NR891D Datasheet PDF – PWM Controller IC, DIP 8

Part Number: NR891D, NR891

Function:  PWM Controller IC, Step-down Switching Mode Regulator IC

Package: DIP 8 Pin Type

Manufacturer: Sanken, SK

NR891D image


This is Step-down Switching Mode Regulator IC.

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

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


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


NR891D pinout


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


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