IC-DC IC-Haus, IC-DC Datasheet - Page 2

• Manufacturer Part Number: IC-DC
• Description: 2-CHANNEL BUCK/BOOST DC/DC CONVERTER
• Manufacturer: IC-Haus

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iC-DC
2-CHANNEL BUCK/BOOST DC/DC CONVERTER
DESCRIPTION
iC-DC is a monolithic switching converter with two
back-end linear regulators. The output voltages of
the two linear regulators can be individually pin-
configured within a range of 1.5 to 5.5 V. The switch-
ing converter supplies up to 300 mA which can be
drawn from the two linear regulators in the ratio re-
quired.
The intermediate voltages of the two on-chip linear
regulators are adjusted to minimize their drop-out
voltages. These are approximately 400 mV above the
set linear regulator output voltages.
The high efficiency of the buck/boost converter for
an input voltage range of +4 V to +36 V makes iC-DC
suitable for industrial applications. Using very few ex-
ternal components, a DC/DC power pack can be cre-
ated with a stabilized supply voltage and minimum
power dissipation.
iC-DC is ideal for sensor applications thanks to its
minimal power loss, few components, and stabilized
supply. Switching transistors, flyback diodes, and an
oscillator are integrated in the device so that the only
external elements needed are an inductor, the back-
up capacitors, and a reference resistor.
The back-end linear regulators have a very low resid-
ual ripple with comparatively small filter capacitors in
the single-digit µF range.
By using two independent regulators voltages can be
decoupled from sensitive analog circuits and driver
devices, for example.
The chip temperature, input voltage, and integrated
reverse polarity protection are monitored and errors
signaled by current-limited open-collector outputs.
With overtemperature the switching converter is dis-
abled to reduce the chip’s power dissipation.
The linear regulator output voltages are monitored
and once having reached the steady state they are
also switched to outputs POE1 and POE2. The out-
put voltages of the two linear regulators VCC1 and
VCC2 can be switched on and off by two separate
inputs.
The device’s standby function can be activated to
minimize the current consumption.
Rev A3, Page 2/19
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