MC33163DWR2 datasheet(11/16 Pages) ONSEMI

Part #	MC33163DWR2

Description	3.4 A, Step-Up/Down/ Inverting Switching Regulators

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Manufacturer	ONSEMI [ON Semiconductor]

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MC34163, MC33163

http://onsemi.com

11

180

mH

Coilcraft

LO451-A

LVI

1

+

-

+

Current

Limit

8

7

6

5

4

3

2

(Bottom View)

+

-

16

9

10

11

12

13

14

15

0.25 V

RSC

0.075

Vin

12 V

CT

680 pF

1.125 V

15 k

1.25 V

+

45 k

Feedback

Comparator

Q1

Q2

60

Cin

330

CO

330

Vout

28 V/600 mA

+

1N5822

R2

47 k

R1

2.2 k

+

-

+

Thermal

Oscillator

R

S

Q

Latch

+

2.0 mA

7.0 V

+

RLVI

1.0 k

L

Low Voltage

Indicator

Output

Test

Condition

Results

Line Regulation

Vin = 9.0 V to 16 V, IO = 0.6 A

30 mV = ± 0.05%

Load Regulation

Vin = 12 V, IO = 0.1 A to 0.6 A

50 mV = ± 0.09%

Output Ripple

Vin = 12 V, IO = 0.6 A

140 mVpp

Efficiency

Vin = 12 V, IO = 0.6 A

88.1%

Figure 23. Step−Up Converter

Figure 24. External Current Boost Connections for Ipk (Switch) Greater Than 3.4 A

Figure 24A. External NPN Switch

Figure 24B. External NPN Saturated Switch

1

+

8

7

6

5

4

3

2

(Bottom View)

16

9

10

11

12

13

14

15

Q3

Q2

Q1

1

+

8

7

6

5

4

3

2

(Bottom View)

16

9

10

11

12

13

14

15

Q3

Q2

Q1

+

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MC33163DWR2 Datasheet(PDF) 11 Page - ON Semiconductor

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