BQ29209-Q1 Datasheet, PDF (5/23 Pages) Texas Instruments – Voltage Protection with Automatic Cell Balance

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bq29209-Q1
SLUSC62A – JUNE 2015 – REVISED MARCH 2016
Electrical Characteristics (continued)
Typical values stated where T_A = 25°C and VDD = 7.2 V. Minimum and maximum values stated where T_A = –40°C to 105°C
and VDD = 4 V to 10 V (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
X_{DELAY_CTM} ⁽¹⁾
Overvoltage delay time
scale factor in Customer
Test Mode
0.08
s/µF
I_CD(CHG)
Overvoltage detection
charging current
150
nA
I_CD(DSG)
Overvoltage detection
discharging current
60
µA
Overvoltage detection
V_CD
external capacitor
comparator threshold
1.2
V
I_CC
V_OUT
I_OH
I_OL
I_{OH_ZV}
Supply current
(VC2–VC1) = (VC1–GND) = 3.5 V (See Figure 7.)
3 6 µA
(VC2–VC1) or (VC1–GND) > V_PROTECT,
VDD = 10 V, I_OH = 0
6 8.25 9.5 V
(VC2–VC1) or (VC1–GND) = V_PROTECT, VDD = V_PROTECT,
I_OH = –100 µA, T_A = 0°C to 60°C
1.75 2.5
V
OUT pin drive voltage
(VC2–VC1) and (VC1–GND) < V_PROTECT ,
I_OL = 100 µA, T_A = 25°C
200 mV
(VC2–VC1) and (VC1–GND) < V_PROTECT ,
I_OL = 0 µA, T_A = 25°C
0 10 mV
VC2 = VC1 = VDD = 4 V, I_OL = 100 µA
200 mV
High-level output current
OUT = 1.75 V, (VC2–VC1) or (VC1–GND) = V_PROTECT, VDD
= V_PROTECT to 10 V, T_A = 0°C to 60°C
–100
µA
Low-level output current
OUT = 0.05 V, (VC2–VC1) or (VC1–GND) < V_PROTECT, VDD
= V_PROTECT to 10 V, T_A = 0°C to 60°C
30
85 µA
High-level short-circuit
output current
OUT = 0 V, (VC2–VC1) = (VC1–GND) = V_PROTECT
VDD = 4 to 10 V
–8 mA
I_IN
V_{MM_DET_ON}
Input current at VCx pins
Cell mismatch detection
threshold for turning ON
Measured at VC1, (VC2–VC1) = (VC1–GND) = 3.5 V,
T_A = 0°C to 60°C (See Figure 7.)
Measured at VC2, (VC2–VC1) = (VC1–GND) = 3.5 V,
T_A = 0°C to 60°C (See Figure 7.)
(VC2–VC1) versus (VC1–GND) and vice-versa when cell
balancing is enabled. VC2 = VDD = 7.6 V
–0.2
0.2 µA
2.5 µA
17 30 45 mV
V_{MM_DET_OFF}
Cell mismatch detection Delta between (VC2–VC1) and (VC1–GND) when cell
threshold for turning OFF balancing is disabled. VC2 = VDD = 7.6 V
–9
0
9 mV
V_{CB_EN_ON}
Cell balance enable ON
threshold
Active LOW pin at CB_EN
1V
V_{CB_EN_OFF}
Cell balance enable OFF
threshold
Active HIGH at CB_EN
2.2
V
I_{CB_EN}
Cell balance enable ON
input current
CB_EN = GND (See Figure 8.)
0.2 µA
R_CB1
Internal cell balance
switch resistance
CB_EN = GND
Ω
R_CB2
Internal cell balance
switch resistance
CB_EN = GND
Ω
(1) Specified by design. Not 100% tested in production.
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