RT5028B
Marking Information
Pin Configuration
RT5028BGQW : Product Number
(TOP VIEW)
RT5028B
GQW
YMDNN : Date Code
YMDNN
56 55 54 53 52 51 50 49 48 47 46 45 44 43
1
2
42
41
40
39
38
37
36
35
34
33
32
31
30
29
VOUTL1
VINL123
VOUTL2
VOUTL3
VOUTL6
VOUTL5
VINL456
VOUTL4
VOUTL7
VINL78
VOUTL8
ENL4
LXB2
LXB2
ENB2
VOUTB2S
VINB3
VINB3
LXB3
3
4
5
6
7
AGND
8
LXB3
9
AGND
VOUTB3S
VINB4
LXB4
ENB3
VOUTB4S
10
11
12
13
14
57
ENL5
ENL6
15 16 17 18 19 20 21 22 23 24 25 26 27 28
WQFN-56L 7x7
Functional Pin Description
Pin No.
Pin Name
VOUTL1
VINL123
VOUTL2
VOUTL3
VOUTL6
VOUTL5
VINL456
VOUTL4
VOUTL7
VINL78
VOUTL8
ENL4
Pin Function
1
2
Output voltage regulation node for LDO1.
Input power for LDO1, LDO2 and LDO3.
3
Output voltage regulation node for LDO2.
4
Output voltage regulation node for LDO3.
5
Output voltage regulation node for LDO6.
6
Output voltage regulation node for LDO5.
7
Input power for LDO4, LDO5 and LDO6.
8
Output voltage regulation node for LDO4.
9
Output voltage regulation node for LDO7.
10
11
12
13
14
15
Input power for LDO7 and LDO8.
Output voltage regulation node for LDO8.
Enable control input for LDO4. Connect a 100kΩ pull-low resistor.
Enable control input for LDO5. Connect a 100kΩ pull-low resistor.
Enable control input for LDO6. Connect a 100kΩ pull-low resistor.
ENL5
ENL6
SCL
Clock input for I2C. Open-drain output, connect a 10kΩ pull-up resistor.
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2
DS5028B-01 September 2016
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
