MMPF0200 datasheet(46/114 Pages) NXP

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NXP Semiconductors

PF0200

FUNCTIONAL BLOCK REQUIREMENTS AND BEHAVIORS

SW2 external components

SW2 specifications

Table 55. SW2 external component recommendations

Components

Description

Values

CINSW2(43)

SW2 Input capacitor

4.7

μF

CIN2HF(43)

SW2 Decoupling input capacitor

0.1

μF

COSW2(43)

SW2 Output capacitor

2 x 22

μF

LSW2

SW2 Inductor

1.0

μH

DCR = 50 m

ISAT = 2.65 A

Notes

43.

Use X5R or X7R capacitors.

Table 56. SW2 electrical characteristics

All parameters are specified at Consumer TA = -40 to 85 °C and Extended Industrial TA = -40 to 105 °C, VIN = VINSW2 = 3.6 V, VSW2 =

3.15 V, ISW2 = 100 mA, SW2_PWRSTG[2:0] = [111], typical external component values, fSW2 = 2.0 MHz, unless otherwise noted. Typical

values are characterized at VIN = VINSW2 = 3.6 V, VSW2 = 3.15 V, ISW2 = 100 mA, SW2_PWRSTG[2:0] = [111], and 25 °C, unless

otherwise noted.

Symbol

Parameter

Min.

Typ.

Max.

Unit

Notes

Switch mode supply SW2

VINSW2

Operating Input Voltage

2.8

–

4.5

(44)

VSW2

Nominal Output Voltage

–

Table 48

–V

VSW2ACC

Output Voltage Accuracy

• PWM, APS, 2.8 V < VIN < 4.5 V, 0 < ISW2 < 1.5 A

0.625 V < VSW2 < 0.85 V

0.875 V < VSW2 < 1.975 V

2.0 V < VSW2 < 3.3 V

• PFM, 2.8 V < VIN < 4.5 V, 0 < ISW2 ≤ 50 mA

0.625 V < VSW2 < 0.675 V

0.7 V < VSW2 < 0.85 V

0.875 V < VSW2 < 1.975 V

2.0 V < VSW2 < 3.3 V

-25

-3.0%

-6.0%

-65

-45

-3.0%

–

3.0%

6.0%

3.0%

(45)

ISW2

Rated Output Load Current

2.8 V < VIN < 4.5 V, 0.625 V < VSW2 < 3.3 V

–

1500

(46)

ISW2LIM

Current Limiter Peak Current Detection

• Current through Inductor

SW2ILIM = 0

SW2ILIM = 1

2.1

1.57

3.0

2.25

3.9

2.93

VSW2OSH

Start-up Overshoot

ISW2 = 0.0 mA

DVS clk = 25 mV/4

μs, VIN = VINSW2 = 4.5 V

––

tONSW2

Turn-on Time

Enable to 90% of end value

ISW2 = 0.0 mA

DVS clk = 50 mV/8

μs, VIN = VINSW2 = 4.5 V

–

550

µs

fSW2

Switching Frequency

SW2FREQ[1:0] = 00

SW2FREQ[1:0] = 01

SW2FREQ[1:0] = 10

–

1.0

2.0

4.0

–

MHz

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