XC6601_1 Datasheet, PDF (1/32 Pages) Torex Semiconductor – Low Voltage Input LDO Voltage Regulators

XC6601 Series
Low Voltage Input LDO Voltage Regulators
ETR0335_003
˙GENERAL DESCRIPTION
The XC6601 series is a low voltage input CMOS LDO regulator which provides highly accurate (ʶ20mV) 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 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 (C_L).
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.
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
(C_L) to be discharged via the internal auto-discharge switch which is located 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
UVLO
TSD (Detect/Release)
Operating Temperature Range
CL High Speed Auto-Discharge
Low ESR Capacitor
Packages
: 400mA (Limiter 550mA TYP.)
: 38mV@IOUT=100mA (TYP.)
(at VBIAS - VOUT=2.4V)
: 2.5V ~ 6.0V
(VBIAS - VOUTʾ1.2V)
: 1.0V ~ 3.0V
(VINʽVBIAS)
: 0.7V ~ 1.8V (0.05V 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
˔VBIAS =3.6V , VIN =1.8V , VOUT =1.5V
˙çTYPICAL PEFORMANCE
CHARACTERISTICS
˔Dropout Voltage vs. Output Current
XC6 6 0 1 B1 2 1 MR
300
VBIAS=3.0V
250
VBIAS=3.3V
VBIAS=3.6V
200
VBIAS=4.2V
VBIAS=5.0V
150
Ta=25 [℃]
100
50
0
0
100
200
300
400
　Output Current: IOUT(mA)
1/32