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XC9221 - Step-Down DC/DC Controller

This page provides the datasheet information for the XC9221, a member of the XC9220 Step-Down DC/DC Controller family.

Description

The XC9220/XC9221 series is a group of multi-purpose step-down DC/DC controller ICs.

The ICs enable a high efficiency, stable power supply with an output current up to 3A to be configured using only a transistor, a coil, a diode, and two capacitors connected externally.

Features

  • Operating Voltage Range : 2.8V ~ 16.0V Output Voltage Externally Set Range : 1.2V or more (VFB=0.9V+1.5%) Output Current : Less than 3.0A Oscillation Frequency : 300kHz, 500kHz, and 1.0MHz Control Methods : PWM control (XC9220) PWM/PFM automatic switching (XC9221) Soft-Start Function : 4ms, internally set (XC9220/XC9221A, 500kHz) Protection Circuits Externally set (XC9220/XC9221B) : Integral protection (1.0 ms) (XC9220/XC9221 Aand B series) Short-circuit protection Low ESR Capac.

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Datasheet preview – XC9221

Datasheet Details

Part number XC9221
Manufacturer Torex Semiconductor
File Size 402.43 KB
Description Step-Down DC/DC Controller
Datasheet download datasheet XC9221 Datasheet
Additional preview pages of the XC9221 datasheet.

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Full PDF Text Transcription

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XC9220/XC9221 Series 16V Input Voltage, Step-Down DC/DC Controller ICs. ETR0511-012 ˙GENERAL DESCRIPTION The XC9220/XC9221 series is a group of multi-purpose step-down DC/DC controller ICs. The ICs enable a high efficiency, stable power supply with an output current up to 3A to be configured using only a transistor, a coil, a diode, and two capacitors connected externally. Low ESR capacitors such as a ceramic capacitor can be used as an output capacitor. The XC9220/XC9221 series has a 0.9V (±1.5%) reference voltage, and using externally connected resistors, the output voltage can be set freely. With an internal switching frequency of 300kHz and 500kHz 1.0MHz, small external components can also be used.
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