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TPS92692QPWPRQ1 Description
The TPS92692 and TPS92692-Q1 are peak current model-based controllers that allow step-up/down LED driver topologies with great precision. The TPS92692QPWPRQ1 has a rail-to-rail current amplifier for measuring LED current as well as a spread spectrum frequency modulation approach for better EMI performance.
This high-performance LED controller can dim LED current utilizing analog or PWM dimming techniques independently. Varying the voltage across the high impedance analog adjust (IADJ) input produces a linear analog dimming response with a range of over 15:1. PWM dimming of LED current can be accomplished by either directly modulating the DIM/PWM input pin with the required duty cycle or by turning on the internal PWM generator circuit. By comparing the DC voltage at the DIM/PWM pin to the internal triangle wave generator, the PWM generator converts it to the corresponding duty cycle. An external P-Channel series MOSFET can be driven using the optional PDRV gate driver output.
TPS92692QPWPRQ1 Features
Wide Input Voltage: 4.5 V to 65 V
Better than ± 4% LED Current Accuracy over –40°C to 150°C Junction Temperature Range
Spread Spectrum Frequency Modulation for Improved EMI
Comprehensive Fault Protection Circuitry with Current Monitor output and Open Drain Fault Flag Indicator
Internal Analog Voltage to PWM Duty Cycle Generator for stand-alone Dimming Operation
Compatible with Direct PWM Input with over 1000:1 Dimming Range
Analog LED Current Adjust Input (IADJ) with over 15:1 Contrast Ratio
Integrated P-Channel Driver to enable Series FET Dimming and LED Protection
TPS92692QPWPRQ1 Applications
TPS92692-Q1: Automotive Exterior Lighting Applications
Driver Monitoring Systems (DMS)
LED General Lighting Applications
Exit Signs and Emergency Lighting
