SD6834 Offline Flyback PWM Controller IC — DIP-8, HV Startup, OCP/OVP/OTP (5-Pack)

SD6834 Offline Flyback PWM Controller — DIP-8, HV Startup, OCP/OVP/OTP

The SD6834 is a current-mode PWM controller IC designed for offline flyback switching power supplies. Featuring a built-in high-voltage startup circuit, it eliminates the need for an external startup resistor, reducing component count and improving efficiency. Comprehensive protection functions including OCP, OVP, OTP, and burst mode make it suitable for charger, adapter, and SMPS repair applications.

Key Specifications

Parameter	Value
Package	DIP-8
Topology	Offline flyback (current mode)
HV Startup	Built-in (no external resistor needed)
Switching Frequency	65kHz (typical)
Soft-Start	Yes (internal)
Protection	OCP, OVP, OTP, burst mode
Supply Voltage (VCC)	8–30V
Quantity	5 pieces

Why Choose SD6834?

• Built-in HV startup — no external startup resistor, fewer components
• Full protection suite — OCP/OVP/OTP prevents damage under fault conditions
• Burst mode — improves light-load efficiency for charger standby compliance
• DIP-8 package — easy to prototype and replace in existing SMPS boards
• 5-pack value — ideal for repair stock and prototyping

Typical Applications

• Offline flyback SMPS (5V/12V/24V adapters)
• USB charger and phone charger repair
• LED driver power supply
• Industrial switching power supply
• Set-top box and router power supply repair

Package Contents

• 5× SD6834 Flyback PWM Controller IC (DIP-8)

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