ADP3510ARU Просмотр технического описания (PDF) - Analog Devices

Номер в каталоге

Компоненты Описание

Список матч

ADP3510ARU

CDMA Power Management System

Analog Devices 

ADP3510

4.25

4.24

4.23

VIN = 5.0V

ILOAD = 10mA

4.22

4.21

4.20

4.19

4.18

4.17

4.16

4.15

–40 –20

0 20 40 60 80

TEMPERATURE – ؇C

100 120

TPC 19. Charger VOUT vs. Temperature,

VIN = 5.0 V, ILOAD = 10mA

4.22

VIN = 5V

RSENSE = 250m⍀

4.21

4.20

4.19

4.18

0

200

400

600

800 1000

ILOAD – mA

TPC 20. Charger VOUT vs. ILOAD

(VIN = 5.0 V)

4.210

RSENSE = 250m⍀

4.205

ILOAD = 500mA

4.200

4.195

ILOAD = 10mA

4.190

5

6

7

8

9

10

INPUT VOLTAGE – V

TPC 21. Charger VOUT vs. VIN

THEORY OF OPERATION

The ADP3510 is a total solution power management chip for use

with CDMA baseband chipsets and is optimized for the CBP3.0/

4.0 type chipsets. Figure 1 shows a block diagram of the ADP3510.

The ADP3510 contains several blocks:

∑ Six Low Dropout Regulators (Input-Output, Core, Analog,

Crystal Oscillator, Memory, Realtime Clock)

∑ Reset Generator

∑ Buffered Precision Reference

∑ Lithium Ion Charge Controller and Processor Interface

∑ Power-On/-Off Logic

∑ Undervoltage Lockout

∑ Deep Discharge Lockout

These functions have traditionally been done either as a discrete

implementation or as a custom ASIC design. The ADP3510

combines the benefits of both worlds by providing an integrated

standard product where every block is optimized to operate in a

CDMA environment while maintaining a cost-competitive solution.

Figure 3 shows the external circuitry associated with the ADP3510.

Only a minimal number of support components are required.

Input Voltage

The input voltage range of the ADP3510 is 3.2 V to 7.5 V and is

optimized for a single Li-Ion cell or three NiMH cells. The thermal

impedance of the ADP3510 is 68∞C/W for four layer boards. The

end of charge voltage for high capacity NiMH cells can be as high

as 5.5 V. Power dissipation should be calculated at maximum ambi-

ent temperatures and battery voltage in order not to exceed the 125∞C

maximum allowable junction temperature. Figure 4 shows the maxi-

mum power dissipation as a function of ambient temperature.

PWRON

PWRONKEY

KEYPADROW

ALARM

VRTC

C1

0.1␮F

ADC

GPIO

CHARGER IN

GPIO

R1

0.25⍀

C2

10nF

C3

1.0nF

Q1

SI3441DY

D1

10BQ015

Li؉

BATTERY

ADP3510

1 PWRONIN TCXOEN 28

2 PWRONKEY AGND 27

3 ROWX

REFOUT 26

4 ALARM

VTCXO 25

5 PDCAP

VAN 24

6 VRTC

VBAT 23

7 BATSNS

VCORE 22

8 MVBAT

VMEM 21

9 CHRDET

VBAT2 20

10 CHRIN

VIO 19

11 GATEIN

RESET 18

12 GATEDR RESCAP 17

13 DGND

CHGEN 16

14 ISENSE

EOC 15

TCXOEN

R2 10⍀

C4

10␮F

C9

2.2␮F

C7

2.2␮F

C10

0.22␮F

C6

2.2␮F

C5

0.1␮F

C8

2.2␮F

C11

0.1␮F

REF

VTCXO

VAN

VCORE

VMEM

VIO

RESET

GPIO

GPIO

Figure 3. Typical Application Circuit

–10–

REV. 0

Share Link: