BC3770 Datasheet, PDF (12/45 Pages) Freescale Semiconductor, Inc – 2.0 A Switch-Mode Charger

Table 4. BC3770 Electrical Characteristics (continued)
Characteristics noted under conditions: V_VBUS = 5.0 V, V_BATREG = 3.7 V, V_VIO = 1.8 V, C_VBUS = C_PMID = 2.2 F, C_VSYS = 10 F,
C_CHGOUT = 4.7 F, C_VL = 1.0 F, L = 1.0 H, T_A = - 40 °C to 85 °C *). Typical values are at T_A = 25°C, unless otherwise noted. ⁽⁶⁾
Symbol
Characteristic
Min
Typ
Max
Unit
Notes
Weak Battery Detection
V_{WEAK_L}
Weak Battery Programmable Range
• BATREG falling, programmable in 50 mV steps
3.0
—
Weak Battery Threshold Accuracy
-5.0
—
V_{WEAK_HYS}
Weak Battery Voltage Hysteresis
• BATREG rising
—
100
I²C Interface ^{(15), (16)}
V_{IH_I2C}
I²C Logic Input High Threshold Voltage
• SDA, SCL
V_{IL_I2C}
I²C Logic Input Low Threshold Voltage
• SDA, SCL
V_{OL_I2C}
I²C Logic Output Low Voltage
• SDA at 3.0 mA sink current
1.2
—
—
—
—
—
f_SCL
SCL Clock Frequency
0.0
—
Notes
15. Guaranteed by design, characterization, and correlation with process controls. Not fully tested in production.
16. The regulation in boost is only guaranteed in the operation range.
3.75
0.4
—
—
0.4
0.4
400
V
%
(15)
mV
V
V
V
kHz
Analog Integrated Circuit Device Data
Freescale Semiconductor
BC3770
12