NJM2374AE-TE1 Nisshinbo

NJM2374A PWM DC/DC CONVERTER IC GENERAL DESCRIPTION PACKAGE OUTLINE The NJM2374A is a PWM DC/DC converter IC. It features fixed frequency type PWM control for better noise handling and to avoid intermittent oscillation observed in a simplified controller. It is suitable for Step-Up, Step-Down and Inverting applications NJM2374AD NJM2374AM for EMI sensitive application. ( DIP8 ) ( DMP8 ) FEATURES Operating Voltage (2.5V* to 40V) NJM2374AE Operating Voltage (2.5V* to 48V) NJM2374AE NJM2374AV Wide Oscillator Frequency (100Hz to 100kHz) ( SOP8 ) ( SSOP14 ) Internal High Power Transistor 1.5A (max.) Internal Over Current Limit Circuit PWM form Switching Power Supply Control Bipolar Technology Package Outline DIP8, DMP8, SOP8 JEDEC 150mil SSOP14 *Ta =25C. At low temperature, the minimum voltage is 3.0V. PIN CONFIGURATION 1 8 PIN FUNCTION + 1. C 5. IN S 2 7 + 2. E 6. V S 3. C 7. S 3 6 T I 4. GND 8. C D 4 5 NJM2374AD NJM2374AM NJM2374AE 1 14 PIN FUNCTION + 2 13 1. C 8. IN S 2. NC 9. NC 3 12 + 3. E 10. V S 4 11 4. NC 11. NC 5 10 5. C 12. S T I 6 9 6. NC 13. NC 7 8 7. GND 14. C D NJM2374AV Ver.2011-12-08 - 1 - NJM2374A BLOCK DIAGRAM C 1 8 C S D Q S PWM Logic 1.5A R 160 E 2 7 S S I Vth=300mV Maximum ON duty 9:1 OSC BLOCK Ipk Sense + 3 6 V C T PWM COMP Vref 1.25V 2% + GND 4 ERR.AMP 5 IN (DIP8, DMP8, SOP8: PACKAGE) C 1 14 C S D Q S PWM Logic 1.5A NC 2 13 NC R 160 E 3 12 S S I Vth=300mV Maximum NC 4 ON duty 9:1 11 NC OSC BLOCK Ipk Sense + C 5 10 V T PWM COMP NC 6 9 NC Vref 1.25V 2% + GND 7 8 IN ERR.AMP (SSOP14: PACKAGE) Ver.2011-12-08 - 2 -