The ISL6226 provides power control and protection for two user selected output voltages required in high-performance notebook PC applications. The IC integrates a fixed, selectable frequency pulse-width-modulation (PWM) controller and a 3A LDO linear regulator controller with monitoring and protection circuitry in a single 24 lead SSOP package.

FEATUREs
• Provides Two Regulated Voltages
- Linear Regulator, User Selected, Current Limited
- High Efficiency PWM Over Wide Line and Load Range
- Synchronous Buck Converter on PWM Output
- Hysteretic Operation at Light Load
• Dual Mode Operation:
- Directly From Battery Input, VIN, of 5.6V to 24V or from VCC of 5V
• PWM Output Adjustable From 0.9V to 0.93*VIN
• Low Drop-Out (LDO) Linear Regulator Operates from Vout+0.5V to 24V
• LDO Output Adjustable
- From 0.8V to 3.8V at 0A to 3A for NPN Transistor
- From 0.8V to 3.0V at 0A to 3A for N-MOSFET
• 300/600kHz Switching Frequency Selectable
• Forced PWM Mode Control Option
• No Current-Sense Resistor Required on PWM Output
- Uses MOSFET’s rDS(ON)
- Optional Current-Sense Resistor for More Precision
• Separate Soft-Start For Both PWM and LDO
• Separate Enable Pins for both PWM and LDO for Advanced Configuration and Power Interface (ACPI)Compatibility
• Input Under voltage Lock-Out (UVLO) Protection
• Excellent Dynamic Response
- Input Voltage Feed-Forward and Current-Mode Control
• Monitors Output Voltages and Provides PGOOD Status
• Thermal Shut-Down Protection

APPLICATIONs
• Mobile PCs
• Hand-Held Portable Instruments
• Other Devices and Appliances With up to 24V Input