FAN5236 Description
The FAN5236 PWM controller provides high ef f iciency and regulation for tw o output voltages adjustable in the range of 0.9V to 5.5V required to pow er I/O, chip-sets, and memory banks in high-performance notebook puters, PDAs, and Internet appliances. Synchronous rectification and hysteretic operation at light loads contribute to high efficiency over a w ide range of loads. The Hysteretic Mode can be disabled...
FAN5236 Key Features
- Highly Flexible, Dual Synchronous Sw itching PWM
- DDR Mode w ith In-phase Operation for Reduced
- Dual Independent Regulators, 180° Phase Shifted
- plete DDR Memory Pow er Solution
- VTT Tracks VDDQ/2
- VDDQ/2 Buffered Reference Output
- Lossless Current Sensing on Low -side MOSFET or
- VCC Under-Voltage Lockout
- Converters can Operate f rom +5V or 3.3V or Battery
- Excellent Dynamic Response w ith Voltage
FAN5236 Applications
- essential for proper pow ering of DDR chips. The buffered reference voltage required by this type of memory is also provided. The FAN5236 monitors these outputs