MMPF0100 datasheet(48/136 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

PF0100

Functional Block Requirements and Behaviors

Power Generation

SW1A/B/C Specifications

LSW1C

SW1C Inductor

–

1.0

μH

DCR = 60 m

ISAT = 2.4 A

1.0

μH

DCR = 60 m

ISAT = 2.4 A

Notes

32.

Use X5R or X7R capacitors.

Table 53. SW1A/B/C Electrical Characteristics

All parameters are specified at TA = -40 to 85 °C, VIN = VINSW1x = 3.6 V, VSW1x = 1.2 V, ISW1x = 100 mA,

SW1x_PWRSTG[2:0] = [111], typical external component values, fSW1x = 2.0 MHz, unless otherwise noted. Typical values are

characterized at VIN = VINSW1x = 3.6 V, VSW1x = 1.2 V, ISW1x = 100 mA, SW1x_PWRSTG[2:0] = [111], and 25 °C, unless

otherwise noted.

Parameter

Symbol

Min

Typ

Max

Unit

SW1A/B/C (SINGLE PHASE)

Operating Input Voltage

VINSW1A

VINSW1B

VINSW1C

2.8

–

4.5

Nominal Output Voltage

VSW1ABC

–

Table 40

–V

Output Voltage Accuracy

• PWM, APS, 2.8 V < VIN < 4.5 V, 0 < ISW1ABC < 4.5 A

0.3 V

≤ VSW1ABC ≤ 1.450 V

1.475 V

≤ VSW1ABC ≤ 1.875 V

• PFM, steady state, 2.8 V < VIN < 4.5 V, 0 < ISW1ABC < 150 mA

0.3 V < VSW1ABC < 0.85 V

0.875 V < VSW1ABC < 1.875 V

VSW1ABCACC

-25

-3.0%

-65

-6.0%

–

3.0%

6.0%

Rated Output Load Current,

2.8 V < VIN < 4.5 V, 0.3 V < VSW1ABC < 1.875 V

ISW1ABC

–

4500

Current Limiter Peak Current Detection

• Current through Inductor

SW1ABILIM = 0

SW1ABILIM = 1

ISW1ABCLIM

7.1

5.3

10.5

7.9

13.7

10.3

Start-up Overshoot

ISW1ABC = 0 mA

DVS clk = 25 mV/4

μs, VIN = VINSW1x = 4.5 V, VSW1ABC = 1.875 V

VSW1ABCOSH

––

Turn-on Time

Enable to 90% of end value

ISW1x = 0 mA

DVS clk = 25 mV/4.0

μs, VIN = VINSW1x = 4.5 V,

VSW1ABC = 1.875 V

tONSW1ABC

–

500

µs

Switching Frequency

SW1xFREQ[1:0] = 00

SW1xFREQ[1:0] = 01

SW1xFREQ[1:0] = 10

fSW1ABC

–

1.0

2.0

4.0

–

MHz

Table 52. SW1A/B/C External Component Recommendations

Mode

Components

Description

A/B/C Single

Phase

A/B Single - C

Independent Mode

A/B Dual - C

Independent Mode

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