1-A, low-dropout voltage regulator

The TLV1117LV low-dropout (LDO) linear regulator

is a low input voltage version of the popular TLV1117 voltage regulator.

The TLV1117LV is an extremely low-power device

that consumes 500 times lower quiescent current than traditional 1117 voltage

regulators, making the device designed for applications that mandate very low

standby current. The TLV1117LV LDO is also stable with 0 mA of load current; there

is no minimum load requirement, making the device a good choice for applications

where the regulator must power very small loads during standby in addition to large

currents on the order of 1 A during normal operation. The TLV1117LV offers excellent

line and load transient performance, resulting in very small magnitude undershoots

and overshoots of output voltage when the load current requirement changes from less

than 1 mA to more than 500 mA.

A precision band-gap and error amplifier provides

1.5% accuracy. A very high power-supply rejection ratio (PSRR) enables use of the

device for post-regulation after a switching regulator. Other valuable features

include low output noise and low-dropout voltage.

The device is internally compensated to be stable with 0-Ω equivalent series resistance (ESR) capacitors. These key advantages enable the use of cost-effective, small-size ceramic capacitors. Cost-effective capacitors that have higher bias voltages and temperature derating can also be used if desired.

The TLV1117LV is available in a SOT-223

package.