The CS51220 is a single output PWM controller with switching frequency up to 500 kHz. The feed forward voltage mode control provides excellent line regulation for wide input range. This PWM controller has a synchronization output allowing programmable phase delay. For overcurrent protection, the “soft hiccup” technique effectively limits the output current with maximum flexibility. In addition, this device includes such features as: soft start, pulse–by–pulse current limit, programmable foldback current limit, volt–second clamping, maximum duty cycle, overvoltage and undervoltage protection, and synchronization input. The CS51220 is available in 16 SO narrow surface mount package.
The CS51220 is a single output Pulse Width Modulation (PWM) controller designed with a feed forward voltage mode control architecture. This design provides excellent line regulation suitable for wide input voltage ranges by generating the ramp signal using the input line voltage.
Key features include programmable pulse-by-pulse overcurrent limits, soft hiccup protection, and synchronization capabilities allowing phase delay adjustment. The device is available in an SO-16 narrow surface mount package.
| Switching Frequency (Max) | 500 kHz |
|---|---|
| Reference Voltage Output | 3.3 V ±2% |
| Operating Junction Temperature | -65 to +150 °C (Storage) |
| Supply Voltage Range | 4.7 V to 16 V |
| Package Type | SO-16 Narrow Surface Mount |
The device supports a switching frequency up to 500 kHz.
It provides an accurate 3.3 V reference voltage with a tolerance of 3%.