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The PST751xx family of low-dropout (LDO), low-power
linear regulators offers very high power supply
rejection ratio (PSRR) while maintaining very low 35mA
ground current. The family uses an advanced CMOS process
and a PMOSFET pass device to achieve fast start-up, very
low noise, excellent transient response, and excellent
PSRR performance. The PST751xx is stable with a 1.0mF
ceramic output capacitor, and uses a precision voltage
reference and feedback loop to achieve a worst-case
accuracy of 3% over all load, line, process, and
temperature variations. It is fully specified from TJ
= –40°C to +125°C and is offered in a small TSOT23-5
package, SOIC-8, and a ultra-small 2mm × 2mm DFN package
with a thermal pad, which are ideal for small form
factor portable equipment such as wireless handsets and
PDAs.
The PST751xx is available in standard fixed output
voltages of 1.2V (PST75112), 1.5V (PST75115), 1.8V
(PST75118), 2.5V (PST75125), 2.8 (PST75128), 3.0V
(PST75130), 3.3V (PST75133), and custom voltage options
(50mV step options between 0.8V and 5.0V are available
upon request).
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