TPS54360
SLVSBB4C –AUGUST 2012–REVISED OCTOBER 2012
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TYPICAL CHARACTERISTICS
ON RESISTANCE vs JUNCTION TEMPERATURE
0.25
VOLTAGE REFERENCE vs JUNCTION TEMPERATURE
0.814
VIN = 12 V
BOOT-SW = 3 V
BOOT-SW = 6 V
0.809
0.804
0.799
0.794
0.789
0.784
0.2
0.15
0.1
0.05
0
−50
−25
0
25
50
75
100
125
150
−50
−25
0
25
50
75
100
125
150
TJ − Junction Temperature (°C)
TJ − Junction Temperature (°C)
G001
G002
Figure 1.
Figure 2.
SWITCH CURRENT LIMIT vs JUNCTION TEMPERATURE
SWITCH CURRENT LIMIT vs INPUT VOLTAGE
6.5
6.5
6.3
6.1
5.9
5.7
5.5
5.3
5.1
4.9
4.7
4.5
VIN = 12 V
TJ = −40°C
TJ = 25°C
TJ = 150°C
6.3
6.1
5.9
5.7
5.5
5.3
5.1
4.9
4.7
4.5
−50
−25
0
25
50
75
100
125
150
0
10
20
30
40
50
60
TJ − Junction Temperature (°C)
VIN − Input Voltage (V)
G003
G004
Figure 3.
Figure 4.
SWITCHING FREQUENCY vs RT/CLK RESISTANCE
HIGH FREQUENCY RANGE
SWITCHING FREQUENCY vs JUNCTION TEMPERATURE
550
500
ƒSW (kHz) = 92417 × RT (kΩ)−0.991
RT (kΩ) = 101756 × fSW (kHz)−1.008
RT = 200 kΩ, VIN = 12 V
540
450
400
350
300
250
200
150
100
50
530
520
510
500
490
480
470
460
450
0
200
−50
−25
0
25
50
75
100
125
150
300
400
500
600
700
800
900 1000
TJ − Junction Temperature (°C)
RT/CLK − Resistance (kΩ)
G005
G006
Figure 5.
Figure 6.
6
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