Description
1-1-3 DC/DC Converter ICs NR887D/NR891D Full-Mold, Separate Excitation Step-down Switching Mode Regulator ICs *.
Features
* Current Mode Control, Synchronous Rectifier Step-down Switching Mode
* Absolute Maximum Ratings
* DIP 8 pin package
* Input voltage range (VIN): VO + 3 to 18 V
* Synchronous rectifier mode
* High efficiency: 90%
* Introduction of current mode control meth
Applications
* Parameter Input Voltage Power Dissipation Junction Temperature Storage Temperature Thermal Resistance (Junction to Lead (4 pins)) Thermal Resistance (Junction to Ambient Air)
Symbol VIN PD Tj Tstg θj-c θj-a
Ratings 20 1.50
* 40 to +150
* 40 to +150
25 67
Unit V W °C °C
°C/W °C/W
C
