MMPF0100 datasheet(75/136 Pages) NXP

75 / 136 page

NXP Semiconductors

PF0100

FUNCTIONAL BLOCK REQUIREMENTS AND BEHAVIORS

6.4.4.5.3

SW4 specifications

Table 87. SW4 electrical characteristics

All

parameters

are

specified

TMIN to TMAX (See Table 3), 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

(59)

VSW4

Nominal output voltage

• Normal operation

• VTT mode

–

Table 79

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

ISW4

Rated output load current

• 2.8 V < VIN < 4.5 V, 0.625 V < VSW4 < 3.3 V

–

1000

(60)

ISW4LIM

Current limiter peak current detection

Current through inductor

• SW4ILIM = 0

• SW4ILIM = 1

1.4

1.0

2.0

1.5

3.0

2.4

VSW4OSH

Start-up overshoot

• ISW4 = 0.0 mA

• DVS clk = 25 mV/4

μs, VIN = VINSW4 = 4.5 V

––

tONSW4

Turn-on time

• Enable to 90% of end value

• ISW4 = 0.0 mA

• DVS clk = 25 mV/4

μs, VIN = VINSW4 = 4.5 V

–

500

µs

fSW4

Switching frequency

• SW4FREQ[1:0] = 00

• SW4FREQ[1:0] = 01

• SW4FREQ[1:0] = 10

–

1.0

2.0

4.0

–

MHz

ηSW4

Efficiency

•fSW4 = 2.0 MHz, LSW4 = 1.0 μH

• PFM, 1.8 V, 1.0 mA

• PFM, 1.8 V, 50 mA

• APS, PWM 1.8 V, 200 mA

• APS, PWM 1.8 V, 500 mA

• APS, PWM 1.8 V, 1000 mA

• PWM 0.75 V, 200 mA

• PWM 0.75 V, 500 mA

• PWM 0.75 V, 1000 mA

–

ΔVSW4

Output ripple

–

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