KA35S280/281

Lead-Acid Battery Charger

2011 Nov 18

© 2011

9

Table 7

– RT

LTF (°C)

HTF (°C)

5 °C

45 °C

8.18KΩ

15.22KΩ

0 °C

50 °C

7.50KΩ

11.25KΩ

-5 °C

55 °C

6.85KΩ

8.72KΩ

.

= 0.35V

CC

V

LTF

= 0.15V

CC

V

HTF

= 0.12V

CC

V

TCO

LTF

HTF

TCO

Hotter

Colder

V

CC

V

SS

Figure 7

– Voltage Equivalent of Temperature Threshold

NTC

Thermistor

TEMP

KA35S28X

Figure 8

– Configuring Temperature Sensing

- Disabling Temperature Sensing

Temperature sensing may be disabled by removing the thermistor and use a single Pull up

or Pull down resistor connected to TEMP pin as shown in figure 9.

Or

TEMP

KA35S28X

TEMP

KA35S28X

Figure 9

– Disabling Temperature Sensing

where: