IP5389

V1.23

www.injoinic.com

31 / 41

Copyright © 2023, Injoinic Corp.

Table 17

The sequence mapping relationship between IP5389 display driver and nixie tube pin

12.12

Setting the System Input/Output Maximum Power

IP5389 sets the maximum input and output power of the system by judging the resistance value

connected to the PMAX pin.

Table 18

Input and output maximum power configuration table

Note: For emark cable identification, please refer to the demo application schematic to add emark power

supply circuit.

12.13

Setting the Number of Batteries in Series

IP5389 sets the number of batteries in series by judging whether the BAT_S1 or BAT_S2 pins is

connected to GND, thereby changing the battery display threshold, the constant voltage for charging the

battery, and the protection voltage.

BAT_S1 R18(ohm)

BAT_S2 R19(ohm)

the number of batteries in

series

0

0

2

NC

0

3

0

NC

4

NC

NC

5

Table 19

Configuration table of the number of batteries in series

12.14

VSET(Battery Type Setting)

IP5389 sets the battery type by outputting 80uA current to the resistor connected to GND on the VSET

pin and judging the voltage on the VSET, thereby changing the battery display threshold, the constant

voltage for charging the battery, and the protection voltage. The different resistances to GND connected

to VSET and the corresponding different battery types are shown in the following table. Note that the

accuracy of the external resistance should be 1% and the voltage of VSET should be in the middle of the

judgment range. When the voltage of VSET exceeds all judgment ranges, the chip will recognize the circuit

PMAX R14（ohm 1%）

Maximum power PMAX

27k

65W( In the case of emark cable, the output power is

65W.)

18k

60W

13k

45W

9.1k

30W

6.2k

27W

3.6k

100W( In the case of emark cable, the output power

is 100W.)