MMPF0100 datasheet(70/136 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

PF0100

Functional Block Requirements and Behaviors

Power Generation

SWITCH MODE SUPPLY SW3A/B (CONTINUED)

Current Limiter Peak Current Detection

• Single phase (Current through inductor)

SW3xILIM = 0

SW3xILIM = 1

• Independent mode or Dual phase (Current through inductor per

phase)

SW3xILIM = 0

SW3xILIM = 1

ISW3xLIM

3.5

2.7

1.8

1.3

5.0

3.8

2.5

1.9

6.5

4.9

3.3

2.5

Start-up Overshoot

ISW3x = 0.0 mA

DVS clk = 25 mV/4

μs, VIN = VINSW3x = 4.5 V

VSW3xOSH

––

Turn-on Time

Enable to 90% of end value

ISW3x = 0 mA

DVS clk = 25 mV/4

μs, VIN = VINSW3x = 4.5 V

tONSW3x

–

500

µs

Switching Frequency

SW3xFREQ[1:0] = 00

SW3xFREQ[1:0] = 01

SW3xFREQ[1:0] = 10

fSW3x

–

1.0

2.0

4.0

–

MHz

Efficiency (Single Phase)

•fSW3 = 2.0 MHz, LSW3x 1.0 μH

PFM, 1.5 V, 1.0 mA

PFM, 1.5 V, 50 mA

APS, PWM 1.5 V, 500 mA

APS, PWM 1.5 V, 750 mA

APS, PWM 1.5 V, 1250 mA

APS, PWM 1.5 V, 2500 mA

ηSW3AB

–

Output Ripple

ΔVSW3x

–10–

Line Regulation (APS, PWM)

VSW3xLIR

––

DC Load Regulation (APS, PWM)

VSW3xLOR

––

Transient Load Regulation

• Transient Load = 0.0 mA to ISW3x/2, di/dt = 100 mA/μs

Overshoot

Undershoot

VSW3xLOTR

–

Quiescent Current

PFM Mode (Single/Dual Phase)

APS Mode (Single/Dual Phase)

PFM Mode (Independent mode)

APS Mode (SW3A Independent mode)

APS Mode (SW3B Independent mode)

ISW3xQ

–

300

250

150

–

µA

SW3A P-MOSFET RDSON

at VIN = VINSW3A = 3.3 V

RONSW3AP

–

215

245

SW3A N-MOSFET RDSON

at VIN = VINSW3A = 3.3 V

RONSW3AN

–

258

326

SW3A P-MOSFET Leakage Current

VIN = VINSW3A = 4.5 V

ISW3APQ

––

7.5

µA

Table 77. SW3A/B Electrical Characteristics

All parameters are specified at TA = -40 to 85 °C, VIN = VINSW3x = 3.6 V, VSW3x = 1.5 V, ISW3x = 100 mA,

SW3x_PWRSTG[2:0] = [111], typical external component values, fSW3x = 2.0 MHz, single/dual phase and independent mode

unless, otherwise noted. Typical values are characterized at VIN = VINSW3x = 3.6 V, VSW3x = 1.5 V, ISW3x = 100 mA,

SW3x_PWRSTG[2:0] = [111], and 25 °C, unless otherwise noted.

arameter

Symbol

Min

Typ

Max

Unit

MMPF0100 数据表(PDF) 70 Page - Freescale Semiconductor, Inc

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