RT7237C
Output Current Limit vs. Temperature
Output Current Limit vs. Input Voltage
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
5
4
3
2
1
VIN = 12V, VOUT = 3.3V
50 75 100 125
VIN = 4.5V to 17V, VOUT = 3.3V
-50
-25
0
25
4
6
8
10
12
14
16
18
Temperature (°C)
Input Voltage (V)
Load Transient Response
Load Transient Response
VOUT
(200mV/Div)
VOUT
(200mV/Div)
IOUT
(1A/Div)
IOUT
(1A/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 0A to 2A
VIN = 12V, VOUT = 3.3V, IOUT = 1A to 2A
Time (100μs/Div)
Time (100μs/Div)
Output Ripple Voltage
Output Ripple Voltage
VOUT
(5mV/Div)
VOUT
(5mV/Div)
VSW
(10V/Div)
VSW
(10V/Div)
IL
IL
(1A/Div)
(1A/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 1A
Time (500ns/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 2A
Time (500ns/Div)
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8
DS7237C-04 November 2012
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
