ISL6520IB-T datasheet(3/11 Pages) INTERSIL

Part #	ISL6520IB-T

Description	Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

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Manufacturer	INTERSIL [Intersil Corporation]

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FN9009.4

October 4, 2005

Absolute Maximum Ratings

Thermal Information

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6.0V

Absolute Boot Voltage, VBOOT . . . . . . . . . . . . . . . . . . . . . . . +15.0V

Upper Driver Supply Voltage, VBOOT - VPHASE . . . . . . . . . . . +6.0V

Input, Output or I/O Voltage . . . . . . . . . . . GND -0.3V to VCC +0.3V

ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2

Recommended Operating Conditions

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±10%

Ambient Temperature Range - ISL6520C . . . . . . . . . . . 0oC to 70oC

Ambient Temperature Range - ISL6520I . . . . . . . . . . -40oC to 85oC

Junction Temperature Range. . . . . . . . . . . . . . . . . . -40oC to 125oC

Thermal Resistance

θJA (oC/W) θJC(oC/W)

SOIC Package (Note 1) . . . . . . . . . . . . . .

95 . . N/A

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

45 . . 7

Maximum Junction Temperature

(Plastic Package) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150oC

Maximum Storage Temperature Range . . . . . . . . -65oC to 150oC

Maximum Lead Temperature

(Soldering 10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300oC

(SOIC - Lead Tips Only)

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:

1.

θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.

2.

θJA 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.

Electrical Specifications

Recommended Operating Conditions, Unless Otherwise Noted.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNITS

VCC SUPPLY CURRENT

Nominal Supply

IVCC

UGATE and LGATE Open

2.6

3.2

3.8

mA

POWER-ON RESET

Rising VCC POR Threshold

POR

4.19

4.30

4.5

V

VCC POR Threshold Hysteresis

-0.25

-

V

OSCILLATOR

Frequency

fOSC

ISL6520C, VCC = 5V

250

300

340

kHz

ISL6520I, VCC = 5V

230

300

340

kHz

Ramp Amplitude

∆VOSC

-1.5

-

VP-P

REFERENCE

Reference Voltage Tolerance

ISL6520C

-1.5

-

+1.5

%

ISL6520I

-2.5

+2.5

%

Nominal Reference Voltage

VREF

-0.800

-

V

ERROR AMPLIFIER

DC Gain

Guaranteed By Design

-

88

-

dB

Gain-Bandwidth Product

GBWP

-

15

-

MHz

Slew Rate

SR

-

8

-

V/

µs

GATE DRIVERS

Upper Gate Source Current

IUGATE-SRC

--1-

A

Upper Gate Sink Current

IUGATE-SNK

-1-

A

Lower Gate Source Current

ILGATE-SRC

--1-

A

Lower Gate Sink Current

ILGATE-SNK

-2-

A

PROTECTION / DISABLE

OCSET Current Source

IOCSET

ISL6520C

17

20

22

µA

ISL6520I

14

20

24

µA

Disable Threshold

VDISABLE

-0.8

-

V

ISL6520

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