NCP3063B Просмотр технического описания (PDF) - ON Semiconductor

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NCP3063B

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

ON Semiconductor 

NCP3063, NCP3063B, NCV3063

Switch Collector

Switch Emitter

Timing Capacitor

GND

1

8

2

7

3

6

4

5

(Top View)

N.C.

Ipk Sense

VCC

Comparator

Inverting

Input

Figure 2. Pin Connections

Switch Collector

ÇÇ Switch Emitter

ÇÇ Timing Capacitor

ÇÇÇÇ GND

EP Flag

N.C.

ÇIpk Sense

ÇÇVCC

ÇComparator

Inverting

(Top View)

Input

NOTE: EP Flag must be tied to GND Pin 4

on PCB

Figure 3. Pin Connections

8

N.C.

7

Ipk Sense

6

+VCC

5

Comparator Inverting Input

NCP3063

TSD

SET dominant

R

Q

S

COMPARATOR

−

+

S

Q

R

0.2 V

SET dominant

OSCILLATOR

CT

COMPARATOR

+

−

1.25 V

REFERENCE

REGULATOR

Figure 4. Block Diagram

1

Switch Collector

2

Switch Emitter

3

Timing Capacitor

4

GND

http://onsemi.com

2

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