LC5200 Datasheet | Allegro MicroSystems

Features and Benefits - Supply voltage, VBB, 450 V maximum, 25 to 400 V remended; Note: lowest voltage can vary depending on LED loads - Output current IO(max) options: ▫ 0.5 A, LC5205D ▫ 1.0 A, LC5210D - Constant current control circuit: ▫ Fixed off-time PWM constant current control, off-time adjustable by external ponents ▫ Externally adjustable output current by input voltage to REF pin - Output current dimming by external PWM signal; low signal to TOFF pin shuts off output current, and PWM signal input to that pin enables dimming - Undervoltage lockout protection (UVLO) - Overcurrent protection (OCP); latched in response to the short-to-GND condition - Thermal Shutdown protection (TSD); protects IC from damage due to excess temperature, auto-restart when temperature drops below threshold Description LC5200 series is an off-line LED driver IC which includes both a main controller integrated circuit (MIC) and a power MOSFET. Its high voltage capability allows direct connection to a wide range of supply voltages ranging from 25 to 400 V (remended). The LC5200 uses constant current mode to drive LEDs. The package is a standard 8-pin DIP, with pin 7 removed for greater creepage distance from the supply pin. Package: 7-pin DIP .. Not to scale Functional Block Diagram VBB MIC Reg Regulator UVLO TSD OUT Toff Ref Current Control Logic OCP Gate Driver Sen LC5200 Series Selection Guide Part Number LC5205D LC5210D LED Drivers Output Current, IO(max) (A) 0.5 1.0 Absolute Maximum Ratings at TA = 25°C Characteristic Supply Voltage Output Breakdown Voltage Output Current REF Pin Input Voltage SENSE Pin Voltage Allowable Power Dissipation Junction Temperature Operating Ambient Temperature Storage Temperature Symbol VBB VO IO VREF VRS PD TJ TA Tstg tw ≥ 1 μs On Sanken evaluation PCB; affected by application PCB layout LC5205D, tw ≥ 1 μs LC5210D, tw ≥ 1 μs Notes Rating 450 450 0.5 1.0 - 0.3 to VREG + 0.3 ±2 1.73 150 - 40 to 105 - 40 to 150 Units V V A A...