EC4304C datasheet(4/8 Pages) E-CMOS

Part #	EC4304C

Description	1.5A, Hysteretic, High Brightness LED Driver with Internal Switch

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Manufacturer	E-CMOS [E-CMOS Corporation]

Direct Link	http://www.ecmos.com.tw/

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4 / 8 page

EC4304C

1.5A, Hysteretic, High Brightness

LED Driver with Internal Switch

E-CMOS Corp. (www.ecmos.com.tw)

Page 4 of 8

4F06N-Rev.F001

Absolute Maximum Rating(Note 1)

Supply Input Voltage, VIN ----------------------------------------------------------------- -0.3V to + 45V

ISENSE Voltage, VISENSE ------------------------------------------------------------------ +0.3V to -5V(measured with respect to VIN)

LX Output Voltage, VLX ------------------------------------------------------------------- -0.3V to + 45V

Adjust Pin Input Voltage, VADJ ------------------------------------------------------------ -0.3V to + 6V

Switch Output Current, ILX ----------------------------------------------------------------- 1.8A

Operation Temperature Range ---------------------------------------------------------- -40°C to +150°C

Storage Temperature Range ------------------------------------------------------------- -55°C to +150°C

Junction Temperature ---------------------------------------------------------------------- 150°C

Lead Temperature (Soldering, 10 sec) ------------------------------------------------- 260°C

ESD Rating (Note 2)

HBM (Human Body Mode) --------------------------------------------------------- 4kV

MM (Machine Mode) ----------------------------------------------------------------- 200V

Thermal Information

Package Thermal Resistance (Note 3)

SOP 8L(Exposed PAD)

θJA ------------------------------------------------------------------------ 47°C/W

SOP 8L(Exposed PAD)

θJC ------------------------------------------------------------------------ 17.9°C/W

Power Dissipation, PD @ TA = 25°C

SOP 8L(Exposed PAD) ----------------------------------------------------------------------------- 2.13W

Recommended Operation Conditions

Operating Junction Temperature Range (Note 4) ---------------------------------- -40°C to +125°C

Operating Ambient Temperature Range ---------------------------------------------- -40°C to +85°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. Devices are ESD sensitive. Handling precaution recommended.

Note 3. θJA is measured in the natural convection at TA = 25°C on a high effective thermal conductivity test board of

JEDEC 51-7 thermal measurement standard.

Note 4. The device is not guaranteed to function outside its operating conditions.

Electrical Characteristics

(VIN = 12V, TA = 25℃, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Supply Input

Supply Voltage Range

VIN

7

-

40

V

VIN POR Threshold

VINRTH

VIN Rising

-

4.95

-

V

VIN POR Threshold

VINFTH

VIN Falling

-

4.8

-

V

Quiescent Current with Output

Off

I_QOFF

ADJ pin grounded

-

20

40

μA

Quiescent Current with Output

Switching

I_QON

ADJ pin floating f = 250KHz

-

0.5

1.0

mA

ISENSE Pin

Current Sense Threshold Voltage

VISENSE

ISENSE pin with respect to VIN,

ADJ = 1.25V

95

100

105

mV

ISENSE Input Current

ISENSE

VSENSE = VIN-0,1

-

1.0

μA

Reference

Reference Voltage

VREF

ADJ pin Voltage

-

1.25

-

V

Reference Voltage Temperature

Coefficient

-

50

-

ppm/

oK

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