概览
描述
The ISL8502AEVAL1Z evaluation board is used to evaluate the ISL8502A synchronous buck controller with internal MOSFETs.
The ISL8502A is a synchronous buck controller with internal MOSFETs packaged in a small 4mm x 4mm QFN package. The device can support a continuous load of 2A and has a very wide input voltage range. With the switching MOSFETs integrated into the IC, the complete regulator footprint can be very small and provides a much more efficient solution than a linear regulator. Power-good (PGOOD) delay for the ISL8502A has been decreased to 1ms typical (at 500kHz switching frequency) compared to 250ms (at 500kHz) for the ISL8502.
特性
- 2A continuous output current
- Integrated MOSFETs for small regulator footprint
- Adjustable switching frequency, 500kHz to 1.2MHz
- Tight output voltage regulation, ±1% over-temperature
- Wide input voltage range, 5V ±10% or 5.5V to 14V
- Wide output voltage range, from 0.6V
- Simple single-loop voltage-mode PWM control design
- Input voltage feed-forward for constant modulator gain
- Fast PWM converter transient response
- Lossless rDS(ON) high-side and low-side overcurrent protection
- Undervoltage detection
- Integrated thermal shutdown protection
- Power-good indication
- Adjustable soft-start
