8A, 18V Synchronous Step-Down Regulator Delivers 8A from 7mm x 8mm QFN
The LTC3608 uses internal switches with an RDS(ON) of only 10mOhms and 8mOhms to deliver efficiencies as high as 95%. The LTC3608 can be configured for discontinuous or forced continuous operation. Forced continuous operation reduces noise and RF interference while discontinuous mode provides high efficiency by reducing switching losses at light loads requiring only 900uA of quiescent current. Shut down quiescent current is only 15uA. Additional features include a Power Good voltage monitor, adjustable current limit, output overvoltage protection and programmable soft-start.
The LTC3608EWKG is available from stock in a 52-lead, 7mm x 8mm QFN package. Pricing starts at $7.50 in 1,000-piece quantities. An industrial grade version, the LTC3608IWKG is tested and guaranteed to operate from a -40°C to 125°C operating junction temperature and is priced at $8.63 in 1,000-piece quantities. All versions are available from stock.
Summary of Features: LTC3608 Output Current
- Wide VIN Range = 4V to 18V
- Internal N-Channel MOSFETs
- True Current Mode Control
- Optimized for High Step-Down Ratios
- tON(MIN) 100nsec
- Extremely Fast Transient Response
- Stable with Ceramic COUT
- ±1% 0.6V Voltage Reference
- Power Good Output Voltage Monitor
- Adjustable On-Time/Switching Frequency
- Adjustable Current Limit
- Programmable Soft-Start
- Output Overvoltage Protection
- Optional Short-Circuit Shutdown Timer
- Low Shutdown IQ: 15uA
- Available in a 7mm × 8mm 52-Pin QFN Package
LINEAR TECHNOLOGY GmbH
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, uModule(TM) products, and many other analog functions. Applications for Linear Technology's high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems. For more information, visit www.linear.com.
LT, LTC, LTM, Burst Mode and are registered trademarks and uModule is a trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.
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