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XC6220 Series
1A LDO Voltage Regulator with “GreenOperation”
☆GreenO
eration-Com
atible
■GENERAL DESCRIPTION
The XC6220 series is a highly accurate, low noise, high speed, low dropout, and large current CMOS voltage regulator with
GreenOperation 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 and with output currents up to 1A, the ultra low dropout voltage
performance greatly extends battery life as does the GreenOperation function which can switch between high speed and
power save modes automatically. Low ESR ceramic capacitors can be used for the output stabilization capacitor (C
L
).
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 protection circuit works by controlling the inrush current which is charged to C
L
when
the IC starts up. In this way, any fluctuations to V
IN
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.
■
PPLICATIONS
●CD-ROM, CD-R/RW drives
●DVD drives
●HDD drives
●MIDs, UMPCs
●Digital still cameras, Video cameras
●Portable AV equipment
■TYPICAL APPLICATION CIRCUIT
ETR0341-007
■FEATURES
Maximum Output Current
Dropout Voltage
Operating Voltage Range
Output Voltage Range
Accuracy
Low Power Consumption
Operating Temperature
Thermal Shutdow n
Inrush Current Protection
C
L
Auto Discharge
CE Pull-Down Resistor
Output Capacitor
Packages
Environmentally Friendly
: 1000mA (TYP.:1200mA limit)
(1.2V≦V
OUT
≦5.0V)
: 20mV @ 100mA (V
OUT
=3.0V)
: 60mV@ 300mA (V
OUT
=3.0V)
: 1.6V ~ 6.0V
: 0.8V ~ 5.0V (0.05V increments)
:±1% (V
OUT
≧2.0V)
:±20mV (V
OUT
＜2.0V)
: 8μA (TYP.) in PS mode
: 50μA (TYP.) in HS mode
: - 40℃~ +85℃
: Detect 150℃, Release 135℃(TYP.)
: 700mA (MAX.)
: XC6220B/D Series
: XC6220C/D Series
: Ceramic Capacitor Compatible
: USP-6C, SOT-25, SOT-89-5
: EU RoHS Compliant, Pb Free
■
TYPICAL PERFORMANCE
CHARACTERISTICS
XC6220x181
0
100
200
300
400
500
0 200 400 600 800 1000
Output Current: I
OUT
(mA)
Dropout Voltage: Vdif (mV)
Topr=25℃
Topr=-40℃
Topr=85℃
CE=V
IN
, C
IN
=C
L
=10μF (ceramic
