ISL8502A

7

FN7940.0

October 21, 2011

System Accuracy

-1.0

+1.0

%

FB Pin Bias Current

±80

±200

nA

SOFT-START

Soft-Start Current

20

30

40

µA

Enable Soft-Start Threshold

0.8

1.0

1.2

V

Enable Soft-Start Threshold Hysteresis

12

mV

Enable Soft-Start Voltage High

2.8

3.2

3.8

V

ERROR AMPLIFIER

DC Gain

88

dB

Gain-Bandwidth Product

GBWP

15

MHz

Maximum Output Voltage

3.9

4.4

V

Slew Rate

SR

5

V/µs

INTERNAL MOSFETS

180

m

Ω

90

m

Ω

PGOOD

PGOOD Threshold

Rising Edge Hysteresis 1%

107

111

115

%

Falling Edge Hysteresis 1%

86

90

93

%

PGOOD Rising Delay (Note 11)

1

ms

PGOOD Leakage Current

5

µA

PGOOD Low Voltage

0.10

V

PGOOD Sinking Current

0.5

mA

PROTECTION

Positive Current Limit

2.1

3.5

4.5

A

2.0

3.4

4.0

A

Negative Current Limit

IOC from PHASE to PGND (Notes 9, 10)

2.2

3.0

3.5

A

IOC from PHASE to PGND (Notes 9, 10)

1.9

2.8

3.7

A

Undervoltage Level

76

80

84

%

Thermal Shutdown Setpoint

150

°C

Thermal Recovery Setpoint

130

°C

NOTES:

6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization

and are not production tested.

9. Circuit requires 150ns minimum on time to detect overcurrent condition.

10. Limits established by characterization and are not production tested.

soft-start time. The PGOOD Rising Delay specification is measured at 500kHz.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 6)

TYP

MAX

(Note 6) UNITS