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PDF IA3220 Datasheet ( Hoja de datos )

Número de pieza IA3220
Descripción 1.3A Synchronous Step-Down Converter
Fabricantes TGW 
Logotipo TGW Logotipo
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IA3220 datasheet

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IA3220 pdf
FUNCTIONAL BLOCK DIAGRAM
IA3220
Figure 2. IA32200 Block Diagram
FUNCTIONAL DESCRIPTION
IA3220 L is a synchronous buck regulator IC that
integrates the PWM/PFM control, high-side and
low-side MOSFETs on the same die to minimize the
switching transition loss and conduction loss. With
ultra low RDS(ON) power switches and proprietary
PWM control, this regulator IC can achieve the
highest efficiency and the highest switch frequency
simultaneously to minimize the external inductor and
capacitor size, and thus achieving the minimum
solution footprint.
The IA3220 L requires only three external power
components (Cin, Cout and L). The adjustable
version can be programmed with external feedback
to any voltage, ranging from 0.6V to the input
voltage.
At dropout operation, the converter duty cycle
increases to 100% and the output voltage tracks
the input voltage minus the Rdson drop of the
high-side MOSFET.
The internal error amplifier and compensation
provides excellent transient response, load, and line
regulation. Soft start function prevents input inrush
current and output overshoot during start up.
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