Datasheet

3
100
0
5 10 14
200
300
400
8 12
V
IN
– Input Voltage – V
f
SW
– Switching Frequency – kHz
4 9 136 117
1.05
2.50
V
OUT
(V)
PWM Mode
I
OUT
= 2 A
50
150
250
350
T
ON
– On-Time Resistance – kW
0
0
700300100 400 600200 500
300
600
900
100
400
700
1000
f
SW
– Switching Frequency – kHz
500
1.05
2.50
V
OUT
(V)
200
800
3
1.04
1.03
5 10 14
1.05
1.06
1.07
8 12
V
IN
– Input Voltage – V
V
OUT
– Output Voltage – V
0
10
I
LOAD
(A)
4 9 136 117
V
OUT
= 1.05 V
V
IN
– Input Voltage – V
3
2.40
5 10 148 124 9 136 117
2.44
2.48
2.52
2.42
2.46
2.50
2.54
0
10
I
LOAD
(A)
V
OUT
– Output Voltage – V
V
OUT
= 2.5 V
Not Recommended for New Designs
TPS51315
SLUS881B –MAY 2009–REVISED AUGUST 2012 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At V
IN
= 12 V, V
V5IN
= 5 V, R
T(on)
= 237 kΩ, and T
A
= 25°C, unless otherwise noted.
OUTPUT VOLTAGE OUTPUT VOLTAGE
vs vs
INPUT VOLTAGE INPUT VOLTAGE
Figure 9. Figure 10.
SWITCHING FREQUENCY MEASURED SWITCHING FREQUENCY
vs vs
INPUT VOLTAGE ON-TIME RESISTANCE
Figure 11. Figure 12.
14 Submit Documentation Feedback Copyright © 2009–2012, Texas Instruments Incorporated
Product Folder Links: TPS51315