RT2855A/B
Current Limit vs. Input Voltage
Output Ripple Voltage
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
VIN = 12V, VOUT = 1.05V
VIN = 12V, VOUT = 1.05V, IOUT = 4A
VOUT
(10mV/Div)
Upper Threshold
Lower Threshold
VSW
(5V/Div)
4
6
8
10
12
14
16
18
Time (500ns/Div)
Input Voltage (V)
Load Transient Response
Load Transient Response
RT2855A
RT2855B
VOUT
VOUT
(50mV/Div)
(50mV/Div)
IOUT
IOUT
(1A/Div)
(1A/Div)
VIN = 12V, VOUT = 1.05V, IOUT = 0A to 3A
VIN = 12V, VOUT = 1.05V, IOUT = 0A to 3A
Time (100μs/Div)
Time (100μs/Div)
Pre Short
RT2855A/B
PGOOD
(5V/Div)
VOUT
(400mV/Div)
ILX
(2A/Div)
Time (200μs/Div)
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12
DS2855A/B-01 September 2015
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
