Step-Down Switching Regulator IC With Over Current Protection

Manufacturer's part number :


Manufacturer New Japan Radio

New Japan Radio

Description :

The NJU7640 is a low voltage operation high-speed switching regulator control IC for step-down converter, with a pulse-by-pulse over-current protection. The pulse-by-pulse over-current protection circuit can limit the over current in switching operation. It incorporates a totem pole output, which can drive an external MOS-FET easily. It also has a soft-start function and dead time control and their times are all adjustable with external parts. The NJU7640 is available in a small and thin 8-lead MSOP(TVSP) package.

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  • PWM switching control
  • Pulse-by-pulse over current protection
  • Operating Voltage (2.2V to 8V)
  • Wide Oscillator Range (300kHz to 1MHz)
  • Maximum Duty Cycle (100%)
  • Quiescent Current (800µA typ.)
  • Soft-Start Function (Internal : 16ms typ. or adjustable)
  • Dead Time Control
  • C-MOS Technology
  • Package Outline (NJU7640RB1 : MSOP8(TVSP8)*MEET JEDEC MO-187-DA / THIN TYPE)
Features Similar products
Switching frequency (kHz) 1000  

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Max Input Voltage (V) 8  
Typ. Active Current (µA) 0.8  
Output Current (mA) 0.22  
Operating Temperature (°C) -40 to +85  
Package DMP-8