MC34063AD datasheet(8/15 Pages) ONSEMI | 1.5 A, Step-Up/Down/ Inverting Switching Regulators

Part #	MC34063AD

Description	1.5 A, Step-Up/Down/ Inverting Switching Regulators

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Manufacturer	ONSEMI [ON Semiconductor]

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MC34063A, MC33063A, SC34063A, SC33063A, NCV33063A

http://onsemi.com

8

1.25 V

Ref

Reg

Vout

-12 V/100 mA

Vout

1.0

mH

+

100

Optional Filter

8

7

Rsc

0.24

6

Vin

4.5 V to 6.0 V

100

+

5

R2

8.2 k

SQ

R

Q2

Q1

Ipk

OSC

CT

Comp.

R1

953

1

2

3

4

+

1500

pF

+

-

1N5819

1000

mf

+

88

mH

VCC

CO

L

Test

Conditions

Results

Line Regulation

Vin = 4.5 V to 6.0 V, IO = 100 mA

3.0 mV = ±0.012%

Load Regulation

Vin = 5.0 V, IO = 10 mA to 100 mA

0.022 V = ±0.09%

Output Ripple

Vin = 5.0 V, IO = 100 mA

500 mVpp

Short Circuit Current

Vin = 5.0 V, RL = 0.1 W

910 mA

Efficiency

Vin = 5.0 V, IO = 100 mA

62.2%

Output Ripple With Optional Filter

Vin = 5.0 V, IO = 100 mA

70 mVpp

Figure 13. Voltage Inverting Converter

13a. External NPN Switch

13b. External PNP Saturated Switch

8

7

6

Vin

1

2

Vout

8

7

6

Vin

1

2

Vout

Figure 14. External Current Boost Connections for IC Peak Greater than 1.5 A

3

4

+

3

4

+

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MC34063AD Datasheet(PDF) 8 Page - ON Semiconductor

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