STW4810 datasheet(70/79 Pages) STMICROELECTRONICS

70 / 79 page

STw4810

Application information

69/78

Application information

6.1

Components list

Table 52.

Components list

Name

Typical

value

Comments

Function

22µF

In the complete system application,

the sum of the capacitors connected

on each STw4810 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 53 for recommended coils

Coil VIOVMEM DC/DC

Coil VCORE DC/DC

Table 53.

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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