BC3770 datasheet(12/45 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

BC3770

Weak Battery Detection

VWEAK_L

Weak Battery Programmable Range

• BATREG falling, programmable in 50 mV steps

3.0

—

3.75

Weak Battery Threshold Accuracy

-5.0

—

0.4

(15)

VWEAK_HYS

Weak Battery Voltage Hysteresis

• BATREG rising

—

100

—

I2C Interface (15), (16)

VIH_I2C

I2C Logic Input High Threshold Voltage

•SDA, SCL

1.2

—

VIL_I2C

I2C Logic Input Low Threshold Voltage

•SDA, SCL

—

0.4

VOL_I2C

I2C Logic Output Low Voltage

•SDA at 3.0 mA sink current

—

0.4

fSCL

SCL Clock Frequency

0.0

—

400

kHz

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.

Table 4. BC3770 Electrical Characteristics (continued)

Characteristics noted under conditions: VVBUS = 5.0 V, VBATREG = 3.7 V, VVIO = 1.8 V, CVBUS = CPMID = 2.2 F, CVSYS = 10 F,

CCHGOUT = 4.7 F, CVL = 1.0 F, L = 1.0 H, TA = - 40 °C to 85 °C *). Typical values are at TA = 25°C, unless otherwise noted. (6)

Symbol

Characteristic

Min

Typ

Max

Unit

Notes

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