LM3429MH/NOPB National Semiconductor, LM3429MH/NOPB Datasheet - Page 5

• Manufacturer Part Number: LM3429MH/NOPB
• Description: IC LED DRVR HP CONS CURR 14TSSOP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: High Power, Constant Currentr

Specifications of LM3429MH/NOPB

• Constant Current: Yes
• Topology: PWM, SEPIC, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: Automotive
• Type - Secondary: High Brightness LED (HBLED)
• Frequency: 2MHz
• Voltage - Supply: 4.5 V ~ 75 V
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP Exposed Pad, 14-eTSSOP 14-HTSSOP
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): No
• Efficiency: 95%
• For Use With: LM3429BSTEVAL - BOARD EVAL FOR BOOST LM3429LM3429BKBSTEVAL - BOARD EVAL FOR BUCK-BOOST LM3429
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: LM3429MH

Typical Performance Characteristics
Boost LED Current vs. Input Voltage
Boost Efficiency vs. Input Voltage
V
V
V
O
O
O
= 32V (9 LEDs)
= 32V (9 LEDs)
= 20V (6 LEDs)
Analog Dimming
(Note
(Note
(Note
9)
9)
8)
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300944b8
300944b9
5
T
A
=+25°C and V
Buck-boost LED Current vs. Input Voltage
Buck-Boost Efficiency vs. Input Voltage
IN
V
V
V
O
O
O
= 14V unless otherwise specified
= 20V (6 LEDs)
= 20V (6 LEDs)
= 20V (6 LEDs)
PWM Dimming
(Note
(Note
(Note
8)
8)
8)
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300944c0
300944b7
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