Shenzhen Meiyuxin Technology Co., Ltd. [TI agent] strongly sells TPS92691QPWPTQ1 automotive multi-topology LED driver with rail-to-rail current sense amplifier! !

Product Description:

The TPS92691QPWPTQ1 is a general-purpose LED controller that supports a range of boost or buck driver topologies. The device implements a fixed-frequency peak-current-mode control technique with programmable switching frequency, slope compensation, and soft-start timing. It incorporates a high voltage (65V) rail-to-rail current sense amplifier, allowing direct measurement of LED current using a high-side or low-side series sense resistor. The amplifier can be used to achieve low input offset voltage with better than ±3% LED current accuracy over the 25°C to 140°C junction temperature range and 0 to 60V output common-mode voltage range.

The TPS92691QPWPTQ1 can individually modulate the LED current using analog or PWM dimming techniques. A linear analog dimming response with a 15:1 range is obtained by varying the voltage from 140mV to 2.25V over the high impedance analog adjust input (IADJ) range. PWM dimming of the LED current is achieved by modulating the PWM input pin to the desired duty cycle and frequency. Contrast ratios greater than 1000:1 can be achieved with series FET dimming using the optional DDRV gate driver output.

The TPS92691QPWPTQ1 supports continuous checking of LED status through a current monitor output. This enables short or open LED detection and protection. Additional fault protection features include VCC UVLO, output overvoltage protection (OVP), switch cycle-by-cycle current limit, and thermal protection.

Characteristic

• Wide Input Voltage Range: 4.5V to 65V

• Wide Output Voltage Range: 2V to 65V

• Low Input Offset Rail-to-Rail Current Sense Amplifier

– Better than ±3% Light-Emitting Diode (LED) Current Accuracy Over 25°C to 140°C Junction Temperature Range

– Compatible with high-side and low-side current sensing elements

• High impedance analog LED current regulation input (IADJ) with better than 15:1 contrast ratio

• Over 1000:1 Series FET Pulse Width Modulation (PWM) Dimming Ratio Using Integrated Series N-Channel Dimming Driver Interface

• Has LED current continuous monitoring output for system fault detection and diagnostics

• Programmable switching frequency for synchronization to external clock

• Programmable Soft-Start and Slope Compensation

• Comprehensive fault protection circuitry including supply voltage (VCC) undervoltage lockout (UVLO), output overvoltage protection (OVP), cycle-by-cycle switch current limit and thermal protection

• TPS92691-Q1: Automotive Q100 Grade 1 Compliant

Application

• TPS92691-Q1: Automotive Exterior Lighting Applications

• Architectural lighting and general lighting applications