![](/html/ETC/142100/page4.png)
RT9801A/B
Table 1: Pin Conditions for Programmable Threshold Voltage Setting
RT9801A
5.0
4.9
4.8
4.7
RT9801B
4.0
3.9
3.8
3.7
4.6
3.6
4.5
3.5
4.4
3.4
4.3
3.3
4.2
3.2
4.1
3.1
4.0
3.0
3.9
2.9
3.8
2.8
3.7
2.7
3.6
2.6
3.5
2.5
3.4
2.4
3.3
2.3
3.2
2.2
3.1
2.1
3.0
2.0
2.9
1.9
2.8
1.8
2.7
1.7
2.6
1.6
2.5
1.5
Note : 1. H : Connected to VDD
2. L : Connected to GND
3. F : Floating
VSET0
H
H
H
H
H
H
H
H
H
F
F
F
F
F
F
F
F
F
L
L
L
L
L
L
L
L
VSET1
H
H
H
F
F
F
L
L
L
H
H
H
F
F
F
L
L
L
H
H
H
F
F
F
L
L
VSET2
H
F
L
H
F
L
H
F
L
H
F
L
H
F
L
H
F
L
H
F
L
H
F
L
H
F
www.richtek.com
4
DS9801AB-11 March 2007