DA6021 datasheet(90/225 Pages) RENESAS

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DA6021

HIGHLY INTEGRATED POWER MANAGEMENT IC FOR

INTEL® ATOM™ Z3000 PROCESSOR

Company Confidential

Data Sheet

Version 3.A - Final

31-Jan-14

90 of 224

www.dialog-semiconductor.com

11.6.4.1

Power States

Active state:

DA6021 V1P05S voltage rail can handle up to 474mA max current. Its usual average current workload is at 1mA

to 50mA, but thermally able to handle 474mA in peaks. Optimized efficiency is achieved from 1mA to 50mA.

Automatically switching from PWM to PFM mode achieves the best power efficiency.

S0ix State:

When the SoC enters the S0ix state, SLP_S0ix is held low. DA6021 turns the V1P0S buck regulator off except

V1P05S.V1P05S_EN bit is set. DA6021 exits S0iX state while asserting SLP_S0iX_B to high and enabling

V1P05S buck regulator and ramps the voltage to 1.05V±5% within 60µs.

11.6.4.2

Electrical Characteristics

PARAMETER

TEST

CONDITIONS

MIN

TYP

MAX

UNIT

Val

V1P05S_VIN

Input Voltage

2.7

4.5

Cin

at V1P05S_IN

4.7

µF

Cout

2 x 22

μF

ESR of output capacitor

6 @ 22µF

mΩ

ESL of output capacitor

1.6 @ 3MHz

L_BUCK

inductor value

-20%

0.47

+20%

μH

L_DCR

inductor resistance

mΩ

V1P05S

Output Voltage

IOUT= Imax

1.05

2%

F_BUCK

Frequency of operation

MHz

Transient load current profile

0-740mA

200

Transient droop

0-740mA

Transient overshoot

740-0mA

Ton

Turn on time

Rpd

Discharge impedance

Vout .. 0V

Ω

IQ_ON

Quiescent Current in

On Mode

µA

Normal Mode

– Synchronous rectification (PWM)

Maximum Output Current (Imax)

Cycle by cycle

475

ILIMIT

Current limitation

900

Efficiency at VSYS = 3.7V & Tamb=60°C

with proposed external components and

PCB layout

See Figure 35

D,E,

Sleep Mode

– Pulse skipping (PSK)

Efficiency at VSYS = 3.7V & Tamb=60°C

with proposed external components and

PCB layout

See Figure 35

D,E,

Table 45: Electrical Parameter for BUCK_V1P05S

10 Including DC accuracy, ripple and load regulation

11 Including DC accuracy, ripple and load regulation

12 RDSON measurement on ATE

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