参数资料
型号: BQ2002EPNE4
厂商: Texas Instruments
文件页数: 1/15页
文件大小: 0K
描述: IC CONTROLLER FASTCHRGE 8-DIP
标准包装: 50
功能: 充电管理
电池化学: 镍镉(NiCd)、镍金属氢化物(NiMH)
电源电压: 4 V ~ 6 V
工作温度: 0°C ~ 70°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
配用: 296-9488-ND - EVAL MOD FOR BQ2002
bq2002E/G
NiCd/NiMH Fast-Charge Management ICs
Features
General Description
Fast charge is terminated by any of
?
Fast charge of nickel cadmium
or nickel-metal hydride batter-
The bq2002E and bq2002G Fast-
Charge ICs are low-cost CMOS bat-
the following:
n Peak voltage detection (PVD)
?
ies
Direct LED output displays
charge status
tery-charge controllers providing reli-
able charge termination for both NiCd
and NiMH battery applications. Con-
trolling a current-limited or con-
n
n
Negative delta voltage (- ? V)
Maximum voltage
?
?
?
?
?
?
Fast-charge termination by - ? V,
maximum voltage, maximum
temperature, and maximum
time
Internal band-gap voltage ref-
erence
Optional top-off charge
Selectable pulse trickle charge
rates
Low-power mode
8-pin 300-mil DIP or 150-mil
SOIC
stant-current supply allows t h e
bq2002E/G to be the basis for a cost-
effective stand-alone or system-inte-
grated charger. The bq2002E/G inte-
grates fast charge with optional top-off
and pulsed- trickle control in a single
IC for charging one or more NiCd or
NiMH battery cells.
Fast charge is initiated on application
of the charging supply or battery re-
placement. For safety, fast charge is
inhibited if the battery temperature
and voltage are outside configured
limits.
n Maximum temperature
n Maximum time
After fast charge, the bq2002E/G op-
tionally tops-off and pulse-trickles the
battery per the pre-configured limits.
Fast charge may be inhibited using
the INH pin. The bq2002E/G may
also be placed in low-standby-power
mode to reduce system power con-
sumption.
T h e bq2002E differs from t h e
bq2002G only in that a slightly dif-
ferent set of fast-charge and top-off
time limits is available. All differ-
ences between the two ICs are illus-
trated in Table 1.
Pin Connections
Pin Names
TM
Timer mode select input
TS
Temperature sense input
TM
LED
BAT
1
2
3
8
7
6
CC
INH
VCC
LED
BAT
V SS
Charging status output
Battery voltage input
System ground
V CC
INH
CC
Supply voltage input
Charge inhibit input
Charge control output
VSS
4
5
TS
8-Pin DIP or
Narrow SOIC
PN-200201.eps
bq2002E/G Selection Guide
Part No.
LBAT
TCO
HTF
LTF
- ? V PVD
Fast Charge
t MTO
Top-Off
Maintenance
bq2002E 0.175 ?
V CC
0.5 ?
V CC
0.6 ?
V CC
None
C/2
1C
200
80
None
C/16
C/32
C/32
2C
40
None
C/32
bq2002G 0.175 ?
V CC
0.5 ?
V CC
0.6 ?
V CC
None
C/2
1C
160
80
None
C/16
C/32
C/32
2C
40
None
C/32
SLUS132 - FEBRUARY 1999
1
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