XC6229 Series

300mA Ultra Small High Speed LDO Regulator with Built-in Inrush Current Protection

The XC6229 series is a high speed LDO regulator that features high Q125accurate, low noise, high ripple rejection, low dropout and low power consumption. Housed in the ultra-small LGA-4B01 (0.75 x 0.75, h=0.3mm MAX.) package, the XC6229 is ideal for space-saving design. The XC6229 consists of a voltage reference, an error amplifier, a driver transistor, a current limiter, a phase compensation circuit, a thermal shutdown circuit and an inrush current protection circuit.

The CE function enables the circuit to be in stand-by mode by inputting low level signal. In the stand-by mode, the series enables the electric charge at the output capacitor CL to be discharged via the internal switch, and as a result the VOUT pin quickly returns to the VSS level. The output stabilization capacitor CL is also compatible with low ESR ceramic capacitors.

The output voltage is selectable in 0.05V increments within the range of 1.2V to 4.0V which fixed by laser trimming technologies. The over current protection circuit and the thermal shutdown circuit are built-in. These two protection circuits will operate when the output current reaches current limit level or the junction temperature reaches temperature limit level.

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Jan 31, 2011
Product News
Ultra-Small (0.75 x 0.75 x h 0.3 mm), 300mA High-Speed LDO Regulator

Typical Application Circuit


MaximumOutput Current 300mA
Input Voltage Range 1.6~5.5V
Output Voltage Range 2.0~4.0V(Accuracy ±1%)
1.2~1.95V(Accuracy ±20mV)
0.05V increments
Dropout Voltage 80mV@IOUT=150mA(VOUT=3.0V)
Low Quiescent Current 100μA
Stand-by Current 0.1μA
High Ripple Rejection: 80dB@f=1kHz
Protection Circuits Current Limit(400mA),Short Circuit Protection,Thermal Shut Down,Inrush Current Protection
Low ESR Capacitor CIN=1μF, CL=1μF
CE Function Active High, CL High Speed Auto Discharge
Environmentally Friendly EU RoHS compliant, Pb free



Quality Reports


QuestionWhat is the standby current?

The current that flows through the IC in the standby mode. The standby mode means the state where the IC has been turned off by the CE function.