DV2002L2_14 Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – Fast Charge Development System Control of LM317 Linear Regulator

DV2002L2/TL2
Fast Charge Development System
Control of LM317 Linear Regulator
Features
ä bq2002/T fast-charge control evaluation and
development
ä Charge current sourced from an on-board linear
regulator (up to 1.5A)
ä Fast charge of 4, 5, 6, 8, and 10 NiCd or NiMH cells
(contact Benchmarq for other cell counts)
ä Fast-charge termination by negative delta voltage
(-∆V) or peak voltage detect (bq2002) or ∆T/∆t
(bq2002T)
ä Maximum temperature and maximum time safety
terminations
ä -∆V/peak voltage detect, hold-off, top-off, maximum
time, and number of cells are jumper-configurable
ä Inhibit fast charge by a logic-level input
General Description
The DV2002L2/TL2 Development System provides a de-
velopment environment for the bq2002 and bq2002T
Fast-Charge ICs. The DV2002L2/TL2 incorporates a
bq2002/T and a linear regulator to provide fast charge
control for 4 to 10 NiCd or NiMH cells.
The fast charge is terminated by any of the following:
∆T/∆t, maximum temperature, maximum time, or an in-
hibit command for the bq2002T; or -∆V/peak voltage,
maximum temperature, maximum time, and inhibit
command for the bq2002. Jumper settings select the
top-off and maximum time limits.
The user provides a power supply and batteries. The
user configures the DV2002L2/TL2 for the number of
cells and maximum charge time (with or without top-
off).
Please review the bq2002T or bq2002 data sheet before
using the DV2002L2/TL2 board.
Connection Descriptions
JP4
THERM
BAT–
BAT+
GND
DC
JP3 NOC
JP2 INH
JP1 TM
Thermistor connection
Battery ground
Positive battery terminal
Ground from charger supply
DC input from charger supply
Select number of cells
Inhibit input
Timer, etc. Setting
3/98
Rev. C Board
1