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XC6601B181ER Datasheet(PDF) 1 Page - Torex Semiconductor

Part # XC6601B181ER
Description  Low Voltage Input LDO Voltage Regulator with Soft-Start Function
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Manufacturer  TOREX [Torex Semiconductor]
Direct Link  http://www.torex.co.jp
Logo TOREX - Torex Semiconductor

XC6601B181ER Datasheet(HTML) 1 Page - Torex Semiconductor

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XC6601 Series
Low Voltage Input LDO Voltage Regulator with Soft-Start Function
FEATURES
Maximum Output Current
: 400mA (Limit:550mA TYP.)
Dropout Voltage
Bias Voltage Range
: 38mV@IOUT=100mA (TYP.)
(at VBIAS - VOUT=2.4V)
:
2.5V ~ 6.0V (VBIAS - VOUT≧1.2V)
Input Voltage Range
: 1.0V ~ 3.0V(VINVBIAS)
Output Voltage Range
: 0.7V ~ 1.8V (0.05V increments)
Output Voltage Accuracy
:±20mV
Power Consumption
: IBIAS=25μA , IIN=1.0μA (TYP.)
IBIAS=0.01μA , IIN=0.01μA (TYP.)
UVLO
: VBIAS=2.0V, VIN=0.4V (TYP.)
TSD (Detect/Release)
: 150℃/125℃ (TYP.)
Soft-Start Time
: 240μs @ VOUT=1.2V (TYP.)
Operating Temperature Range
Function
Low ESR Capacitor
: -40℃ ~ +85℃
: CL High Speed Auto-Discharge
: Ceramic Capacitor Compatible
Packages
: USP-6C, SOT-25, SOT-89-5
Environmentally Friendly
: EU RoHS Compliant, Pb Free
APPLICATIONS
Mobile phones
Cordless phones
Wireless communication equipment
Portable games
Cameras
Audio visual equipment
Portable AV equipment
PDAs
TYPICAL APPLICATION CIRCUIT
VBIAS =3.6V , VIN =1.8V , VOUT =1.5V
TYPICAL PEFORMANCE
CHARACTERISTICS
Dropout Voltage vs. Output Current
ETR0335_005
GENERAL DESCRIPTION
The XC6601 series is a low voltage input CMOS LDO regulator which provides highly accurate (±20mV) outputs and can
supply current efficiently due to its ultra low on-resistance even at low output voltages. The series is ideally suited to the
applications which require very low dropout voltage operation and consists of a voltage reference, an error amplifier, a driver
transistor, a current limiter, a fold back circuit, a thermal shutdown (TSD) circuit, an under voltage lock out (UVLO) circuit,
soft-start circuit and a phase compensation circuit.
Output voltage is selectable in 0.05V increments within a range of 0.7V to 1.8V using laser trimming technology and ceramic
capacitors can be used for the output stabilization capacitor (CL).
The over current protection circuit (the current limiter and the fold back circuit) as well as the thermal shutdown circuit (the
TSD circuit) are built-in. These two protection circuits will operate when either the output current reaches the current limit
level or the junction temperature reaches the temperature limit level.
With the built-in UVLO function, the regulator output is forced OFF when the voltage level at the VBIAS pin or the VIN pin falls
below the UVLO voltage level. With the soft-start function, the inrush current from VIN to VOUT for charging CL at start-up can
be reduced and makes the VIN stable.
The CE function enables the output to be turned off and the series to be put in stand-by mode resulting in greatly reduced
power consumption. At the time of entering the stand-by mode, the series enables the electric charge at the output capacitor
(CL) to be discharged via the internal auto-discharge switch which is located between the VOUT pin and the VSS pin. As a
result the VOUT pin quickly returns to the VSS level.
XC 6601B 121M R
0
50
100
150
200
250
300
0
100
200
300
400
 Output Current: IOUT(mA)
VBIAS=3.0V
VBIAS=3.3V
VBIAS=3.6V
VBIAS=4.2V
VBIAS=5.0V
Ta=25 [℃]


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