BK3266 Datasheet

v 0.5

© 2017 Beken Corporation

Proprietary and Confidential

Page 21 of 28

4.5.

BATTERY CHARGE

Parameter

Description

MIN

TYP

MAX

Unit

VCC5USB

Charger input voltage

4.75

5

5.75

V

I_trickle

Charge Current at trickle mode as

percent of fast charge mode

10

%

I_fast

Charge current at fast charge mode

40

220

mA

V_end(Need Calibrated)

VBAT voltage when Charge End

4.2

V

4.6.

Analog LDO/BUCK

System can choose the analog BUCK or LDO as the power supply of RF and Audio part.

Parameter

Description

MIN

TYP

MAX

Unit

Analog LDO

VDDANA

Analog LDO output voltage

1.6

1.8

2.4

V

Load Current

Load current

150

mA

Analog BUCK

VDDANA

Analog BUCK output voltage

1.6

1.8

2.4

V

Load Current

Load current

150

mA

Switching frequency

BUCK modulation frequency

0.5

1

6

MHz

4.7.

Digital LDO/BUCK

System can also choose the digital BUCK or LDO as the power supply for the Digital part.

Parameter

Description

MIN

TYP

MAX

Unit

Digital LDO

VDDDIG

Digital LDO output voltage

1

1.2

1.35

V

Load Current

Load current

40

mA

Digital BUCK

VDDDIG

Digital BUCK output voltage

1

1.2

1.35

V

Load Current

Load current

40

mA

Switching frequency

BUCK modulation frequency

0.5

1

6

MHz

4.8.

Crystal and Reference Clock

Parameter

Description

MIN

TYP

MAX

Unit

Frequency

Crystal and Reference frequency

-

26

-

MHz

Tolerance

Crystal and Reference frequency

tolerance

-10

-

+10

ppm

XI Pin

Input voltage range for reference

clock input

-0.3

3.6

V