Electronic Components Datasheet Search
English 中文版
Manufacturer Upload
Part Name:
 
Description:
L78M12AC  GAL22V10-15  GAL22V10-20LJC  GAL22V10-30LJI  GAL22V10-15LVM  M128TAN  GAL22V10-30LNI  M128TCN  GAL22V10-30LJC  GAL22V10-30LJM  
BQ2004E Fast-Charge ICs
Prototype PCB
Part No.:   BQ2004E
Download: Download   Right selection Save Target As
View Datasheet (Html)   No need to install PDF reader software
Description:   Fast-Charge ICs
File Size :   295 K    
Page : 19 Pages
Logo:   
Maker   TI [ TEXAS INSTRUMENTS ]http://www.ti.com
Buy Now :   
  BQ2004E Datasheet PDF page 1 BQ2004E Datasheet PDF page 3 BQ2004E Datasheet PDF page 4 BQ2004E Datasheet PDF page 5 BQ2004E Datasheet PDF page 6 BQ2004E Datasheet PDF page 7 BQ2004E Datasheet PDF page 8 BQ2004E Datasheet PDF page 9  
100%
bq2004E/H
Pin Descriptions
DCMD
Discharge-before-charge control input
The DCMD input controls the conditions
that enable discharge-before-charge. DCMD
is pulled up internally. A negative-going
pulse on DCMD initiates a discharge to end-
of-discharge voltage (EDV) on the BAT pin,
followed by a new charge cycle start. Tying
D C MD to ground e nabl es auto m ati c
discharge-before-charge on every new charge
cycle start.
DSEL
Display select input
This three-state input configures the charge
status display mode of the LED
1
and LED
2
out-
puts and can be used to disable top-off and
pulsed-trickle. See Table 2.
VSEL
Voltage termination select input
This three-state input controls the voltage-
ter m in at io n techni que use d by the
bq2004E/H. When high, PVD is active.
When floating, -∆V is used. When pulled low,
both PVD and -∆V are disabled.
DIS
TM
1
TM
2
Timer mode inputs
TM
1
and TM
2
are three-state inputs that
configure the fast charge safety timer, voltage
termination hold-off time, “top-off ”, and
trickle charge control. See Table 1.
TCO
Temperature cut-off threshold input
Input to set maximum allowable battery
temperature. If the potential between TS
and SNS is less than the voltage at the TCO
input, then fast charge or top-off charge is ter-
minated.
TS
Temperature sense input
Input, referenced to SNS, for an external
thermister monitoring battery temperature.
BAT
Battery voltage input
BAT is the battery voltage sense input, refer-
enced to SNS. This is created by a high-
impedance resistor-divider network con-
nected between the positive and the negative
terminals of the battery.
MOD is a push-pull output that is used to
control the charging current to the battery.
MOD switches high to enable charging cur-
rent to flow and low to inhibit charging
current flow.
Discharge control output
Push-pull output used to control an external
transistor to discharge the battery before
charging.
INH
Charge inhibit input
When low, the bq2004E/H suspends all
charge actions, drives all outputs to high im-
pedance, and assumes a low-power opera-
tional state. When transitioning from low to
high, a new charge cycle is started.
SNS
Charging current sense input
SNS controls the switching of MOD based on
an external sense resistor in the current
path of the battery. SNS is the reference po-
tential for both the TS and BAT pins. If
SNS is connected to V
SS
, then MOD switches
high at the beginning of charge and low at
the end of charge.
LED
1
LED
2
Charge status outputs
Push-pull outputs indicating charging
status. See Table 2.
Vss
V
CC
Ground
V
CC
supply input
5.0V,
±10%
power input.
MOD
Charge current control output
2
Home - IC Supply - Link
Copyright© 2001 - 2014 ICPDF All Rights Reserved ICPDF.COM

粤公网安备 44030402000629号


粤ICP备13051289号-7