TS19503CB10H RBG Taiwan Semiconductor

TS19503CB10H Taiwan Semiconductor 2A, Step-Down LED Driver with Integrated N-channel FET High-Side Current Sense, PWM and Analog Dimming Capability DESCRIPTION FEATURES AEC-Q100 qualified with the following results: The TS19503 is a continuous conduction mode - Device temperature grade 1: -40C to 125C inductive step-down converter, designed for driving - Device HBM ESD classification level H1C single or multiple LEDs. It operates from an input supply - Device CDM ESD classification level C6 between 4.5V and 75V. It provides a high accuracy Input voltage range 4.5V to 75V output current externally adjustable up to 2A. Hysteretic Control: No Compensation Depending upon the supply voltage and external Internal N MOSFET with 200m Low RDS(ON) components, the TS19503 can provide more than 25 2A Output Current watts of output power. Up to 97% Efficiency The TS19503 includes the power switch and a high-side Typical 2% LED Current Accuracy output current sensing circuit, which uses an external DIM Pin for Analog Dimming and PWM Dimming resistor to set the nominal average output. A dedicated 1000:1 Dimming DIM input accepts a wide range of inputs. Applying a Single pin on/off and brightness control using PWM voltage of 0.1V or lower to the DIM pin turns the output Up to 1MHz switching frequency off and switches the device into a low current standby High-Side Current Sense FLT Pin for MCU state. The device also provides a FLT flag when an Over Temperature Protection open load or over temperature condition is detected. Open Load Flag RoHS Compliant APPLICATION Halogen-Free according to IEC 61249-2-21 Automotive exterior lighting applications LED general lighting applications MSOP-10EP Pin Definition: 1.V 6.PGND IN 2.CS 7.PGND 3.V 8.FLT DD 4.DIM 9.LX 5.AGND 10.LX Notes: Moisture sensitivity level: level 3. Per J-STD-020 TYPICAL APPLICATION CIRCUIT VIN 4.5V to 75V VIN CS LX TS19503 VDD GND FLT DIM 1 Version: A2103 TS19503CB10H Taiwan Semiconductor (Note 1) ABSOLUTE MAXIMUM RATINGS (T =25C unless otherwise specified) A PARAMETER SYMBOL LIMIT UNIT VIN 75 V Power Supply Pin CS Voltage to GND VCS -0.3 to VIN-0.1 V V -0.3 to 5.5 V FLT Voltage to GND FLT DIM Voltage to GND VDIM -0.3 to 5.5 V VDD Voltage to GND VDD -0.3 to 5.5 V LX Voltage to GND LX 75 V TLEAD 260 C Lead Temperature (Soldering 10 sec) T -40 to +150 C Junction Temperature Range J TSTG -65 to +150 C Storage Temperature Range (Note 2) ESD Rating (Human Body Model) HBM 1.5 kV ESD Rating (Charged Device Model) CDM 1 kV THERMAL PERFORMANCE PARAMETER SYMBOL TYP UNIT Junction to Case Thermal Resistance RJC 31 C/W Junction to Ambient Thermal Resistance R C/W JA 102 Notes: R is the sum of the junction-to-case and case-to-ambient thermal resistances. The case thermal reference is defined JA at the solder mounting surface of the LX pins. R is guaranteed by design while R is determined by the users board JC CA design. R shown below for single device operation on FR-4 PCB in still air. Thermal Resistance is specified with the JA component mounted on a low effective thermal conductivity test board in free air at T =25C. A (Note 3) RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL LIMIT UNIT Operating Junction Temperature Range T -40 to +150 C J Operating Ambient Temperature Range TOPA -40 to +125 C ELECTRICAL SPECIFICATIONS (V =14V, T =25C unless otherwise noted) IN A PARAMETER CONDITIONS SYMBOL MIN TYP MAX UNIT Supply Voltage Supply Voltage VIN supply range V 5 -- 70 V IN IC turn on voltage Internal regulator start-up threshold VSU 4.4 4.55 4.7 V IC turn off voltage Internal regulator shutdown threshold VSD 3.8 4 4.2 V VDD Voltage Regulator Output Voltage V 4.7 5 5.3 V DD Output switching off Quiescent supply current IQ 0.4 0.65 1 mA SW=200kHz Operation current ISW 0.5 1 1.5 mA Mean current sense threshold voltage (Defines LED current setting accuracy) V -V Internal Voltage reference IN CS VSENSE 96 100 104 mV 2 Version: A2103