Texas Instruments LM3492HC
The LM3492HC/-Q1 device integrates a boost converter and a two-channel current regulator to implement a highly efficient and cost effective LED driver. This device drives two individually dimmable LED strings with a maximum power of 15 W and an output voltage of up to 65 V. The boost converter employs a proprietary projected-on-time control method to give a fast transient response with no compensation required.| Part No. | LM3492HC |
|---|---|
| Datasheet | LM3492HC Download |
| Manufacturer |  Texas Instruments |
| Description | LED Driver |
| Buy | Stock & Price |
FEATURES
●1 Boost Converter – Automotive Grade Product, Q100 Grade-1 Qualified – Very Wide Input Voltage Range: 4.5 V to 65 V – Programmable Soft-Start Period – No Loop Compensation Required – Stable with Ceramic and Other Low ESR Capacitors with No Audible Noise – Nearly Constant Switching Frequency Programmable from 200 kHz to 1 MHz● Current Regulator – Programmable LED Current: 50 mA to 250 mA – 10000:1 Contrast Ratio, 300-ns Minimum Pulse Width – Two Individual Dimmable LED Strings up to 65 V, Total 15 W (Typically 28 LEDs at 150 mA) – Dynamic Headroom Control Maximizes Efficiency – Over-Power Protection – ±3% Current Accuracy
● Supervisory Functions – Precision Enable – COMM I/O Pin for Diagnostic and Commands – Thermal Shutdown Protection – Thermally Enhanced PWP, 20-Pin Package 2
APPLICATIONS
● Ultra-High Contrast Ratio 6.5” to 10” LCD Display Backlight up to 28 LEDs● Automotive or Marine GPS Display 3
DESCRIPTION
The nearly constant switching frequency can be set to a level from 200 kHz to 1 MHz.
