rt9218b Richtek Technology Corporation, rt9218b Datasheet - Page 7

• Manufacturer Part Number: rt9218b
• Description: Synchronous Buck Dc-dc Linear Power Controller
• Manufacturer: Richtek Technology Corporation

Typical Operating Characteristics
DS9218B-09 March 2007
(V
OUT
0.812
0.808
0.806
0.804
0.802
0.798
0.95
0.85
0.75
0.65
4.75
4.25
3.75
0.81
= 2.5V, unless otherwise specified )
0.9
0.8
0.7
0.6
4.5
3.5
0.8
1
4
-40
-40 -25 -10
0
V
V
V
V
Reference Voltage vs. Temperature
CC
IN
CC
IN
= 5V
= 5V
= 12V
= 12V
-10
Efficiency vs. Output Current
5
POR vs. Temperature
5
Output Current (A)
20
20
Temperature (°C)
Rising
Falling
Rising
Falling
Temperature
10
35
50
50
15
65
80
(°C)
80
20
95 110 125
110
140
25
PGOOD
UGATE
SV
350
330
310
290
270
250
OUT
I
I
L
L
-40
(1V/Div)
(500mV/Div)
(2A/Div)
V
I
R
OCSET
CC
OCSET
= 12V, V
-10
Frequency vs. Temperature
= 20A
= 15kΩ
Soft Start & PGOOD
IN
20
Time (10ms/Div)
= 5V
Time (5us/Div)
Temperature (°C)
OCP
50
RT9218B
80
www.richtek.com
(10V/Div)
(10A/Div)
110
140
7