XD3846 – Current-Mode PWM Controller – Xinluda

The XD3846 from Xinluda is a fixed-frequency, current-mode PWM controller in a DIP-16 package, featuring dual 500mA peak totem-pole outputs, 500kHz operating capability, and a +/-1% bandgap reference. It belongs to the industry-standard UC3846/SG3846 controller family.

The XD3846 is a fixed-frequency, current-mode PWM controller manufactured by Xinluda Information Technology Co., Ltd. Supplied in a through-hole DIP-16 package, the XD3846 is designed for current-mode-controlled switched-mode power supplies and belongs to the widely used UC3846 / SG3846 controller family. It delivers the core building blocks needed to implement fixed-frequency current-mode control with a minimum of external components, while improving line regulation and load-transient response.

Key Features

• Current-mode PWM control architecture
• Dual 500mA (peak) totem-pole outputs for driving push-pull, half-bridge, and dual-switch topologies
• 500kHz maximum operating frequency
• +/-1% bandgap reference
• Programmable pulse-by-pulse current limiting
• Automatic feedforward compensation
• Automatic symmetry correction in push-pull configuration
• Differential current-sense amplifier with wide common-mode range
• Double-pulse suppression
• Undervoltage lockout (UVLO)
• Soft-start capability
• Parallel operation capability for modular power systems
• Operating temperature range: 0°C to +70°C
• Package: DIP-16 (through-hole)

Applications

• DC/DC converters (boost, flyback, forward, half-bridge, push-pull)
• High-power switching power supplies
• UPS and inverter power supplies
• High-power chargers
• Modular and parallel-able power systems

Why Source XD3846 from Pacific Component Xchange

The XD3846 is a specialized PWM controller with little to no authorized-distributor stock, which makes it a challenge for buyers maintaining or building current-mode power-supply designs. Pacific Component Xchange specializes in hard-to-find and obsolete power-management ICs and can help you secure the XD3846 when conventional channels come up empty.

Every order is backed by our commitment to authenticity and quality, with inspection and traceability processes to protect against counterfeit parts. We support global shipping and flexible quantities, whether you need a handful of units for a repair or volume for a production run. Because this is a Request-For-Quote part, contact Pacific Component Xchange today to request a quote on the XD3846 and let our sourcing team locate the stock you need.