XC6601 Datasheet, PDF (1/11 Pages) Torex Semiconductor – Low Voltage Input LDO Voltage Regulators

XC6601 Series
ETR0335_002
Low Voltage Input LDO Voltage Regulators
Preliminary
˙GENERAL DESCRIPTION
The XC6601 series is a CMOS LDO voltage regulator with precise (ʶ20mV) outputs which enables the operation in ultra low
On resistance even where low output voltages to achieve high efficiency of the output current. The series is suited for the
application which requires low dropout voltage operation. The series consists of a voltage reference, an error amplifier, a driver
transistor, a current limiter, a fold back circuit, a thermal shutdown (TSD) circuit, a Under Voltage Lock Out (U.V.L.O.) and a
phase compensation circuit.
The output voltage is selectable in 50mV increments within the range of 0.7V to 1.8V using laser trimming technologies. The
output stabilization capacitor (C_L) is also compatible with low ESR ceramic capacitors.
The over current protection circuit (the current limiter and the fold back circuit) and the thermal shutdown circuit (the TSD
circuit) are built-in. These two protection circuits will operate when the output current reaches limit level or the junction
temperature reaches temperature limit level.
With the built-in U.V.L.O. function, the regulator output is forced OFF when the VBIAS pin or the VIN pin becomes the U.V.L.O.
voltage or lower.
The CE function enables the output to be turned off and the series becomes a 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
(C_L) to be discharged via the internal auto-discharge switch placed between the V_OUT pin and the V_SS pin, as a result the V_OUT
pin quickly returns to the V_SS level.
˙APPLICATIONS
˔Mobile phones
˔Cordless phones
˔Wireless communication equipment
˔Portable games
˔Cameras
˔Audio visual equipment
˔Portable AV equipment
˔PDAs
˙FEATURES
Maximum Output Current
Dropout Voltage
Bias Voltage Range
Input Voltage Range
Output Voltage Range
Output Voltage Accuracy
Power Consumption
U.V.L.O.
TSD (Detect/Release)
Operating Temperature Range
CL High Speed Auto-Discharge
Low ESR Capacitor
Packages
: 400mA (Limiter 500mA TYP.)
: 35mV@IOUT=100mA (TYP.)
(at VBIAS - VOUT(E)=2.4V)
: 2.5V ~ 6.0V
(VBIAS - VOUT(E)ʾ0.9V)
: 1.0V ~ 3.0V
(VINʽVBIAS)
: 0.7V ~ 1.8V (50mV increments)
:ʶ20mV
: IBIAS=25ЖA , IIN=1.0ЖA (TYP.)
: IBIAS=0.01ЖA , IIN=0.01ЖA (TYP.)
: VBIAS=2.0V, VIN=0.4V (TYP.)
:150ˆ/125ˆ (TYP.)
: -40ˆ ~ 85ˆ
: Ceramic Capacitor Compatible
: USP-6C, SOT-25, SOT-89-5
˙çTYPICAL APPLICATION CIRCUIT ˙çTYPICAL PEFORMANCE
˔VBIAS =3.6V , VIN =1.5V , VOUT =1.2V
CHARACTERISTICS
˔Dropout Voltage vs. Output Current
1/11