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                                      SY20666 - 1.5MHz, 5A Continuous/6A Peak, 18V Input Buck

                                      Features

                                      ·           4.5V to 18V input voltage range

                                      ·           Output voltage range:

                                      o   0.6V to 5.5V with feedback resistor divider

                                      o   0.68V to 1.95V through I2C interface

                                      ·           Integrated low RDS(ON) switches: (Top FET/Bottom FET): 50/15 m?

                                      ·           5A continuous/6A peak output current capability

                                      ·           Instant PWM architecture to achieve fast transient responses

                                      ·           1.5 MHz pseudo-constant switching frequency

                                      ·           0.6V+/-1% feedback reference voltage

                                      ·           Enable control

                                      ·           Power good indicator

                                      ·           Adjustable soft-start time

                                      ·           Cycle-by-cycle current limit protection

                                      ·           Hic-cup mode output short circuit protection

                                      ·           I2Ccompatible interface:

                                      o   Supports 100kHz standard mode and 400kHz fast mode

                                      o   7-Bits programmable output voltage from 0.68V to 1.95V with 10mV/Step and slew rate control

                                      o   Power good status read back

                                      o   Over temperature warning read back

                                      o   On/Off control

                                      o   PSM/PWM light load mode control

                                      ·           Thermal shutdown with auto recovery

                                      ·           Input UVLO

                                      ·           RoHS Compliant and Halogen Free

                                      ·           Compact package: QFN5x5-20

                                      Typical Application

                                      Description

                                      SY20666 is a high efficiency synchronous buck regulator which integrates a power IC and an inductor into a compact 5x5x2 mm QFN package. The device operates over a wide input voltage range from 4.5V to 18V and is capable of delivering 5A continuous, 6A peak output current. The output voltage is 0.6V to 5.5V adjustable with external feedback resistor divider, or 0.68V to 1.95V programmable through I2C interface with 10mV/step.


                                      SY20666 features adjustable soft-start time, enable control and power good indicator for system sequence control. The device also provides cycle-by-cycle current limit, short circuit protection and thermal shutdown protection for reliable operation.

                                      Applications

                                      ·         Mobile handsets

                                      ·         Portable applications

                                      ·         Other space constrained applications

                                      湖北十一选五遗漏走势图

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