Datasheet

0
0.1
0.2
0.3
0.4
−40 0 25
85
125
I
O
= 1.5 A
V
I
= 5 V
T −
J
Junction Temperature − C°
Drain-Source On-State Resistance
− Ω
450
−40 0 25
f − Internally Set Oscillator Frequency
−kHz
550
750
85 125
650
350
250
T −
J
Junction Temperature − C°
SYNC ≥ 2.5 V
SYNC ≤ 0.8 V
0.1
0.2
0.3
0.4
0.5
0.6
−40 0 25 85 125
0
I
O
= 1.5 A
V
I
= 3.3 V
T −
J
Junction Temperature − C°
Drain-Source On-State Resistance
−
Ω
400
−40 0 25
f − Externally Set Oscillator Frequency
− kHz
500
800
85 125
700
300
200
T −
J
Junction Temperature − C°
600
RT = 68 k
RT = 100 k
RT = 180 k
0.889
−40 0 25
− Voltage Reference
− V
0.895
85 125
0.893
0.887
0.885
T −
J
Junction Temperature − C°
0.891
V
ref
0.8850
0.8870
0.8890
0.8910
0.8930
0.8950
3 4 5 6
f
S
= 350 kHz
T
A
= 85°C
V −
I
Input Voltage − V
− Output V
oltage Regulation
− V
V
O
T −
J
Junction Temperature − C°
3.35
3.20
2.90
−40 0 2 5 85
Internal Slow-Start Time
− ms
3.50
3.65
125
3.80
3.05
2.75
1
f − Frequency − Hz
60
40
0
0 10 100 1k 10 k 00 k 1M
Gain
− dB
80
100
140
10 M
120
20
−20
Phase −
Degrees
0
−20
−40
−60
−80
−100
−120
−140
−160
−180
−200
R
L
= 10 kΩ,
C
L
= 160 pF,
T
A
= 25°C
Phase
Gain
TPS54110
www.ti.com SLVS500C –DECEMBER 2003– REVISED FEBRUARY 2011
TYPICAL CHARACTERISTICS
INTERNALLY SET OSCILLATOR
DRAIN-SOURCE ON-STATE DRAIN-SOURCE ON-STATE
RESISTANCE RESISTANCE FREQUENCY
vs vs vs
JUNCTION TEMPERATURE JUNCTION TEMPERATURE JUNCTION TEMPERATURE
Figure 1. Figure 2. Figure 3.
EXTERNALLY SET OSCILLATOR
FREQUENCY VOLTAGE REFERENCE OUTPUT VOLTAGE REGULATION
vs vs vs
JUNCTION TEMPERATURE JUNCTION TEMPERATURE INPUT VOLTAGE
Figure 4. Figure 5. Figure 6.
INTERNAL SLOW-START TIME
ERROR AMPLIFIER vs
OPEN LOOP RESPONSE JUNCTION TEMPERATURE
Figure 7. Figure 8.
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