鉃?/div>
Fast charging and conditioning of
NiCd and NiMH batteries
-
Audible alarm for charge
completion and fault
conditions
Fast or Standard speed
charging
Top-off mode for NiMH
Charge rates from
C 8
to 2C
(30 minutes to 8 hours)
Negative delta voltage (-鈭哣)
Peak voltage detect (PVD)
Maximum voltage
Maximum time
Maximum temperature
General Description
The bq2007 is a highly integrated
monolithic CMOS IC designed to pro-
vide intelligent battery charging and
charge status monitoring for stand-
alone charge systems.
The bq2007 provides a wide variety of
charge status display formats. The
bq2007 internal charge status moni-
tor supports up to a seven-segment
bargraph or a single BCD digit dis-
play. The bargraph display indicates
up to seven monotonic steps, whereas
the BCD digit counts in ten steps of
10% increments. The bq2007 output
drivers can direct-drive either an
LCD or LED display.
Charge action begins either by appli-
cation of the charging supply or by
replacement of the battery pack. For
safety, charging is inhibited until
battery temperature and voltage are
within configured limits.
-
-
-
-
Precise charging independent
of battery pack number of cells
Discharge-before-charge on
demand
Pulse trickle charge
conditioning
Battery undervoltage and
overvoltage protection
鉃?/div>
Charge control flexibility
-
-
-
-
-
-
-
-
-
鉃?/div>
Charge termination by:
鉃?/div>
Built-in 10-step voltage-based
charge status monitoring
-
-
-
Charge status display options
include seven-segment
monotonic bargraph and fully
decoded BCD digit
Display interface options for
direct drive of LCD or LED
segments
Charger state status
indicators for pending,
discharge, charge, completion,
and fault
鉃?/div>
High-efficiency switch-mode de-
sign
Ideal for small heat-sensitive
enclosures
鉃?/div>
24-pin, 300-mil SOIC or DIP
Pin Connections
Pin Names
SEG
C
/
MSEL
SEG
B
SEG
A
Display output segment C/
driver mode select
Display output segment B
TS
Display output segment A
DIS
LED
1
LED
2
INH
COM
ALARM
TM
VSEL
FAST
DCMD
TCO
Charge status output 1
Charge status output 2
Charge inhibit input
Common LED/LCD output
Audio alarm output
Timer mode select
Voltage termination select
Fast charge rate select
Discharge command
Temperature cutoff
SEG
E
/
DSEL
2
SEG
D
/
DSEL
1
Display output segment E/
display select 2
Display output segment D/
display select 1
SEG
G
/
QDSEL
SEG
F
/
MULT
Display output segment G/
charge status display select
Display output segment F/
multi-cell pack select
V
SS
V
CC
MOD
System ground
5.0V
鹵
10% power
Modulation control
Discharge control
Temperature sense
SNS
BAT
Sense resistor input
Battery voltage
SEGC/MSEL
SEGB
SEGA
LED1
LED2
INH
COM
ALARM
TM
VSEL
FAST
DCMD
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
SEGD/DSEL1
SEGE/DSEL2
SEGF/MULT
SEGG/QDSEL
MOD
VCC
VSS
DIS
TS
BAT
SNS
TCO
24-Pin Narrow DIP
or SOIC
PN200701.eps
9/96 B
1
BQ2007S-相關(guān)型號PDF文件下載
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