bq2002T

Features: · Fast charge of nickel cadmium or nickel-metal hydride batteries· Direct LED output displays charge status· Fast-charge termination by rate of rise of temperature, maximum voltage, maximum temperature, and maximum time· Internal band-gap voltage reference· Optional top-off charge (...

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SeekIC No. : 004301114 Detail

bq2002T: Features: · Fast charge of nickel cadmium or nickel-metal hydride batteries· Direct LED output displays charge status· Fast-charge termination by rate of rise of temperature, maximum voltage, max...

floor Price/Ceiling Price

Part Number:
bq2002T
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/7/15

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Product Details

Description



Features:

· Fast charge of nickel cadmium or nickel-metal hydride batteries
· Direct LED output displays charge status
· Fast-charge termination by
  rate of rise of temperature,
  maximum voltage, maximum
  temperature, and maximum time
· Internal band-gap voltage reference
· Optional top-off charge (bq2002T only)
· Selectable pulse-trickle charge rates (bq2002T only)
· Low-power mode
· 8-pin 300-mil DIP or 150-mil SOIC



Pinout

  Connection Diagram


Specifications

Symbol Parameter Minimum Maximum Unit Conditions
VCC DC voltage applied on VCC relative to VSS -0.3 +7.0 V  
VT DC voltage applied on any pin excluding VCC
relative to VSS
-0.3 +7.0 V  
TOPR Operating temperature 0 +70 °C Commercial
TSTG Storage temperature -40 +85 °C  
TBIAS Temperature under bias - +260 °C 10 sec max.
TSOLDER Soldering temperature -40 +85 °C  
Note: Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional operation
should be limited to the Recommended DC Operating Conditions detailed in this data sheet. Exposure to conditions
beyond the operational limits for extended periods of time may affect device reliability.



Description

The bq2002D/T Fast-Charge IC are low-cost CMOS battery-charge controllers able to provide reliable charge termination for both NiCd and NiMH battery applications. Controlling a current-limited or constant-current supply allows the bq2002D/T to be the basis for a cost-effective stand-alone or system-integrated charger. The bq2002D/T integrates 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 of bq2002T is initiated on application of the charging supply or battery replacement. 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: Rate of temperature rise  Maximum voltage Maximum temperature Maximum time After fast charge, the bq2002T optionally tops-off and pulse-trickles the battery per the pre-configured limits.

Fast charge of bq2002T may be inhibited using the INH pin. The bq2002D/T may be placed in low-standby-power mode to reduce system power consumption.




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