AT73C224-E datasheet(5/75 Pages) ATMEL

Part #	AT73C224-E

Description	Power Management and Analog Companions (PMAAC)

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Manufacturer	ATMEL [ATMEL Corporation]

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5

6266A–PMAAC–08-Sep-08

AT73C224

4.

Application examples

Figure 4-1.

Application Schematic 1: Microcontroller with 5V VBUS for 2 USB Host Transceivers

In the Application Schematic 1, the AT7373C224-A is used: the BOOST(VO1) supplies the

“VBUS” of two USB transceivers, the BUCK(VO2) supplies the digital core of the microcontroller,

the LDO3 supplies the I/Os of the microcontroller and LDO4 supplies analog cells, such as aux-

iliary ADC or PLL.

For external components, see Table 4-1.

AT73C224-A

Microcontroller

VDD1

VSENSE1

DL1

DH1

VO1

GND2

GND/AVSS

VO3

GNDANA

VDD4

VO4

VBG

VDD0

Die

Paddle

VCAPN

VCAPP

VINT

VBAT

VO1

VDD3

VBAT

Pushbutton

uP uP uP

nc

uP

ITB/RDY

VDDIO

(AUX ADC, PLL)

USB HOST

transceiver

USB HOST

transceiver

VCORE

SPI / TWI

VO2

VBAT

BUCK2 = 1.8V

D1

D2 D3 D4

POK

R2

C11

C8

C14

C3

C5

C10

C7

C13

C2

L2

Q1

L1

D1

R1

C1

C6

C4

C9

C12

Rechargeable

Backup

Battery

(NBL type)

VBAT

uP uP

X1

BOOST1 = 5V

(VBUS USB)

LDO4 = 2.8V

LDO3 = 2.7V

3V

to

4.2V

VBAT

1

32

C16

Li-Ion

Battery

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