北京华泱科技有限公司

LM2735 / LM2735 -Q1 520kHz / 1.6MHz的a ????节省空间的升压型和SEPIC DC- DC稳压器 LM2735/LM2735-Q1 520kHz/1.6MHz a€“ Space-Efficient Boost and SEPIC DC-DC Regulator

DESCRIPTION

The LM2735 is an easy-to-use, space-efficient 2.1A low-side switch regulator ideal for Boost and SEPIC DC-DC regulation. It provides all the active functions to provide local DC/DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to either 520kHz or 1.6MHz, allowing the use of extremely

small surface mount inductor and chip capacitors while providing efficiencies up to 90%.

FEATURES

• Input Voltage Range 2.7V to 5.5V

• Output Voltage Range 3V to 24V

• 2.1A Switch Current over Full Temperature Range

• Current-Mode Control

• Logic High Enable Pin

• Ultra Low Standby Current of 80 nA in Shutdown

• 170 mΩ NMOS Switch

• ±2% Feedback Voltage Accuracy

• Ease-of-Use, Small Total Solution Size

– Internal Soft-Start

– Internal Compensation

– Two Switching Frequencies

– 520 kHz (LM2735-Y)

– 1.6 MHz (LM2735-X)

– Uses Small Surface Mount Inductors and Chip Capacitors

– Tiny SOT-23, WSON, and MSOP-PowerPAD Packages

• LM2735-Q1 is AEC-Q100 Grade 1 Qualified and is Manufactured on an Automotive Grade Flow

APPLICATIONS

• LCD Display Backlighting For Portable Applications

• OLED Panel Power Supply

• USB Powered Devices

• Digital Still and Video Cameras

• White LED Current Source

• Automotive