XC6503 Series
ETR0346-007
CL Capacitor-Less 500mA Low Power Consumption High Speed LDO Regulator
■GENERAL DESCRIPTION
The XC6503 series is a 500mA high speed CMOS LDO regulator that can provide stable output voltages even without a load
capacitor CL. The devices are available in fixed output voltage from 1.2V to 5.0V in 0.05V increments
The CL capacitor-less is possible because phase compensation is carried out internally unlike other LDOs where it is done
externally. It results in saving board design space. The current limit fold-back circuit and thermal shutdown circuit work as
protection circuit. The XC6503P is a 3-Terminal regulator and the XC6503D has a chip enable function, which enables the
entire circuit to be turned off by a low level input signal to the CE pin.
When a CL capacitor is used, the IC can discharge the electric charge stored at the output capacitor through the internal switch
while in standby state, and as a result the VOUT quickly returns to the VSS level.
■APPLICATIONS
■FEATURES
●Mobile phones
●Portable game consoles
●Digital still camera modules
●Wireless LAN modules
●Liquid crystal display modules
●Bluetooth modules
●Digital TV tuner modules
Maximum Output Current
:
500mA
Input Voltage Range
:
1.7V ～ 6.0V
Output Voltage Range
:
1.2V ～ 5.0V (0.05V increments)
Output Accuracy
:
±1.0% (2.0V～5.0V)
±20mV (1.2V～1.95V)
Temperature Stability
:
±30ppm/℃
Dropout Voltage
:
190mV＠VOUT=2.8V, IOUT =300mA
Low Power Consumption
:
15μA (TYP.), 0.1μA (in standby)
High PSRR
:
55dB＠1kHz, VOUT=2.8V
Protection Current
:
Current Limiter （630mA TYP.）
Short-circuit Protection
Thermal Shutdown
CL Capacitor-Less
:
Internal Phase Compensation
Operating Ambient Temperature
:
-40℃～+85℃
Packages
:
USP-4, SOT-25, SOT-89-5 (XC6503D)
SOT-89 (XC6503P)
Environmentally Friendly
EU RoHS Compliant, Pb Free
■TYPICAL PERFORMANCE
CHARACTERISTICS
X C6 5 0 3 x2 8 1 xx
250
VIN=3.8V, tr=tf=5μs, IO UT=10⇔150mA, Ta=25℃
CL =0.1μF(ceramic)
without CL
3.4
3.1
OutputVoltage
2.8
200
2.5
150
OutputCurrent
100
2.2
50
1.9
0
OutputVoltage : VOUT (V)
300
OutputCurrent : IOUT (mA)
■TYPICAL APPLICATION CIRCUIT
:
1.6
Time : 40μs/div
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