These PWM controllers serve as low-cost building blocks for a broad variety of converters in both offline and DC-DC current-mode switching power supplies.
The SiP2800, SiP2801, SiP2802, SiP2803, SiP2804 and SiP2805 are built on a BiCMOS process, and are available in an SOIC-8 package. Suitable for use in power supplies rated for outputs ranging from 10W to 250W, the new controllers can operate from a supply voltage as low as 5V.
The devices’ low start-up current of 100μA substantially reduces dissipation in any dropping resistors required for start-up, while the low operating current of 500μA also allows the SiP280x devices to use small external capacitors between the supply-voltage pin and ground.
Operating at frequencies up to 1MHz, the SiP280x controllers also enable designers to implement power-supply circuits that use small power inductors.
- Internal soft-start circuit
- Built-in leading-edge blanking on Current Sense pin
- Over-current protection
- Under-voltage lock-out
- Operating-temperature range: -40°C to 85°C
- Industrial equipment
- Telecoms and network equipment
- PoL regulators
- DC-DC converter modules
- AC-DC power supplies