The RK808-D is a complete power supply solution for Portable systems. The highly integrated device includes four buck DC-DC converters, eight high performance ldos, two low Rds switches, I2C interface, programmable power sequencing and an RTC.(点击即可咨询芯片详细信息)
The RK808-D improves performance, reduces component count and size, and therefore provides lower cost solution compared to conventional portable designs. The ultra fast 2MHz current mode DC/DC architecture optimizes the transient performance and is compatible with tiny low cost ceramic inductors and capacitors. All DC/DC channels include integrated MOSFETS. Internal soft-start and compensation circuits minimize external components count. Most outputs can be programmed through the I2C interface
RK808-D’s Features:
• Input voltage range: 2.7V to 5.5V
• Low Stand-by current less than 20uA(32KHz clock running)
• 2MHz Switching Frequency for bucks
• Current mode architecture for best transient performance
• Internal compensation and soft start
• I2C Programmable output levels and power sequencing
• High efficiency architecture
• Integrated Vout Discharge Circuit for BUCK and LDO
• Power:
• CH1: Synchronous Buck regulator, 5A max
• CH2: Synchronous Buck regulator, 5A max
• CH3: Synchronous Buck regulator, 3A max
• CH4: Synchronous Buck regulator, 2.5A max
• CH6,CH7,CH9,CH11: Linear regulators, 150mA max
• CH8: Low noise and high PSRR linear regulator,100mA max
• CH10,CH12,CH13: Linear regulators, 300mA max
• CH14: Low Rds switch, 0.2ohm@Vgs=3v
• CH15: Low Rds switch, 0.2ohm@Vgs=3v
• Auxiliary: Flexible Power Sequence control
• Package: 7mmx7mm QFN68
RK808-D’Typical Application Circuit
RK808-D’Package
RK808-B’Ordering Information
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