ISL6740A datasheet(5/15 Pages) INTERSIL

Part #	ISL6740A

Description	Flexible Double-Ended Voltage-Mode PWM Controller with Voltage Feed Forward

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Manufacturer	INTERSIL [Intersil Corporation]

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5 / 15 page

5

FN9195.0

February 7, 2005

Absolute Maximum Ratings

Thermal Information

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

OUTA, OUTB, Signal Pins . . . . . . . . . . . . . . . . .GND - 0.3V to VREF

VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 6.0V

Peak GATE Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A

ESD Classification

Human Body Model (Per MIL-STD-883 Method 3015.7) . . .1500V

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

Operating Conditions

Temperature Range

ISL6740AIVx. . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to 105°C

Supply Voltage Range (Typical). . . . . . . . . . . . . . . . . 9VDC-16 VDC

Thermal Resistance Junction to Ambient (Typical)

θJA (°C/W)

16 Lead TSSOP (Note 1) . . . . . . . . . . . . . . . . . . .

102

Maximum Junction Temperature . . . . . . . . . . . . . . . . -55°C to 150°C

Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C

(TSSOP- 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. All voltages are with respect to GND.

Electrical Specifications

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

Schematic. 9V < VDD < 20 V, RTD = 51.1kΩ, RTC = 10kΩ, CT = 470pF, TA = -40°C to 105°C (Note 3), Typical

values are at TA = 25°C

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

SUPPLY VOLTAGE

Start-Up Current, IDD

VDD < START Threshold

-

95

140

µA

Operating Current, IDD

RLOAD, COUTA,B = 0

-

5.0

8.0

mA

COUTA,B = 1nF

-

7.0

12.0

mA

UVLO START Threshold

6.50

7.25

8.00

V

UVLO STOP Threshold

6.00

6.75

7.50

V

Hysteresis

0.35

0.50

0.75

V

REFERENCE VOLTAGE

Overall Accuracy

IVREF = 0, -20mA

4.900

5.000

5.050

V

Long Term Stability

TA = 125°C, 1000 hours (Note 4)

-

3

-

mV

Fault Voltage

4.10

4.55

4.75

V

VREF Good Voltage

4.25

4.75

VREF

-.05

V

Hysteresis

75

165

250

mV

Operational Current (source)

-20

-

mA

Operational Current (sink)

5-

-

mA

Current Limit

-25

-

-100

mA

CURRENT SENSE

Current Limit Threshold

VERROR = VREF

0.55

0.6

0.65

V

CS to OUT Delay

-35

50

ns

CS Sink Current

-10

-

mA

Input Bias Current

-1.00

-

1.00

µA

SCSET Input Impedance

1-

-

M

Ω

SC Setpoint Accuracy

-10

-

%

PULSE WIDTH MODULATOR

VERROR Input Impedance

400

-

k

Ω

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