RT8270 RICHTEK [Richtek Technology Corporation], RT8270 Datasheet - Page 5

• Manufacturer Part Number: RT8270
• Description: 2A, 22V, 1.2MHz Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Typical Operating Characteristics
DS8270-01 March 2011
3.300
3.297
3.294
3.291
3.288
3.285
3.282
3.279
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
100
90
80
70
60
50
40
30
20
10
0
0
4
0
Output Voltage vs. Output Current
V
V
V
V
IN
6
IN
IN
IN
Efficiency vs. Output Current
= 22V
= 9V
= 12V
= 22V
Frequency vs. Input Voltage
0.4
0.4
8
V
IN
V
= 12V
Output Current (A)
Output Current (A)
IN
10
Input Voltage (V)
= 4.75V
0.8
V
0.8
IN
12
= 4.75V to 22V, V
14
1.2
1.2
16
V
V
18
1.6
OUT
1.6
OUT
OUT
= 3.3V
= 3.3V
= 3.3V
20
22
2
2
3.400
3.375
3.350
3.325
3.300
3.275
3.250
3.225
3.200
1.226
1.224
1.222
1.220
1.218
1.216
1.214
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
-50
-50
4
Reference Voltage vs. Input Voltage
Output Voltage vs. Temperature
-25
-25
Frequency vs. Temperature
7
0
0
10
Input Voltage (V)
V
Temperature
Temperature
V
IN
IN
25
25
= 12V, V
= 4.75V to 22V, V
13
V
50
50
IN
OUT
= 12V, V
RT8270
(°C)
(°C)
16
www.richtek.com
= 3.3V, I
75
75
OUT
OUT
19
OUT
100
100
= 3.3V
= 3.3V
= 0A
125
125
5
22