LX8821CDF データシートの表示（PDF） - Microsemi Corporation

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LX8821CDF

DUAL CHANNEL 2.5A LOW DROPOUT REGULATOR

Microsemi Corporation 

LX8821

TM

®

DUAL CHANNEL 2.5A LOW DROPOUT REGULATOR

PRODUCTION DATA SHEET

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C ≤ TA ≤ 100°C except where

otherwise noted and the following test conditions: VCTRL = 5V, VPWR = 3.3V IOUT = 5mA, C1, 2, 3, 4 = 10μF (Tantalum), and TJ = TA using

low duty cycling methods. Typical values represent performance @ 23°C

Parameter

` FIXED OUTPUT: VOUT 1

Total Output Voltage Variation

Line Regulation

Load Regulation

Current Limit

Minimum Load Current

` ADJUSTABLEOUTPUT: VOUT 2

Output Voltage

Line Regulation

Load Regulation

Dropout Voltage, VOUT 2

Adjust Pin Current

Current Limit

Minimum Load Current

` ENTIRE REGULATOR

Minimum Operating Voltage

Under Voltage Lockout

Quiescent Current

Ripple Rejection

RMS Output Noise

Thermal Shutdown

Symbol

Test Conditions

V1

ΔV1(VIN)

ΔV1(I1)

I1 (MAX)

I1

5mA < I1 < 2.5A, 3.75V < VCTRL < 8V

3.3V < VPWR < 5.5V

3.3V<VCTRL<10V, 3.3V<VPWR<5.5V, I1 = 5mA

5mA < I1 < 2.5A, VCTRL=5V, VPWR=3.3V

Note 1

V2

ΔV2(VIN)

ΔV2(I2)

VPWR-V2

VCNTR-V2

I2 (MAX)

I2

5mA < I2 < 2.5A, 3.75V < VCTRL < 8V

2.97V < VPWR < 3.63V

5mA < I2 < 2.5A, 3.75V < VCTRL < 8V,

3.3V < VPWR < 5.5V

3.3V<VCTRL<10V, 3.3V<VPWR<5.5V, I2 = 5mA

5mA < I2 < 2.5A, VCTRL=5V, VPWR=3.3V

IOUT = 2.5A, ∆VO = -2%

IOUT = 2.0A, ∆VO = -2%

IOUT = 1.0A, ∆VO = -2%

IOUT = 2.5A, ∆VO = -2%

IOUT = 1.0A, ∆VO = -2%

I1 = I2 = 5mA, TJ = 25°C

Note 1

VPWR

VCONTROL

IQ

PSRR

TJSD

VPWR Rising, 3.0V<VCTRL < 10V, Both Outputs

Guaranteed Off

I1=I2=5mA

I1 = I2 = 2.5A

f=120Hz, TJ = 25°C

10Hz < f < 10kHz

LX8821

Units

Min Typ Max

1.455 1.500 1.545 V

1

1

2.55

3.0

0

5

mV

5

mV

A

5

mA

1.225 1.25 1.275

V

1.225 1.25 1.288

0.5

5

mV

8

20

mV

0.500 0.750

0.413 0.600 V

0.167 0.400

0.95 1.10

V

0.80 1.00

0.2

1

µA

2.55

3.0

A

1

5

mA

2.6

V

3.3

V

2.2

V

3

5

mA

5

10

mA

60

75

dB

0.003

160

%VOUT

°C

Note 1: Minimum load current is defined as the amount of output current required to maintain regulation

Copyright © 2005

Rev. 1.1, 2005-03-09

Microsemi

Microsemi Microelectronics Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

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