Datasheet

TYPICAL CHARACTERISTICS
-50 -25 0 25 125
T − JunctionTemperature − C
J
o
1007550
V =12V
I
3
3.5
3.25
I OperatingQuiescentCurrent − mA
Q
−
2.5
2.75
460
-50 -25 0 25 125
T − JunctionTemperature − C
J
o
1007550
460
470
530
500
520
510
f
OscillatorFrequency − kHz
−
480
490
120
180
150
170
160
MinimumControllableOnTime − ns
130
140
-50 -25 0 25 125
T − JunctionTemperature − C
J
o
1007550
-50 -25 0 25 125
T − JunctionTemperature − C
J
o
1007550
1.22
1.23
1.225
V VoltageReference − V
ref
−
1.21
1.215
1.22
1.23
1.225
V VoltageReference − V
ref
−
1.21
1.215
V =12V
I
-50 -25 0 25 125
T − JunctionTemperature − C
J
o
1007550
80
180
150
170
160
r On-StateResistance − m
DS(on)
W−
90
120
130
140
100
110
8
9
8.5
t
InternalSlowStartTime − ms
SS
−
7
7.5
-50 -25 0 25 125
T − JunctionTemperature − C
J
o
1007550
I ShutdownCurrent − A
SD
m−
25
ENA =0V
T =125 C
J
o
T =27 C
J
o
T =-40 C
J
o
0 40
V − InputVoltage − V
I
15105
5
20
15
10
20 353025
7.5
8
7.5
MinimumDutyRatio − %
7
7.25
-50 -25 0 25 125
T − JunctionTemperature − C
J
o
1007550
TPS5420-Q1
www.ti.com ................................................................................................................................................... SLVS752B – NOVEMBER 2007 – REVISED JUNE 2008
OSCILLATOR FREQUENCY OPERATING QUIESCENT CURRENT MINIMUM CONTROLLABLE ON TIME
vs vs vs
JUNCTION TEMPERATURE JUNCTION TEMPERATURE JUNCTION TEMPERATURE
Figure 1. Figure 2. Figure 3.
VOLTAGE REFERENCE ON-STATE RESISTANCE INTERNAL SLOW START TIME
vs vs vs
JUNCTION TEMPERATURE JUNCTION TEMPERATURE JUNCTION TEMPERATURE
Figure 4. Figure 5. Figure 6.
MINIMUM CONTROLLABLE DUTY
SHUTDOWN QUIESCENT CURRENT RATIO
vs vs
INPUT VOLTAGE JUNCTION TEMPERATURE
Figure 7. Figure 8.
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