onsemi FAN5236
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 computers, PDAs, and Internet appliances. The Hysteretic Mode can be disabled separately on each PWM converter if PWM Mode is desired for all load levels. The FAN5236 monitors these outputs and generates separate PGx (pow er good) signals w hen the soft-start is completed and the output is w ithin ±10% of the set point.| Part No. | FAN5236 |
|---|---|
| Datasheet | FAN5236 Download |
| Manufacturer |  onsemi |
| Description | Dual Mobile-Friendly DDR / Dual-Output PWM Controller |
| Buy | Stock & Price |
FEATURES
● Highly Flexible, Dual Synchronous Sw itching PWM Controller that Includes Modes for: - DDR Mode w ith In-phase Operation for Reduced Channel Interference - 90° Phase-shifted, Tw o-stage DDR Mode for Reduced Input Ripple - Dual Independent Regulators, 180° Phase Shifted● Complete DDR Memory Pow er Solution - VTT Tracks VDDQ/2 - VDDQ/2 Buffered Reference Output
● Lossless Current Sensing on Low -side MOSFET or Precision Over-Current Using Sense Resistor
● VCC Under-Voltage Lockout
● Converters can Operate f rom +5V or 3.3V or Battery Pow er Input (5V to 24V)
● Excellent Dynamic Response w ith Voltage Feedforw ard and Average-Current-Mode Control
● Pow er-Good Signal
● Supports DDR-II and HSTL
● Light-Load Hysteretic Mode Maximizes Efficiency
● TSSOP28 Package
APPLICATIONS
● DDR VDDQ and VTT Voltage Generation● Mobile PC Dual Regulator
● Server DDR Pow er i
● Hand-held PC Pow er
DESCRIPTION
Synchronous rectification and hysteretic operation at light loads contribute to high efficiency over a w ide range of loads.
