RT8800/B
Typical Operating Characteristics
Efficiency vs. Output Current
Load Line
100
90
80
70
60
50
40
30
20
10
0
1.4
RLL = 1.5mΩ, RICOMMON2 = 10kΩ, RDROOP = 100Ω
VIN = 12V, VOUT = 1.4V
VIN = 12V
1.38
1.36
1.34
1.32
1.3
1.28
1.26
1.24
Driver RT9605
0
10 20 30 40 50 60 70 80 90 100
Output Current (A)
0
10 20 30 40 50 60 70 80 90 100
Output Current (A)
Frequency vs. RRT
GM
1000
900
800
700
600
500
400
300
200
100
0
90
RICOMMON1 = 430Ω
80
70
60
50
40
30
20
10
0
GM3
GM2
GM1
0
5
10 15 20 25 30 35 40 45 50 55 60
0
10 20 30 40 50 60 70 80 90 100 110
VC (mV)
RRT ((kkΩ))
ٛ
VREF vs. Temperature
OCP Trip Point vs. Temperature
0.815
0.81
240
210
180
150
120
90
0.805
0.8
0.795
0.79
60
0.785
0.78
30
0
-25 -10
5
20 35 50 65 80 95 110 125
-25
-10
5
20
35
50
65
80
95
Temperature (°C)
(°C)
Temperature
All brand name or trademark belong to their owner respectively
DS8800/B-06 March 2007
www.richtek.com
11
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
