rt8288 Richtek Technology Corporation, rt8288 Datasheet - Page 6

• Manufacturer Part Number: rt8288
• Description: 3a, 21v 500khz Synchronous Step-down Converter
• Manufacturer: Richtek Technology Corporation

RT8288
Typical Operating Characteristics
www.richtek.com
6
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
100
550
525
500
475
450
425
400
375
350
90
80
70
60
50
40
30
20
10
0
-50
0
4
Switching Frequency vs. Input Voltage
Reference Voltage vs. Temperature
6
-25
Efficiency vs. Output Current
0.5
8
0
Temperature (°C)
Output Current (A)
10
1
Input Voltage (V)
25
12
V
OUT
1.5
V
OUT
= 1.22V, I
14
50
V
V
IN
IN
= 1.22V, I
= 12V
= 21V
16
2
75
OUT
18
OUT
= 0A to 3A
2.5
100
= 0.8A
20
125
22
3
0.830
0.825
0.820
0.815
0.810
0.805
0.800
0.795
0.790
1.240
1.235
1.230
1.225
1.220
1.215
1.210
1.205
1.200
550
525
500
475
450
425
400
375
350
-50
0
4
Switching Frequency vs. Temperature
Reference Voltage vs. Input Voltage
Output Voltage vs. Output Current
6
-25
0.5
8
V
IN
0
= 12V, V
Output Current (A)
10
Temperature (°C)
Input Voltage (V)
1
V
IN
= 12V, V
25
12
OUT
DS8288-01 August 2011
1.5
= 1.22V, I
14
50
OUT
= 1.22V, I
16
2
75
OUT
18
= 0A to 3A
2.5
OUT
100
20
= 1A
125
22
3