RT6254A/B
Typical Operating Characteristics
Efficiency vs. Output Current
Efficiency vs. Output Current
100
100
90
80
70
60
50
40
30
20
10
0
90
80
VIN = 4.5V
VIN = 5V
70
VIN = 4.5V
VIN = 5V
VIN = 12V
60
50
40
30
20
10
0
VIN = 18V
V
V
IN = 12V
IN = 18V
VOUT = 1V, L = 1.5μH
10
VOUT = 3.3V, L = 4.7μH
10
0.001
0.01
0.1
1
0.001
0.01
0.1
1
Output Current (A)
Output Current (A)
Efficiency vs. Output Current
Output Voltage vs. Output Current
100
90
80
70
60
50
40
30
20
10
0
1.10
1.05
1.00
0.95
0.90
VIN = 7V
VIN = 12V
VIN = 18V
VIN = 18V
VIN = 12V
IN = 4.5V
V
VOUT = 5V, L = 4.7μH
10
VOUT = 1V
4.5
0.001
0.01
0.1
1
0
0.5
1
1.5
2
2.5
3
3.5
4
5
Output Current (A)
Output Current (A)
Output Current vs. Output Current
EN Threshold vs. Temperature
1.35
1.30
1.25
1.20
1.15
1.10
5.30
5.25
5.20
5.15
5.10
5.05
5.00
4.95
4.90
VOUT = 1V
Rising
VIN = 18V
VIN = 12V
IN = 7V
Falling
V
VOUT = 5V
4.5 5
-50
-25
0
25
50
75
100
125
0
0.5
1
1.5
2
2.5
3
3.5
4
Output Current (A)
Temperature (°C)
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8
DS6254A/B-02 March 2017
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
