Datasheet

0 0.2 0.4 0.6 0.8 1
0
2
4
6
8
10
OPERATING ON TIME (Ps)
LOAD CURRENT (A)
V
IN
= 12V
V
IN
= 6V
V
IN
= 24V
0 40
0
100
200
300
400
500
600
OPERATING FREQUENCY (kHz)
V
IN
(V)
10 20 30
L = 10 PH
L = 15 PH
L = 22 PH
V
OUT
= 3.3V
I
OUT
= 500 mA
C
ff
= 100 pF
-40 -10 20 50 80 110 140
JUNCTION TEMPERATURE, T
J
(°C)
40
60
80
100
120
140
160
T
ONMIN_NOR
(ns)
V
IN
= 4.5V
V
IN
= 24V
V
IN
= 12V
-40 -10 20 50 80 110 140
JUNCTION TEMPERATURE, T
J
(
o
C)
100
150
200
250
300
T
ONMIN_CL
(ns)
V
IN
= 12V
V
IN
= 4.5V
V
IN
= 24V
-40 -10 20 50 80 110 140
JUNCTION TEMPERATURE, T
J
(°C)
8
8.5
9
9.5
10
T
CL
(Ps)
V
IN
= 12V
V
IN
= 4.5V
V
IN
= 24V
V
IN
= 35V
0 40
3
3.5
4
4.5
5
5.5
6
V
IN
-V
PGATE
(V)
V
IN
(V)
10 20 30
-40°C
25°C
125°C
LM3489
LM3489-Q1
SNVS443B –MAY 2006–REVISED FEBRUARY 2013 www.ti.com
Typical Performance Characteristics (continued)
All curves taken at VIN = 12V with configuration in Design Information. T
J
= 25°C, unless otherwise specified.
Current Limit One Shot OFF Time vs Temperature V
IN
- V
PGATE
vs V
IN
Figure 8. Figure 9.
Minimum ON Time vs Temperature (Normal Operation) Minimum ON Time vs Temperature (Current Limit)
Figure 10. Figure 11.
Operating ON Time vs Load Current Operating Frequency vs Input Voltage
Figure 12. Figure 13.
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