LX8610-33CDM datasheet(4/6 Pages) MICROSEMI

4 / 6 page

Microsemi

Linfinity Microelectronics Division

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

Page 4

Rev. 0.6f,2000-09-15

LX8610-xx

1A BiCMOS Very Low Dropout Regulators

PRELIMINARY DATASHEET

M I CROSEM I

COM P A N Y

LX8610

Parameter

Symbol

Min

Typ

Max

Units

Input Voltage

VIN

5.5

Load Current (with adequate heatsinking)

1000

Input Capacitor (VIN to GND)

2.2

µF

Output Capacitor (VOUT to GND)

22*

µF

* Size your output capacitor to meet the transient loading requirement. If you have a very dynamic load, a larger capacitor will improve the response to

these load steps.

Unless otherwise specified, the following specifications apply over the operating ambient temperature 0

°C

≤ T

≤ 125°C except where

otherwise noted. Test conditions: VIN = VOUT + 1.5V; IOUT = 10mA; CIN = 10µF; COUT = 22µF; TJ = TA.

LX8610-xx

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

LX8610-33 FIXED 3.3V, 1A

TJ = 25

°C

3.25

3.3

3.35

Output Voltage

VOUT

Over Temperature

3.22

3.38

Line Regulation

VREG

VIN = 3.45V to 5.5V

Load Regulation

IREG

IOUT = 10mA to 1A

IOUT = 1A, VOUT

OUT –1%

0.25

0.4

IOUT = 0.5A, VOUT

OUT – 1%

0.15

0.25

Dropout Voltage (VDO = VIN–VOUT)

VDO

IOUT = 10mA, VOUT

OUT – 1%

0.05

0.15

Short Circuit Current

ISC

VOUT = 0V

1.25

1.7

Quiescent Current

IOUT = 10mA to 1A

400

600

µA

0V < VIN < VOUT, VOUT <3.4V (at VOUT)

400

650

µA

Reverse Leakage Current

IREV

OV < VIN < VOUT, VOUT <3.4V (at VIN)

-50

Shutdown Threshold *

VSD

0.8

VIN / 2

Shutdown Current *

ISD

ENABLE < 0.8V

µA

LX8610-25 FIXED 2.5V, 1A

TJ = 25

°C

2.46

2.5

2.54

Output Voltage

VOUT

Over Temperature

2.44

2.5

2.56

Line Regulation

VREG

VIN = 3.1V to 5.5V, IOUT = -10mA

Load Regulation

IREG

IOUT = 10mA to 1A

IOUT = 1A, VOUT

OUT –1%

0.25

0.4

IOUT = 0.5A, VOUT

OUT – 1%

0.15

.025

Dropout Voltage (VDO = VIN–VOUT)

VDO

IOUT = 10mA, VOUT

OUT – 1%

0.05

0.1

Short Circuit Current

ISC

VOUT = 0V

1.25

1.7

Quiescent Current

IOUT = 10mA to 1A

300

600

µA

0V < VIN < VOUT, VOUT < 2.6V (at VOUT)

400

650

µA

Reverse Leakage Current

IREV

0V < VIN < VOUT, VOUT <2.6V (at VIN)

-50

Shutdown Threshold

VSD

0.8

VIN / 2

Shutdown Current

ISD

ENABLE < 0.8V

µA

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