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| BQ27750 Datasheet, PDF (8/34 Pages) Texas Instruments – Impedance Track Battery Gas Gauge and Protection Solution for 1-Series Cell Li-Ion Battery Packs | |||
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bq27750
SLUSCM7 â JUNE 2017
www.ti.com
6.16 High-Frequency Oscillator
Typical values stated where TA = 25ºC, Min/Max values stated where TA = â40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP
MAX
fHFO
Operating frequency
fHFO(ERR) Frequency error
tHFO(SU) Start-up time
TA = â20°C to 70°C, includes frequency drift
TA = â40°C to 85°C, includes frequency drift
TA = â20°C to 85°C, Oscillator frequency within
+/â3% of nominal, CLKCTL[HFRAMP] = 1
Oscillator frequency within +/â3% of nominal,
CLKCTL[HFRAMP] = 0
â2.5%
â3.5%
16.78
±0.25%
±0.25%
2.5%
3.5%
4
100
UNIT
MHz
ms
µs
6.17 Low-Frequency Oscillator
Typical values stated where TA = 25ºC, Min/Max values stated where TA = â40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP MAX
fLFO
fLFO(LP)
Operating frequency
Operating frequency in
low power mode
262.144
247
fLFO(ERR) Frequency error
fLFO(LPERR)
Frequency error in low
power mode
TA = â20°C to 70°C, includes frequency drift
TA = â40°C to 85°C, includes frequency drift
â1.5%
â2.5%
â5%
±0.25%
±0.25%
1.5%
2.5%
5%
fLFO(FAIL)
Failure detection
frequency
30
80
100
UNIT
kHz
kHz
kHz
6.18 Voltage Reference 1
Typical values stated where TA = 25ºC, Min/Max values stated where TA = â40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP
MAX UNIT
VREF1
Internal reference
voltage
TA = 25°C, after trim
1.215
1.220 1.225 V
VREF1(DRIFT)
Internal reference
voltage drift
TA = 0°C to 60°C, after trim
TA = â40°C to 85°C, after trim
±50
PPM/°C
±80
6.19 Voltage Reference 2
Typical values stated where TA = 25ºC, Min/Max values stated where TA = â40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP
MAX UNIT
VREF2
Internal reference
voltage
TA = 25°C, after trim
1.215
1.220 1.225 V
VREF2(DRIFT)
Internal reference
voltage drift
TA = 0°C to 60°C, after trim
TA = â40°C to 85°C, after trim
±50
PPM/°C
±80
6.20 Instruction Flash
Typical values stated where TA = 25ºC, Min/Max values stated where TA = â40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP MAX
Data retention
10 (1)
UNIT
Years
Flash programming
write cycles
1000 (1)
Cycles
tPROGWORD
Word programming
time
TA = â40°C to 85°C
40 µs
tMASSERASE
tPAGEERASE
IFLASHREAD
Mass-erase time
Page-erase time
Flash-read current
TA = â40°C to 85°C
TA = â40°C to 85°C
TA = â40°C to 85°C
40 ms
40 ms
2 mA
(1) Assured by design
8
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