ISL6423B_14 datasheet(5/16 Pages) INTERSIL

Part #	ISL6423B

Description	Single Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs

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Manufacturer	INTERSIL [Intersil Corporation]

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5 / 16 page

5

FN6412.1

April 10, 2007

Absolute Maximum Ratings

Thermal Information

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0V to 18.0V

Logic Input Voltage Range

(SDA, SCL, ENT, DSQIN 1 and 2, SEL18V 1 and 2) . -0.5V to 7V

Thermal Resistance (Typical, Notes 2, 3)

θJA (°C/W) θJC (°C/W)

QFN Package (Notes 2, 3) . . . . . . . . . .

38

4.5

EPTSSOP Package (Notes 2, 3) . . . . .

35

2.5

Maximum Junction Temperature (Note 4) . . . . . . . . . . . . . . . +150°C

Maximum Storage Temperature Range . . . . . . . . . . -40°C to +150°C

Operating Temperature Range . . . . . . . . . . . . . . . . . -20°C to +85°C

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

2.

θ

JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See

Tech Brief TB379.

3. For

θJC, the "case temp" location is the center of the exposed metal pad on the package underside.

4. +150°C max junction temperature is intended for short periods of time to prevent shortening the lifetime. Operation close to +150°C junction may

trigger the shutdown of the device even before +150°C, since this number is specified as typical.

Electrical Specifications

VCC = 12V, TA = -20°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. EN = H, VTOP

VBOT = L, ENT = L, DCL = L, IOUT = 12mA, unless otherwise noted. See software description section for I

2C

access to the system.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Operating Supply Voltage Range

812

14

V

Standby Supply Current

EN = L

-

1.5

3.0

mA

Supply Current

IIN

EN = VTOP = VBOT = ENT = H, No Load

-

4.0

8.0

mA

UNDERVOLTAGE LOCKOUT

Start Threshold

7.5

-

7.95

V

Stop Threshold

7.0

-

7.55

V

Start to Stop Hysteresis

350

400

500

mV

SOFT-START

COMP Rise Time (Note 5)

(Note 5)

-

8196

-

Cycles

Output Voltage (Note 5)

VO1

(Refer to Table 1)

13.04

13.3

13.56

V

VO1

(Refer to Table 1)

14.02

14.3

14.58

V

VO1

(Refer to Table 1)

17.94

18.3

18.66

V

VO1

(Refer to Table 1)

19.00

19.3

19.68

V

Line Regulation

DVO1,

DVO2

VIN = 8V to 14V; VO = 13.3V

-

4.0

40.0

mV

VIN = 8V to 14V; VO = 18.3V

-

4.0

60.0

mV

Load Regulation

DVO1,

DVO2

IO = 0mA to 350mA

-

50

80

mV

IO = 0mA to 750mA

-

100

200

mV

Dynamic Output Current Limiting

IMAX

DCL = 0, ISEL H = 0, ISEL L = 0 (Note 8)

275

305

345

mA

DCL = 0, ISEL H = 0, ISEL L = 1 (Note 8)

515

570

630

mA

DCL = 0, ISEL H = 1, ISEL L = 0 (Note 8)

635

705

775

mA

DCL = 0, ISEL H = 1, ISEL L = 1 (Note 8)

800

890

980

mA

Dynamic Overload Protection Off Time

TOFF

DCL = 0, Output Shorted (Note 8)

-

900

-

ms

Dynamic Overload Protection On Time

TON

-

51

-

ms

Static Output Current Limiting

IMAX

DCL = 1 (Note 8)

-

1000

-

mA

Cable Fault CABF Threshold

ICAB

EN = 1, VO = 19V, No Tone.

2

10

20

mA

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