UNISONIC TECHNOLOGIES CO., LTD

LR9133

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 4

Copyright © 2017 Unisonic Technologies Co., Ltd

LOW NOISE 300mA LDO

REGULATOR

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DESCRIPTION

The UTC LR9133 is a typical LDO (linear regulator) with the

features of high output voltage accuracy, low supply current, low

ON-resistance, and high ripple rejection.

During operation of the UTC LR9133, the dropout voltage is

very low and the response of line transient and load transient are

very well.

Internally, there’re many functions of UTC LR9133 which can

be seen in the block figure. There are a voltage reference unit, an

error amplifier, resistor-net for voltage setting, a current limit circuit,

and a chip enable circuit in each UTC LR9133.

The UTC LR9133 can be used as an ideal of the power supply

for hand-held communication equipment, such as: power source for

portable communication equipment, power source for electrical

appliances, for example, cameras, VCRs and camcorders and

power source for battery-powered equipment.

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FEATURES

* Ultra Supply Current:

36µA (Typ.)

* Standby Mode:

0.1µA (Typ.)

* Very Low Dropout Voltage:

* Ripple Rejection:

* Temperature-Drift Coefficient

of Output Voltage:

±100ppm/°C (Typ.)

* Well Line Regulation:

0.02%/ V (Typ.)

*Output Voltage Accuracy:

±2.0%

* Internal Fold Back Protection Circuit: 80mA (Typ.) (Current at short mode)

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ORDERING INFORMATION

Ordering Number

Lead Free

Halogen Free

Package

Packing

LR9133L-xx-AF5-R

LR9133G-xx-AF5-R

SOT-25

Tape Reel

Note: xx: Output Voltage, refer to Marking Information.