Datasheet


SLVS426 − MAY 2002
www.ti.com
14
TYPICAL CHARACTERISTICS
Figure 1
1
1.5
2
2.5
3
−50 0 50 100 150
T
J −
Junction Temperature − °C
− Supply Current − mA
SUPPLY CURRENT
vs
JUNCTION TEMPERATURE
I
CC
V
(LDO_IN)
= V
(LDO_CUR)
= 3.6 V,
V
(PWM_ESL)
= V
(FLT)
= V
(CT)
= 0 V
Figure 2
0
50
100
150
200
250
−50 0 50 100 150
T
J −
Junction Temperature − °C
− Supply Current (Shutdown) − nA
SUPPLY CURRENT (SHUTDOWN)
vs
JUNCTION TEMPERATURE
I
CC
V
(LDO_IN)
= V
(LDO_CUR)
= 3.6 V,
V
(INX)
= V
(INV_LDO)
= 0 V
V
(SS_STBYx)
= 0 V
V
(STBY_VREF 3.3/5)
= 0 V
V
(PWM_SEL)
= 0 V
Figure 3
−160
−140
−120
−100
−80
−60
−40
−20
0
−50 0 50 100 150
T
J −
Junction Temperature − °C
− Source Current − FLT(OVP) −
SOURCE CURRENT FLT(OVP)
vs
JUNCTION TEMPERATURE
I
S
V
(LDO_IN)
= V
(LDO_CUR)
= 3.3 V,
V
(INV_LDO)
= 1 V
Aµ
Figure 4
−3
−2.5
−2
−1.5
−1
−0.5
0
−50 0 50 100 150
T
J −
Junction Temperature − °C
SOURCE CURRENT FLT(UVP)
vs
JUNCTION TEMPERATURE
V
(LDO_IN)
= V
(LDO_CUR)
= 3.3 V,
V
(INV_LDO)
= 5 V
− Source Current − FLT(UVP) − I
S
Aµ
Figure 5
0
5
10
15
20
25
−50 0 50 100 150
T
J −
Junction Temperature − °C
Trip Current −
TRIP CURRENT
vs
JUNCTION TEMPERATURE
V
(Trip)
= V
(VIN_SENSE)
− 0.1 V
Aµ
Figure 6
0
0.5
1
1.5
2
2.5
3
02468
10
V
O
− Output Voltage − V
Sink Current (LDO_GATE) − mA
SINK CURRENT (LDO_GATE)
vs
OUTPUT VOLTAGE
V
(INV_LDO)
= 2 V
V
(LDO_IN)
= V
(LDO_CUR)
= 3.3 V
V
(VIN_SENSE)
= 12 V, unless otherwise noted