RT7277
Current Limit vs. Input Voltage
Current Limit vs. Temperature
6.0
5.5
5.0
4.5
4.0
3.5
3.0
6.0
5.6
5.2
4.8
4.4
4.0
VIN = 12V, VOUT = 1.05V
VIN = 12V, VOUT = 1.05V
4
6
8
10
12
14
16
18
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Load Transient Response
Switching
VSW
(10V/Div)
IOUT
(2A/Div)
VOUT
(10mV/Div)
VOUT
(20mV/Div)
IL
(2A/Div)
VIN = 12V, VOUT = 1.05V, IOUT = 0A to 3A
VIN = 12V, VOUT = 1.05V, IOUT = 3A
Time (100μs/Div)
Time (1μs/Div)
Power Off from VIN
Power On from VIN
VIN
(5V/Div)
VIN
(5V/Div)
VOUT
(1V/Div)
VOUT
(1V/Div)
IOUT
(2A/Div)
IOUT
(2A/Div)
VIN = 12V, VOUT = 1.05V, IOUT = 3A
Time (10ms/Div)
VIN = 12V, VOUT = 1.05V, IOUT = 3A
Time (5ms/Div)
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8
DS7277-00 October 2012
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
