RT2657BQ
Typical Operating Characteristics
Efficiency vs. Output Current
100
90
80
Output Voltage vs. Input Voltage
2.00
1.95
V
IN
= 3.3V
V
IN
= 5V
Efficiency (%)
70
60
50
40
30
20
10
0
0
0.1
0.2
0.3
0.4
0.5
0.6
Output Voltage (V)
1.90
1.85
1.80
1.75
1.70
1.65
V
OUT
= 1.8V
1.60
2.5
3
3.5
4
V
OUT
= 1.8V, I
OUT
= 0A
4.5
5
5.5
Output Current (A)
Input Voltage (V)
Frequency vs. Input Voltage
2.5
2.4
2.40
2.35
Frequency vs. Temperature
V
OUT
= 1.2V
V
OUT
= 1.2V
V
OUT
= 1.8V
Frequency (MHz)1
2.3
2.2
2.1
2.0
1.9
Frequency (MHz)1
2.30
2.25
2.20
2.15
2.10
2.05
V
OUT
= 1.8V
I
OUT
= 0.3A
1.8
2.5
3
3.5
4
4.5
5
5.5
2.00
-50
-25
0
25
V
IN
= 5V, I
OUT
= 0.3A
50
75
100
125
Input Voltage (V)
Temperature (°C)
Output Current Limit vs. Input Voltage
3.0
2.5
2.0
1.5
1.8
1.7
1.6
1.5
1.4
1.3
Output Current Limit vs. Temperature
Output Current Limit (A)
V
OUT
= 1.2V
V
OUT
= 1.8V
1.0
0.5
0.0
2.5
3
3.5
4
4.5
5
5.5
Output Current Limit (A)
V
IN
= 5V, V
OUT
= 1.2V
1.2
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Copyright
©
2014 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS2657BQ-00 July 2014
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
