MC33063A datasheet(2/15 Pages) TI

Numer części	MC33063A

Szczegółowy opis	1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS

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MC33063A, MC34063A

1.5A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS

SLLS636D – DECEMBER 2004 – REVISED MARCH 2005

2

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

functional block diagram

_

+

Q

S

1.25-V

Reference

Regulator

R

CT

Ipk

Oscillator

Q2

Q1

Switch

Collector

4

Switch

Emitter

Timing

Capacitor

GND

3

2

1

8

7

6

5

Comparator

Inverting

Input

VCC

Ipk

Sense

Drive

Collector

100

Ω

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage, VCC

40 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Comparator Inverting Input voltage range, VIR

−0.3 V to 40 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch Collector voltage, VC(switch)

40V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch Emitter voltage (VPIN1 = 40 V), VE(switch)

40V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch Collector to Switch Emitter voltage, VCE(switch)

40V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Driver Collector voltage, VC(driver)

40V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Driver Collector current, IC(driver)

100 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch current, ISW

1.5 A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

θJA (see Notes 1 and 2): D package

97

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

DRJ package

TBD

°C/W

. . . . . . . . . . . . . . . . . . . . . . .

P package

85

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating virtual junction temperature, TJ

150

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable

ambient temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.

2. The package thermal impedance is calculated in accordance with JESD 51-7.

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