XC6220Series
ETR0341-016
1A LDO Voltage Regulator with “Green Operation”
☆Green Operation-Compatible
■GENERAL DESCRIPTION
The XC6220 series is a highly accurate, low noise, high speed, low dropout, and large current CMOS voltage regulator with
Green Operation function. The series consists of a voltage reference, an error amplifier, a current limiter, an inrush current
prevention circuit and a phase compensation circuit plus a driver transistor.
With a 0.2Ω on-resistance driver transistor integrated, the ultra low dropout voltage performance with output currents up to 1A
greatly extends battery life as does the Green Operation function which can switch between high speed and power save modes
automatically. A low ESR ceramic capacitor can be used for the output stabilization capacitor (CL).
Output voltage is selectable in 0.05V increments within the range of 0.8V~5.0V, using laser trimming technologies.
An over current protection circuit and a thermal shutdown circuit are built in. The over current protection circuit will operate
when the output current reaches its limit current. The thermal shutdown circuit will operate when the junction temperature
reaches its limit temperature. The inrush prevention circuit works by controlling the inrush current which charges to CL when
the IC starts up. In this way, voltage fluctuations in power supply caused by inrush current during system start up can be
minimized.
The CE function enables the output to be turned off and the IC becomes a stand-by mode resulting in greatly reduced power
consumption.
■FEATURES
■APPLICATIONS
●Optical disk drive
Maximum Output Current
Dropout Voltage
: 1000mA (1.2V≦VOUT≦5.0V)
: 20mV @ 100mA (VOUT=3.0V)
: 60mV@ 300mA (VOUT=3.0V)
: 1.6V ~ 6.0V
●Magnetic disk drive
Operating Voltage Range
Output Voltage Range
Accuracy
●Digital still cameras / Camcorders
●Digital audio equipments
: 0.8V ~ 5.0V (0.05V increments)
: ± 1% (VOUT≧2.0V)
: ± 20mV (VOUT<2.0V)
Low Power Consumption
: 8μA (TYP.) in PS mode
: 50μA (TYP.) in HS mode
: -40℃~ 85℃
Thermal Shutdown
Inrush Current Prevention
CL Auto Discharge
CE Pull-Down Resistor
Output Capacitor
: Detect 150℃, Release 135℃(TYP.)
: 700mA (MAX.)
: XC6220 Series B/D type
: XC6220 Series C/D type
: Ceramic Capacitor Compatible
: USP-6C, SOT-25, SOT-89-5
: EU RoHS Compliant, Pb Free
Packages
Environmentally Friendly
■
TYPICAL PERFORMANCE
■TYPICAL APPLICATION CIRCUIT
XC6220x181
CE=VIN, CIN=CL=10μF (ceramic)
500
400
300
200
100
0
Topr=25℃
Topr=-40℃
Topr=85℃
VIN
VIN
Input
CE
VOUT
CIN=10μF
(ceramic)
CL=10μF
(ceramic)
LOAD
VSS
0
200
400
600
800
1000
Output Current: IOUT (mA)
1/26