參數(shù)資料
型號(hào)： XC6213B59AN
廠商： TOREX SEMICONDUCTOR LTD.
英文描述： High Speed LDO Regulators, Low ESR Cap.Comratible, Ultra Small Package
中文描述： 高速LDO穩(wěn)壓器，低ESR Cap.Comratible，超小型封裝
文件頁(yè)數(shù)： 10/27頁(yè)
文件大小： 1774K
代理商： XC6213B59AN
XC6213
Series
10/27
SETTING VOLTAGE
CL
1.2 ~ 1.75V
More than 3.3
μ
F
1.8 ~ 5.0V
More than 1.0
μ
F
■
OPERATIONAL EXPLANATION
■
NOTES ON USE
<Output Voltage Regulator Control>
The voltage, divided by resistors R1 & R2, which are connected
to the V
OUT
pin is compared with the internal reference voltage
by the error amplifier. The P-channel MOSFET, which is
connected to the V
OUT
pin, is then driven by the subsequent
output signal. The output voltage at the V
OUT
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.
<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 (C
L
) with a capacitance, based on the chart below. The equivalent serial resistor (ESR) of the
output capacitor (C
L
) should be within the range as the graph below shown. We also suggest an input capacitor (C
IN
) of
1.0
μ
F: this should be connected between V
IN
and V
SS
in order to stabilize input power source.
Output Capacitor Corresponding Chart
<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 V
OUT
pin will be pulled down to the V
SS
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 V
IN
voltage or a V
SS
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 V
IN
or V
SS
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.
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.
V
SS
V
OUT
V
IN
ON/OFF
Control
Voltage
Reference
each circuit
CE
R2
R1
-
+
Current
Limiter
0.01
0.1
1
10
100
0.01
0.1
1
10
100
E
Ta=-40
o
C～85
o
C
VIN=2.0～6.0V , VOUT=1.2～5.0V,CIN=1.0uF (ceramic)
STABLE REGION
Output Current : IOUT (mA)
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