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XC9220A095EL Datasheet(PDF) 1 Page - Torex Semiconductor

Part # XC9220A095EL
Description  16V Input Voltage, Step-Down DC/DC Controller ICs.
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Manufacturer  TOREX [Torex Semiconductor]
Direct Link  http://www.torex.co.jp
Logo TOREX - Torex Semiconductor

XC9220A095EL Datasheet(HTML) 1 Page - Torex Semiconductor

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XC9220/XC9221 Series
16V Input Voltage, Step-Down DC/DC Controller ICs.
■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. The XC9220 series is PWM control, and the XC9221 series is PWM/PFM mode, which automatically
switches from PWM to PFM during light loads and high efficiencies can be achieved over a wide range of load conditions.
As for the soft-start time, the XC9220/XC9221A and C series is internally set to 4msec and the XC9220/XC9221B and D
series can be externally set-up. With the built-in U.V.L.O. (Under Voltage Lock Out) function, the internal P-channel driver
transistor is forced OFF when input voltage becomes 2.3V or lower.
■TYPICAL APPLICATION CIRCUIT
■APPLICATIONS
●Set top boxes
●Digital TVs
●DVD/HDD recorders
●Portable information terminals
●Notebook computers
■FEATURES
Operating Voltage Range
: 2.8V ~ 16.0V
Output Voltage Range
: 1.2V or more
Output Voltage Externally Set
: 0.9V (accuracy +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)
Externally set (XC9220/XC9221B)
Protection Circuits
: Integral protection (1.0 ms)
(XC9220/XC9221 Aand B series)
Short-circuit protection
Low ESR
Capacitor Compatible
: Ceramic capacitor
Packages
: SOT-25
USP-6C
■TYPICAL PERFORMANCE
CHARACTERISTICS
●Efficiency vs. Output Current
CIN
VIN
CL
RFB1
RFB2
CFB
L
SBD
Pch
MOSFET
VOUT
CE
RSENSE
( for ceramic CL )
* RSENSE : Tantalum and electrolytic capacitors can be used, in w hich case,
RSENSE becomes unnecessary.
0
10
20
30
40
50
60
70
80
90
100
0.1
1
10
100
1000
10000
Output Current IOUT (mA)
VIN=5.0V
VIN=12.0V
VIN=16.0V
XC9221A095MR (VOUT=3.3V, FOSC=500kHz)
CIN=47μF (OS-Con), CL=47μF (OS-Con),
L=10μH (CDRH8D43, SUMIDA)
PchMOSFET: CPH3308 (SANYO), CDD=1.0μF (ceramic), RIN=10Ω
ETR0511_007


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