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bq27500
bq27501
System-Side Impedance Track™ Fuel Gauge
SLUS785 – SEPTEMBER 2007
ADC (TEMPERATURE AND CELL MEASUREMENT) CHARACTERISTICS (continued)
T
= –40 C to 85 C, 2.4 V < V
A
PARAMETER
t
Conversion time
ADC_CONV
Resolution
V
Input offset
ADC_OS
Z
Effective input resistance (TS, RID
ADC1
[bq27501 only])
Z
Effective input resistance (BAT)
ADC2
I
Input Leakage Current
ADC_LKG
(1) Specified by design. Not tested in production.
3.9
DATA FLASH MEMORY CHARACTERISTICS
T
= –40 C to 85 C, 2.4 V < V
A
PARAMETER
t
Data retention
ON
Flash programming write-cycles
t
Word programming time
WORDPROG
I
Flash-write supply current
CCPROG
(1) Specified by design. Not production tested
2
3.10
I
C-COMPATIBLE INTERFACE COMMUNICATION TIMING CHARACTERISTICS
T
= –40 C to 85 C, 2.4 V < V
A
PARAMETER
t
SCL/SDA rise time
r
t
SCL/SDA fall time
f
t
SCL pulse width (high)
w(H)
t
SCL pulse width (low)
w(L)
t
Setup for repeated start
su(STA)
t
Start to first falling edge of SCL
d(STA)
t
Data setup time
su(DAT)
t
Data hold time
h(DAT)
t
Setup time for stop
su(STOP)
t
Bus free time between stop and start
BUF
f
Clock frequency
SCL
t
Bus error timeout
BUSERR
6
ELECTRICAL SPECIFICATIONS
< 2.6 V; Typical Values at T
CC
bq27500/1 not measuring cell voltage
(1)
bq27500/1 measuging cell voltage
(1)
< 2.6 V; Typical Values at T
CC
See
See
See
< 2.6 V; Typical Values at T
CC
Receive mode
Transmit mode
= 25 C and V
= 2.5 V (unless otherwise noted)
A
CC
TEST CONDITIONS
= 25 C and V
= 2.5 V (unless otherwise noted)
A
CC
TEST CONDITIONS
(1)
(1)
(1)
= 25 C and V
= 2.5 V (unless otherwise noted)
A
CC
TEST CONDITIONS
www.ti.com
MIN
TYP
MAX
UNIT
125
14
15
1
8
8
100
0.3
MIN
TYP
MAX
UNIT
(1)
10
Years
20,000
Cycles
2
ms
5
10
mA
MIN
TYP
MAX
UNIT
1
300
4
4.7
4.7
4
250
0
300
4
4.7
10
100
17.3
21.2
Submit Documentation Feedback
ms
bits
mV
M
M
k
μA
μs
ns
μs
μs
μs
μs
ns
ns
μs
μs
kHz
s
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