LTC1928ES6-5#TRMPBF

LTC1928-5 is a doubler charge pump with an internal low noise, low dropout (LDO) linear regulator. The part is designed to provide a low noise boosted supply voltage for powering noise sensitive devices such as high frequency VCOs in wireless applications. This regulator is capable of supplying upto 30mA of output current. Shutdown reduces the supply current to <lt/>8µA, removes the load from VIN by disabling the regulator and discharges VOUT to ground through a 200 ohm switch. This LDO regulator is stable with only 2µF on the output. Small ceramic capacitors can be used, reducing PC board area. It is widely used in application such as VCO power supplies for cellular phones, 2-way pagers, wireless PCMCIA cards, portable medical instruments, low power data acquisition, remote transmitters, white LED drivers, GaAs switches etc.

• Low output noise is 90µVRMS (100KHz BW)
• Fixed output voltage is 5V
• Input voltage range is 2.7V to 4.4V
• No inductors required, uses small ceramic capacitors
• Switching frequency is 550KHz typical at (IOUT <gt/> 500µA, VIN = 2.7V to 4.4V, TA = 25°C)
• Operating current is 5V typical at (IOUT = 1mA, TA = 25°C)
• Internal thermal shutdown and current limiting
• Shutdown current is 4µA typical at (SHDN = 0V, TA = 25°C)
• Operating temperature is -40°C to 85°C
• Package style is 6-lead plastic SOT-23

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