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

μF

CIN4HF(55)

SW4 decoupling input capacitor

0.1

μF

COSW4(55)

SW4 output capacitor

2 x 22

μF

LSW4

SW4 inductor

1.0

μH

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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