RT7285D
Switching Frequency vs. Temperature
650
3.0
2.8
2.6
Current Limit vs. Temperature
Switching Frequency (kHz)
1
630
610
590
570
550
530
510
490
470
450
-50
-25
0
25
50
75
100
125
Current Limit (A)
V
IN
= 6V
V
IN
= 12V
V
IN
= 18V
V
IN
= 4.5V
2.4
2.2
2.0
1.8
1.6
1.4
V
IN
= 6V
V
IN
= 12V
V
IN
= 18V
V
OUT
= 1.2V
1.2
1.0
-50
-25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
Load Transient Response
Load Transient Response
V
OUT
(20mV/Div)
V
OUT
(20mV/Div)
I
OUT
(1A/Div)
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 0A to 1.5A
I
OUT
(1A/Div)
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 0.75A to 1.5A
Time (100μs/Div)
Time (100μs/Div)
Switching
Switching
V
OUT
(20mV/Div)
V
SW
(10V/Div)
V
OUT
(20mV/Div)
V
SW
(10V/Div)
I
L
(1A/Div)
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 1.5A
I
L
(1A/Div)
V
IN
= 12V, V
OUT
= 1.2V, I
OUT
= 0.75A
Time (1μs/Div)
Time (1μs/Div)
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7285D-04 March 2018
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
