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