Datasheet

1.90
2
2.10
-50 -25 0 25 50 75 100 125 150
I -SlowStartChargeCurrent- A
SS
m
T -JunctionTemperature-°C
J
3 8 13 18 23 28
V -InputVoltage-V
I
CurrentLimitThreshold- A
3
3.5
4
T =25°C
J
T =-40°C
J
T =150°C
J
100
110
120
130
140
-50 -25 0 25 50 75 100 125 150
Tonmin-MinimumControllableOnTime-ns
T -JunctionTemperature-°C
J
VIN=12V
5.50
5.75
6
6.25
6.50
6.75
7
7.25
7.50
-50 -25 0 25 50 75 100 125 150
MinimumControllableDutyRatio-%
T -JunctionTemperature-°C
J
VIN=12V
0.7760
0.7820
0.7880
0.7940
0.8000
0.8060
0.8120
0.8180
0.8240
-50 -25 0 25 50 75 100 125 150
Vref-VoltageReference-V
T -JunctionTemperature-°C
J
TPS54231
SLUS851C –OCTOBER 2008–REVISED JULY 2012 www.ti.com
TYPICAL CHARACTERIZATION CURVES (continued)
MINIMUM CONTROLLABLE ON MINIMUM CONTROLLABLE DUTY
VOLTAGE REFERENCE TIME RATIO
vs vs vs
JUNCTION TEMPERATURE JUNCTION TEMPERATURE JUNCTION TEMPERATURE
Figure 4. Figure 5. Figure 6.
SS CHARGE CURRENT CURRENT LIMIT THRESHOLD
vs vs
JUNCTION TEMPERATURE INPUT VOLTAGE
Figure 7. Figure 8.
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