AIC1781A 查看數據表（PDF） - Analog Intergrations

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AIC1781A

Battery Charge Controller

Analog Intergrations 

AIC1781A

TABLE 2

BATTERY

CELLS

2~4

3~6

4~8

5~10

6~12

8~16

RA/RB

2

3.3

4.9

6.4

7.8

10.8

RA (KΩ)

240

300

300

300

310

390

RB (KΩ)

120

91

62

47

39

36

For SEL3 < (VCC/2) -0.4V, the suggested divider

resistance of RA and RB for the corresponding

number of battery cells are as below:

TABLE 3

BATTERY

CELLS

2

3

4

5

6

8

10

12

16

RA/RB

1

2

3

4

5

7

9

11

15

RA(KΩ)

240

240

240

300

300

360

360

390

410

RB (KΩ)

240

120

80

75

60

51

40

36

27

Battery Temperature Measurement

The AIC1781A employs a negative temperature

coefficient (NTC) thermistor to measure the

battery’s temperature. The thermistor is inherently

nonlinear with respect to temperature. To reduce

the effect of nonlinearity, a resistor-divider network

in parallel with the thermistor is recommended. A

typical application circuit is shown in Fig. 18.

VBAT

VCC

Rx

5

VCC

4

VTS

C7

AIC1781A

Ry 12

GND

Fig. 18 Battery Temperature Sense Circuit

with a Negative Temperature Coefficient

(NTC) Thermistor

11

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