XC6229Series
ETR0362-004
300mA Ultra Small High Speed LDO Regulator, Built-in Inrush Current Protection
■GENERAL DESCRIPTION
The XC6229 series is a high speed LDO regulator that features high accurate, 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.
■APPLICATIONS
●Mobile devices / terminals
●Wireless LAN
■FEATURES
Maximum Output Current
Input Voltage Range
Output Voltages
: 300mA
: 1.6~5.5V
: 2.0~4.0V (Accuracy ±1%)
1.2~1.95V (Accuracy ±20mV)
0.05V increments
●Modules (Wireless, Camera, ect.)
●Smart Phones / Mobile phones
Dropout Voltage
: 80mV@IOUT=150mA (VOUT=3.0V)
Low Power Consumption
Stand-by Current
: 100μA
: 0.1μA
High Ripple Rejection
Protection Circuits
: 80dB@f=1kHz
: Current Limit (400mA)
Short Circuit Protection
Over Heat Protection
Inrush Current Protection
: CIN =1.0μF, CL=1.0μF
: Active High
Low ESR Capacitors
CE Function
CL High Speed Discharge
: -40℃~+85℃
Operating Ambient Temperature
Small Package
:
LGA-4B01 (0.75mm×0.75mm×h 0.3MAX.)
: EU RoHS Compliant, Pb Free
Environmentally Friendly
■TYPICAL PERFORMANCE
CHARACTERISTICS
Load Transient Response
■
TYPICAL APPLICATION CIRCUIT
XC6229x251
tr = tf = 0.5μs, Ta = 25℃, IOUT = 1⇔150mA
VIN = 3.5V, CIN = 1μF (ceramic), CL = 1μF (ceramic)
2.60
400
350
300
250
200
150
100
50
2.55
2.50
Output Voltage
2.45
2.40
2.35
Output Current
2.30
2.25
2.20
0
Time [20μs/div]
1/26