BQ4050 Datasheet, PDF (14/53 Pages) Texas Instruments – CEDV Gas Gauge and Protection Solution

bq4050
SLUSC67A – MARCH 2016 – REVISED MARCH 2016
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6.22 Electrical Characteristics: TS1, TS2, TS3, TS4
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_IN
R_NTC(PU)
Input voltage
range
Internal pullup
resistance
TS1, TS2, TS3, TS4, V_BIAS = V_REF1
TS1, TS2, TS3, TS4, V_BIAS = V_REG
TS1, TS2, TS3, TS4
–0.2
–0.2
14.4
0.8 x V_REF1
V
0.8 x V_REG
18
21.6 kΩ
R_NTC(DRIFT)
Resistance drift
over temperature
TS1, TS2, TS3, TS4
–360
–280
–200 PPM/°C
6.23 Electrical Characteristics: PTC, PTCEN
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
R_PTC(TRIP)
V_PTC(TRIP)
I_PTC
PTC trip resistance
PTC trip voltage
Internal PTC
current bias
V_PTC(TRIP) = V_PTCEN – V_PTC
T_A = –40°C to 110°C
1.2
2.5
200
500
200
290
3.95 MΩ
890 mV
350 nA
t_PTC(DELAY) PTC delay time
T_A = –40°C to 110°C
40
80
145 ms
6.24 Electrical Characteristics: Internal 1.8-V LDO
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_REG
ΔV_O(TEMP)
Regulator voltage
Regulator output
over temperature
ΔV_REG/ΔT_A, I_REG = 10 mA
1.6
1.8
±0.25%
2.0
V
ΔV_O(LINE)
ΔV_O(LOAD)
I_REG
Line regulation
Load regulation
Regulator output
current limit
ΔV_REG/ΔV_BAT, V_BAT = 10 mA
ΔV_REG/ΔI_REG, I_REG = 0 mA to 10 mA
V_REG = 0.9 x V_REG(NOM), V_IN > 2.2 V
–0 .6%
–1.5%
20
0.5%
1.5%
mA
I_SC
Regulator short-
circuit current limit
V_REG = 0 x V_REG(NOM)
25
40
55 mA
PSRR_REG
Power supply
rejection ratio
ΔV_BAT/ΔV_REG, I_REG = 10 mA ,V_IN > 2.5 V, f = 10 Hz
40
dB
V_SLEW
Slew rate
enhancement
voltage threshold
V_REG
1.58
1.65
V
6.25 Electrical Characteristics: High-Frequency Oscillator
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
f_HFO
f_HFO(ERR)
t_HFO(SU)
Operating frequency
Frequency error
Start-up time
T_A = –20°C to 70°C, includes frequency drift
T_A = –40°C to 85°C, includes frequency drift
T_A = –20°C to 85°C, oscillator frequency within
+/–3% of nominal
oscillator frequency within +/–3% of nominal
–2.5%
–3.5%
16.78
±0.25%
±0.25%
2.5%
3.5%
4
100
MHz
ms
µs
14
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