LM3414MR/NOPB National Semiconductor, LM3414MR/NOPB Datasheet - Page 15

• Manufacturer Part Number: LM3414MR/NOPB
• Description: IC LED DRIVER BUCK 1A 8-PSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Automotive, High Brightness (HBLED)r

Specifications of LM3414MR/NOPB

• Constant Current: Yes
• Topology: Low Side, PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive, General Purpose
• Type - Secondary: High Brightness LED (HBLED)
• Frequency: 250kHz ~ 1MHz
• Voltage - Supply: 4.5 V ~ 42 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width) Exposed Pad
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• Efficiency: 96%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -

To ensure normal operation of the LM3414/14HV, it is rec-
ommended to set the dimming frequency not higher than 1/10
of the switching frequency. The minimum dimming duty cycle
FIGURE 5. Shortened Current Slew up Time of the LM3414/14HV
15
is limited by the 400 ns minimum ON time. In applications that
require high dimming contrast ratio, low dimming frequency
should be used.
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