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參數(shù)資料
| 型號(hào)： | bq2014H |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Low-Cost NiCd/NiMH Gas Gauge IC(低價(jià)格NiCd/NiMHGas Gauge芯片) |
| 中文描述： | 低成本鎳鎘/鎳氫電池電量監(jiān)測(cè)計(jì)芯片（低價(jià)格鎳鎘/ NiMHGas計(jì)芯片） |
| 文件頁(yè)數(shù)： | 1/22頁(yè) |
| 文件大小： | 185K |
| 代理商： | BQ2014H |
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Features
Accurate measurement of avail-
able capacity in NiCd or NiMH
batteries
Low-cost battery management so-
lution for pack integration
-
As little as
12
square inch of
PCB for complete circuit
-
Lowoperatingcurrent (120
μ
A
typical)
-
Less than 100nA of data
retention current
High-speed (5kb/s) single-wire
communication interface (HDQ
bus) for critical battery
parameters
Communication with an external
charge controller such as the
bq2004
Direct drive of remaining capacity
LEDs
Automatic rate and temperature
compensation of measurements
16-pin narrow SOIC
General Description
The bq2014H NiCd/NiMH Gas
Gauge IC is intended for battery-
pack or in-system installation to
maintain an accurate record of
available battery capacity. The IC
monitors a voltage drop across a
sense resistor connected in series
between the negative battery termi-
nal and ground to determine
charge and discharge activity of
the battery. Compensations for bat-
tery temperature, self-discharge,
and rate of discharge are applied to
the charge counter to provide avail-
able capacity information across a
wide range of operating conditions.
Battery capacity is automatically re-
calibrated, or “l(fā)earned,” in the
course of a discharge cycle from full
to empty.
Nominal available capacity may be
directly indicated using a five-
segment LED display. The bq2014H
also supports a simple single-line
bidirectional serial link to an exter-
nal processor (common ground). The
5kb/s HDQ bus interface reduces
communications overhead in the
external microcontroller.
Internal registers include available
capacity and energy, temperature,
voltage and current, and battery
status. The external processor may
also overwrite some of the bq2014H
gas gauge data registers.
The bq2014H can operate from the
batteries in the pack. The REF out-
put and an external transistor allow
a simple, inexpensive voltage regu-
lator to supply power to the circuit
from the cells.
1
Preliminary
bq2014H
LCOM
LED common output
SEG
1
/PROG
1
LED segment 1/
program 1 input
SEG
2
/PROG
2
LED segment 2/
program 2 input
SEG
3
/PROG
3
LED segment 3/
program 3 input
SEG
4
/PROG
4
LED segment 4/
program 4 input
SEG
5
/PROG
5
LED segment 5/
program 5 input
DONE
Charge complete
input
1
PN20140H..eps
16-Pin Narrow SOIC
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LCOM
SEG1/PROG1
SEG2/PROG2
SEG3/PROG3
SEG4/PROG4
SEG5/PROG5
DONE
VSS
VCC
REF
NC
HDQ
RBI
SB
DISP
SR
V
SS
System ground
SR
Sense resistor input
DISP
Display control input
SB
Battery sense input
RBI
Register backup input
HDQ
Serial communications
input/output
NC
No connect
REF
Voltagereferenceoutput
V
CC
Supply voltage
Pin Connections
SLUS030–JUNE 1999
Low-Cost NiCd/NiMH Gas Gauge IC
Pin Names
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ2014HEVM-001 | 功能描述:電源管理IC開發(fā)工具 BQ2014H Eval Kit for NiMH 10.8V RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| BQ2014HSN | 功能描述:電池管理 NiCd/NiMH Gas Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| BQ2014HSN-A309 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Cost NiCd/NiMH Gas Gauge IC |
| BQ2014HSNG4 | 功能描述:電池管理 NiCd/NiMH Gas Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| BQ2014HSNTR | 功能描述:電池管理 NiCd/NiMH Gas Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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