Datasheet


SLOS390A – NOVEMBER 2001– REVISED MAY 2002
www.ti.com
7
TYPICAL CHARACTERISTICS
Figure 6
0
50
100
150
200
250
300
–40 –15 10 35 60 85
Total
Low Side
High Side
V
DD
= 3.3 V
I
O
= 1 A
VFP Package
DRAIN-SOURCE ON-STATE RESISTANCE
vs
FREE-AIR TEMPERATURE
T
A
– Free-Air Temperature – °C
r
DS(on)
– Drain-Source On-State Resistance – mΩ
Figure 7
0
2
4
6
8
10
100 200 300 400 500 600 700 800 900 1000
– Supply Current – mA
Switching Frequency – kHz
SUPPLY CURRENT
vs
SWITCHING FREQUENCY
I
q
V
DD
= 5 V
V
DD
= 3.3 V
No Load
10 100 1k 10k 100k
Figure 8
–80
–70
–60
–50
–40
–30
–20
PSRR – Power Supply Rejection Ratio – dB
f – Frequency – Hz
POWER SUPPLY REJECTION RATIO
vs
FREQUENCY
V
DD
= 5 V
f
S
= 500 kHz
R
L
= 1 Ω
V
ripple
= 100 mV
pp
10 100 1k 10k 100k
Figure 9
–80
–70
–60
–50
–40
–30
–20
PSRR – Power Supply Rejection Ratio – dB
f – Frequency – Hz
POWER SUPPLY REJECTION RATIO
vs
FREQUENCY
V
DD
= 3.3 V
f
S
= 500 kHz
R
L
= 1 Ω
V
ripple
= 100 mV
pp