參數資料
型號： bq2945
廠商： Benchmark Technology Group
英文描述： Gas Gauge IC with SMBus Interface(Gas Gauge芯片（帶SMBus 接口）)
中文描述： 氣體計IC，帶有SMBus接口（電量監(jiān)測計芯片（帶的SMBus接口））
文件頁數： 28/32頁
文件大?。?/td> 256K
代理商： BQ2945
28
bq2945
Recommended DC Operating Conditions
(TA= TOPR)
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
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
V
REF
= 3V
I
CC
Normal operation
-
90
135
μ
A
V
CC
= 3.0V
-
120
180
μ
A
V
CC
= 4.25V
-
170
250
μ
A
V
CC
= 5.5V
V
SB
Battery input
0
-
V
CC
V
R
SBmax
SB input impedance
10
-
-
M
0 < V
SB
< V
CC
I
DISP
DISP input leakage
-
-
5
μ
A
V
DISP
= V
SS
I
LVOUT
V
OUT
output leakage
-0.2
-
0.2
μ
A
EEPROM off
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
-200mV < V
SR
< V
CC
V
IH
Logic input high
0.5
V
CC
-
V
CC
V
ESCL, ESDA
1.4
-
5.5
V
SMBC, SMBD
V
IL
Logic input low
0
-
0.3
V
CC
V
ESCL, ESDA
-0.5
0.6
V
SMBC, SMBD
V
OL
Data, clock output low
-
-
0.4
V
I
OL
=350
μ
A, SMBC, SMBD
I
OL
Sink current
100
-
350
μ
A
V
OL
≤
0.4V, SMBC, SMBD
V
OLSL
LED
X
, CP
1
, CP
2
output low,
low V
CC
-
0.1
-
V
V
CC
= 3V, I
OLS
≤
1.75mA
LED
1
–LED
5
, CP
1
, CP
2
V
OLSH
LED
X
, CP
1
, CP
2
output low,
high V
CC
-
0.4
-
V
V
CC
= 6.5V, I
OLS
≤
11.0mA
LED
1
–LED
5
, CP
1
, CP
2
V
OHVL
V
OUT
output, low V
CC
V
CC
- 0.3
-
-
V
V
CC
= 3V, I
VOUT
= -5.25mA
V
OHVH
V
OUT
output, high V
CC
V
CC
- 0.6
-
-
V
V
CC
= 6.5V, I
VOUT
= -33.0mA
I
VOUT
V
OUT
source current
-33
-
-
mA
At V
OHVH
= V
CC
- 0.6V
I
OLS
LED
X
, CP
1
, CP
2
sink current
11.0
-
mA
At V
OLSH
= 0.4V
Note:
All voltages relative to V
SS
.
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相關代理商/技術參數
參數描述
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