LD7242 Datasheet | Leadtrend

3/5/2012 Highly-Integrated 6-Channel DC/DC Power Management IC REV：02 General Description The LD7242 is a high-efficiency plete solution for power supply of digital video cameras (DVCs). With six internal MOSFET DC-DC converters, it provides a maximum efficiency of 95% and generates all the critical power suppliers in DV systems. The LD7242 includes 6 channels of converter and 3 LDOs and Power-Good flag. See the description as below. 6 Channel DC/DC Converters: CH1 is a synchronous boost converter for motor control and HDMI. CH2 is a selectable synchronous buck/boost converter for DSC system I/O power. CH3 is a synchronous buck converter for DSP core or external memory. CH4 is a synchronous buck converter for DSP core or external memory. CH5 is a selectable high-voltage boost converter/ current source for white LEDs display. CH6 is an asynchronous boost converter for micro projector power. LDOs： LDO25 is a LDO regulator with ultra-low noise, high PSRR and soft start function for PLL. HVLDO is a high voltage input LDO regulator with ultra-low noise, high PSRR and soft start function for HDMI. RTC_LDO is LDO regulator with low quiescent current and high output voltage accuracy for Real Time Clock. The LD7242 also Features internal pensation to minimize external ponent count. For the plete protection, the LD7242 provides over current protection, over/under voltage protection, and thermal shutdown protection. The LD7242 can operate in 1-cell lithium-ion (Li+) or dual-battery (2AA) designs. It is available in a pact 32-Pin, 4mm x 4 mm WQFN package. +Patented Features ‧ Supply Voltage Range：1.5V to 5.5V ‧ Integrated Power MOSFET Switch ‧ Synchronous Buck Converter -Up to 95% Efficiency -Up to 100% Duty Cycle ‧ Synchronous Boost Converter - Up to 95% Efficiency - All Boost Converters with OVP -True Shutdown function ‧ Built-in with CH1, CH2, CH3, CH4 and LDO25 Power ON/OFF Sequence Control Pin ‧ Boost Mode LED Driver for WLED -PWM Dimming -LED...