RT8289
Shutdown Current vs. Input Voltage
60
50
40
30
20
10
0
4
8
12
16
20
24
Quiescent Current vs. Temperature
1
0.9
Quiescent Current (mA)
Shutdown Current (μA)1
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
V
IN
V
IN
V
IN
V
IN
=
=
=
=
8V
12V
24V
32V
V
EN
= 0V
28
32
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Current Limit vs. Temperature
12
11
Switching
Current Limit (A)
10
9
8
7
6
5
-50
-25
0
25
V
OUT
(10mV/Div)
V
SW
(20V/Div)
I
L
(5A/Div)
V
IN
= 12V, V
OUT
= 2.5V
50
75
100
125
V
IN
= 12V, V
OUT
= 5V, I
OUT
= 5A
Time (1μs/Div)
Temperature (°C)
Load Transient Response
Load Transient Response
V
OUT
(200mV/Div)
V
OUT
(200mV/Div)
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 5V, I
OUT
= 2.5A to 5A
I
OUT
(2A/Div)
V
IN
= 12V, V
OUT
= 5V, I
OUT
= 0.2A to 5A
Time (100μs/Div)
Time (100μs/Div)
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6
DS8289-01 March 2011
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
