Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

BLDR to GND

-0.3V to +17V

V

-0.3V to +14V

ISNS to GND

-0.3V to +2.5V

ASNS, DIM, FLTR2, COFF to

GND

-0.3V to +7.0V

COFF Input Current

100mA

Continuous Power Dissipation

(Note 2)

Internally Limited

ESD Susceptibility

HBM (Note 3)

2 kV

Junction Temperature (T

150°C

Storage Temperature Range

-65°C to +150°C

Maximum Lead Temp.

Range (Soldering)

260°C

Operating Conditions

V

CC

8.0V to 12V

Junction Temperature

−40°C to +125°C

over the full Operating Temperature Range ( T

design, or statistical correlation. Typical values represent the most likely parametric norm at T

reference purposes only.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

BLEEDER

R

BLDR

Bleeder resistance to GND

I

230

325

Ω

V

I

VCC

Operating supply current

2.00

2.85

mA

V

CC-UVLO

Rising threshold

7.4

7.7

V

Falling threshold

6.0

6.4

Hysterisis

1

COFF

V

COFF

Time out threshold

1.225 1.276

1.327

V

R

COFF

Off timer sinking impedance

33

60

Ω

t

COFF

Restart timer

180

µs

CURRENT LIMIT

V

ISNS

ISNS limit threshold

1.174 1.269

1.364

V

t

ISNS

Leading edge blanking time

125

ns

Current limit reset delay

180

µs

ISNS limit to GATE delay

ISNS = 0 to 1.75V step

33

ns

INTERNAL PWM RAMP

f

RAMP

Frequency

5.85

kHz

V

RAMP

Valley voltage

0.96

1.00

1.04

V

Peak voltage

2.85

3.00

3.08

D

RAMP

Maximum duty cycle

96.5

98.0

%

DIM DECODER

t

ANG_DET

Angle detect rising threshold

Observed on BLDR pin

6.79

7.21

7.81

V

V

ASNS

ASNS filter delay

4

µs

ASNS VMAX

3.85

4.00

4.15

V

I

ASNS

ASNS drive capability sink

V

7.6

mA

ASNS drive capability source

V

-4.3

DIM low sink current

V

1.65

2.80

DIM High source current

V

-4.00

-3.00

V

DIM

DIM low voltage

PWM input voltage

threshold

0.9

1.33

V

DIM high voltage

2.33

3.15

V

TSTH

Tri-state threshold voltage

Apply to FLTR1 pin

4.87

5.25

V

R

DIM

DIM comparator tri-state impedance

10

M

Ω

3

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