Step-Up Regulator with 4A Integrated Switch

The ISL97656 is a high frequency, high efficiency current mode control non-synchronous step-up voltage regulator operated at constant PMW switching frequency. It has an internal 4.0A, 120mΩ Low side MOSFET and can deliver high output current and efficiency over 90%. The selectable 640kHz and 1.22MHz switching frequency allows use of smaller inductor and faster transient response. An external compensation pin gives the user flexibility in setting frequency compensation allowing the use of low ESR ceramic output capacitors.

FEATUREs
• 4.0A, Low rDS(ON) Integrated Low Side MOSFET
• +2.2V to +6.0V Operating Input Voltage Range
• +1.1*VIN to +24V Output Voltage Range
• 640kHz or 1.22MHz Switching Frequency
• Higher Efficiency and Better Thermal Performance
• Adjustable Soft-Start
• Internal Thermal Protection
• 0.8mm Maximum Height 10 Ld TDFN Package
• Pb-Free (RoHS Compliant)
• Halogen Free

APPLICATIONs
• Portable Equipment, Digital Cameras
• TFT-LCD Displays, DSL Modems
• PCMCIA Cards, GSM/CDMA Phones