Datasheet

500 mV/div
1s/div
V
IN
V
OUT
V
OUT
= 3 V
R
L
= 15 Ω
100
50
0 20 40 60 80 100 120
150
200
250
140 160 180 200
0
I
OUT
(mA)
T
J
= 125°C
T
J
= 25°C
T
J
= −55°C
V
DO
(mV)
Time (µs)
0
0 15010050 200 250 350300 400 450
20
0
−20
100
500
V
IN
= 3.8 V
C
OUT
= 10 µF
−40
200
300
di
dt
+
0.02A
µs
1mA
I
OUT
(mA) ∆V
OUT
(mV)
0.01
0.1
10
100
0 0.02 0.04 0.06 0.08 0.20
I
OUT
(A)
1
Region of Instability
Region of Stability
C
OUT
= 2.2 µF
V
IN
= 5.5 V, V
OUT
≥ 1.5 V
T
J
= −40°C to 125°C
ESR, Equivalent Series Resistance (Ω)
0.01
0.1
10
100
0 0.02 0.04 0.06 0.08
0.20
I
OUT
(A)
1
Region of Instability
Region of Stability
C
OUT
= 10 µF
V
IN
= 5.5 V
T
J
= −40°C to 125°C
ESR, Equivalent Series Resistance (Ω)
TPS730xx
SBVS054I –NOVEMBER 2004– REVISED FEBRUARY 2011 www.ti.com
TYPICAL CHARACTERISTICS (SOT23 PACKAGE) (continued)
DROPOUT VOLTAGE
TPS73028 vs
LOAD TRANSIENT RESPONSE POWER-UP/POWER-DOWN OUTPUT CURRENT
Figure 11. Figure 12. Figure 13.
TYPICAL REGIONS OF STABILITY TYPICAL REGIONS OF STABILITY
EQUIVALENT SERIES RESISTANCE (ESR) EQUIVALENT SERIES RESISTANCE (ESR)
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 14. Figure 15.
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