BQ3050 Datasheet, PDF (10/28 Pages) Texas Instruments – 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq3050
SLUSA92A – JANUARY 2011 – REVISED JUNE 2011
www.ti.com
ELECTRICAL CHARACTERISTICS: LED5, LED4, LED3, LED2, LED1
Typical values stated where TA = 25ºC and VCC = 14.4 V, Min/Max values stated where T_A= –40ºC to 85ºC and VCC = 3.8 V
to 25 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
C_IN
Input capacitance
I_LKG
Input leakage current
VOL = 0.4 V,
3 mA setting
5
pF
1
μA
2.5
3.5
4.5
mA
I_OL
Low-level output current
VOL = 0.4 V,
4 mA setting
3.0
4.5
6.0
mA
VOL = 0.4 V,
5 mA setting
3.5
5.5
7.5
mA
I_LEDx
Current matching between LEDx
0.1
mA
ELECTRICAL CHARACTERISTICS: COULOMB COUNTER
Typical values stated where TA = 25ºC and VCC = 14.4 V, Min/Max values stated where T_A= –40ºC to 85ºC and VCC = 3.8 V
to 25 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V_IN
Input voltage range
Conversion time
SRP – SRN
Single conversion
–0.20
0.25
V
250
ms
Resolution (no missing codes)
16
Bits
Effective resolution
Single conversion, signed
15
Bits
Offset error
Post calibrated
10
µV
Offset error drift
0.3
0.5
µV/°C
Full-scale error
–0.8%
0.2%
0.8%
Full-scale error drift
150
PPM/°C
Effective input resistance
2.5
mΩ
ELECTRICAL CHARACTERISTICS: VC1, VC2, VC3, VC4
Typical values stated where TA = 25ºC and VCC = 14.4 V, Min/Max values stated where T_A= –40ºC to 85ºC and VCC = 3.8 V
to 25 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input voltage range
VC4 – VC3, VC3 – VC2, VC2 –
VC1, VC1 – VSS
–0.20
8
V
V_IN
Conversion time
Single conversion
Resolution (no missing codes)
32
ms
16
Bits
Effective resolution
Single conversion, signed
15
Bits
R_(BAL)
R_DS(ON) for internal FET at V_DS >
2V
R_DS(ON) for internal FET at V_DS >
4V
V_DS = VC4 – VC3, VC3 – VC2,
VC2 – VC1, VC1 – VSS
V_DS = VC4 – VC3, VC3 – VC2,
VC2 – VC1, VC1 – VSS
200
310
430
Ω
60
125
230
Ω
ELECTRICAL CHARACTERISTICS: TS1, TS2
Typical values stated where TA = 25ºC and VCC = 14.4 V, Min/Max values stated where T_A= –40ºC to 85ºC and VCC = 3.8 V
to 25 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
R
Internal Pull Up Resistor
16.5
17.5
19.0
KΩ
R_DRIFT
Internal Pull Up Resistor Drift From
25°C
200
PPM/°C
R_PAD
Internal Pin Pad resistance
84
Ω
10
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