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MIC2619 Datasheet(PDF) 1 Page - Microchip Technology |
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MIC2619 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 20 page  2022 Microchip Technology Inc. and its subsidiaries DS20006545A-page 1 MIC2619 Features • 2.8V to 6.5V Input Voltage • 350 mA Switch Current • Output Voltage up to 35V • 1.2 MHz PWM Operation • 1.265V Feedback Voltage • Programmable Overvoltage Protection (OVP) • <1% Line Regulation • <1 µA Shutdown Current • Overtemperature Protection • Undervoltage Lock Out (UVLO) • Low Profile Thin SOT-23-6 Package • –40°C to +125°C Junction Temperature Range Applications • Bias Supply Applications: - Tuner Varactor Bias - High Voltage Bias Supplies - Avalanche Photo Diode - High Voltage Display Bias • DSL/Broadband Applications • Constant Current Power Supplies General Description The MIC2619 is a 1.2 MHz pulse width modulated (PWM) step-up switching regulator that is optimized for low power, high output voltage applications. With a maximum output voltage of 35V and a switch current of over 350 mA, the MIC2619 can easily supply most high voltage bias applications, such as TV tuners. The MIC2619 implements a constant frequency 1.2 MHz PWM current-mode control scheme. The high frequency PWM operation saves board space by reducing external component sizes. The additional benefit of the constant frequency PWM control scheme, as opposed to variable frequency control schemes, is lower output noise and smaller input ripple injected back to the battery source. The MIC2619 has programmable overvoltage protection to ensure output protection in case of fault condition. The MIC2619 is available in a low profile Thin SOT-23 6-lead package. The MIC2619 has a junction temperature range of –40°C to +125°C. Package Type FB GND EN VIN SW 3 1 6 2 45 OVP MIC2619 6-Lead Thin SOT-23 (D6) (Top View) 1.2 MHz PWM Boost Converter with OVP |
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