BQ24257 Datasheet, PDF (8/45 Pages) Texas Instruments – 2A Single Input I2C, Standalone Switch-Mode Li-Ion Battery Charger with Integrated Current Sense Resistor

bq24257
bq24258
SLUSBG0B – FEBRUARY 2013 – REVISED JULY 2013
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ELECTRICAL CHARACTERISTICS (continued)
bq24257 App Circuit, V_UVLO < V_IN < V_OVP AND V_IN > V_BAT+V_SLP, T_J = 0°C – 125°C and T_J = 25°C for typical values (unless
otherwise noted)
PARAMETER
D+, D– DETECTION
I_{DP_SRC}
R_{DM_DWN}
V_{DP_LOW}
V_{DP_SRC}
D+ current source for DCD
D– pull-down resistance for DCD
D+ low comparator threshold for DCD
D+ source voltage for Primary
Detection
I_{DP_SRC_PD}
D+ source voltage output current for
Primary Detection
I_{DM_SINK}
V_{DAT_REF}
V_LGC
V_{DM_SRC}
D– sink current for Primary Detection
Primary Detection threshold
Primary Detection threshold
D– source voltage for Secondary
Detection
I_{DM_SRC_PD}
D– source voltage output current for
Secondary Detection
I_{DP_SINK}
D+ sink current for Secondary
Detection
V_{DAT_REF}
V_{ATT_LO}
Secondary Detection threshold
Apple/TomTom detection low
threshold
V_{ATT_HI}
Apple/TomTom detection high
threshold
C_I
Input Capacitance
I_{D_LKG}
Leakage Current into D+/D–
TEST CONDITIONS
DCD
DCD
DCD
Primary Detection
Primary Detection
Primary Detection
Primary Detection
Primary Detection
Secondary Detection
Secondary Detection
Secondary Detection
Secondary Detection
Apple, TomTom Detection
Apple, TomTom Detection
D– , switch open
D+, switch open
D–, switch open
D+, switch open
MIN
7
14.25
0.85
0.5
200
50
250
0.85
0.5
200
50
250
1.8
3.2
-1
-1
TYP
MAX UNIT
13
µA
24.8
kΩ
0.9
0.95
V
0.6
0.7
V
µA
100
150
µA
325
400 mV
0.9
0.95
V
0.6
0.7
V
µA
100
150
µA
325
400 mV
1.85
1.975
V
3.5
4.05
V
4.5
pF
4.5
1
µA
1
µA
8
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