Datasheet


SLVS426 − MAY 2002
www.ti.com
15
TYPICAL CHARACTERISTICS
Figure 7
−2
−1.5
−1
−0.5
0
0246810
V
O
− Output Voltage − V
SOURCE CURRENT (LDO_GATE)
vs
OUTPUT VOLTAGE
Source Current (LDO_GATE) − mA
V
(INV_LDO)
= 0 V
V
(LDO_IN)
= V
(LDO_CUR)
= 3.3 V
Figure 8
935
940
945
950
955
−50 0 50 100 150
T
J −
Junction Temperature − °C
Threshold Voltage (OVP) − mV
THRESHOLD VOLTAGE (OVP)
vs
JUNCTION TEMPERATURE
Figure 9
10
100
1000
0 50 100 150 200 250 300 350
C − Capacitance − pF
Oscillator Frequency − kHz
OSCILLATOR FREQUENCY
vs
CAPACITANCE
T
J
= 25°C
Figure 10
70
75
80
85
90
95
100
−50 0 50 100 150
T
J −
Junction Temperature − °C
Output Maximum Duty Cycle − %
OUTPUT MAXIMUM DUTY CYCLE
vs
JUNCTION TEMPERATURE
V
(LH)
= 5 V, C
(CT)
= 45 pF,
V
(PWM_SEL)
= V
(FLT)
= V
(LL)
= V
(INV)
= 0 V
CH2
CH1/3
Figure 11
0.1
1
10
100
1000
10000
100000
10 100 1000 10000
V
INV
= 0.85 to 1.05 V,
T
J
= 25°C
C − Capacitance − pF
− Delay Time FLT (OVP) −
DELAY TIME FLT(OVP)
vs
CAPACITANCE
t
d
sµ
Figure 12
0.1
1
10
100
1000
10000
100000
10 100 1000 10000
V
INV
= 0.65 to 0.05 V,
T
J
= 25°C
C − Capacitance − pF
− Delay Time FLT (UVP) −
DELAY TIME FLT(UVP)
vs
CAPACITANCE
t
d
sµ
V
VIN_SENSE
= 12 V, unless otherwise noted