3

FN6666.5

April 7, 2011

VCC POR Threshold

Rising Edge

4.33

4.50

4.55

V

Rising Edge (ISL62391HRTZ, ISL62392HRTZ,

4.35

4.50

4.55

V

Falling Edge

4.08

4.20

4.30

V

Falling Edge (ISL62391HRTZ, ISL62392HRTZ,

4.10

4.20

4.30

V

Reference Voltage

0.6

V

Regulation Accuracy

VOUT regulated to 0.6V

-1

1

%

FB Input Bias Current

FB = 0.6V

-12

30

nA

FB = 0.6V (ISL62391HRTZ, ISL62392HRTZ,

-10

30

nA

Frequency Range

200

600

kHz

Frequency Set Accuracy

-12

12

%

VOUT Voltage Adjust Range

VIN

≥ 6V for VOUT = 5.5V

0.6

5.5

V

VOUT Soft-discharge Resistance

14

50

Ω

PGOOD Pull-down Impedance

32

50

Ω

PGOOD Leakage Current

PGOOD = VCC

0

1

µA

Maximum PGOOD Sink Current

5mA

PGOOD Soft-start Delay

(From first EN = 1 to PGOOD = 1)

EN1 = EN2 = 1

2.20

2.75

3.70

ms

EN1 = 1, EN2 = Floating or EN1 = Floating, EN2 =1

4.50

5.60

7.60

ms

EN1 = 1, EN2 = Floating or EN1 = Floating, EN2 =1

+100°C)

4.50

5.60

7.50

ms

UGATE Pull-up ON-resistance

200mA source current

1.0

1.5

Ω

UGATE Source Current

UGATE-PHASE = 2.5V

2.0

A

UGATE Pull-down ON-resistance

250mA source current

1.0

1.5

Ω

UGATE Sink Current

UGATE-PHASE = 2.5V

2.0

A

LGATE Pull-up ON-resistance

250mA source current

1.0

1.5

Ω

LGATE Source Current

LGATE-PGND = 2.5V

2.0

A

LGATE Pull-down ON-resistance

250mA source current

0.5

0.9

Ω

LGATE Sink Current

LGATE-PGND = 2.5V

4.0

A

UGATE to LGATE Deadtime

UG falling to LG rising, no load

21

ns

LGATE to UGATE Deadtime

LG falling to UG rising, no load

21

ns

Bootstrap Diode Forward Voltage

2mA forward diode current

0.58

V

Bootstrap Diode Reverse Leakage Current

0.2

1

µA

FCCM Input Voltage

Low Level (DCM enabled)

0.8

V

Float Level (audio filter enabled)

1.9

2.1

V

High Level (forced CCM)

2.4

V

FCCM Input Leakage Current

FCCM = GND or VCC

-2

2

µA

Audio Filter Switching Frequency

FCCM floating

28

kHz

EN Input Voltage

Low Level (Clear fault level/SMPS off)

0.8

V

Float Level (Delayed start)

1.9

2.1

V

High Level (SMPS on)

2.4

V

Electrical Specifications

Boldface limits apply over the operating temperature range. (Continued)

PARAMETER

CONDITIONS

MIN

(Note 4)

TYP

MAX

(Note 4)

UNITS

ISL62391, ISL62392, ISL62391C, ISL62392C