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XC9220A093MR 参数 Datasheet PDF下载

XC9220A093MR图片预览
型号: XC9220A093MR
PDF下载: 下载PDF文件 查看货源
内容描述: 16V输入电压,降压型DC / DC控制器IC 。 [16V Input Voltage, Step-Down DC/DC Controller ICs.]
分类和应用: 控制器
文件页数/大小: 22 页 / 517 K
品牌: TOREX [ TOREX SEMICONDUCTOR ]
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XC9220/XC9221
Series
16V Input Voltage, Step-Down DC/DC Controller ICs.
ETR0511_007
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.
■GENERAL
DESCRIPTION
■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)
: Integral protection (1.0 ms)
(XC9220/XC9221 Aand B series)
Short-circuit protection
Low ESR
Capacitor Compatible
Packages
: Ceramic capacitor
: SOT-25
USP-6C
Protection Circuits
■TYPICAL
APPLICATION CIRCUIT
■TYPICAL
PERFORMANCE
CHARACTERISTICS
V
IN
●Efficiency
vs. Output Current
C
IN
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
100
CE
1
2
3
SBD
Efficiency
 EFFI
(%)
* RSENSE : Tantalum and electrolytic capacitors can be used, in w hich case,
RSENSE becomes unnecessary.
CE
GND
FB
V
IN
EXT
Pch
MOSFET
L
RS ENS E
( f or ceramic CL )
V
OUT
5
4
90
80
70
60
50
40
30
20
10
0
0.1
VIN=5.0V
C
FB
R
FB1
CL
R
FB2
VIN=16.0V
VIN=12.0V
1
10
100
1000
10000
Output Current IOUT (mA)
1/22