ISL8843ABZ datasheet(4/12 Pages) INTERSIL

Part #	ISL8843ABZ

Description	Industry Standard Single-Ended Current Mode PWM Controller

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Manufacturer	INTERSIL [Intersil Corporation]

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4 / 12 page

4

FN9238.0

October 19, 2005

Absolute Maximum Ratings

Thermal Information

Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . GND - 0.3V to +30.0V

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 JESD22-A114C.01) . . . . . . . . . . .2000V

Machine Model (Per EIA/JESD22-A115-A) . . . . . . . . . . . . . .200V

Charged Device Model (Per JESD22-C191-A) . . . . . . . . . .1000V

Operating Conditions

Temperature Range

ISL8843AxZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to 105°C

ISL8843MxZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55°C to 125°C

Supply Voltage Range (Typical)

ISL8843 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V - 30V

Thermal Resistance (Typical, Note 1)

θJA (°C/W)

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

100

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

130

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

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

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

(SOIC, MSOP - 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

ISL8843A - Recommended operating conditions unless otherwise noted. Refer to Block Diagram and

Typical Application schematic. VDD = 15V, RT = 10kΩ, CT = 3.3nF, TA = -40 to 105°C (Note 3) Typical values

are at TA = 25°C

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

UNDERVOLTAGE LOCKOUT

START Threshold

8.0

8.4

9.0

V

STOP Threshold

7.3

7.6

8.0

V

Hysteresis

-0.8

-

V

Startup Current, IDD

VDD < START Threshold

-

90

125

µA

Operating Current, IDD

(Note 4)

-

2.9

4.0

mA

Operating Supply Current, ID

Includes 1nF GATE loading

-

4.75

5.5

mA

REFERENCE VOLTAGE

Overall Accuracy

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

temperature

4.925

5.000

5.050

V

Long Term Stability

TA = 125°C, 1000 hours (Note 5)

-

5

-

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

0.97

1.00

1.03

V

Gain, ACS = ∆VCOMP/∆VCS

0 < VCS < 910mV, VFB = 0V

2.5

3.0

3.5

V/V

CS to OUT Delay

-35

55

ns

ERROR AMPLIFIER

Open Loop Voltage Gain

(Note 5)

60

90

-

dB

Unity Gain Bandwidth

(Note 5)

1.0

1.5

-

MHz

Reference Voltage

VFB = VCOMP

2.475

2.500

2.530

V

ISL8843

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