UC3844B, UC3845B, UC2844B, UC2845B

http://onsemi.com

2

Pin numbers in parenthesis are for the D suffix SOIC−14 package.

Output

Undervoltage

Lockout

GND

5.0V

Reference

Undervoltage

Lockout

Latching

PWM

Oscillator

Error

Amplifier

5(9)

3(5)

5(8)

6(10)

7(11)

Power

Ground

Current

Sense Input

1(1)

2(3)

4(7)

8(14)

Output/

Compensation

Voltage

Feedback

Input

7(12)

R

R

Figure 1. Simplified Block Diagram

ORDERING INFORMATION

Device

Operating

Temperature Range

Package

UC384xBD

SOIC−14

55 Units/Rail

UC384xBDR2

SOIC−14

2500 Tape & Reel

UC3844BDR2G

SOIC−14

(Pb−Free)

2500 Tape & Reel

UC384xBD1

SOIC−8

98 Units/Rail

UC3844BD1G

SOIC−8

(Pb−Free)

98 Units/Rail

UC384xBD1R2

A

SOIC−8

2500 Tape & Reel

UC384xBD1R2G

SOIC−8

(Pb−Free)

2500 Tape & Reel

UC384xBN

PDIP−8

50 Units/Rail

UC384xBNG

PDIP−8

(Pb−Free)

50 Units/Rail

UC2845BD

SOIC−14

55 Units/Rail

UC284xBDR2

SOIC−14

2500 Tape & Reel

UC2845BDR2G

SOIC−14

(Pb−Free)

2500 Tape & Reel

UC2845BD1

SOIC−8

98 Units/Rail

UC284xBD1R2

A

SOIC−8

2500 Tape & Reel

UC284xBD1R2G

SOIC−8

(Pb−Free)

2500 Tape & Reel

UC2844BN

PDIP−8

50 Units/Rail

UC384xBVD

SOIC−14

55 Units/Rail

UC3844BVDR2

SOIC−14

2500 Tape & Reel

UC384xBVD1

SOIC−8

98 Units/Rail

UC384xBVD1R2

A

SOIC−8

2500 Tape & Reel

UC384xBVN

PDIP−8

50 Units/Rail

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

x indicates either a 4 or 5 to define specific device part numbers.