XC6210 TOREX [Torex Semiconductor], XC6210 Datasheet - Page 10

• Manufacturer Part Number: XC6210
• Description: High Current, High Speed LDO Regulators
• Manufacturer: TOREX [Torex Semiconductor]

XC6210
10
■OPERATIONAL EXPLANATION
■NOTES ON USE
1. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be
2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on
3. Please wire the input capacitor (C
<Output Voltage Regulator Control>
<Low ESR Capacitor>
<Current Limiter, Short-Circuit Protection>
<CE Pin>
exceeded.
output current. Please strengthen V
input fluctuation or load fluctuation occur, please increase the capacitor value such as C
operation.
With the XC6210 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.
compensation, we suggest that an output capacitor (C
pin (V
We also suggest an input capacitor (C
stabilize input power source.
The XC6210 series regulator offers a combination of current limit and circuit protection by means of a built-in fixed
current limiter circuit and a 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.
The IC's internal regulator circuitry can be shut down via the signal from the CE pin with the XC6210 series. In
shutdown mode, output at the V
for the CE pin logic (See the product classification). Note that as the XC6210B types are 'High Active / No
Pull-Down', operations will become unstable with the CE pin open. Although the CE pin is equal to an inverter
input with CMOS hysteresis, with either the pull-up or pull-down options, the CE pin input current will increase
when the IC is in operation. We suggest that you use this IC with either a V
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
V
The voltage, divided by resistors R1 & R2, which are connected to the V
reference voltage by the error amplifier. The P-channel MOSFET, which is connected to the V
driven by the subsequent output signal. The output voltage at the V
feedback. The constant current limit circuit and short circuit protection operate in relation to the level of output
current.
Output Capacitor Corresponding Chart
SS
is applied.
V
OUT
C
OUT
L
) and the V
Series
More Than 6.8µF
0.8V ~ 1.45V
SS
pin. Please use an output capacitor (C
OUT
IN
) and the output capacitor (C
pin will be pulled down to the V
IN
More Than 4.7µF
and V
IN
1.5V ~ 1.75V
) of 1µF: this should be connected between V
SS
wiring in particular.
L
) be connected as close as possible, between the output
In order to ensure the effectiveness of the phase
More Than 1.0µF
1.8V ~ 5.0V
L
L
) with a capacitance, based on the chart below.
) as close to the IC as possible. Should rapid
OUT
SS
level via R1 & R2. Options are available
pin is controlled & stabilized by negative
OUT
IN
voltage or a V
pin is compared with the internal
IN
IN
SS
or C
and V
voltage input at the
L
OUT
to stabilize the
SS
pin, is then
in order to
Data Sheet
ud200408
IN
or