AN-SY7152

Applications Note: AN_ SY7152 High Efficiency 1MHz, 2A Step Up Regulator Preliminary Specification General Description The SY7152 is a high efficiency boost regulator targeted for general step-up applications. Ordering Information SY7152 □(□□)□ Temperature Code Package Code Optional Spec Code Temperature Range: -40°C to 85°C Ordering Number Package type Note SY7152ABC SOT23-6 2A Features Wide input range: 3-8V bias input, 16Vout max 1MHz switching frequency Minimum on time: 100ns typical Minimum off time: 100ns typical Low RDS(ON): 150mΩ RoHS Compliant and Halogen Free Accurate Reference: 0.6VREF Compact package: SOT23-6 Applications WLED Drivers Networking cards powered from PCI or PCI- express slots Typical Applications Figure 1. Schematic Diagram Figure 2. Efficiency vs Load Current AN_SY7152 Rev.0.1 Silergy Corp. Confidential- Prepared for Customer Use Only 1 Pinout (top view) AN_SY7152 （SOT23-6） Top Mark: LExyz (Device code: LE, x=year code, y=week code, z= lot number code) Pin Name IN GND LX FB EN Pin Number 5 2 1 3 4 Pin Description Input pin. Decouple this pin to GND pin with 1uF ceramic cap. Ground pin Inductor node. Connect an inductor between IN pin and LX pin. Feedback pin. Connect a resistor R1 between VOUT and FB, and a resistor R2 between FB and GND to program the output voltage: VOUT=0.6V*(R1/R2+1). Enable control. High to turn on the part. Don’t leave it floated. NC 6 No connection. Absolute Maximum Ratings (Note 1) LX,...