HVLED002 STMicroelectronics

HVLED002 High performance current mode LED controller Datasheet - production data Description The HVLED002 control IC provides the necessary SO-8 features to implement off-line or DC to DC fixed frequency current mode control schemes to implement LED drivers. Internally implemented circuits include a trimmed oscillator for the precise Features duty cycle control, undervoltage lockout, a precision reference trimmed for accuracy at the Trimmed oscillator for precise frequency error amplifier input, a PWM comparator which control also provides current limit control and a totem Oscillator frequency guaranteed at 250 kHz pole output stage designed to the source or sink Current mode operation to 500 kHz high peak current. The output stage, suitable for driving N-channel MOSFETs, is low in the off- Latching PWM for cycle-by-cycle current state. limiting Internally trimmed reference with undervoltage Table 1. Device summary lockout Order codes Package Packaging High current totem pole output HVLED002 Tube Undervoltage lockout with hysteresis SO8 Low start-up and operating current HVLED002TR Tape and reel Figure 1. Block diagram December 2015 DocID028720 Rev 1 1/19 This is information on a product in full production. www.st.comContents HVLED002 Contents 1 Absolute maximum ratings . 4 2 Pin connection and functions . 5 3 Thermal data . 5 4 Electrical characteristics . 6 5 Application information . 12 5.1 Supply voltage and undervoltage lockout . 12 5.2 Reference voltage 12 5.3 Oscillator . 12 5.4 Current sense 13 5.5 Error amplifier 14 5.6 Totem pole output . 14 5.7 Typical application 15 6 Package information 16 6.1 SO-8 package information 16 7 Revision history . 18 2/19 DocID028720 Rev 1