LM3444MMX/NOPB National Semiconductor, LM3444MMX/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM3444MMX/NOPB
• Description: IC LED DRIVER AC-DC 10MSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM3444MMX/NOPB

• Constant Current: Yes
• Constant Voltage: Yes
• Internal Driver: No
• Type - Primary: General Purpose
• Type - Secondary: High Brightness LED (HBLED)
• Mounting Type: Surface Mount
• Topology: AC DC Offline Switcher, PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Frequency: Adjustable/Selectable
• Voltage - Supply: 8 V ~ 13 V
• Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Operating Temperature: -

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Note 4: Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power dissipation exists,
special care must be paid to thermal dissipation issues in board design. In applications where high power dissipation and/or poor package thermal resistance is
present, the maximum ambient temperature may have to be derated. Maximum ambient temperature (T
temperature (T
part/package in the application (R
Typical Performance Characteristics
J-MAX-OP
V
f
= 125°C), the maximum power dissipation of the device in the application (P
SW
CC
UVLO vs Temperature
vs Input Line Voltage
θJA
), as given by the following equation: T
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A-MAX
4
= T
J-MAX-OP
– (R
Min On-Time (t
θJA
Efficiency vs Input Line Voltage
D-MAX
× P
A-MAX
D-MAX
), and the junction-to ambient thermal resistance of the
) is dependent on the maximum operating junction
).
ON
) vs Temperature
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