Data Sheet

ADP5310

Rev. A | Page 25 of 28

TYPICAL APPLICATION CIRCUITS

Figure 58 and Figure 59 show how the ADP5310 can be applied in energy metering and medical applications controlled by a

microcontroller or a processor.

SW1

PGND1

FB1

R1

R2

10µF

4.7µH

SW2

PGND2

FB2

10µF

4.7µH

VOUT3

ADP5310

EN1

FROM MCU

PWRGD

TO MCU

FROM MCU

PVIN1

PVIN2

NC

EN3

SYNC/

MODE

CHANNEL 1

BUCK

REGULATOR

(800mA)

PA

MCU

(ALWAYS ON)

ADF70xx

(Rx/Tx)

CHANNEL 3

LOAD

SWITCH

CHANNEL 2

ULTRALOW

POWER

BUCK

REGULATOR

(50mA/300mA)

10µF

MAX = 15V

MIN = 2.7V

AGND

VREG

1µF

1µF

2.2V~2.8V

AT 15mA

2.2V~2.8V

AT 2µA

3.6V~4.6V

AT 400mA

INPUT/

OUTPUT

(BY DAC OR

GPIO SWITCH)

Figure 58. Typical Application of a Smart Meter

SW1

PGND1

FB1

R1

R2

10µF

1.0µH

SW2

PGND2

FB2

10µF

6.8µH

VOUT3

ADP5310

EN1

FROM DSP

PWRGD

TO DSP

FROM DSP

PVIN1

PVIN2

NC

EN3

SYNC/

MODE

CHANNEL 1

BUCK

REGULATOR

(800mA)

ADP160

ADI DSP

HIBERNATE

ALWAYS ON

VDD_INT

VDD_DMC

LPDDR

CMOS

SENSOR

PERIPHERAL

(ALWAYS ON)

PERIPHERAL

(OFF HIBERNATE)

VDD_EXT

VDD_OTP

VDD_HADC

VDD_USB

VDD_RTC

CHANNEL 3

LOAD

SWITCH

CHANNEL 2

ULTRALOW

POWER

BUCK

REGULATOR

(50mA/300mA)

22µF

MAX = 15V

MIN = 2.7V

AGND

VREG

1µF

1µF

3.3V

1.8V

3.3V

3.3V

3.3V

1.1V

(BY DAC OR

SWITCH)

MODE:

HIGH = FORCED PWM

LOW = FORCED HYSTERESIS

Figure 59. Battery Powered Typical Application with a DSP from Analog Devices, Inc.