ISL6845IB datasheet(4/9 Pages) INTERSIL

Part #	ISL6845IB

Description	Improved Industry Standard Single Ended Current Mode PWM Controller

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Manufacturer	INTERSIL [Intersil Corporation]

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4

Absolute Maximum Ratings

Thermal Information

Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . GND - 0.3V to +20.0V

OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VDD + 0.3V

Signal Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 6.0V

Peak GATE Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A

ESD Classification

Human Body Model (Per MIL-STD-883 Method 3015.7) . . .2000V

Charged Device Model (Per EOS/ESD DS5.3, 4/14/93) . . .1000V

Operating Conditions

Temperature Range

ISL684xIx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 105oC

Supply Voltage Range (Typical)

ISL6843/5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V-16V

ISL6842/4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V-18V

Thermal Resistance (Typical, Note 1)

θJA (oC/W)

SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

100

MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .

130

Maximum Junction Temperature . . . . . . . . . . . . . . . -55oC to 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.

θ

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

2. All voltages are with respect to GND.

Electrical Specifications

Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application

schematic. VDD = 15V (Note 6), Rt = 10kΩ, Ct = 3.3nF, TA = -40 to 105

oC (Note 3), Typical values are at

TA = 25

oC

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

UNDERVOLTAGE LOCKOUT

START Threshold (ISL6843, ISL6845)

7.8

8.4

9.0

V

START Threshold (ISL6842, ISL6844)

13.3

14.3

15.3

V

STOP Threshold (ISL6843, ISL6845)

6.7

7.2

7.7

STOP Threshold (ISL6842, ISL6844)

8.0

8.8

9.6

V

Hysteresis (ISL6843, ISL6845)

-

0.8

-

V

Hysteresis (ISL6842, ISL6844)

-

5.4

-

V

Start-Up Current, IDD

VDD < START Threshold

-

60

100

µA

Operating Current, IDD

(Note 4)

-

3.3

4.0

mA

Operating Supply Current, ID

Includes 1nF GATE loading

-

4.1

5.5

mA

REFERENCE VOLTAGE

Overall Accuracy

Over line (VDD = 12V to 18V), load,

temp

4.925

5.000

5.050

V

Long Term Stability

TA = 125

oC, 1000 hours (Note 5)

-

5

-

mV

Fault Voltage

4.40

4.65

4.85

V

VREF Good Voltage

4.60

4.80

VREF-0.05

V

Hysteresis

50

165

250

mV

Current Limit, Sourcing

-20

-

mA

Current Limit, Sinking

5-

-

mA

CURRENT SENSE

Input Bias Current

VCS = 1V

-1.0

-

1.0

µA

CS Offset Voltage

VCS = 0V (Note 5)

95

100

105

mV

COMP to PWM Comparator Offset Voltage

VCS = 0V (Note 5)

0.80

1.15

1.30

V

Input Signal, Maximum

0.91

0.97

1.03

V

ISL6842, ISL6843, ISL6844, ISL6845

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