RT2657BQ
Output Voltage vs. Temperature
1.85
1.84
1.83
0.66
0.65
0.64
0.63
V
FB
vs. Temperature
Output Voltage (V)
1.82
1.80
1.79
1.78
1.77
1.76
1.75
-50
-25
0
25
50
75
100
125
V
FB
(V)
1.81
0.62
0.61
0.60
0.59
0.58
V
IN
= 5V, V
OUT
= 1.8V, I
OUT
= 0.3A
0.57
0.56
-50
-25
0
25
V
IN
= 3.3V, V
OUT
= 0.6V
50
75
100
125
Temperature (°C)
Temperature (°C)
Output Ripple
Output Ripple
V
OUT
(10mV/Div)
V
OUT
(10mV/Div)
V
LX
(2V/Div)
V
IN
= 5V, V
OUT
= 1.2V, I
OUT
= 0.6A
V
LX
(5V/Div)
V
IN
= 5V, V
OUT
= 1.8V, I
OUT
= 0.6A
Time (250ns/Div)
Time (250ns/Div)
Load Transient Response
Load Transient Response
V
OUT
(50mV/Div)
V
OUT
(50mV/Div)
I
OUT
(500mA/Div)
V
IN
= 5V, V
OUT
= 1.8V, I
OUT
= 0A to 0.6A
I
OUT
(500mA/Div)
V
IN
= 5V, V
OUT
= 1.8V, I
OUT
= 0.2A to 0.6A
Time (100μs/Div)
Time (100μs/Div)
Copyright
©
2014 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
8
DS2657BQ-00 July 2014
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
