Datasheet

17
bq2014
DC Electrical Characteristics (T
A
= T
OPR
)
Symbol Parameter Minimum Typical Maximum Unit Notes
V
CC
Supply voltage 3.0 4.25 6.5 V
V
CC
excursion from < 2.0V to
≥
3.0V initializes the unit.
V
OS
Offset referred to V
SR
-
±50 ±150 µV
DISP
= V
CC
V
REF
Reference at 25°C 5.7 6.0 6.3 V I
REF
= 5
µ
A
Reference at -40°C to +85°C 4.5 - 7.5 V I
REF
= 5
µ
A
R
REF
Reference input impedance 2.0 5.0 - M
Ω
V
REF
= 3V
I
CC
Normal operation
- 90 135
µ
AV
CC
= 3.0V
- 120 180
µ
AV
CC
= 4.25V
- 170 250
µ
AV
CC
= 6.5V
V
SB
Battery input - - 2.4 V
R
SBmax
SB input impedance 10 - - M
Ω
0 < V
SB
< V
CC
I
DISP
DISP input leakage - - 5
µ
AV
DISP
= V
SS
I
LCOM
LCOM input leakage -0.2 - 0.2
µ
A DISP = V
CC
R
DQ
Internal pulldown 500 - - K
Ω
V
SR
Sense resistor input -0.3 - 2.0 V
V
SR
<V
SS
= discharge;
V
SR
> V
SS
= charge
R
SR
SR input impedance 10 - - M
Ω
-200mV < V
SR
< V
CC
V
IH
Logic input high V
CC
- 0.2 - - V PROG
1
–PROG
5
V
IL
Logic input low - - V
SS
+ 0.2 V PROG
1
–PROG
5
; note 2
V
IZ
Logic input Z float - float V PROG
1
–PROG
5
V
OLSL
SEG
X
output low, low V
CC
- 0.1 - V
V
CC
= 3V, I
OLS
≤
1.75mA
SEG
1
–SEG
5
V
OLSH
SEG
X
output low, high V
CC
- 0.4 - V
V
CC
= 6.5V, I
OLS
≤
11.0mA
SEG
1
–SEG
5
V
OHLCL
LCOM output high, low V
CC
V
CC
- 0.3 - - V V
CC
= 3V, I
OHLCOM
= -5.25mA
V
OHLCH
LCOM output high, high V
CC
V
CC
- 0.6 - - V V
CC
= 6.5V, I
OHLCOM
= -33.0mA
I
IH
PROG
1-5
input high current - 1.2 -
µ
AV
PROG
= V
CC
/2
I
IL
PROG
1-5
input low current - 1.2 -
µ
AV
PROG
= V
CC
/2
I
OHLCOM
LCOM source current -33 - - mA At V
OHLCH
= V
CC
- 0.6V
I
OLS
SEG
X
sink current - - 11.0 mA At V
OLSH
= 0.4V
I
OL
Open-drain sink current - - 5.0 mA
At V
OL
= V
SS
+ 0.3V
DQ, EMPTY, CHG
V
OL
Open-drain output low - - 0.5 V I
OL
≤
5mA, DQ, EMPTY
V
IHDQ
DQ input high 2.5 - - V DQ
V
ILDQ
DQ input low - - 0.8 V DQ
R
PROG
Soft pull-up or pull-down resis
-
tor value (for programming)
- - 200
K
Ω
PROG
1
–PROG
5
R
FLOAT
Float state external impedance - 5 - M
Ω
PROG
1
–PROG
5
Notes: 1. All voltages relative to V
SS
.
2. DONE must be pulled low for proper operation.