LM3492QMH/NOPB

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PMIC - LED drivers are components used to control the incoming power to light-emitting diode (LED) products. These drivers offer the necessary electrical protection and specification control that is needed to ensure that the LEDs are not overdriven or thermo-statically damaged. The LM3492QMH/NOPB is an integrated device containing a 6-channel constant current sink designed to drive high power LEDs directly from a DC input. The driver is intended primarily to supply current to large arrays of LEDs.

The LM3492QMH/NOPB has two input voltage options, the P version and the N version. The P version is the higher power option and can drive up to 6 channels of LEDs, each up to 700 mA with a supply of 5-36 volts. The N version can drive up to 8 channels of LEDs at 350 mA, with a supply of 5-18V. The voltage and current requirements for each channel are programmable via external resistors. The LM3492QMH/NOPB also provides a wide range of protection features including temperature monitoring, over temperature, over current, and short circuit protection. The device is capable of operating at temperatures of -40 to 125 degrees Celsius.

The LM3492QMH/NOPB is an ideal device for LED applications requiring high efficiency, linear LED current regulation, and wide input voltage range. The device is designed to simplify LED driver design and system integration. Applications include linear LED lighting, car headlights, parking lot lights, street lights, backlighting, emergency lighting, and general lighting.

The LM3492QMH/NOPB works by driving external MOSFETs via 4 gates which are driven from a single low-power pulse-width modulation (PWM) signal. The PWM signal is divided into multiple parts, and each of these parts controls the corresponding MOSFET, allowing the device to provide a high level of linear current regulation, improved efficiency, and reduced system cost.

The device also features a 1.2 MHz switching frequency and a minimum ON time of 40ns, allowing it to provide high-frequency operation with continuous current and a low electromagnetic interference (EMI) profile. The selectable internal compensation scheme provides excellent transient response and a wide operating bandwidth.

The device is provided in a standard 8-lead SOIC package and is suitable for surface-mounting on a printed circuit board (PCB). The LM3492QMH/NOPB is a highly integrated LED driver device that combines all the necessary features for LED lighting applications, allowing for simplified design, improved performance, and reduced system cost.

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