RT6343
UVLO Threshold vs. Temperature
Enable Threshold vs. Temperature
5.0
4.6
4.2
3.8
3.4
3.0
1.30
1.26
1.22
1.18
1.14
1.10
Rising
Falling
VOUT = 1V
100 125
VOUT = 1V
-50
-25
0
25
50
75
-50
-25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
Output Voltage vs. Temperature
Current Limit vs. Temperature
5.10
5.05
5.00
4.95
4.90
4.85
4.80
6.1
5.9
5.7
5.5
5.3
5.1
4.9
4.7
4.5
High-Side MOSFET
VIN = 12V, VOUT = 5V
fSW = 500kHz, L= 7.8μH
VIN = 12V, VOUT = 5V, IOUT = 2.5A
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
Output Ripple Voltage
Load Transient Response
VOUT
(10mV/Div)
IOUT
(1A/Div)
VIN = 12V, VOUT = 5V
IOUT = 1.75A to 3.5A, fSW = 400kHz
COUT = 47μF x 2, L = 10μH
VOUT
(200mV/Div)
VSW
(5V/Div)
VIN = 12V, VOUT = 5V, IOUT = 3mA, fSW = 400kHz
Time (50μs/Div)
Time (100μs/Div)
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18
DS6343-00 October 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
