GENERAL DESCRIPTION
FEATURES
The synchronous buck of the uP1561 adopts constanton-time PWM scheme that features easy-to-use, low external component count, fast transient response and quasi- constant frequency operation over the operation range or in current mode to support ceramic output capacitors. The 3A source/sink VTT LDO has fast transient response, requiring only two 10uF of ceramic output capacitors. In addition, the LDO supply input is available externally to significantly reduce the total power losses. The uP1561 supports all the sleep state controls, in S3 state (suspend to RAM) VTT is at high-Z and in S4/S5 (s
uPI Semiconductor
