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BQ2000SN-B5 Datasheet

  • BQ2000SN-B5

  • Programmable Multi-Chemistry Fast-Charge Management IC

  • 18頁

  • TI

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bq2000
Programmable Multi-Chemistry
Fast-Charge Management IC
Features
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Safe management of fast
charge for NiCd, NiMH, or Li-
Ion battery packs
High-frequency switching con-
troller for efficient and simple
charger design
Pre-charge qualification for
detecting shorted, damaged, or
overheated cells
Fast-charge termination by
peak voltage (PVD), minimum
current (Li-Ion), maximum
temperature, and maximum
charge time
Selectable top-off mode for
achieving maximum capacity in
NiMH batteries
Programmable trickle-charge
mode for reviving deeply dis-
charged batteries and for post-
charge maintenance
Built-in battery removal and
insertion detection
Sleep mode for low power
consumption
General Description
The bq2000 is a programmable,
monolithic IC for fast-charge manage-
ment of nickel cadmium (NiCd),
nickel metal-hydride (NiMH), or lith-
ium-ion (Li-Ion) batteries in single- or
multi-chemistry applications. The
bq2000 detects the battery chemistry
and proceeds with the optimal charg-
ing and termination algorithms. This
process eliminates undesirable under-
charged or overcharged conditions
and allows accurate and safe termi-
nation of fast charge.
Depending on the chemistry, the
bq2000 provides a number of charge
termination criteria:
n
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For safety, the bq2000 inhibits fast
charge until the battery voltage and
temperature are within user-defined
limits. If the battery voltage is
below the low-voltage threshold, the
bq2000 uses trickle-charge to
condition the battery. For NiMH
batteries, the bq2000 provides an
optional top-off charge to maximize
the battery capacity.
The integrated high-frequency com-
parator allows the bq2000 to be the
basis for a complete, high-efficiency
power-conversion circuit for both
nickel-based and lithium-based
chemistries.
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Peak voltage, PVD (for NiCd and
NiMH)
Minimum charging current (f or
Li-Ion)
Maximum temperature
Maximum charge time
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n
n
n
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Pin Connections
Pin Names
SNS
V
SS
Current-sense input
System ground
Charge-status
output
Battery-voltage
input
RC
V
CC
MOD
TS
Temperature-sense
input
Timer-program input
Supply-voltage input
Modulation-control
output
SNS
VSS
LED
BAT
1
2
3
4
8
7
6
5
MOD
VCC
RC
TS
LED
BAT
8-Pin DIP or Narrow SOIC
or
TSSOP
PN-2000.eps
SLUS138B鈥揊EBRUARY 2001 F
1

BQ2000SN-B5 產(chǎn)品屬性

  • 75

  • 集成電路 (IC)

  • PMIC - 電池管理

  • -

  • 充電管理

  • 鋰離子，鎳鎘，鎳氫

  • 4 V ~ 6 V

  • -20°C ~ 70°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

  • 296-30723-ND - EVAL MODULE FOR BQ2000296-9486-ND - EVAL MOD FOR BQ2000

  • 296-9314-5

BQ2000SN-B5相關(guān)型號PDF文件下載

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  • 英文版
    Programmable Multi-Chemistry Fast-Charge Management IC
    TI
  • 英文版
    Programmable Multi-Chemistry Fast-Charge Management IC
    TI [Texas ...
  • 英文版
    NiCd/NiMH Fast-Charge Management ICs
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