MMPF0100Z datasheet(70/128 Pages) NXP

70 / 128 page

NXP Semiconductors

PF0100Z

FUNCTIONAL BLOCK REQUIREMENTS AND BEHAVIORS

6.4.4.6.2

SW4 external components

6.4.4.6.3

SW4 specifications

Table 84. Register SW4CONF - ADDR 0x4E

Name

Bit #

R/W

Default

Description

SW4ILIM

R/W

0x00

SW4 current limit level selection

0 = High level Current limit

1 = Low level Current limit

UNUSED

R/W

0x00

unused

SW4FREQ

3:2

R/W

0x00

SW4 switching frequency selector. See Table 37.

SW4PHASE

5:4

R/W

0x00

SW4 phase clock selection. See Table 35.

SW4DVSSPEED

7:6

R/W

0x00

SW4 DVS speed selection. See Table 34.

Table 85. SW4 external component requirements

Components

Description

Values

CINSW4(55)

SW4 input capacitor

4.7

F

CIN4HF(55)

SW4 decoupling input capacitor

0.1

F

COSW4(55)

SW4 output capacitor

2 x 22

F

LSW4

SW4 inductor

1.0

H

DCR = 60 m



ISAT = 3.0 A

Notes

55.

Use X5R or X7R capacitors.

Table 86. SW4 electrical characteristics

All parameters are specified at PF0100Z TA = -40 °C to 85 °C, PF0100AZ TA = -40 °C to 105 °C, VIN =VINSW4 =3.6 V, VSW4 =1.8 V,

ISW4 = 100 mA, SW4_PWRSTG[2:0] = [101], typical external component values, fSW4 = 2.0 MHz, single/dual phase and independent

mode, unless otherwise noted. Typical values are characterized at VIN = VINSW4 = 3.6 V, VSW4 = 1.8 V, ISW4 = 100 mA,

SW4_PWRSTG[2:0] = [101], and 25 °C, unless otherwise noted.

Symbol

Parameter

Min.

Typ.

Max.

Unit

Notes

Switch Mode Supply SW4

VINSW4

Operating input voltage

2.8

–

4.5

(56)

VSW4

Nominal output voltage

Normal operation

VTT mode

–

Table 78

VSW3AFB/2

–

VSW4ACC

Output voltage accuracy

• PWM, APS, 2.8 V < VIN < 4.5 V, 0 < ISW4 < 1.0 A

0.625 V < VSW4 < 0.85 V

0.875 V < VSW4 < 1.975 V

2.0 V < VSW4 < 3.3 V

• PFM, steady state, 2.8 V < VIN < 4.5 V, 0 < ISW4 < 50 mA

0.625 V < VSW4 < 0.675 V

0.7 V < VSW4 < 0.85 V

0.875 V < VSW4 < 1.975 V

2.0 V < VSW4 < 3.3 V

• VTT mode , 2.8 V < VIN < 4.5 V, 0 < ISW4 < 1.0 A

-25

-3.0%

-6.0%

-65

-45

-3.0%

-40

–

3.0%

6.0%

3.0%

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