AL3353

Functional Block Diagram

OSC

Σ

PWM

Control

PWM

EA

Current

Sense

L

Control

Logic

PWM

Comparator

OVP

Protection

Gate

Drive

Thermal

Shutdown

UVLO

COMP

FB

CS

OVP

GND

GATE

VIN

2

7

6

1

3

5

8

4

Symbol

Parameter

Rating

Unit

VIN, GATE, OVP Pin Voltage

-0.3 to 43

V

CS, FB, COMP, PWM Pin Voltage

-0.3 to 7

V

Operating Junction Temperature

+150

°C

Storage Temperature Range

-65 to +150

°C

Lead Temperature (Soldering, 10sec)

+260

°C

θ

JA

Thermal Resistance (Junction to Ambient) (Note 5)

+105

°C/W

θ

JC

Thermal Resistance (Junction to Case) (Note 5)

6.6

°C/W

–

ESD (Charge Device Model)

750

V

–

ESD (Human Body Model)

2000

V

Notes:

4. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and

functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.

Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.

5. Device mounted on 1"x1" FR-4 substrate PCB, 2oz copper, with minimum recommended pad layout.

Recommended Operating Conditions

Symbol

Parameter

Min

Max

Unit

VIN Pin Voltage

9

40

V

PWM Frequency for Analog Dimming

5

50

kHz

Ambient Temperature

-40

+105

°C

AL3353

Document number: DS41487 Rev. 2 - 2

3 of 15

www.diodes.com

February 2019

© Diodes Incorporated