LR8558_15 Datasheet, PDF (1/11 Pages) Leshan Radio Company – Low noise, fast response 500mA LDO regulato

Leshan Radio Co ., Ltd
LR8558
Low noise, fast response 500mA LDO regulator
Features：
General Description：
• Low Power Consumption: 75uA（Typ.）
• Low output noise (47uVRMS)
• Standby Mode: 0.1uA
• Low dropout Voltage: 0.46V@500mA (Typ.)
• High Ripple Rejection: 66dB@100Hz (Typ.)
• Low Temperature Coefficient: ±100ppm/°C
• Excellent Line regulation: 0.05%/V
• Build-in chip enable and discharge circuit
• Output Voltage Range: 1.2V~4.5V
(customized on command every 0.1V step)
• Highly Accurate: ±2% (±1% customized)
• Output Current Limit
Applications：
• Power source for cellular phones and
various kind of PCSs
• Battery Powered equipment
• Power Management of MP3, PDA, DSC,
Mouse, PS2 Games
• Reference Voltage Source
• Regulation after Switching Power
LR8558 series is a group of positive
voltage output, low power consumption, low
dropout voltage regulator.
LR8558 can provide output value in the
range of 1.2V~4.5V every 0.1V step. It also
can be customized on command.
LR8558 includes high accuracy voltage
reference, error amplifier, current limit circuit
and output driver module with discharge
capability.
LR8558 has excellent load and line
transient response and good temperature
characteristics, which can assure the stability
of chip and power system. And it uses
trimming technique to guarantee output
voltage accuracy within±2%.
LR8558 is available in SOT-23-5, SC-82
packages which is lead free. It also can
available in these packages with lead.
LR8558 Typical Application Circuit
L58558
L8558 Ty pical Performance
Characteristics：
L58558-2.8V Output
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2
0
200
400
600
Iload(mA)
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