LM5008AMM/NOPB

The LM5008AMM/NOPB is a 350mA Non-synchronous Constant On-time Buck Regulator with minimum input operating voltage is 6V. The LM5008A step down switching regulator features all of the functions needed to implement an efficient, buck bias regulator. This high voltage regulator contains an100V N-channel buck switch. The regulator is based on a control scheme using an ON time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to Vout. This scheme ensures short circuit control while providing minimum fold-back. Other features include thermal shutdown, VCC under-voltage lockout, gate drive under-voltage lockout, maximum duty cycle limiter and a pre-charge switch.

• Integrated 100V N-channel buck switch
• Internal start-up regulator
• No loop compensation required
• Ultra-fast transient response
• On time varies inversely with input voltage
• Operating frequency remains constant with varying line voltage and load current
• Highly efficient operation
• Precision internal reference
• Low bias current
• Intelligent current limit
• Thermal shutdown
• Green product and no Sb/Br

Applications

Power Management, Automotive, Communications & Networking