Datasheet

TYPICAL CHARACTERISTICS
DrainSourceOn-StateResistance − mΩ
20
25
30
35
40
45
−40 0 25 85 125
T
J
− Junction Temperature − C°
V
I
O
=3V
I =500mA
DrainSourceOn-StateResistance − mΩ
15
20
25
30
35
40
−40 0 25 85 125
T
J
− Junction Temperature − C°
LRds
HRds
V
I
=3.6V
I
O
=500mA
250
−40 0 25 85 125
T
J
− Junction Temperature − °C
f − Internally Set Oscillator Frequency − kHz
SYNC ≥ 2.5 V
SYNC ≤ 0.8 V
350
450
550
650
750
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0
1 2
3
4
5
6
7
I -LoadCurrent- A
L
DevicePowerLosses-W
T =125 C
j
o
V =3.3V
I
400
−40 0 25 85 125
T − Junction C
J
°Temperature −
f − ExternallySetOscillatorFrequency − kHz
1400
1600
1800
1200
1000
800
600
RT =27kΩ
RT =100kΩ
V
ref
− VoltageReference − V
0.885
0.887
0.889
0.891
0.893
0.895
−40 0 25 85 125
T − Junction T C
J
°emperature −
−20
0
20
40
60
80
100
120
140
1 100 1 k 1 M
−200
−180
−160
−140
−120
−100
−80
−60
−40
−20
0
10 10 k 100 k 10 M
f − Frequency − Hz
Gain − dB
Phase − Degrees
Phase
Gain
R
L
= 10 kΩ,
C
L
= 160 pF,
T
A
= 25°C
0.885
0.887
0.889
0.891
0.893
0.895
3 3.1 3.2 3.3 3.4 3.5 3.6
V
I
− Input Voltage − V
− Output Voltage Regulation − V
V
O
2.75
−40 0 25 85 125
InternalSlow-Start Time − ms
3.50
3.65
3.80
3.35
3.20
3.05
2.90
T − Junction Temperature − C
J
°
TPS54617
www.ti.com ........................................................................................................................................... SLVS880A – NOVEMBER 2008 – REVISED JANUARY 2009
DRAIN-SOURCE DRAIN-SOURCE INTERNALLY SET
ON-STATE RESISTANCE ON-STATE RESISTANCE OSCILLATOR FREQUENCY
vs vs vs
JUNCTION TEMPERATURE JUNCTION TEMPERATURE JUNCTION TEMPERATURE
Figure 1. Figure 2. Figure 3.
EXTERNALLY SET
OSCILLATOR FREQUENCY VOLTAGE REFERENCE DEVICE POWER LOSSES
vs vs vs
JUNCTION TEMPERATURE JUNCTION TEMPERATURE LOAD CURRENT
Figure 4. Figure 5. Figure 6.
ERROR AMPLIFIER INTERNAL SLOW-START TIME
OUTPUT VOLTAGE REGULATION vs vs
INPUT VOLTAGE OPEN LOOP RESPONSE JUNCTION TEMPERATURE
Figure 7. Figure 8. Figure 9.
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