TPS53015_15 Datasheet, PDF (11/22 Pages) Texas Instruments – Single Synchronous Step-down Controller for Low Voltage Power Rails

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TPS53015
SLVSBF0B – JULY 2012 – REVISED AUGUST 2012
TYPICAL CHARACTERISTICS (continued)
V_IN = 12 V, T_A= 25 °C (unless otherwise noted)
LINE REGULATION
1.10
TRANSIENT RESPONSE
1.09
V_O (50 mV/div ac coupled)
1.08
1.07
1.06
1.05
1.04
I_OUT (5 A/div)
1.03
1.02
1.01
1.00
0
I_OUT = 50 mA
I_OUT = 2 A
5
10
15
20
25
30
Input Voltage (V)
G009
Figure 9.
Slew Rate (0.3 A/µsec)
Time Scale (100 µsec/div)
Figure 10.
START UP WAVEFORMS
EN (10 V/div)
VREG5 (5 V/div)
V_O (500 mV/div)
PG (5 V/div)
Time (1 msec/div)
Figure 11.
EFFICIENCY
100
90
80
70
60
50
40
30
20
10
V_IN = 12 V
0
0.0 1.0 2.0
3.0 4.0 5.0
Output Current (A)
Figure 12.
V_OUT = 1.05 V
V_OUT = 1.8 V
V_OUT = 3.3 V
6.0 7.0 8.0
G012
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