Absolute Maximum Ratings

(LM3464/LM3464A) (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

(LM3464/LM3464A)

V

-0.3V to 100V

DR1, DR2, DR3, DR4 to GND

-0.3V to 100V

EN to GND

-0.3V to 5.5V

All other inputs to GND

-0.3V to 7V

ESD Rating (Note 2)

Human Body Model

±2 kV

Storage Temperature Range

−65°C to + 150°C

Junction Temperature (T

+ 150°C

Operating Ratings (LM3464)

Supply Voltage Range (VIN)

12V to 80V

Junction Temperature Range (T

−40°C to + 125°C

Thermal Resistance (

θ

33.5°C/W

Thermal Resistance (

θ

6°C/W

Operating Ratings (LM3464A)

Supply Voltage Range (VIN)

12V to 95V

Junction Temperature Range (T

−40°C to + 125°C

Thermal Resistance (

θ

33.5°C/W

Thermal Resistance (

θ

6°C/W

+25°C only; limits in boldface type apply over the full Operating Junction Temperature (T

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

and are provided for reference purposes only. Unless otherwise stated the following conditions apply: V

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Vcc Regulator

V

IN-UVLO

Vin under voltage lockout

V

8.5

V

V

IN-UVLO-HYS

Vin UVLO hysteresis

V

95

mV

V

CC

VCC output voltage

C

No load

6.15

6.3

6.51

V

V

CC-UVLO

VCC under-voltage lockout threshold

(UVLO)

V

4.98

5.28

V

V

CC-UVLO-HYS

VCC UVLO hysteresis

V

250

mV

I

IN

Quiescent Current from VIN

C

No load

1.65

2.3

3

mA

I

VCC

VCC Current limit

V

18

mA

Device Enable

V

EN-DISABLE

Device disable voltage threshold

V

2.1

2.55

3

V

I

EN-MAX

EN pin internal pull current

V

7.2

11

14.7

uA

Analog Dimming Control Interface

V

CTHM-MAX

Sawtooth max. voltage threshold at

Thermal_Cap pin

100% output duty cycle

2.95

3.25

3.3

V

V

CTHM-MIN

Sawtooth min. voltage threshold at

Thermal_Cap pin

0% output duty cycle

0.325

0.4

0.493

V

I

CTHM

Thermal_Cap pin output current

38.9

50

61

uA

PWM Dimming Control Interface

V

DIM-LED-ON

DIM pin voltage threshold at LED ON

V

V

1.19

V

V

DIM-LED-OFF

DIM pin voltage threshold at LED OFF

V

V

1.3

V

Dynamic Headroom Control Output

V

OutP-MAX

OutP pin max. output voltage

V

V

V

OutP-MIN

OutP pin min. output voltage

IoutP = 1 mA current sink

0.3

V

V

LEDFB-LED-ON

VLedFB pin voltage threshold at LED ON

2.4

2.5

2.58

V

V

LEDFB-SYS-RST

System restart VLedFB pin voltage

threshold for system restart

Measure at VLedFB pin

1.2

V

5

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