RT8581 Datasheet | Richtek

Description The RT8581 is a boost converter that integrates built-in power transistors, synchronous rectification, and low supply current to provide a pact solution for systems using advanced Li-Ion batteries. The RT8581 is capable of supplying significant energy when the battery voltage falls below the voltage required by system power ICs. The RT8581 is designed to provide a minimum output voltage from a single-cell Li-Ion battery, even when the battery voltage is below the system’s minimum voltage requirement. The RT8581 is available in the WQFN-11L 2.5x2 (FC) package. The remended junction temperature range spans from - 40C to 125C, while the ambient temperature range extends from - 40C to 85C. 2 Ordering Information - Packing B: Pin 1 Orientation (Quadrant 2, Follow EIA-481) Soft-Start Time 2: 2ms Switching Frequency B: 1.2MHz C: 1.5MHz Package Type(1) FN: WQFN-11L 2.5x2 (FC) (W-Type) Mode Condition A: PFM (Pulse Frequency Modulation) B: FPWM (Force Pulse Width Modulation) C: PFM/FPWM Controlled by the Mode Pin Note 1. Richtek products are Richtek Green Policy pliant and marked with (1) indicates patible with the current requirements of IPC/JEDEC J-STD-020. 3 Features - Input Voltage Range: 2V to 12V - Output Voltage Range: 4.5V to 12.6V - Up to 94.5% Efficiency at VIN = 5V, VOUT = 12V, and IOUT = 1A - Soft-Start-Up Time (< 2msec) - Adjustable Switching Frequency: 1.2MHz and 1.5MHz - Adjustable Peak Current Limit: Up to 10A (Typical) - PFM Operation Mode at Light Load (RT8581A) - Forced PWM Operation Mode at Light Load (RT8581B) - PFM/FPWM Controlled by the Mode Pin (RT8581C) - Internal Synchronous Rectifier - Overvoltage Protection at 13.2V - Over-Temperature Protection - WQFN-11L 2.5x2 (FC) Package 4 Applications - RF PA Drivers - NAND Flashes - Backup Power - Motor Drivers - Optical Sensor Drivers - Portable POS Terminals 5 Marking Information For marking information, contact our sales representative directly or through a Richtek distributor...