ISL8033, ISL8033A

7

FN6854.2

March 24, 2011

Positive Peak Overcurrent Limit

ISET = VDD

4.1

4.8

5.5

A

4.1

4.8

5.5

A

ISET = Float

4.1

4.8

5.5

A

2.7

3.3

3.9

A

ISET = GND

2.7

3.3

3.9

A

2.7

3.3

3.9

A

Negative Peak Overcurrent Limit

-3.5

-2.5

-1.5

A

-3.5

-2.5

-1.5

A

LX1, LX2

P-Channel MOSFET ON-Resistance

50

75

m

Ω

70

100

m

Ω

N-Channel MOSFET ON-Resistance

50

75

m

Ω

70

100

m

Ω

LX_ Maximum Duty Cycle

100

%

PWM Switching Frequency

ISL8033

0.88

1.1

1.32

MHz

ISL8033A

2.15

2.5

2.85

MHz

Synchronization Range

ISL8033 (Note 6)

2.64

6

MHz

Channel 1 to Channel 2 Phase Shift

Rising edge to rising edge timing

180

°

LX Minimum On-Time

SYNC = High (forced PWM mode)

140

ns

Soft Discharge Resistance

EN = LOW

80

100

120

Ω

LX Leakage Current

Pulled up to 6V

0.1

1

µA

PG1, PG2

Output Low Voltage

Sinking 1mA, VFB = 0.7V

0.3

V

PG_ Pin Leakage Current

PG = VIN = 6V

0.01

0.1

µA

Internal PGOOD Low Rising Threshold

Percentage of nominal regulation voltage

89.5

92

94.5

%

Internal PGOOD Low Falling Threshold

Percentage of nominal regulation voltage

85

88

91

%

Delay Time (Rising Edge)

1ms

Internal PGOOD Delay Time (Falling Edge)

7

10

µs

EN1, EN2, SYNC

Logic Input Low

0.4

V

Logic Input High

1.5

V

SYNC Logic Input Leakage Current

Pulled up to 6V

0.1

1

µA

Enable Logic Input Leakage Current

Pulled up to 6V

0.1

1

µA

Thermal Shutdown

150

°C

Thermal Shutdown Hysteresis

25

°C

NOTES:

6. The operational frequency per switching channel will be half of the SYNC frequency.

7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.

Boldface limits apply over the operating temperature range, -40°C to +85°C.

(Continued)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 7)

TYP

MAX

(Note 7)

UNITS