Diodes AL5811 Manuel d'utilisateur télécharger pdf (Page 3)

AL5811

Document number: DS35255 Rev. 1 - 2

3 of 13

www.diodes.com

January 2013

NEW PRODUCT

L5811

Package Thermal Data

Package

Thermal Resistance

Junction-to-case

(Note 5)

Thermal Resistance

Junction-to-Ambient

(Note 5)

DIS

= +25°C,

= +125°C

MSOP-8EP 37 85°C/W (Note 6) 1.2W

U-DFN3030-6 13 71°C/W (Note 7) 1.40W

Notes: 5. Dominant conduction path via exposed pad.

6. Test condition for MSOP-8EP: Device mounted on FR-4 PCB (51mm x 51mm 2oz copper, minimum recommended pad layout on top layer and

thermal vias to bottom layer ground plane. For better thermal performance, larger copper pad for heat-sink is needed.

7. Test condition for U-DFN3030-6: Device mounted on FR-4 PCB (51mm x 51mm 2oz copper, minimum recommended pad layout on top layer and

thermal vias to bottom layer with maximum area ground plane. For better thermal performance, larger copper pad for heat-sink is needed

Recommended Operating Conditions (@T

= +25°C, unless otherwise specified.)

Symbol Parameter Min Max Unit

Supply Voltage Range Relative to GND Pin 3.5 60

LED

OUT Voltage Range Relative to GND Pin 1.0 60

LED

LED Pin Current (Note 8) 10 75 mA

Operating Ambient Temperature Range -40 +125 °C

Note: 8. Maximum LED current is also limited by ambient temperature and power dissipation such that junction temperature should

be kept less than or equal 125°C.

Electrical Characteristics (@T

= +25°C, V

= 3.5V, V

LED

= 1.0 (Note 9), R

SET

= 15kΩ, unless otherwise specified.)

Symbol Parameter Conditions Min Typ Max Unit

RSET

SET

Voltage

= -40°C to +125°C

0.5 V

LED

Current Accuracy

SET

= 37.5kΩ

= +25°C

18 20 22

SET

= 10kΩ

70 75 80

SET

= 15kΩ

47 50 53

= -40°C to +125°C

46 54

REG

LINE

LED Current Line Regulation

= 3.5V to 60V T

= +25°C

0.25 %

Supply Current

3.5V ≤ V

≤ 60V

= +25°C

200 300

µA

= -40°C to +125°C

350

LEAK

LED Pin Leakage Current

= 60V; V

LED

= 60V

RSET = Open Circuit

= +125°C

1 µA

SHDN

Thermal Shutdown

155 °C

HYS

Thermal Shutdown Hysteresis 20 °C

Note: 9. All voltages unless otherwise stated are measured with respect to GND pin.

1 2 3 4 5 6 7 8 ... 12 13

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Diodes AL5811 Manuel d'utilisateur Page 3

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