Texas Instruments TL2843 Current-Mode PWM Controller IC SMD (Pack of 2)

The TL2843 family of control integrated circuits provides the functionality required to construct off-line or DC-to-DC fixed-frequency current-mode control schemes with the least number of external components. An undervoltage lockout (UVLO) with a start-up current of less than 1 mA and a precision reference trimmed for accuracy at the error amplifier input are a couple of the internally built circuits.Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator (that also provides current-limit control), and a totem-pole output stage designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state.

Features

• Optimized for Off-Line and DC-to-DC Converters
• Low Start-Up Current (< 1 mA)
• Automatic Feed-forward compensation
• Pulse-by-Pulse Current Limiting
• Enhanced Load-Response Characteristics
• Undervoltage Lockout With Hysteresis
• Double-Pulse Suppression
• High-Current Totem-Pole Output
• Internally Trimmed Bandgap Reference
• 500-kHz Operation
• Error Amplifier With Low Output Resistance

Applications

• Switching regulators of any polarity
• Transformer-coupled DC/DC convertors

For More Info. Refer: Datasheet

Specification