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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.
LD7301 Datasheet
