LR478 Datasheet, PDF (1/8 Pages) Unisonic Technologies – LINEAR INTEGRATED CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD
LR478
LINEAR INTEGRATED CIRCUIT
REGULATOR+RESET IC
 DESCRIPTION
The UTC LR478 developed for use in CD-ROM drives,
combines a 3V regulator adapted to low power consumption with
a much-sought reset function (regulator input monitoring),with
internal delay circuit, set to detect 4.2V.
 FEATURES
*Large Output Current: 300mA (max.)
*High Ripple Rejection Rate: 80dB(typ.)
*Internal Thermal Shutdown Circuit
*Internal Current Limiting Circuit
*Easy Set Delay Time from Voltage Detection to Reset Release
 ORDERING INFORMATION
Order Number
Lead Free
Halogen Free
LR478L-xx-S08-T
LR478G-xx-S08-T
LR478L-xx-S08-R
LR478G-xx-S08-R
Note: XX: Output Voltage, refer to Marking Information.
Package
SOP-8
SOP-8
Packing
Tube
Tape Reel
 OUTPUT DETECTION VOLTAGE RANK LIST
PART NUMBER
LR478-3.4V
LR478-3.3V
LR478-2.5V
REGULATOR OUTPUT VOLTAGE (V)
3.40±0.05
3.30±0.05
2.50±0.05
 MARKING INFORMATION
PACKAGE VOLTAGE CODE
DETECTION VOLTAGE (V)
4.20±0.09
4.20±0.09
4.20±0.09
MARKING
SOP-8
25: 2.5V
33: 3.3V
34: 3.4V
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