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MIC2619

MICREL
Part Number MIC2619
Manufacturer MICREL
Description 1.2MHz PWM Boost Converter with OVP
Published Aug 14, 2010
Detailed Description MIC2619 www.DataSheet4U.com 1.2MHz PWM Boost Converter with OVP General Description The MIC2619 is a 1.2MHz pulse wid...
Datasheet PDF File MIC2619 PDF File

MIC2619
MIC2619

Overview
MIC2619 www.
DataSheet4U.
com 1.
2MHz PWM Boost Converter with OVP General Description The MIC2619 is a 1.
2MHz 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 350mA, the MIC2619 can easily supply most high voltage bias applications, such as TV tuners.
The MIC2619 implements a constant frequency 1.
2MHz 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 6pin package.
The MIC2619 has a junction temperature range of –40°C to +125°C.
All support documentation can be found on Micrel’s web site at: www.
micrel.
com.
Features • • • • • • • • • • • • 2.
8V to 6.
5V Input Voltage 350mA Switch Current Output Voltage up to 35V 1.
2MHz PWM Operation 1.
265V Feedback Voltage Programmable Over-Voltage Protection (OVP) <1% Line Regulation <1µA Shutdown Current Over-Temperature Protection Under-Voltage 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 _________________________________________________________________________________________________________________________ Typical Application 1.
2MHz Boost Converter with OVP in Thin SOT-23-6 Micrel Inc.
• 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.
micrel.
com Ma...


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