Product Summary

The lm340hvmax is a monolithic switching regulator designed to deliver constant currents to high power LEDs. The lm340hvmax is ideal for automotive, industrial, and general lighting applications, contains a high-side N-channel MOSFET switch with a current limit of 1.5A (typical) for step-down (Buck) regulators. Applications of the lm340hvmax include: LED Driver, Constant Current Source, Automotive Lighting, General Illumination and Industrial Lighting.

Parametrics

lm340hvmax absolute maximum ratings: (1) VIN to GND: -0.3 to 45V; (2) BOOT to GND: -0.3 to 59V; (3) SW to GND: -1.5 to 45V; (4) BOOT to VCC: -0.3 to 45V; (5) BOOT to SW: -0.3 to 14V; (6) RON to GND: -0.3 to 7V; (7) Junction Temperature: 150°C; (8) Storage Temp. Range: -65 to 125°C; (9) ESD Rating: 2kV; (10) Infrared/Convection Reflow (15sec) : 235°C.

Features

lm340hvmax features: (1) Integrated 1.0A MOSFET; (2) VIN Range 6V to 75V; (3) 1.2A Output Current Over Temperature; (4) Cycle-by-Cycle Current Limit; (5) No Control Loop Compensation Required; (6) Separate PWM Dimming and Low Power Shutdown; (7) Supports all-ceramic output capacitors and capacitor-less output; (8) Thermal shutdown protection; (9) SO-8 Package, PSOP-8 Package.

Diagrams

lm340hvmax block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM3404HVMAX
LM3404HVMAX
National Semiconductor (TI)
LED Lighting Drivers
Data Sheet
0-2500: $1.10
2500-5000: $1.06
LM3404HVMAX/NOPB
LM3404HVMAX/NOPB
National Semiconductor (TI)
LED Lighting Drivers
Data Sheet
0-1: $2.50
1-25: $2.04
25-100: $1.83
100-250: $1.67