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BQ2002GSN Datasheet

  • BQ2002GSN

  • NiCd/NiMH Fast-Charge Management ICs

  • 13頁(yè)

  • TI

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bq2002E/G
NiCd/NiMH Fast-Charge Management ICs
Features
廬
Fast charge of nickel cadmium
or nickel-metal hydride batter-
ies
Direct LED output displays
charge status
Fast-charge termination by -鈭哣,
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
General Description
The bq2002E and bq2002G Fast-
Charge ICs are low-cost CMOS bat-
tery-charge controllers providing reli-
able charge termination for both NiCd
and NiMH battery applications. Con-
trolling a current-limited or con-
stant-current supply allows the
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.
Fast charge is terminated by any of
the following:
n
n
n
n
n
Peak voltage detection (PVD)
Negative delta voltage (-鈭哣)
Maximum voltage
Maximum temperature
Maximum time
廬
廬
廬
廬
廬
廬
廬
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.
The bq2002E d iffer s fr om th 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
TM
LED
BAT
VSS
1
2
3
4
8
7
6
5
CC
Pin Names
TM
LED
INH
VCC
TS
Timer mode select input
Charging status output
Battery voltage input
System ground
TS
V
CC
INH
CC
Temperature sense input
Supply voltage input
Charge inhibit input
Charge control output
BAT
V
SS
8-Pin DIP or
Narrow SOIC
PN-200201.eps
bq2002E/G Selection Guide
Part No.
LBAT
TCO
0.5
鈭?/div>
V
CC
0.5
鈭?/div>
V
CC
HTF
0.6
鈭?/div>
V
CC
0.6
鈭?/div>
V
CC
LTF
None
-鈭哣 PVD
Fast Charge
C/2
1C
2C
C/2
1C
2C
t
MTO
200
80
40
160
80
40
Top-Off
None
C/16
None
None
C/16
None
Maintenance
C/32
C/32
C/32
C/32
C/32
C/32
bq2002E 0.175
鈭?/div>
V
CC
bq2002G 0.175
鈭?/div>
V
CC
None
2/99
1

BQ2002GSN 產(chǎn)品屬性

  • 75

  • 集成電路 (IC)

  • PMIC - 電池管理

  • -

  • 充電管理

  • 鎳鎘（NiCd）、鎳金屬氫化物（NiMH）

  • 4 V ~ 6 V

  • 0°C ~ 70°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

  • 296-9488-ND - EVAL MOD FOR BQ2002

  • 296-9325-5

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