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LR41228 Schematic ( PDF Datasheet ) - UNISONIC TECHNOLOGIES

Teilenummer LR41228
Beschreibung CMOS IC
Hersteller UNISONIC TECHNOLOGIES
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Gesamt 7 Seiten
LR41228 Datasheet, Funktion
UNISONIC TECHNOLOGIES CO., LTD
LR4XXYY
Preliminary
DualLow-Noise200mA LDO
REGULATOR
CMOS IC
DESCRIPTION
The U TC LR4XXYY are dual voltage regu lator ICs that have
high output voltage accuracy, low dropout, low supply current, and
high ri pple rej ection. Ever y Channel of UT C LR4XXYY series
consists of a voltage ref erence u nit an d over temp erature
protection, simultan eity; a lso consists of an error am plifier, a
current limit circuit, resistors fo r setting outp ut voltage, and a chip
enable circu it, respectively. T he EN1 and E N2 pins contro l each
output respectively, When both outputs shutdown simultaneously,
the chi p will be turn off an d cons umes nearly z ero o peration
current which is suitable for battery-power devices.
The load transient respons e and line transient response of the
UTC LR4XXYY Series are excellent, so these ICs are suit able for
hand-held communication equipment power supply.
FEATURES
* 200mA Guaranteed Output Current(Each LDO)
* Dual Shutdown Pins Control Each Output
* 120mV Dropout at 100mA Load
* Current Limiting Protection
* Thermal Shutdown Protection
* Excellent Line/Load Transient
* RoHS Compliant and 100% Lead (Pb)-Free
ORDERING INFORMATION
Note:
Ordering Number
Lead Free
Halogen Free
LR4XXYYL-AG6-R
LR4XXYYG-AG6-R
XXYY: Output Voltage, refer to Marking Information.
54
6
1 23
SOT-26
Package Packing
SC59-6
Tape Reel
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
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LR41228 Datasheet, Funktion
LR4XXYY
TEST CIRCUITS(Cont.)
Preliminary
Pulse
Generator PG
EN2
VOUT2
GND
VIN
EN1
VOUT1
CMOS IC
C3
2.2μF
IOUT2
C2
2.2μF
IOUT1
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
Fig.4 Load Transient Response Test Circuit
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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