RT4813
Typical Operating Characteristics
Efficiency vs. Output Curent
100
90
80
V
IN
= 4.2V
V
IN
= 3.7V
V
IN
= 3.3V
V
IN
= 2.5V
V
IN
= 1.8V
Output Voltage Ripple
Efficiency (%)
70
60
50
40
30
20
10
0
0
SW
(2V/Div)
V
OUT_ac
(50mV/Div)
V
OUT
= 5V, L = 1.5μH (TDK SPM6530),
C
OUT
= 22μF x 2, Load = 1mA to 3A
500
1000
1500
2000
2500
3000
V
IN
= 2.5V, V
OUT
= 5V, I
OUT
= 0mA
L = 1.5H (TDK SPM6530), C
OUT
= 22F x 2
Output Current (mA)
Time (10s/Div)
Output Voltage Ripple
Output Voltage Ripple
SW
(2V/Div)
SW
(2V/Div)
V
OUT_ac
(50mV/Div)
V
IN
= 3.6V, V
OUT
= 5V, I
OUT
= 0mA
L = 1.5H (TDK SPM6530), C
OUT
= 22F x 2
V
OUT_ac
(50mV/Div)
V
IN
= 4.2V, V
OUT
= 5V, I
OUT
= 0mA
L = 1.5H (TDK SPM6530), C
OUT
= 22F x 2
Time (10s/Div)
Time (10s/Div)
Output Voltage Ripple
V
IN
= 2.5V, V
OUT
= 5V, I
OUT
= 1000mA
Output Voltage Ripple
V
IN
= 3.6V, V
OUT
= 5V, I
OUT
= 1000mA
L = 1.5H (TDK SPM6530), C
OUT
= 22F x 2
SW
(2V/Div)
SW
(2V/Div)
V
OUT_ac
(20mV/Div)
V
OUT_ac
(20mV/Div)
L = 1.5H (TDK SPM6530), C
OUT
= 22F x 2
Time (1s/Div)
Time (1s/Div)
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is a registered trademark of Richtek Technology Corporation.
www.richtek.com
8
DS4813-09
August 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
