE
350
V_OUT = 0.9V (nom)
340
330
320
T_J = -40°C
T_J = +25°C
T_J = +85°C
T_J = +125°C
310
300
290
280
270
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
V_IN (V)
Figure 21.
TPS728185315 POWER-SUPPLY RIPPLE REJECTION
vs FREQUENCY (V_IN – V_OUT = 0.85V)
90
80
5mA
V_IN = 2.7V
V_OUT = 1.85V
70
C_OUT = 1mF
60
50
200mA 100mA
40
30
20
10
0
10
100
1k
10k 100k
1M
10M
Frequency (Hz)
Figure 23.
TPS728185315 POWER-SUPPLY RIPPLE REJECTION
vs FREQUENCY (V_IN – V_OUT = 0.5V)
90
V_IN = 3.65V
80
5mA
V_OUT = 3.15V
70
C_OUT = 1mF
60
50
40
200mA 100mA
30
20
10
0
10
100
1k
10k 100k
1M
10M
Frequency (Hz)
Figure 25.
Copyright © 2007, Texas Instruments Incorporated
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