STW4811N datasheet(76/85 Pages) STMICROELECTRONICS

76 / 85 page

Application information

STw4811M/STw4811N

76/85

CD00131784

Application information

6.1

Components list

Table 53.

Components list

Name

Typical

value

Comments

Function

22µF

In the complete system application, the

sum of the capacitors connected on

each STw4811 ball must never be less

than 30% of the value indicated in the

typical value column of this table. This

includes all capacitor parameters:

– production dispersion

– DC bias voltage applied

– temperature range of the complete

system application

–aging

VIO_VMEM output filter

VCORE output filter

10µF

VBAT_VIOVMEM decoupling

VBAT_ANA decoupling

VBAT_VCORE decoupling

1µF

VPLL output filter

VANA output filter

VREF output filter

C10

VUSB output filter

C13

VAUX output filter

470nF

Flying capacitor for charge pump

C11

4.7µF

VBUS output filter (tank charge

pump capacitor)

C12

2.2µF

VSD_MMC output filter

C13, C14,

C15, C16,

C17

1 µF

Vbattery input voltage

decoupling capacitors

4.7µH

See

Table 54 for recommended coils

Coil VIOVMEM DC/DC

Coil VCORE DC/DC

Table 54.

Recommended coils

Supplier

Part number

DCR (

Ω)Irms(1) (A)

Irms: 30% decrease of initial value

L x l x h (mm * mm * mm)

TDK

VLF3010AT-4R7MR70

0.28

0.7

2.8 * 2.6 * 1.0

VLF3012AT-4R7MR74

0.16

0.74

2.8 * 2.6 * 1.2

VLF4012AT-4R7M1R1

0.14

1.1

3.7 * 3.5 * 1.2

Coilcraft

DO1605T-472MX

0.15

1.1

5.5 * 4.2 * 1.8

DO3314-472ML

0.32

1.1

3.3 * 3.3 * 1.4

ME3320-472MX

0.19

1.1

3.2 * 2.5 * 2.0

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