NR891D Datasheet – PWM Controller IC

Part Number : NR891D, NR891

Manufacturers : SK

Function :  PWM Controller IC

Package : DIP 8 Pin Type

Image :
NR891D image

Description

1. Full-Mold, Separate Excitation Step-down Switching NR887D/NR891D Mode Regulator ICs

2. Current Mode Control, Synchronous Rectifier Step-down Switching Mode

Features

1. Input voltage range (VIN): VO + 3 to 18 V
2. Synchronous rectifier mode
3. High efficiency: 90%
4. Introduction of current mode control method
5. A ceramic capacitor can be used for output
6. Built-in phase correction component
7. Output current: 2 A
8. Reference voltage and accuracy of 0.8 V ± 2%
9. Oscillation frequency: 500 kHz
10. Output ON/OFF available
11. Undervoltage lockout
12. Soft start function

Pinout

NR891D pinout

Applications

1. Power supply for LCDTV and PDP
2. Power supply for DVD, BD, and STB
3. On-board local power supply
4. Power supply for switches

NR891D Datasheet