BQ2014SN-D120TR Datasheet

IC型号：
BQ2014SN-D120TR
PDF描述：
Gas Gauge IC with External Charge Control
文件大小：
233.59KB
PDF页数：
22页
芯片厂家：
TI

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bq2014

determined by multiplying the rated battery capac-

ity in mAh by the sense resistor value:

Battery capacity (mAh) * sense resistor (鈩? =

PFC (mVh)

Selecting a PFC slightly less than the rated capac-

ity for absolute mode provides capacity above the

full reference for much of the battery's life.

Example: Selecting a PFC Value

Given:

Sense resistor = 0.1鈩?/div>

Number of cells = 6

Capacity = 2200mAh, NiCd battery

Current range = 50mA to 2A

Relative display mode

Serial port only

Self-discharge =

C 64

Voltage drop over sense resistor = 5mV to 400mV

Therefore:

2200mAh

鈭?/div>

0.1鈩?= 220mVh

Select:

PFC = 33792 counts or 211mVh

PROG

= float

PROG

= float

PROG

= float

PROG

= low

PROG

= float

DONE = low

Table 1. bq2014 Programming

Pin Connection

PROG

Self-Discharge Rate

Disabled

NAC

DISP Display State

LED disabled

LED enabled on discharge when

SRO

< -4mV or during a valid charge

LED on

NAC

Table 2. bq2014 Programmed Full Count mVh Selections

PROG

Programmed

PROG

= L

Full

PROG

= Z

Count

(PFC)

PROG3 = H PROG3 = Z PROG3 = L PROG3 = H PROG3 = Z PROG3 = L

49152

45056

40960

36864

33792

30720

27648

25600

22528

Scale =

1/80

614

563

512

461

422

384

346

320

282

Scale =

1/160

307

282

256

230

211

192

173

160

141

Scale =

1/320

154

141

128

115

106

96.0

86.4

80.0

70.4

22.5

Scale =

1/640

76.8

70.4

64.0

57.6

53.0

48.0

43.2

40.0

35.2

11.25

Scale =

1/1280

38.4

35.2

32.0

28.8

26.4

24.0

21.6

20.0

17.6

5.6

Scale =

1/2560

19.2

17.6

16.0

14.4

13.2

12.0

10.8

10.0

8.8

2.8

Units

mVh/

count

mVh

VSR equivalent to 2

counts/s (nom.)

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BQ2014SN-D120TR 产品属性

标准包装
2,500
类别
集成电路 (IC)
家庭
PMIC - 电池管理
系列
-
功能
燃料，电量检测计/监控器
电池化学
镍镉（NiCd）、镍金属氢化物（NiMH）
电源电压
3 V ~ 6.5 V
工作温度
0°C ~ 70°C
安装类型
表面贴装
封装/外壳
16-SOIC（0.154"，3.90mm 宽）
供应商设备封装
16-SOIC N
包装
带卷 (TR)
配用
296-9509-ND - EVAL MOD BQ20XX GAS GAUGE IC'S

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BQ2014SN-D120TR Datasheet

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