Datasheet

-50 0 50 100 150
T - Junction Temperature C
J
- °
0.75
0.755
0.76
0.765
0.77
0.775
0.78
V - Vfb Voltage - V
FBTH
t - Time - 400 ns/div
Vo = 1.05 V
Vo (10 mV/div)
SW (5 V/div)
400
450
500
550
600
650
700
750
800
850
900
0 5 10 15 20
V - Input Voltage - V
I
V = 5 V
O
V = 1.5 V
O
I = 1 A
O
V = 3.3 V
O
V = 2.5 V
O
V = 1.8 V
O
V = 1.2 V
O
V = 1.05 V
O
fsw - Switching Frequency - kHz
0 1 2 3 4 5
I - Output Current - A
O
400
450
500
550
600
650
700
750
800
850
900
fsw - Switching Frequency - kHz
V = 3.3 V
O
V = 1.8 V
O
V = 1.05 V
O
40
50
60
70
80
90
100
Efficiency - %
0 1 2 3 4 5
I - Output Current - A
O
V = 3.3 V
O
V = 1.8 V
O
V = 2.5 V
O
EN (10 V/div)
t - Time - 1 ms/div
VREG5 (5 V/div)
Vout (0.5 V/div)
TPS54527
SLVSAY5C –JULY 2011–REVISED MAY 2012 www.ti.com
TYPICAL CHARACTERISTICS (continued)
Figure 7. START-UP WAVE FORM Figure 8. EFFICIENCY vs OUTPUT CURRENT
Figure 9. SWITCHING FREQUENCY vs INPUT VOLTAGE Figure 10. SWITCHING FREQUENCY vs
OUTPUT CURRENT
Figure 11. Vfb VOLTAGE vs JUNCTION TEMPERATURE Figure 12. VOLTAGE RIPPLE AT OUTPUT (I
O
= 2 A)
10 Copyright © 2011–2012, Texas Instruments Incorporated
Product Folder Link(s): TPS54527