BQ40Z50-R2 Datasheet, PDF (11/51 Pages) Texas Instruments – 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

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bq40z50-R2
SLUSCS4 – JUNE 2017
7.13 LEDCNTLA, LEDCNTLB, LEDCNTLC
Typical values stated where T_A = 25°C and VCC = 14.4 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_IH
High-level input
V_IL
Low-level input
V_OH
Output voltage high V_BAT > 3.0 V, I_OH = –22.5 mA
1.45
V_BAT –
1.6
V
0.55 V
V
V_OL
Output voltage low
I_OL = 1.5 mA
I_SC
High level output
current protection
0.4 V
–30
–45
–6 0 mA
I_OL
Low level output
current
V_BAT > 3.0 V, V_OH = 0.4 V
15.75
22.5
29.25 mA
I_LEDCNTLx
Current matching
between LEDCNTLx
V_BAT = V_LEDCNTLx + 2.5 V
±1%
C_IN
I_LKG
f_LEDCNTLx
Input capacitance
Input leakage current
Frequency of LED
pattern
20
pF
1 µA
124
Hz
7.14 Coulomb Counter
Typical values stated where T_A = 25°C and VCC = 14.4 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
Input voltage range
–0.1
0.1 V
Full scale range
Integral nonlinearity⁽¹⁾
16-bit, best fit over input voltage range
–V_REF1/10
±5.2
V_REF1/10
±22.3
V
LSB
Offset error
16-bit, Post-calibration
±5
±10 µV
Offset error drift
15-bit + sign, Post-calibration
0.2
0.3 µV/°C
Gain error
15-bit + sign, over input voltage range
±0.2%
±0.8% FSR
Gain error drift
15-bit + sign, over input voltage range
150 PPM/°C
Effective input resistance
2.5
MΩ
(1) 1 LSB = V_REF1/(10 × 2^N) = 1.215/(10 × 2¹⁵) = 3.71 µV
7.15 CC Digital Filter
Typical values stated where T_A = 25°C and VCC = 14.4 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
Conversion time
Single conversion
250
ms
Effective resolution
Single conversion
15
Bits
7.16 ADC
Typical values stated where T_A = 25°C and VCC = 14.4 V, Min/Max values stated where T_A = –40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
Input voltage range
Full scale range
Integral nonlinearity⁽¹⁾
Internal reference (V_REF1)
External reference (V_REG)
V_FS = V_REF1 or V_REG
16-bit, best fit, –0.1 V to 0.8 × V_REF1
16-bit, best fit, –0.2 V to –0.1 V
–0.2
–0.2
–V_FS
1
V
0.8 × V_REG
V_FS
V
±6.6
LSB
±13.1
(1) 1 LSB = V_REF1/(2^N) = 1.225/(2¹⁵) = 37.4 µV (when t_CONV = 31.25 ms)
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