Datasheet

20
30
40
50
60
70
80
90
100
110
120
±50 ±25 0 25 50 75 100 125 150
gm (µA/V)
T
J
- Junction Temperature (C)
C033
1.15
1.16
1.17
1.18
1.19
1.2
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.3
±50 ±25 0 25 50 75 100 125 150
EN - Threshold (V)
T
J
- Junction Temperature (C)
C034
500
700
900
1100
1300
1500
1700
1900
2100
2300
2500
0 50 100 150 200
F
SW
- Switching Frequency (kHz)
RT/CLK - Resistance (k)
C031
200
250
300
350
400
450
500
±50 ±25 0 25 50 75 100 125 150
gm (µA/V)
T
J
- Junction Temperature (C)
C032
450
460
470
480
490
500
510
520
530
540
550
±50 ±25 0 25 50 75 100 125 150
F
S
- Switching Frequency (kHz)
T
J
- Junction Temperature (C)
C029
0
50
100
150
200
250
300
350
400
450
500
200 300 400 500 600 700 800 900 1000
F
SW
- Switching Frequency (kHz)
RT/CLK - Resistance (k)
C030
TPS54560
www.ti.com SLVSBN0A –MARCH 2013–REVISED MARCH 2014
Typical Characteristics (continued)
V
IN
= 12 V R
T
= 200 kΩ ƒsw (kHz) = 92471 x R
T
(kΩ)
-0.991
R
T
(kΩ) = 101756 x ƒsw (kHz)
-1.008
Figure 5. Switching Frequency vs Junction Temperature Figure 6. Switching Frequency vs RT/CLK Resistance
Low Frequency Range
V
IN
= 12 V
Figure 7. Switching Frequency vs RT/CLK Resistance Figure 8. EA Transconductance vs Junction Temperature
High Frequency Range
V
IN
= 12 V V
IN
= 12 V
Figure 9. EA Transconductance During Soft-Start vs Figure 10. EN Terminal Voltage vs Junction Temperature
Junction Temperature
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