7

FN9183.2

October 31, 2008

CT Valley Voltage

Static Threshold

0.75

0.80

0.88

V

CT Peak Voltage

Static Threshold

2.75

2.80

2.88

V

CT Pk-Pk Voltage

Static Value

1.92

2.00

2.05

V

RTD Voltage

1.97

2.00

2.03

V

OUTPUT

High Level Output Voltage (VOH)

-

0.5

1.0

V

Low Level Output Voltage (VOL)

-

0.5

1.0

V

Rise Time

-

110

200

ns

Fall Time

-

90

150

ns

UVLO Output Voltage Clamp

-

-

1.25

V

Output Delay/Advance Range

OUTAN/OUTBN Relative to OUTA/OUTB

-

-

3

ns

-40

-

-300

ns

40

-

300

ns

Delay Control Voltage Range

OUTAN/OUTBN Relative to OUTA/OUTB

OUTxN Delayed

2.575

-

5.000

V

OUTx Delayed

0

-

2.425

V

VADJ Delay Time

VADJ = 0

280

300

320

ns

VADJ = 0.5V

92

105

118

ns

VADJ = 1.0V

61

70

80

ns

VADJ = 1.5V

48

55

65

ns

VADJ = 2.0V

41

50

58

ns

VADJ = VREF

280

300

320

ns

VADJ = VREF - 0.5V

86

100

114

ns

VADJ = VREF - 1.0V

59

68

77

ns

VADJ = VREF - 1.5V

47

55

62

ns

VADJ = VREF - 2.0V

41

48

55

ns

THERMAL PROTECTION

Thermal Shutdown

(Note 3)

130

140

150

°C

Thermal Shutdown Clear

(Note 3)

115

125

135

°C

Hysteresis, Internal Protection

(Note 3)

-

15

-

°C

NOTES:

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

4. This is the maximum duty cycle achievable using the specified values of RTD and CT. Larger or smaller maximum duty cycles may be obtained

using other values for these components. See Equations 1 through 3.

5. Adjust VDD below the UVLO stop threshold prior to setting at 7V.

6. When OUTx is delayed relative to OUTLxN (VADJ < 2.425V), the delay duration as set by VADJ should not exceed 90% of the CT discharge time

(deadtime) as determined by CT and RTD.

Electrical Specifications

Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram” on page 2,

“Typical Application - Telecom Primary Side Control Half-Bridge Converter with Synchronous Rectification” on

page 3 and “Typical Application - High Voltage Input Secondary Side Control Full-Bridge Converter” on page 4.

9V < VDD < 20V, RTD = 10.0k

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. (Continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

ISL6742