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Small-scale Green-mode PWM Flyback Power Controller

Product ID: SG6848

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The SG6848 is the best choice for replacing linear and RCC-mode power adapters.
This highly-integrated PWM controller features several enhancements designed to enable low-power standby-power features on small power supplies (less than 20 Watt). The SG6848 is manufactured using a Bi-CMOS process, reducing the minimum required start-up and operating currents. This has the advantage of improved power conversion efficiency. The minimum start-up current is typically 5uA, and the operating current 2mA.
During normal operation, the SG6848 acts as a fixed frequency PWM controller. This frequency can be configured simply by changing an external resistor. Under reduced-load conditions, its patented Green-mode circuitry will automatically decrease the PWM frequency. The PWM frequency linearly decreases to reduce power consumption, while providing a stable output voltage. This dramatically reduces power usage under zero-load and light-load conditions, and helps the power supply meet even the strictest power conservation requirements.
Features
  • Green-mode PWM supports the "Blue Angel" standard.
  • Low start-up current of 5uA; low operating current of 2mA.
  • Leading-edge blanking.
  • Constant power output over a wide input range.
  • Built-in Synchronized Slope Compensation.
  • Current mode operation.
  • Cycle-by-cycle current limiting.
  • Under Voltage Lockout (UVLO).
  • Programmable PWM frequency.
  • Gate output maximum voltage clamped at 15V.
  • A low cost solution requiring few external components.
  • Small SOT-236 package.
Part No. Pin Configuration Package Type
SG6848D 8 Pin DIP Plastic
SG6848T 6 Pin SOT-236

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Multimedia, Power Management & Control, Wireless Communication ICs, General purpose mixed-signal ICs, Scanner ICs, IP development, Manual Device Programmers, Automated Device Programming, Testing Systems