BQ27750 Datasheet, PDF (11/34 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 – JUNE 2017
N-CH FET Drive (CHG, DSG) (continued)
Typical values stated where T_A = 25ºC, Min/Max values stated where T_A = –40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP
MAX
t_F
Fall time
V_DSG from V_DSG(ON)(TYP) to 1 V, V_BAT ≥ 2.2 V, C_L = 4.7 nF
between DSG and PACK, 5.1 kΩ between DSG and C_L,
10 MΩ between PACK and DSG
V_CHG from V_CHG(ON)(TYP) to 1 V, V_BAT ≥ 2.2 V, C_L = 4.7 nF
between CHG and BAT, 5.1 kΩ between CHG and C_L, 10
MΩ between BAT and CHG
40
300
40
200
UNIT
µs
6.25 I²C Interface I/O
Typical values stated where T_A = 25ºC, Min/Max values stated where T_A = –40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN TYP
MAX
V_IH
Input voltage high SCL, SDA, V_REG = 1.8 V (STANDARD and FAST modes) 0.7 × V_REG
V_IL
Input voltage low
SCL, SDA, V_REG = 1.8 V (STANDARD and FAST modes)
–0.5
SCL, SDA, V_REG = 1.8 V, I_OL = 3 mA (FAST mode)
V_OL
Output low voltage _{SCL, SDA, VREG > 2.0 V, IOL = 3 mA (STANDARD and}
FAST modes)
0.3 × V_REG
0.2 × V_REG
0.4
C_IN
Input capacitance
I_LKG
Input leakage
current
10
1
R_PD
Pull-down resistance
3.3
UNIT
V
V
V
V
pF
µA
kΩ
6.26 I²C Interface Timing
Typical values stated where T_A = 25ºC, Min/Max values stated where T_A = –40ºC to 85ºC (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
NOM
MAX
t_R
t_F
t_HIGH
t_LOW
t_SU(START)
Clock rise time
10% to 90%
Clock fall time
90% to 10%
Clock high period
Clock low period
Repeated start setup
time
300
300
600
1.3
600
t_d(START)
Start for first falling
edge to SCL
600
t_SU(DATA) Data setup time
100
t_HD(DATA) Data hold time
0
t_SU(STOP) Stop setup time
600
Bus free time
t_BUF
between stop and
1.3
start
f_SW
Clock operating
frequency
SLAVE mode, SCL 50% duty cycle
400
UNIT
ns
ns
ns
µs
ns
ns
ns
µs
ns
µs
kHz
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