NCP3163BPWG 查看數據表（PDF） - ON Semiconductor

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NCP3163BPWG

3.4 A, Step-Up/Down/Inverting 50-300 kHz Switching Regulator

ON Semiconductor 

NCP3163, NCV3163

8

0.25 V

-

Current

Limit

9

+

RSC

Vin

Cin

7

VCC

10

RT CT

6 Oscillator

5

Thermal

4

R

Q

S

Latch

VCC

Q1

11

Q2

12

60

13

R1

R2

3

14

45 k

2

+ Feedback

+

-

Comparator

15

D

+ 1.25 V 15 k

2.0 mA

1

+

16

-

LVI

1.125 V

VCC 7.0 V

CB RB

L

(Bottom View)

CO

Vout

Figure 23. Typical Buck Application Schematic

Value of Components

Name

Value

L

47 mH

D

2 A, 40 V Schottky Rectifier

Cin

47 mF, 35 V

Cout

100 mF, 10 V

Ct

270 pF ±10%

Rt

15 kW

Name

R1

R2

Rsc

Cb

Rb

Value

15 kW

24.9 kW

80 mW, 1 W

4.7 nF

200 W

Test Results for Vout = 3.3 V

Test

Condition

Line Regulation

Load Regulation

Output Ripple

Efficiency

Short Circuit Current

Vin = 8.0 V to 24 V, Iout = 2.5 A

Vin = 12 V, Iout = 0 to 2.5 A

Vin = 12 V, Iout = 0 to 2.5 A

Vin = 12 V, Iout = 2.5 A

Vin = 12 V, RL = 0.1 W

Results

13 mV

25 mV

100 mVpp

70.3%

3.1 A

Test Results for Vout = 5.05 V

Test

Condition

Line Regulation

Load Regulation

Output Ripple

Efficiency

Short Circuit Current

Vin = 10.2 V to 24 V, Iout = 2.5 A

Vin = 12 V, Iout = 0 to 2.5 A

Vin = 12 V, Iout = 0 to 2.5 A

Vin = 12 V, Iout = 2.5 A

Vin = 12 V, RL = 0.1 W

Results

54 mV

28 mV

150 mVpp

75.5%

3.1 A

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