Datasheet Microchip MIC2619 — Datenblatt

MIC2619
1.2MHz PWM Boost Converter
with OVP General Description Features 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. 2.8V to 6.5V Input Voltage
350mA Switch Current
Output Voltage up to 35V …