7

FN9110.4

April 13, 2007

SOFT-START

Charging Current

SS = 2V

-40

-55

-70

μA

Charged Threshold Voltage

4.26

4.50

4.74

V

Initial Overcurrent Discharge Current

Sustained OC Threshold < SS <

Charged Threshold

30

40

55

μA

Overcurrent Shutdown Threshold Voltage

Charged Threshold minus,

0.095

0.125

0.155

V

Fault Discharge Current

SS = 2V

0.25

1.0

-

mA

Reset Threshold Voltage

0.22

0.27

0.31

V

SLOPE COMPENSATION

Charge Current

SLOPE = 2V, 0 to +105°C

-40 to +105°C

-45

-41

-53

-53

-65

-65

μA

Slope Compensation Gain

Fraction of slope voltage added to

0.100

0.103

0.107

V/V

Discharge Voltage

-

0.1

0.2

V

GATE OUTPUT

Gate Output Limit Voltage

11.0

13.5

16.0

V

Gate VOH

-1.5

2.2

V

Gate VOL

GATE - PGND, IOUT = 150mA

IOUT = 10mA

-1.2

0.6

1.5

0.8

V

Peak Output Current

-

1.0

-

A

Output “Faulted” Leakage

1.2

2.6

-

mA

Rise Time

1V < GATE < 9V

-60

100

ns

Fall Time

1V < GATE < 9V

-15

40

ns

Minimum ON time

ISENSE to GATE w/10:1 Divider

RTCT = 4.75V through 1k

Ω

(Note 5)

--

110

ns

OVERCURRENT PROTECTION

Minimum ISET Voltage

-

-

0.35

V

Maximum ISET Voltage

1.2

-

-

V

ISET Bias Current

-1.0

-

1.0

μA

Restart Delay

150

295

445

ms

OV & UV VOLTAGE MONITOR

Overvoltage Threshold

2.4

2.5

2.6

V

Undervoltage Fault Threshold

1.38

1.45

1.52

V

Undervoltage Clear Threshold

1.41

1.53

1.62

V

Undervoltage Hysteresis Voltage

20

50

100

mV

UV Bias Current

-1.0

-

1.0

μA

Electrical Specifications

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

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

ISL6721