AS3658F-BCTP datasheet(47/158 Pages) AMSCO

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AS3658

Data Sheet Confidential - Detail ed Descri ption-Power Management Functions

Figure 16. External Linear Charger Application Diagram (VOFF_B connected to GND)

Table 38. Charger External Components

Symbol

Component

Value

Note

MCHARGER,

MBATSW,

MREVPOL

P-channel MOSFET

Si1403, FDC642P or FDC5614P similar

MCHRGPU

P-channel MOSFET

BSS84 or FDG312P or similar

RCHRGPU1

Pull-up resistor1

Ω ± 5%

RCHRGPU2

Pull-up resistor2

100

Ω ± 5%

for MCHRGPU =BSS84

Ω ± 5%

for MCHRGPU=FDG312P

LCHARGER

Inductor for charging

10µH

5V or 6V Vcharger input

22µH

12V Vcharger input

DCHARGER

Diode

MBRS130 or PMEG2010

DCHRGPROT

Zener Diode

5.6V Zener Diode

RCHSHUNT

Current sense resistor

charger

70m

Ω ± 5%, 125mW

e.g. Vishay Dale WSL0805

series

RSENSE

Current sense resistor

50m

Ω ± 1%, 125mW for IVBAT,DC<1.5A

e.g. Vishay Dale WSL0805

series

RFILTER1,2

Filter resistor

4.7k

Ω ± 1%

Can be omitted if fuel gauge

and charger functionality is

not used

CFILTER

Filter capacitor

1µF ± 20%, X5R or X7R dielectric

CCHARGER

Bypass capacitor on

charger pin

1µF ± 20%, X5R or X7R dielectric +

22µF ± 20%, Tantal dielectric

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