7

FN9124.11

February 23, 2012

Current Limit, Sourcing

-20

--

mA

Current Limit, Sinking

5

--

mA

CURRENT SENSE

Input Bias Current

-1.0

-

1.0

µA

CS Offset Voltage

95

100

105

mV

COMP to PWM Comparator Offset Voltage

0.80

1.15

1.30

V

Input Signal, Maximum

0.91

0.97

1.03

V

Input Signal, Maximum (ISL6843C Only)

0.9

0.97

1.07

V

2.5

3.0

3.5

V/V

CS to OUT Delay

(Note 11)

-

25

40

ns

CS to OUT Delay (ISL6843C Only)

(Note 11)

70

ns

ERROR AMPLIFIER

Open Loop Voltage Gain

(Note 11)

60

90

-

dB

Open Loop Voltage Gain (ISL6843C Only)

(Note 11)

55

dB

Unity Gain Bandwidth

(Note 11)

3.5

5-

MHz

Reference Voltage

2.475

2.514

2.55

V

FB Input Bias Current

-1.0

-0.2

1.0

µA

COMP Sink Current

1.0

--

mA

COMP Source Current

-0.4

--

mA

COMP VOH

4.80

-

VREF

V

COMP VOL

0.4

-

1.0

V

PSRR

60

80

-

dB

OSCILLATOR

Frequency Accuracy

49

52

55

kHz

-0.2

1.0

%

Temperature Stability

(Note 11)

-

-

5

%

Amplitude, Peak-to-Peak

-1.9

-

V

RTCT Discharge Voltage

-0.7

-

V

Discharge Current

RTCT = 2.0V

7.2

8.4

9.5

mA

OUTPUT

Gate VOH

-

1.0

2.0

V

Gate VOL

-

1.0

2.0

V

Peak Output Current

-

1.0

-

A

Rise Time

-

20

40

ns

Fall Time

-

20

40

ns

PWM

Electrical Specifications

Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram” and

Boldface limits apply over the operating temperature range, -40°C to +105°C or 0°C to +70°C

PARAMETER

TEST CONDITIONS

MIN

(Note 9)

TYP

MAX

(Note 9)

UNITS

ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845