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General Description

The TS1935B is a current mode step up converter intended for small, low power applications. The converter input voltage ranging from 2.6V to 5.5V. The Output voltage can be set up to 27V. The frequency is 1.2MHz allows the use of small external inductors and capacitors and provides fast transient response. Internal soft start results in small inrush current and extends battery life. Internal power MOSFET with very low RDS (ON) provides high efficiency. The TS1935B automatically transits from PWM to PFM during light load condition further increasing efficiency. The converter also provides protection functions such as under-voltage lockout, current limit and thermal shutdown.

Features

● 2.6V to 5.5 V operating input voltage range

● Adjustable output voltage range up to 27V

● 1.2MHz Fixed Switching Frequency

● Internal soft-start function

● Current limit and Thermal shutdown protection

● Under voltage Lockout

● ≤ 1μA Shutdown Current

Application

● White LED Current Source

● Digital Still Cameras

● Portable Electronics

● PDA’s and Palm-Top Computers

● Local Boost Regulator