1-1-3 DC/DC Converter ICs
NR887D/NR891D Full-Mold, Separate Excitation Step-down Switching Mode Regulator ICs
■Feature...
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 method A ceramic capacitor can be used for output Built-in phase correction component Output current: 2 A Reference voltage and accuracy of 0.8 V ± 2% Oscillation frequency: 500 kHz Output ON/OFF available Undervoltage lockout Soft start function
■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
Conditions When mounted...
