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XC6213B402NR 参数 Datasheet PDF下载

XC6213B402NR图片预览
型号: XC6213B402NR
PDF下载: 下载PDF文件 查看货源
内容描述: 高速LDO稳压器,低ESR帽。兼容,超小型封装 [High Speed LDO Regulators, Low ESR Cap. Compatible, Ultra Small Package]
分类和应用: 稳压器
文件页数/大小: 28 页 / 1015 K
品牌: TOREX [ Torex Semiconductor ]
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XC6213 Series  
OPERATIONAL EXPLANATION  
<Output Voltage Regulator Control>  
IN  
V
ON/OFF  
Control  
The voltage, divided by resistors R1 & R2, which are connected  
to the VOUT pin is compared with the internal reference voltage  
by the error amplifier. The P-channel MOSFET which is  
connected to the VOUT pin is then driven by the subsequent  
output signal. The output voltage at the VOUT pin is controlled &  
stabilized by negative feedback. The current limit circuit and  
short circuit protection operate in relation to the level of output  
current. Further, the voltage regulator's internal circuitry can be  
shutdown via the CE pin's signal.  
each circuit  
CE  
-
Current  
Limiter  
+
VOUT  
R2  
R1  
Voltage  
SS  
V
Reference  
<Low ESR Capacitor>  
With the XC6213 series regulator, a stable output voltage is achievable even if low ESR capacitors are used, as a phase  
compensation circuit is built-in to the regulator. In order to ensure the effectiveness of the phase compensation, please  
connect an output capacitor (CL) with a capacitance, based on the chart below. The equivalent serial resistor (ESR) of the  
output capacitor (CL) should be within the range as the graph below shown. We also suggest an input capacitor (CIN) of  
1.0μF: this should be connected between VIN and VSS in order to stabilize input power source.  
Output Capacitor Corresponding Chart  
SETTING VOLTAGE  
CL  
1.2 ~ 1.75V  
1.8 ~ 5.0V  
More than 3.3μF  
More than 1.0μF  
Ta=-40~85℃  
VIN=2.0~6.0V, VOUT=1.2~5.0V, CIN=1.0μF(ceramic)  
100  
10  
STABLE REGION  
1
0.1  
0.01  
0.01  
0.1  
1
10  
100  
Output Current : IOUT (mA)  
<Short-Circuit Protection>  
The XC6213 series regulator offers circuit protection by means of a built-in foldback circuit. When the load current reaches  
the current limit level, the fixed current limiter circuit operates and output voltage drops. As a result of this drop in output  
voltage, the foldback circuit operates, the output voltage drops further and output current decreases. When the output pin  
is shorted, a current of about 50mA flows.  
<CE Pin>  
The IC's internal regulator circuitry can be shut down via the signal from the CE pin with the XC6213 series. In shutdown  
mode, output at the VOUT pin will be pulled down to the VSS level. Note that as the XC6213B types are 'High Active / No  
Pull-Down', operations will become unstable with the CE pin open. We suggest that you use this IC with either a VIN  
voltage or a VSS voltage input at the CE pin. If this IC is used with the correct specifications for the CE pin, the IC will  
operate normally. However, supply current may increase as a result of through current in the IC's internal circuitry if a  
voltage other than VIN or VSS is applied.  
<Minimum Operating Voltage>  
Please apply input voltage more than 2.0V or more in order to stabilize the operation of the IC’s. Normal output voltage  
may not be obtained when the input voltage is lower than 2.0V.  
NOTES ON USE  
1. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be  
exceeded.  
2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output  
current. Please strengthen VIN and VSS wiring in particular.  
3. Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible. Should rapid input  
fluctuation or load fluctuation occur, please increase the capacitor value such as CIN or CL to stabilize the operation.  
4. Make sure not to use the IC with large current at high temperature. When exceeding power dissipation of a package,  
heat occurs before short protection operates, and the IC may break.  
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