DA9062 datasheet(18/93 Pages) DIALOG

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DA9062

Entry level PMIC for applications requiring up to 8.5 A

Datasheet

Revision 3.2

18-Feb-2015

18 of 93

4.5.2

Buck3

Unless otherwise noted, the following is valid for TA = -40 to +85 ºC.

Table 12: Buck3 electrical characteristics

Parameter

Symbol

Test conditions

Min

Typ

Max

Unit

Input voltage

VDD

IOUT ≤ 1.5 A

2.8

5.5

IOUT > 1.5 A

3.3

5.5

Output capacitor

COUT

IOUT ≤ 1.5 A

including voltage and

temperature coefficient

-50%

2 * 22

+30%

µF

IOUT > 1.5 A

including voltage and

temperature coefficient

-50%

2 * 47

+30%

Output capacitor ESR

RCOUT_ESR

COUT = 2 * 22 µF

f > 100 kHz

including wiring parasitics



COUT = 2 * 47 µF

f > 100 kHz

including wiring parasitics

7.5

Inductor value

LBUCK

Including current and

temperature dependence

0.6

1.0

1.3

µH

Inductor resistance

RL_DCR

120



Output voltage

VBUCK

Programmable in 20 mV steps

0.8

3.34

Output voltage accuracy

VBUCK_ACC

Including static line and load

regulation and voltage ripple

Note 1

-3%

+3%

Transient load regulation

VTR_LOAD

VDD = 3.6 V, VBUCK = 1.8 V

IOUT = 200 to 1000 mA

dI/dt = 3 A/µs

L = 1 µH

VDD = 3.6 V, VBUCK = 1.8 V

IOUT = 200 to 2000 mA

dI/dt = 3 A/µs

L = 1 µH

VDD = 5.0 V, VBUCK = 3.34 V

IOUT = 200 to 2000 mA

dI/dt = 3 A/µs

L = 1 µH

Transient line regulation

VTR_LINE

VDD = 3.0 to 3.6 V

IOUT = 500 mA

tr = tf = 10 µs

0.2

Output current

IOUT

VDD - VBUCK ≥ 1.25 V

L > 0.9 µH

2000

VDD - VBUCK ≥ 1.00 V

L > 0.9 µH

1250

VDD - VBUCK ≥ 0.75 V

L > 0.6 µH

900

Current limit

ILIM

Controlled in BUCK3_ILIM

in 100 mA steps

1500

3000

Current limit accuracy

ILIM_ACC

-20%

20%

DA9062 Datasheet(PDF) 18 Page - Dialog Semiconductor

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