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TPS54610
SLVS398D − JUNE 2001 − REVISED JULY 2003
TYPICAL CHARACTERISTICS
DRAIN-SOURCE
ON-STATE RESISTANCE
vs
JUNCTION TEMPERATURE
Drain Source On-State Reststance − m
Ω
60
VIN = 3.3 V
50
IO = 6 A
Drain Source On-State Reststance − m
Ω
60
VIN = 5 V
50
IO = 6 A
40
DRAIN-SOURCE
ON-STATE RESISTANCE
vs
JUNCTION TEMPERATURE
f − Internally Set Oscillator Frequency − kHz
750
INTERNALLY SET
OSCILLATOR FREQUENCY
vs
JUNCTION TEMPERATURE
650
SYNC
≥
2.5 V
550
40
30
20
30
20
450
SYNC
≤
0.8 V
350
10
0
−40
10
0
−40
0
25
85
TJ − Junction Temperature −
°C
125
0
25
85
TJ − Junction Temperature −
°C
125
250
−40
0
25
85
125
TJ − Junction Temperature −
°C
Figure 1
EXTERNALLY SET
OSCILLATOR FREQUENCY
vs
JUNCTION TEMPERATURE
f − Externally Set Oscillator Frequency − kHz
800
700
RT = 68 k
600
0.895
Figure 2
Figure 3
DEVICE POWER LOSSES AT TJ = 125°C
vs
LOAD CURRENT
5
4.5
TJ = 125°C
fs = 700 kHz
VI = 3.3 V
VOLTAGE REFERENCE
vs
JUNCTION TEMPERATURE
V ref − Voltage Reference − V
0.893
Device Power Losses − W
4
3.5
3
2.5
2
1.5
1
0.5
VI = 5 V
0.891
500
RT = 100 k
400
300
RT = 180 k
200
−40
0.889
0.887
0.885
0
25
85
125
−40
TJ − Junction Temperature −
°C
0
25
85
TJ − Junction Temperature −
°C
125
0
0
1
2
3
4
5
6
7
8
IL − Load Current − A
Figure 4
Figure 5
Figure 6
OUTPUT VOLTAGE REGULATION
vs
INPUT VOLTAGE
0.895
VO − Output Voltage Regulation − V
TA = 85°C,
IO = 3 A
0.893
140
120
100
Gain − dB
80
60
40
20
0.887
0
0.885
3
3.5
4
4.5
5
VI − Input Voltage − V
5.5
6
−20
1
ERROR AMPLIFIER
OPEN LOOP RESPONSE
0
RL = 10 kΩ,
CL = 160 pF,
TA = 25°C
−20
−40
Phase − Degrees
−60
Internal Slow-Start Time − ms
3.65
3.50
3.35
3.20
3.05
2.90
2.75
3.80
INTERNAL SLOW-START TIME
vs
JUNCTION TEMPERATURE
0.891
Phase
fs = 550 kHz
−80
−100
−120
0.889
Gain
−140
−160
−180
10
100
−200
1 k 10 k 100 k 1 M 10 M
−40
0
25
85
125
f − Frequency − Hz
TJ − Junction Temperature −
°C
Figure 7
Figure 8
Figure 9
7
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