8283 datasheet(4/8 Pages) ALLEGRO

Part #	8283

Description	LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR

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Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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4 / 8 page

8283

LNB SUPPLY AND

CONTROL-VOLTAGE REGULATOR

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

4

ELECTRICAL CHARACTERISTICS at T

A = 25°C, ENT = L, EN = H, OSEL = H, LLC = L, VIN = 24 V,

I

OUT = 50 mA (unless otherwise noted).

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Overload Flag Logic Low

V

OL

I

OL = 8 mA

—

0.28

—

V

Overload Flag Leakage Current

I

OZ

V

OH = 5.5 V

—

<1.0

—

µA

Logic Input Voltage

V

IL

——

0.8V

V

IH

2.0

—

V

Logic Input Current

I

IH

V

IH = 5 V

—

<1.0

—

µA

Supply Current

I

IN

Outputs disabled (EN = L)

—

0.5

—

mA

ENT = H, I

O = 600 mA, VO = 13 V

—

382

—

mA

Thermal Shutdown Temp.

T

J

—

165

—

°C

Linear Regulator Voltage Drop

∆V

BUCK

V

BULK – VO

—0.8—

V

Switching Frequency

f

O

16 • f

tone

320

352

384

kHz

Bypass Switch Current Limit

I

swM

OSEL = L

630

900

—

mA

Bypass Switch Voltage Drop

V

sw

OSEL = L, I

sw = 300 mA

—

0.15

—

V

(MI to LNB)

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