TPS5110_16 Datasheet, PDF (13/43 Pages) Texas Instruments – SYNCHRONOUS-BUCK PWM CONTROLLER WITH NMOS LDO CONTROLLER

TPS5110
TYPICAL CHARACTERISTICS
SLVS025B − APRIL 2002 − REVISED JULY 2004
−160
FLT (OVP) SOURCE CURRENT
vs
JUNCTION TEMPERATURE
−140
−120
−100
FLT (UVP) SOURCE CURRENT
vs
JUNCTION TEMPERATURE
−3.0
−2.5
−2.0
−80
−1.5
−60
−1.0
−40
−20
V _{LDO_IN} = 3.6 V, V _INV= 1.0 V, V _FLT = 0.5 V
0
−0.5
VLDO_IN = 3.6 V,
VINV ^{= 0.5 V, V} _FLT= 0.5 V
0.0
−50
0
50
100
150
−50
0
50
100
150
TJ − Junction Temperature − °C
Figure 4
TJ − Junction Temperature − °C
Figure 5
TRIP CURRENT
vs
JUNCTION TEMPERATURE
25
LDO_GATE SINK CURRENT
vs
OUTPUT VOLTAGE
2.0
20
1.5
15
1.0
10
0.5
5
VTRIP = VVIN_SENSE − 0.1 V
0
−50
0
50
100
150
TJ − Junction Temperature − °C
Figure 6
NOTE: VVIN_SENSE = 12 V, VREG5V_IN = 5 V unless otherwise noted.
0.0
0
VINV_LDO= _{2.0 V}
VLDO_IN = VLDO_CUR _{= 3.3 V}
2
4
6
8
Voltage − V
Figure 7
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