RT8253B RICHTEK [Richtek Technology Corporation], RT8253B Datasheet - Page 6

• Manufacturer Part Number: RT8253B
• Description: 3A, 23V, 1.2MHz Synchronous Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT8253B
Typical Operating Characteristics
www.richtek.com
6
0.820
0.815
0.810
0.805
0.800
0.795
0.790
0.785
0.780
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
0.01
-40 -25 -10
4
Reference Voltage vs. Temperature
6
Efficiency vs. Output Current
Frequency. vs. Input Voltage
8
5
10
V
V
IN
IN
0.1
Output Current (A)
Temperature (°C)
Input Voltage (V)
20
= 12V
= 23V
V
12
IN
= 12V, V
35
14
50
V
16
OUT
OUT
65
= 3.3V, I
1
= 3.3V, I
18
80
V
OUT
20
95 110 125
OUT
OUT
= 3.3V
= 0.5A
22
= 1A
10
24
0.820
0.815
0.810
0.805
0.800
0.795
0.790
0.785
0.780
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
-40 -25 -10
4
0
Reference Voltage vs. Input Voltage
Output Voltage vs. Output Current
0.3
6
V
IN
Frequency vs. Temperature
= 23V
0.6
8
V
IN
5
0.9
10
= 12V
Output Current (A)
V
Temperature (°C)
Input Voltage (V)
V
IN
20
IN
= 5 to 23V, V
1.2
12
= 12V, V
35
DS8253B-02 March 2011
1.5
14
50
OUT
1.8
16
OUT
65
= 3.3V, I
2.1
18
= 3.3V, I
80
V
OUT
2.4
20
OUT
95 110 125
OUT
= 3.3V
= 0.5A
2.7
22
= 1A
24
3