RT8279 RICHTEK [Richtek Technology Corporation], RT8279 Datasheet - Page 7

• Manufacturer Part Number: RT8279
• Description: 5A, 36V, 500kHz Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

(200mV/Div)
DS8279-01
V
(2A/Div)
OUT
I
OUT
12
11
10
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
9
8
7
6
5
1
0
-50
-50
December 2011
Quiescent Current vs. Temperature
Current Limit vs. Temperature
-25
-25
Load Transient Response
V
IN
0
0
Temperature (°C)
Temperature (°C)
= 12V, V
Time (100μs/Div)
25
25
OUT
= 5V, I
50
50
OUT
75
75
= 2.5A to 5A
V
V
V
V
IN
IN
IN
100
100
IN
= 36V
= 24V
= 12V
= 12V
125
125
(200mV/Div)
(10mV/Div)
V
(10V/Div)
V
(2A/Div)
(5A/Div)
OUT
OUT
V
I
OUT
SW
I
L
60
50
40
30
20
10
0
4
Shutdown Current vs. Input Voltage
8
Load Transient Response
12
V
IN
= 12V, V
Input Voltage (V)
Time (100μs/Div)
Time (1μs/Div)
16
Switching
V
IN
= 12V, V
OUT
20
= 5V, I
24
OUT
RT8279
www.richtek.com
OUT
= 5V, I
28
= 0.2A to 5A
OUT
V
EN
32
= 5A
= 0V
7
36