XC6223 TOREX [Torex Semiconductor], XC6223 Datasheet - Page 9

• Manufacturer Part Number: XC6223
• Description: Built-in Inrush Current Protection, 300mA High Speed LDO Voltage Regulator
• Manufacturer: TOREX [Torex Semiconductor]

■ OPERATIONAL EXPLANATION
<Low ESR Capacitor>
<Current Limiter, Short-Circuit Protection>
<CE Pin>
enables the electric charge at the output capacitor (C
result the V
the XC6223A/B/E/F series because of a high active and no pull-down. On the other hand, the XC6223C/D/G/H series has a
pull-down resistor at the CE pin inside, so that the CE pin input current flows.
<Thermal Shutdown>
<Inrush Current Protection>
The inrush current protection circuit is built in the XC6223 series.
When the IC starts to operate, the protection circuit limits the inrush current from V
function is built in the XC6223E/F/G/H series.
The XC6223 series needs an output capacitor C
compensation, please place an output capacitor of 1.0μF or bigger at the V
a stable power input, please connect an input capacitor (C
The IC's internal circuitry can be shutdown via the signal from the CE pin. In shutdown mode, the XC6223B/D/F/H series
The over heat protection circuit is built-in with the XC6223 series. When the junction temperature of the IC reaches the
temperature limit level (150℃ TYP.), the thermal shutdown circuit operates and the driver transistor will be turned off.
The IC resumes its operation when the thermal shutdown function is released as a result of the junction temperature drops
to the release point.
The protection circuit operates as a combination of an output current limiter and fold-back short circuit protection. When
load current reaches the current limit level, the output voltage drops. As a result, the load current starts to reduce with
showing fold-back curve. The output current finally falls at the level of 50mA when the output pin is short-circuited.
OUT
pin quickly returns to the V
SS
level. When the CE pin is open, the output voltage becomes undefined state in
L
L
) to be discharged via the internal auto-discharge switch, and as a
The voltage divided by resistors R1 & R2 is compared with the
internal reference voltage by the error amplifier. The
MOSFET which is connected to the V
subsequent output signal. The output voltage at the V
controlled and stabilized by a system of negative feedback. The
current limit circuit and short circuit protection operate in relation to
the level of output current and heat dissipation. Further, the IC’s
internal circuitry can be shutdown via the CE pin signal.
for phase compensation.
IN
) of 1.0μF between the V
OUT
pin and V
IN
In order to ensure the stable phase
to V
IN
pin and the V
OUT
SS
pin as close as possible. For
to charge C
OUT
pin is then driven by the
SS
L
pin.
capacitor. This
XC6223
OUT
P-channel
Series
9/36
pin is