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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LP6250 데이터시트(PDF) 1 Page - Lowpower Semiconductor inc |
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LP6250 데이터시트(HTML) 1 Page - Lowpower Semiconductor inc |
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1 / 8 page  Preliminary Datasheet LP6250 LP6250 –00 Version 1.0 Datasheet Sep.-2010 www.lowpowersemi.com Page 1 of 8 2.1A Synchronous Current Boost DC/DC Regulator General Description The LP6250 is high efficiency Synchronous Boost DC/DC Converter, fixed frequency, current-mode step-up converter with output to input disconnect. A PWM step-up DC/DC converters optimized to provide a high efficiency solution to medium power system. Its PWM circuitry with built-in 2.1A@250mΩ power mosfet makes this converter highly power efficiently. Selectable high switching frequency allows faster loop response and easy filtering with a low noise output. The non-inverting input its error amplifier is connected to an internal 0.5V precision reference voltage. Soft-start time can be programmed with an external capacitor, which sets the input current ramp rate. Current mode control and external compensation network make it easy and flexible to stabilize the system. the devices regulates the output voltage up to 5V from either a 2cell NiMH/NiCd or a single-cell Li-ion Battery with a 500KHz fixed frequency switching. These features minimize overall solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. Ordering Information LP6250 - □ □ □ F: Pb-Free Package Type QV: TDFN-10 Marking Information Please see website. Features Up to 94% efficiency Shut-down current:<1uA Output voltage Up to 5V 500KHz fixed frequency switching High switch on current:2.1A@250mΩ Available in TDFN-10 Package Applications Battery products Host Products Motor Power Devices Typical Application Circuit LP6250QVF 6 9 3 10 1 4 2 5 7 BATT SW FB GND EN LBO OUT GND LBI R2 10K C3 22pF 5V R3 100K R5 ON/OFF R1 90K C1 22uF R5 6.8uH C2 47uF R4 Vin LBO Pin Configurations 3 4 OUT FB 2 7 5 LBO NC GND GND LBI BATT 10 9 EN GND 6 1 SW 8 11 |
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