2011/09/06

Rev.A.3

5

EM8800A

TOFF section

Off Time

R_TOFF=30K ohm

6

us

R_TOFF=10K ohm

1.8

2

2.2

us

Minimum Off Time

R_TOFF=1K ohm

0.435

us

Maximum Off Time

R_TOFF=60K ohm

12

us

TOFF Short Protection Trigger Level

0.3

0.4

0.5

V

Off Time Variation vs. VCC

VCC=9.5V to 16V

2

%

Off Time Variation vs. Temperature

-20°C to 105°C

5

%

PWMD Section

PWMD ON Voltage Threshold

2.2

V

PWMD OFF Voltage Threshold

0.8

V

PWMD Pin Open Voltage

N

5

V

PWMD Pin Internal Pull High Current

2

4

6

uA

Dimming Wake-up Time

1

us

LD/SS Section

LD/SS Pin Open Voltage

5

V

LD/SS Pin Internal Pull High Current

18

20

22

uA

LD/SS Pin Voltage to Peak Current Ratio

2.85

3

3.15

V/V

FAULT Section

FAULT Internal Pull Low Current

6

10

uA

FAULT Pull high Voltage

5

V

FAULT Pull high Capability

1

2

mA

Protection Section

Maximum On Time

50

us

Over Current Trigger Level

1.45

1.5

1.6

V

Suspend mode Vcs over voltage protection

1.45

1.5

1.6

V

OCP Leading Edge Blanking Time

550

ns

Start-up Delay

80

130

160

ms

Thermal Shutdown

135

155

°C

Thermal Shutdown Hysteresis

40

°C

Note 1.

Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for

stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the

operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended

periods may remain possibility to affect device reliability.

Note 2.

θ

°C /W on JEDEC 51-7 (4 layers,2S2P) thermal test board with 50mm

2

copper area.

Note 3.

Devices are ESD sensitive. Handling precaution is recommended.

Note 4.

The device is not guaranteed to function outside its operating conditions.