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| BQ40Z50-R2 Datasheet, PDF (14/51 Pages) Texas Instruments – 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager | |||
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bq40z50-R2
SLUSCS4 â JUNE 2017
www.ti.com
7.23 PTC, PTCEN
Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = â40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
RPTC(TRIP)
PTC trip
resistance
1.2
2.5
3.95 MΩ
VPTC(TRIP)
IPTC
PTC trip voltage
Internal PTC
current bias
VPTC(TRIP) = VPTCEN â VPTC
TA = â40°C to 110°C
200
500
200
290
890 mV
350 nA
tPTC(DELAY) PTC delay time TA = â40°C to 110°C
40
80
145 ms
7.24 Internal 1.8-V LDO
Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = â40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
VREG
ÎVO(TEMP)
Regulator voltage
Regulator output
over temperature
ÎVREG/ÎTA, IREG = 10 mA
1.6
1.8
±0.25%
2.0
V
ÎVO(LINE)
ÎVO(LOAD)
IREG
Line regulation
Load regulation
Regulator output
current limit
ÎVREG/ÎVBAT, VBAT = 10 mA
ÎVREG/ÎIREG, IREG = 0 mA to 10 mA
VREG = 0.9 Ã VREG(NOM), VIN > 2.2 V
â0 .6%
â1.5%
20
0.5%
1.5%
mA
ISC
Regulator short-
circuit current limit
VREG = 0 Ã VREG(NOM)
25
40
55 mA
PSRRREG
Power supply
rejection ratio
ÎVBAT/ÎVREG, IREG = 10 mA ,VIN > 2.5 V, f = 10 Hz
40
dB
VSLEW
Slew rate
enhancement
voltage threshold
VREG
1.58
1.65
V
7.25 High-Frequency Oscillator
Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = â40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
fHFO
fHFO(ERR)
tHFO(SU)
Operating frequency
Frequency error
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
oscillator frequency within +/â3% of nominal
â2.5%
â3.5%
16.78
±0.25%
±0.25%
2.5%
3.5%
4
100
MHz
ms
µs
7.26 Low-Frequency Oscillator
Typical values stated where TA = 25°C and VCC = 14.4 V, Min/Max values stated where TA = â40°C to 85°C and VCC =
2.2 V to 26 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
fLFO
fLFO(ERR)
fLFO(FAIL)
Operating frequency
Frequency error
Failure detection
frequency
TA = â20°C to 70°C, includes frequency drift
TA = â40°C to 85°C, includes frequency drift
â1.5%
â2.5
30
262.144
±0.25%
±0.25
80
kHz
1.5%
2.5
100 kHz
14
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