LTC3026EDD#PBF

LTC®3026 is a very low dropout (VLDO™) linear regulator that can operate at input voltages down to 1.14V. The device is capable of supplying 1.5A of output current with a typical dropout voltage of only 100mV. To allow operation at low input voltages this includes a boost converter that provides the necessary headroom for the internal LDO circuitry. Output current comes directly from the input supply to maximize efficiency. The boost converter requires only a small chip inductor and ceramic capacitor for operation. A user supplied boost voltage can be used eliminating the need for an inductor altogether. The device has a low 0.4V reference voltage which is used to program the output voltage via two external resistors. The device also has internal current limit, overtemperature shutdown, and reverse output current protection. Typical applications are high efficiency linear regulator, post regulator for switching supplies, microprocessor supply.

• Excellent supply rejection even near dropout, shutdown disconnects load from VIN and VBST
• Stable with 10µF or greater ceramic capacitors
• Operating voltage range from 1.14 to 3.5V (TJ=25°C. VIN=1.5V, VOUT=1.2V, CIN=CBST=4.7µF, COUT=10µF)
• Operating current is 1160µA typical (IOUT=0mA, VOUT=0.8V, V active-low SHDN=VIN, VIN=1.2V)
• Shutdown current is 20µA max (V active-low SHDN=0V, VIN=3.5V, TJ=25°C. VIN=1.5V, VOUT=1.2V)
• Boost output voltage range from 4.8 to 5.2V (V active-low SHDN=VIN)
• Boost output drive is 7mA (VIN <lt/> 1.4V)
• 10-lead plastic DFN package
• Temperature rating range from -40°C to 125°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party