The ISL97536 is a synchronous, integrated FET 1A step-down regulator with internal compensation. It operates with an input voltage range from 2.5V to 6V, which accommodates supplies of 3.3V, 5V, or a Li-ion battery source. The output can be externally set from 0.8V to VIN with a resistive divider.

The ISL97536 features PWM control with a 1.4MHz typical switching frequency. The typical no load quiescent current is only 500μA. Additional features include a 100ms Power-On- Reset output, <1μA shutdown current, short-circuit protection, and over-temperature protection.

The ISL97536 is available in the 10 Ld MSOP package, making the entire converter occupy less than 0.15in² of PCB area with components on one side only. The 10 Ld MSOP package is specified for operation over the full -40°C to +85°C temperature range.

• Less than 0.15in² footprint for the complete 1A converter
• Components on one side of PCB
• Max height 1.1mm MSOP10
• 100ms Power-On-Reset output (POR)
• Internally-compensated voltage mode controller
• Up to 95% efficiency
• <1μA shutdown current
• 500μA quiescent current
• Hiccup mode overcurrent and over-temperature protection
• Pb-free (RoHS compliant)

• PDA and pocket PC computers
• Bar code readers
• Cellular phones
• Portable test equipment
• Li-ion battery powered devices
• Small form factor (SFP) modules