RT6551A/B
Typical Operating Characteristics
Switching Frequency vs. Load Current
Switching Frequency vs. Load Current
500
500
450
400
350
300
250
200
150
100
50
DDR3L, VIN = 7.4V, VDDQ = 1.35V,
S3 = GND, S5 = 5V, RTON = 620kΩ
DDR3L, VIN = 12V, VDDQ = 1.35V,
S3 = GND, S5 = 5V, RTON = 620kΩ
450
400
350
300
250
200
150
100
50
0
0
0.01
0.1
1
10
10
10
0.01
0.1
1
10
Load Current (A)
Load Current (A)
Switching Frequency vs. Load Current
Switching Frequency vs. Load Current
500
450
400
350
300
250
200
150
100
50
500
450
400
350
300
250
200
150
100
50
DDR3L, VIN = 19V, VDDQ = 1.35V,
S3 = GND, S5 = 5V, RTON = 620kΩ
DDR4, VIN = 7.4V, VDDQ = 1.2V,
S3 = GND, S5 = 5V, RTON = 620kΩ
0
0
0.01
0.1
1
0.01
0.1
1
10
Load Current (A)
Load Current(A)
Switching Frequency vs. Load Current
Switching Frequency vs. Load Current
500
450
400
350
300
250
200
150
100
50
500
450
400
350
300
250
200
150
100
50
DDR4, VIN = 12V, VDDQ = 1.2V,
S3 = GND, S5 = 5V, RTON = 620kΩ
DDR4, VIN = 19V, VDDQ = 1.2V,
S3 = GND, S5 = 5V, RTON = 620kΩ
0
0
0.01
0.1
1
0.01
0.1
1
10
Load Current (A)
Load Current (A)
Copyright 2015 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS6551A/B-00 May 2015
www.richtek.com
11
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
