LR1122D Datasheet, PDF (1/9 Pages) Unisonic Technologies – LOW NOISE 200mA LDO REGULATOR

UNISONIC TECHNOLOGIES CO., LTD
LR1122D
LOW NOISE 200mA LDO
REGULATOR
„ DESCRIPTION
The UTC LR1122D 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 LR1122D, 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 LR1122D 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 LR1122D.
The UTC LR1122D 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.
„ FEATURES
*Ultra Supply Current:
18µA (Typ.)
*Standby Mode:
0.1µA (Typ.)
*Very Low Dropout Voltage:
0.13V (Typ.)
@I_OUT =150mA, V_OUT =2.85V
*Ripple Rejection:
75dB (Typ.)
@f=1kHz,V_OUT=2.85V
*Temperature-Drift Coefficient
±30ppm/°C (Typ.)
of Output Voltage:
*Well Line Regulation:
0.02%/ V (Typ.)
* Output Voltage Accuracy:
±0.8% (Typ.)
*Internal Fold Back Protection Circuit: 40mA (Typ.) @ short mode
*CIN=COUT=1µF or more (Ceramic capacitors) are recommended to
be used with this IC
„ ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
LR1122DL-xx-AF5-R
LR1122DG-xx-AF5-R
Note: xx: Output Voltage, refer to Marking Information.
Package
SOT-25
CMOS IC
Packing
Tape Reel
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