ISL62875 datasheet(8/22 Pages) INTERSIL

Part #	ISL62875

Description	PWM DC/DC Controller with VID Inputs for Portable GPU Core-Voltage Regulator

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Manufacturer	INTERSIL [Intersil Corporation]

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8

September 18, 2009

FN6905.1

Absolute Maximum Ratings

VCC, PVCC, PGOOD to GND . . . . . . . . . . . . . -0.3V to +7.0V

VCC, PVCC to PGND . . . . . . . . . . . . . . . . . . -0.3V to +7.0V

GND to PGND . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V

EN, SET0, SET1, SET2, VO,

VID0, VID1, FB, OCSET, SREF . . . -0.3V to GND, VCC + 0.3V

BOOT Voltage (VBOOT-GND) . . . . . . . . . . . . . . . -0.3V to 33V

BOOT To PHASE Voltage (VBOOT-PHASE) . . . -0.3V to 7V (DC)

-0.3V to 9V (<10ns)

PHASE Voltage . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 28V

GND -8V (<20ns Pulse Width, 10µJ)

UGATE Voltage . . . . . . . . . . . . VPHASE - 0.3V (DC) to VBOOT

VPHASE - 5V (<20ns Pulse Width, 10µJ) to VBOOT

LGATE Voltage . . . . . . . . . . GND - 0.3V (DC) to VCC + 0.3V

GND - 2.5V (<20ns Pulse Width, 5µJ) to VCC + 0.3V

Thermal Information

Thermal Resistance (Typical)

θJA (°C/W)

20 Ld µTQFN Package (Notes 4, 5) . . . . . . . .

84

Junction Temperature Range . . . . . . . . . . . -55°C to +150°C

Operating Temperature Range . . . . . . . . . . -10°C to +100°C

Storage Temperature. . . . . . . . . . . . . . . . . -65°C to +150°C

Pb-free Reflow Profile . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

Recommended Operating Conditions

Ambient Temperature Range . . . . . . . . . . -10°C to +100°C

Converter Input Voltage to GND . . . . . . . . . . . . 3.3V to 25V

VCC, PVCC to GND . . . . . . . . . . . . . . . . . . . . . . . .5V ±5%

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact

product reliability and result in failures not covered by warranty.

NOTES:

4. 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.

5. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.

Electrical Specifications These specifications apply for TA = -10°C to +100°C, unless otherwise stated.

All typical specifications TA = +25°C, VCC = 5V. Boldface limits apply over the operating

temperature range, -10°C to +100°C.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 7) TYP

MAX

(Note 7) UNIT

VCC and PVCC

VCC Input Bias Current

IVCC

EN = 5V, VCC = 5V, FB = 0.55V, SREF < FB

-

1.1

1.5

mA

VCC Shutdown Current

IVCCoff EN = GND, VCC = 5V

-

0.1

1.0

µA

PVCC Shutdown Current

IPVCCoff EN = GND, PVCC = 5V

-

0.1

1.0

µA

VCC POR THRESHOLD

Rising VCC POR Threshold Voltage

VVCC_THR

4.40

4.49

4.60

V

Falling VCC POR Threshold Voltage

V

VCC_THF

4.10

4.22

4.35

V

REGULATION

Reference Voltage

VREF(int)

-

0.50

-

V

System Accuracy

VID0 = VID1 = GND, PWM Mode = CCM

-0.75

-

+0.75

%

PWM

Switching Frequency

FSW

PWM Mode = CCM

450

500

550

kHz

VO

VO Input Voltage Range

VVO

0

-

3.6

V

VO Input Impedance

RVO

EN = 5V

-

600

-

kΩ

VO Reference Offset Current

IVOSS

VENTHR < EN, SREF = Soft-Start Mode

-

10

-

µA

VO Input Leakage Current

IVOoff

EN = GND, VO = 3.6V

-

0.1

-

µA

ERROR AMPLIFIER

FB Input Bias Current

IFB

EN = 5V, FB = 0.50V

-20

-

+50

nA

SREF

SREF Operating Voltage Range

VSREF

Nominal SREF Setting with 1% Resistors

0.5

-

1.5

V

Soft-Start Current

ISS

SREF = Soft-Start Mode

10

20

30

µA

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