LD7301

Preliminary – LD7301 High Voltage Linear Regulator for SMPS PWM controller Features　  Wide working voltage range : 15V to 450V  Output current up to 3.0mA continuous supply, 30mA peak value  Supply current : 250µA (typically)  Line regulation : 0.1mV/V (typically)  Output Voltage: 5V, 9V, 12V Applications  Off-line SMPS PWM controller startup circuit General Description The LD7301 is a low cost linear regulator producing topquality power supply for high input voltage. Its features include a 3-terminal fixed output voltage version in TO-92 and SOT-89 packages. Other than the functions like ordinary low voltage regulators, the LD7301 provides the use of much higher input voltages (up to 450V). It eliminates the need for large power resistors when used in a SMPS startup circuit. In this application, current is drawn from the high voltage line only during start-up. There is only current flow leakage after start-up, thereby reducing the continuous power dissipation from milliwatts to watts. Equivalent Block Diagram Ordering Information Packing Options Part No. Package Voltage Bag(BG) 5V LD73015L5-BG SOT-89-3 9V LD73019L5-BG LD7301 12V LD730112L5-BG 5V LD73015T1-BG TO-92-3 9V LD73019T1-BG 12V LD730112T1-BG  Package material default is “Green” package. Package Pin out Product Marking LD8888 SSSSS… ●  Line 1 – “LD” is a fixed character 8888: product name  Line 2 – SSSSS…: lot number Lighting Device Technologies Corporation Tel: +886-3-567-8806 Fax: +88...