LR8558-12PSA datasheet(1/11 Pages) LRC

Part #	LR8558-12PSA

Description	Low noise, fast response 500mA LDO regulato

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Manufacturer	LRC [Leshan Radio Company]

Direct Link	http://www.lrc.cn/

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Low noise, fast response 500mA LDO regulator

LR8558

General Description：

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.

Features：

•

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

L 8558-2.8V Output

2

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

0

200

400

600

Iload(mA)

L8558 Ty pical Performance

Characteristics：

LR8558 Typical Application Circuit

L 8558

Leshan Radio Co ., Ltd

1/11

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