GS9215 Datasheet | NIKO-SEM

Features - Adjustable Relative Constant on-time for fast dynamic response - Programmable VOUT range = 0.7V~20V - VIN range = 3V~28V - Wide Output Load Range: 0 to 15A - 1% reference accuracy over load and line - Low voltage DC current sense using low-side RDS _ON_L Sensing or sense resistor - Resistor programmable frequency - Cycle-by-cycle current limit - 3-Step Current Limit During Soft-start - Over-voltage/under-voltage fault protection - Low quiescent power dissipation - Power good indicator/ Power save option - Integrated gate drivers with fast transmission scheme - Enable pin - Over temperature protection(Non-Latch) - TQFN40-5x5 Package - Green Product (Ro HS, Lead-Free, Halogen-Free pliant) Applications - Notebook puters - CPU core/IO Supplies - Chip/RAM Supplies       General Description The GS9215 is small size chip with a relative constant on-time synchronous buck converter suitable for applications in notebook puters and other battery operated portable devices. Features include very wide input voltage range, high efficiency and a fast dynamic response with internal fast response scheme. The GS9215 have a unique power save mode, which can save battery power supply by decreasing frequency when load current falls down below preset critical current point. The fast dynamic transient response means that buck applications based on GS9215 will provide about 100ns-order response to load when output voltage falls down or rises up. The frequency will increase or decrease to meet the change in output load. Moreover, the GS9215 will take the same method to regulate the output voltage when input voltage changes. When transient response regulated, the controller will maintain a new steady-state operation. Both the transient response state and the new state, the GS9215 always has the same on-time. The GS9215 is suitable for the solutions which have the output voltage between 0.7V and 20V. An external setting resistor and output voltage can set the on-time, duty-cycle...