The LM48823TL is a high-efficiency, fixed-frequency, current-mode boost converter with an integrated 1.5A, 40V power switch. It is designed for driving white LEDs or other voltage boost applications. This converter integrates a low RDS(ON) N-channel MOSFET to provide high efficiency and minimize solution size. The LM48823TL also features internal soft-start and over-voltage protection circuits to ensure robust operation.

Applications:

• White LED Backlighting for LCD Displays
• LED Flashlights
• Boost Converters for Portable Devices
• General Lighting Applications

Features:

• High Efficiency: Up to 90%
• Fixed Frequency Operation: 1.2MHz
• Integrated 1.5A, 40V Power Switch
• Internal Soft-Start
• Over-Voltage Protection (OVP)
• Short-Circuit Protection
• Low Shutdown Current: <1μA
• Small Solution Size

Benefits:

• Extended Battery Life: High efficiency minimizes power consumption.
• Compact Design: Integrated MOSFET and small package reduce board space.
• Reliable Operation: Over-voltage and short-circuit protection ensure robustness.
• Simplified Design: Internal soft-start reduces component count and simplifies implementation.
• Stable Performance: Fixed frequency operation provides predictable and consistent performance.

Additional Details:

The LM48823TL operates at a fixed switching frequency of 1.2 MHz, allowing the use of small external components. The integrated soft-start feature minimizes inrush current during startup, preventing voltage overshoot and ensuring a smooth transition. The over-voltage protection circuit safeguards the device and downstream components from damage due to excessive output voltage. The device also incorporates short-circuit protection, adding another layer of safety. It is available in a thin SOT-23 package. Typical input voltage range is from 2.5V to 5.5V.