XC6222
Series
Reverse Current Protection, 700mA High Speed LDO Regulator
ETR0344-003
■GENERAL
DESCRIPTION
The XC6222 series is a highly accurate, low noise, high ripple rejection, low dropout, and low power consumption high speed
CMOS voltage regulator. The series consists of a voltage reference, an error amplifier, a driver transistor, a current limiter, a
thermal protection circuit, a reverse current protection circuit and a phase compensation circuit.
The CE function enables the entire circuit to be placed in a stand-by state by inputting a low level signal to the CE pin. In this
stand-by mode, the electric charge at the output capacitor (C
L
) will be discharged by the internal auto-discharge switch, and as
a result the V
OUT
pin will quickly return to the V
SS
level.
Over-current protection and thermal protection circuits are integrated. The protection circuit starts to operate when either output
current reaches the current limit level or junction temperature reaches the temperature limit. With the reverse current
protection function, the reverse current flow is prohibited when V
OUT
voltage is higher than V
IN
voltage. The device is optimized
for use in backup power circuits.
■APPLICATIONS
●
●
●
●
●
●
USB Products
CD/DVD/HDD drives
Mobile phones
Portable game consoles
Camera modules
Electronic dictionaries
■FEATURES
Dropout Voltage
Operating Voltage Range
Output Voltages
Accuracy
Low Power Consumption
Stand-by Current
High Ripple Rejection
Operating Temperature
Low ESR Capacitor
Environmentally Friendly
Packages
: 120mV @I
OUT
=300mA(V
OUT
=3.0V)
: 1.7V ~ 6.0V
: 0.8V~5.0V (0.05V increments)
: +1% (V
OUT
＞2.0V)
+0.02V (V
OUT
≦2.0V)
: 100μA (V
OUT
=3.0V)
: Less than 0.1μA
: 65dB @ 1kHz
: -40℃~+85℃
: Ceramic capacitor
: EU RoHS Compliant, Pb Free
: USP-6C, SOT-25, SOT-89-5
■TYPICAL
APPLICATION CIRCUIT
■TYPICAL
PERFORMANCE
CHARACTERISTICS
●
Load Transient Response
●負荷過渡応答特性例
XC6222x151
tr=tf=5μs,V
IN
=2.5V, Ta=25℃
V
OUT
=10→300mA, C
IN
=1.0μF(ceramic), C
L
=6.8μF(ceramic)
1.6
Output Voltage：V
OUT
(V)
1000
Output Voltage
1.5
1.4
1.3
1.2
1.1
800
600
Output Current
400
200
0
Time：100μs/div
*C
L
：
2.2μF or higher (V
OUT
=2.5�½�5.0V)
4.7μF or higher (V
OUT
=2.1�½�2.45V)
6.8μF or higher (V
OUT
=0.8�½�2.05V)
Output Current：I
OUT
(mA)
1/26
TOREX [ TOREX SEMICONDUCTOR ]
