Datasheet

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SLOS389A – NOVEMBER 2001– REVISED MAY 2002
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7
TYPICAL CHARACTERISTICS
Figure 2
0
10
20
30
40
50
60
70
80
90
100
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P
O
= 2 W
P
O
= 1 W
P
O
= 0.5 W
Efficiency – %
EFFICIENCY
vs
LOAD RESISTANCE
R
L
– Load Resistance – Ω
V
DD
= 5 V
f
S
= 500 kHz
Figure 3
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P
O
= 1 W
P
O
= 0.5 W
P
O
= 0.25 W
Efficiency – %
EFFICIENCY
vs
LOAD RESISTANCE
R
L
– Load Resistance – Ω
0
10
20
30
40
50
60
70
80
90
100
V
DD
= 3.3 V
f
S
= 500 kHz
Figure 4
0
50
100
150
200
250
300
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
Total
Low Side
High Side
I
O
= 1 A
T
A
= 25°C
DRAIN-SOURCE ON-STATE RESISTANCE
vs
SUPPLY VOLTAGE
V
DD
– Supply Voltage – V
r
DS(on)
– Drain-Source On-State Resistance – mΩ
Total
Figure 5
–40 –15 10 35 60 85
Low Side
High Side
V
DD
= 5 V
I
O
= 1 A
VFP Package
DRAIN-SOURCE ON-STATE RESISTANCE
vs
FREE-AIR TEMPERATURE
T
A
– Free-Air Temperature – °C
0
50
100
150
200
250
300
r
DS(on)
– Drain-Source On-State Resistance – mΩ