MC33466 데이터 시트보기 (PDF) - Motorola => Freescale

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MC33466

FIXED FREQUENCY PWM MICROPOWER DC–to–DC CONVERTER

Motorola => Freescale 

MC33466

ELECTRICAL CHARACTERISTICS (VCC = 2.0 V, IO = 10 mA and TA = 25°C, unless otherwise noted.)

Characteristic

Symbol

Min

Typ

Max

Unit

OSCILLATOR

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Frequency

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Oscillator Minimum Startup Voltage (IO = 0 mA)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Oscillator Minimum Supply Voltage (IO = 0 mA)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ LX OUTPUT (JT1 SUFFIX)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ON State Sink Current (VLx = 0.4 V)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 30KT1 Suffix

fosc

Vstart

VCC

ILx

40

50

60

kHz

–

0.8

0.9

V

0.7

–

–

V

60

–

mA

–

33KT1 Suffix

63

–

–

50KT1 Suffix

80

–

–

VLx Voltage Limit (Note 1)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ OFF State Leakage Current (VLx = 6.0 V)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ EXT OUTPUT (LT1 SUFFIX)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ON State Source Current (VEXT = VO – 0.4 V)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 30LT1 Suffix

VLxLim

0.65

0.8

ILKG

–

–

Isource

1.5

–

1.0

V

0.5

µA

mA

–

33LT1 Suffix

1.575

–

–

50LT1 Suffix

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ OFF State Sink Current (VEXT = 0.4 V)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 30LT1 Suffix

2.0

–

Isink

1.5

–

–

mA

–

33LT1 Suffix

1.575

–

–

ÁÁÁÁÁÁÁÁTMOO53uaT00ÁÁÁÁtxALKpiTmLuT1t1uDÁÁÁÁVmSoEourVlDtf3afÁÁÁÁIiuC0gxtLeEyTRÁÁÁÁ1aStiuoÁÁÁÁffEixacÁÁÁÁh CÁÁÁÁycleÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁVÁÁÁÁDO ÁÁÁÁÁÁÁÁÁÁ2ÁÁ2.79.002ÁÁ5ÁÁÁÁÁÁÁÁÁÁ38–.00ÁÁÁÁÁÁÁÁ3ÁÁÁÁ.90–075ÁÁÁÁÁÁÁÁÁÁ%VÁÁÁÁÁÁ

33KT1 or 33LT1 Suffix

3.218

3.3

3.383

50KT1 or 50LT1 Suffix

4.875

5.0

5.125

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Soft–Start Time (Note 2)

Quiescent Bias Current (Vin = 2.0 V, IO = 0 mA)

30JT1 Suffix

33JT1 Suffix

Tss

0.5

2.0

–

ms

IQ

µA

–

15

25

–

17

27

50JT1 Suffix

–

30

45

Quiescent Bias Current (Vin = VO + 0.5 V, IO = 0 mA)

30JT1 Suffix

–

1.2

5.0

33JT1 Suffix

50JT1 Suffix

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Quiescent Bias Current (Vin = 2.0 V, IO = 0 mA)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 30LT1 Suffix

–

1.2

5.0

–

2.0

5.0

IQ

µA

–

30

50

33LT1 Suffix

–

34.5

56

50LT1 Suffix

–

60

90

Quiescent Bias Current (Vin = VO + 0.5 V, IO = 0 mA)

30LT1 Suffix

–

1.2

5.0

33LT1 Suffix

–

1.2

5.0

50LT1 Suffix

–

2.0

5.0

NOTES: 1. When the Lx switch is turned on, ILx current carried through the RDS(on) of the Lx switch results in VLx. When VLx reaches VLxLim, the Lx switch is

turned off by the Lx switch protection circuit.

2. The soft–start circuit turn–on sequence is as follows:

a) Vin is applied.

b) The internal IC Vref is held at zero for 200 µs. During this time, the error amplifier output voltage ramps up to the positive voltage rail.

c) The internal reference steps up to 0.7 V after 200 µs delay has timed out.

d) The error amplifier output voltage integrates down to its steady state value. As the error amplifier output integrates down, the output Lx pin of EXT

pin pulse width gradually widens to its steady operating value.

MOTOROLA ANALOG IC DEVICE DATA

3

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