ISL6326BIRZ datasheet(7/30 Pages) INTERSIL

Part #	ISL6326BIRZ

Description	4-Phase PWM Controller with 8-Bit DAC Code Capable of Precision DCR Differential Current Sensing

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Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

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7 / 30 page

7

FN9286.0

April 21, 2006

DAC Sink Current

-

300

µA

REF Source Current

45

50

55

µA

REF Sink Current

45

50

55

µA

PIN-ADJUSTABLE OFFSET

Voltage at OFS Pin

Offset resistor connected to ground

380

400

420

mV

Voltage below VCC, offset resistor connected to VCC

1.55

1.60

1.65

V

OSCILLATORS

Accuracy of Switching Frequency Setting

RT = 100kΩ

225

250

275

kHz

Adjustment Range of Switching Frequency (Note 4)

0.08

-

1.0

MHz

Soft-start Ramp Rate

RS = 100kΩ (Notes 5, 6)

-

1.563

-

mV/µs

Adjustment Range of Soft-Start Ramp Rate (Note 4)

0.625

-

6.25

mV/µs

PWM GENERATOR

Sawtooth Amplitude

-1.25

-

V

ERROR AMPLIFIER

Open-Loop Gain

RL = 10kΩ to ground (Note 4)

-

96

-

dB

Open-Loop Bandwidth

(Note 4)

-

80

-

MHz

Slew Rate

(Note 4)

-

25

-

V/µs

Maximum Output Voltage

3.8

4.3

4.9

V

Output High Voltage @ 2mA

3.6

-

V

Output Low Voltage @ 2mA

--

1.8

V

REMOTE-SENSE AMPLIFIER

Bandwidth

(Note 4)

-

20

-

MHz

Output High Current

VSEN - RGND = 2.5V

-500

-

500

µA

Output High Current

VSEN - RGND = 0.6

-500

-

500

µA

PWM OUTPUT

PWM Output Voltage LOW Threshold

Iload = ±500

μA-

-

0.5

V

PWM Output Voltage HIGH Threshold

Iload = ±500

μA4.3

-

V

CURRENT SENSE AND OVERCURRENT PROTECTION

Sensed Current Tolerance (IOUT)

ISEN1 = ISEN2 = ISEN3 = ISEN4 = 60

μA

576063

µA

Overcurrent Trip Level for Average Current

72

85

98

µA

Peak Current Limit for Individual Channel

100

120

140

µA

IOUT Trip Level for Overcurrent protection

1.85

2.0

2.15

V

THERMAL MONITORING AND FAN CONTROL

TM Input Voltage for VR_FAN Trip

1.55

1.65

1.75

V

TM Input Voltage for VR_FAN Reset

1.85

1.95

2.05

V

TM Input Voltage for VR_HOT Trip

1.30

1.40

1.50

V

TM Input Voltage for VR_HOT Reset

1.55

1.65

1.75

V

Leakage Current of VR_FAN

With externally pull-up resistor connected to VCC

-

30

µA

VR_FAN Low Voltage

With 1.25k resistor pull-up to VCC, IVR_FAN = 4mA

-

0.4

V

Electrical Specifications

Operating Conditions: VCC = 5V, Unless Otherwise Specified (Continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

ISL6326B

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ISL6326BIRZ Datasheet(PDF) 7 Page - Intersil Corporation

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