DA9021 datasheet(34/142 Pages) DIALOG

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DA9021/22

System PMIC with high efficiency USB power manager

Datasheet

Revision 2.5

17-Feb-2017

CFR0011-120-00 Rev 5

34 of 142

8.8.3

BUCKPERI

Table 22: BUCKPERI (DA9022 only)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Input voltage

VDD

VDDOUT

-0.3 V

2.8 V min

VDD_OUT +

0.3 V

5 V max

Output capacitor

COUT

-30 %

+30 %

µF

Output capacitor ESR

f > 100 kHz

all caps + track

impedance

mΩ

Inductor value

LBUCK

-30 %

2.2 or

4.7

+30 %

µH

Inductor resistance

RESR

100

150

mΩ

Output voltage

VBPERI

IOUT = IMAX

1.8

Note 1

3.6

Output voltage

accuracy

incl. static line / load

regulation

-3

Note 2

Output voltage ripple

IOUT = IMAX

Load regulation

transient

VTRLOAD

VDD = 3.6 V, VBPERI <

3.0 V

IOUT = 0 mA to 500 mA

step,

dI/dt = 50 mA/µs

VTRLOAD

VDD = 3.6 V, VBPERI=

3.3 V

IOUT = 0 mA to 500 mA

step,

dI/dt = 50 mA/µs

Line regulation

transient

VTRLINE

VDD = 3.0 V to 3.6 V

IOUT = 300 mA

tr = tf = 10 µs

Output current

IMAX

ILIM

During DVC transitions

Between DVC transitions

VBMEM < 2.1 V

650

750

Note 3

Current limit

(programmable)

BUCKPERI_ILIM=00

-20 %

700

20 %

BUCKPERI_ILIM=01

-20 %

800

20 %

BUCKPERI_ILIM=10

-20 %

1000

20 %

BUCKPERI_ILIM=11

-20 %

1200

20 %

Quiescent current in

OFF mode

IQOFF

µA

Quiescent current in

synchronous

rectification mode

IQON

Switching frequency

MHz

Switching duty cycle

100

Turn on time

TON

2.2

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