RT6254A/B
UVLO vs. Temperature
Output Voltage vs. Temperature
4.6
4.4
4.2
4.0
3.8
3.6
3.4
1.03
1.02
1.01
1.00
0.99
Rising
Falling
VIN = 18V
VIN = 12V
VIN = 4.5V
VOUT = 1V, IOUT = 0A
50 75 100 125
VOUT = 1V, IOUT = CCM
50 75 100 125
-50
-25
0
25
-50
-25
0
25
Temperature (°C)
Temperature (°C)
Load Transient Response
Output Voltage vs. Temperature
5.15
5.10
5.05
5.00
4.95
4.90
VOUT
(20mV/Div)
VIN = 18V
V
V
IN = 12V
IN = 7V
IOUT
(2A/Div)
VIN = 12V, VOUT = 1V, IOUT = 0A to 4A,
L = 1.5μH, COUT = 22μF x 2
VOUT = 5V, IOUT = CCM
50 75 100 125
Time (100μs/Div)
-50
-25
0
25
Temperature (°C)
Output Ripple Voltage
Power On from EN
VOUT
(1V/Div)
VOUT
(20mV/Div)
VEN
(2V/Div)
VLX
(10V/Div)
VLX
(5V/Div)
IOUT
(2A/Div)
VIN = 12V, VOUT = 1V, IOUT = 4A,
L = 1.5μH, COUT = 22μF x 2
VIN = 12V, VOUT = 1V, IOUT = 4A
Time (10ms/Div)
Time (2μs/Div)
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is a registered trademark of Richtek Technology Corporation.
DS6254A/B-02 March 2017
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9
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