ISL6334DIRZ datasheet(7/28 Pages) INTERSIL

7 / 28 page

FN6802.2

August 31, 2010

PIN-ADJUSTABLE OFFSET

Voltage at OFS Pin

Offset resistor connected to ground

390

400

415

Voltage below VCC, offset resistor connected to

VCC

1.574

1.60

1.635

OSCILLATORS

Accuracy of Switching Frequency Setting

RT = 100kΩ

225

250

275

kHz

Adjustment Range of Switching Frequency

(Note 8)

0.08

1.0

MHz

Soft-start Ramp Rate

RSS = 100kΩ (Notes 8, 9, 10)

1.563

mV/µs

Adjustment Range of Soft-Start Ramp Rate

(Note 8)

0.625

6.25

mV/µs

PWM GENERATOR

Sawtooth Amplitude

(Note 8)

1.5

ERROR AMPLIFIER

Open-Loop Gain

RL = 10kΩ to ground (Note 8)

Open-Loop Bandwidth

(Note 8)

MHz

Slew Rate

(Note 8)

V/µs

Maximum Output Voltage

3.8

4.4

4.9

Output High Voltage @ 2mA

3.6

Output Low Voltage @ 2mA

1.6

REMOTE-SENSE AMPLIFIER (Note 8)

Bandwidth

-20

MHz

Output High Current

VSEN - RGND = 2.5V

-500

500

µA

Output High Current

VSEN - RGND = 0.6

-500

500

µA

PWM OUTPUT

Sink Impedance

PWM = Low with 1mA Load

100

220

300

Source Impedance

PWM = High, Forced to 3.7V

200

320

400

PSI# INPUT

High Signal Threshold

0.8

Low Signal Threshold

0.4

CURRENT SENSE AND OVERCURRENT PROTECTION

Sensed Current Tolerance

ISEN1 = ISEN2 = ISEN3 = ISEN4 = 40µA;

CS Offset and Mirror Error Included, RISENx = 200Ω

36.5

µA

ISEN1 = ISEN2 = ISEN3 = ISEN4 = 80µA;

CS Offset and Mirror Error Included, RISENx = 200Ω

µA

Overcurrent Trip Level for Average Current At Normal

CCM PWM Mode

CS Offset and Mirror Error Included, RISENx = 200Ω

105

117

µA

Overcurrent Trip Level for Average Current at PSI#

Mode

N = 4, Drop to 1-Phase

121

µA

Peak Current Limit for Individual Channel

115

129

146

µA

IMON Clamped and OCP Trip Level

1.085

1.11

1.14

Electrical Specifications Operating Conditions: VCC = 5V, Unless Otherwise Specified. Boldface limits apply over the operating

temperature ranges, -40°C to +85°C or 0°C to +70°C. (Continued)

PARAMETER

TEST CONDITIONS

MIN

(Note 6)

TYP

MAX

(Note 6) UNITS

ISL6334D

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