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.
XC9221 Datasheet
