RT7278 Datasheet, PDF (8/14 Pages) Richtek Technology Corporation – 3A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter

RT7278
Current Limit vs. Temperature
6.0
5.6
5.2
4.8
4.4
4.0
-50 -25
VIN = 12V, VOUT = 1.05V
0
25 50 75 100 125
Temperature (°C)
Load Transient Response
Currrent Limit vs. Input Voltage
6.0
5.6
5.2
4.8
4.4
4.0
4
VOUT = 1.05V
6
8
10 12 14
16 18
Input Voltage (V)
Load Transient Response
VOUT
(50mV/Div)
VOUT
(20mV/Div)
IOUT
(2A/Div)
VIN = 12V, VOUT = 1.05V, IOUT = 10mA to 3A
Time (250μs/Div)
Output Ripple Voltage
IOUT
(2A/Div)
VIN = 12V, VOUT = 1.05V, IOUT = 1A to 3A
Time (100μs/Div)
Output Ripple Voltage
VOUT
(10mV/Div)
VOUT
(10mV/Div)
VLX
(10V/Div)
VIN = 12V, VOUT = 1.05V, IOUT = 3A
Time (1μs/Div)
VLX
(10V/Div)
VIN = 12V, VOUT = 5V, IOUT = 3A
Time (1μs/Div)
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is a registered trademark of Richtek Technology Corporation.
DS7278-00 January 2013