BQ24703PWRG4

更新时间： 2024-02-07 21:04:58

品牌	Logo	应用领域
德州仪器 - TI		电池控制器
页数	文件大小	规格书
32页	518K
描述
MULTICHEMISTRY BATTERY CHARGER CONTROLLER AND SYSTEM POWER SELECTOR

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数据手册

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BQ24703PWRG4 数据手册

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SLUS553D − MAY 2003 − REVISED JULY 2005

ELECTRICAL CHARACTERISTICS (CONTINUED)

(−40°C ≤ T ≤ 125°C, 7.0 V

≤ VCC ≤ 28 V , all voltages relative to V ) (unless otherwise specified)

Adapter Current-Sense Amplifier

PARAMETER

TEST CONDITIONS

MIN

TYP

130

MAX UNIT

175 mA/V

Transconductance gain

CMRR Common-mode rejection ratio

See Note 1

Common-mode input voltage range (ACP)

Sink current (COMP)

7.0

0.5

ICR

2.5

COMP = 1 V, (ACP − ACN) = 10 mV

1.5

(SINK)

ACP = ACN = 28 V,

VCC = 28 V, ACSET = 2.5 V

Input bias current (ACP, ACN)

µA

Input bias current accuracy ratio

ACP = ACN = 28 V, VCC = 28 V,

−3

, I

)

ACSET = 2.5 V, 0 ≤ T ≤ 125°C

(ACP) (ACN)

(SET)

AC current programming voltage (ACSET)

AC current set gain

2.5

0.65 V ≤ ACSET ≤ 2.5 V, 12 V ≤ ACP ≤ 20 V,

See Note 5

24.5

25.3

26.5

V/V

ACSET = 1.25 V, T = 25°C, See Note 6

−5%

−6%

Total ac current-sense mid-scale accuracy

Total ac current-sense full-scale accuracy

ACSET = 1.25 V, See Note 6

ACSET = 2.5 V, T = 25°C, See Note 6

−3.5%

−4%

3.5%

ACSET = 2.5 V, See Note 6

Battery Voltage Error Amplifier

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Transconductance gain

135

175 mA/V

CMRR Common-mode rejection ratio

See Note 1

BATSET common-mode input voltage range

2.5

ICR

Internal reference override input threshold voltage

0.20

0.25

1.5

0.35

COMP = 1 V,

(BATP − BATSET) = 10 mV,

BATSET = 1.25 V

Sink current COMP

0.5

2.5

(SINK)

T = 25°C

1.190 1.196 1.202

1.183 1.196 1.203

1.178 1.196 1.204

T = 0°C to 85°C

Error-amplifier precision reference voltage

ACSET

(FB)

T = −40°C to 125°C

NOTE: 5. Calculation of the ac current: I

SENSE

6. Total ac-current set accuracy is based on the measured value of (ACP−ACN) = ∆c, using the measured gain, A

(

)

Dm * Dc

ACSET

Dc +

, Total accuracy in % +

100, I_(ACP)* I_(ACN)+ 0

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