Texas Instruments LM3430
The LM3430 is a high voltage low-side N-channel MOSFET controller. It contains all of the features needed to implement single ended primary topologies. The LM3430 includes a start-up regulator that operates over a wide input range of 6V to 40V.| Part No. | LM3430 |
|---|---|
| Datasheet | LM3430 Download |
| Manufacturer |  Texas Instruments |
| Description | Boost Controller |
| Buy | Stock & Price |
FEATURES
1●2 Internal 40V Startup Regulator
● 1A Peak MOSFET Gate Driver
● VIN Range 6V to 40V
● Duty Cycle Limit in Excess of 90%
● Programmable UVLO with Hysteresis
● Cycle-by-Cycle Current Limit
● External Synchronizable (AC-coupled)
● Single Resistor Oscillator Frequency Set
● Slope Compensation
● Adjustable Soft-start
● WSON-12 (3mm x 3mm)
APPLICATIONS
● LED Backlight Driver (companion to LM3432)● Boost Converter
● SEPIC Converter
DESCRIPTION
Ideal for use in a boost regulator, the LM3430 can power the LED backlight in LCD panels, such as in notebook PCs. Output voltage regulation is based on current-mode control, which eases the design of loop compensation while providing inherent input voltage feed-forward. The PWM controller is designed for high speed capability including an oscillator frequency range up to 2 MHz and total propagation delays less than 100 ns. Additional features include an error amplifier, precision reference, line under-voltage lockout, cycle-by-cycle current limit, slope compensation, soft-start, external synchronization capability and thermal shutdown.
