◆Regulators with Green Operation (GO) Function
◆Output Voltage Range: 0.8V ~ 4.0V
■APPLICATIONS
●Cellular phones
●Cordless phones
◆Output Current: 200mA <Up to 250mA (TYP.)>
◆Low ESR Capacitor Compatible
●Wireless communication equipment
●Portable games
◆High Ripple Rejection, Low Output Noise
◆CL High-Speed Auto-Discharge (XC6217B/D)
◆Ultra Small Package: USP-4D
●Cameras, VCRs
●Portable AV equipment
●PDAs
■GENERAL DESCRIPTION
■FEATURES
The XC6217 series are precise, low noise, high speed, low
dropout regulators with green operation (GO) function. They
are fabricated using Torex’s CMOS process. Performance
features of the series include high ripple rejection and low
dropout voltage, and the series include a reference voltage
source, an error amplifier, a current limiter, and a phase
compensation circuit.
Output Current
Dropout Voltage
: 200mA <Up to 250mA (TYP.)>
: 80mV@ IOUT=100mA,
VOUT(T)=3.0V
Operating Voltage Range : 1.6V ~ 6.0V (0.8V≦VOUT(T)≦1.55V
: 1.8V ~ 6.0V (1.6V≦VOUT(T)≦4.0V
GO provides high speed operation, low power consumption
and high efficiencies by automatically switching between a high
speed mode (HS) and a power save mode (PS) depending
upon the load current level. The switching point of the GO to
the output current is being fixed inside the IC. When only
high-speed operation is required, it can be fixed by inputting a
high level signal to the GO pin, thus providing operating
conditions with the most suitable level of supply current for the
application.
Output Voltage
Setting Range
Accuracy
: 0.8V~4.0V (50mV increments)
: +2% (HS: VOUT >2.0V)
+30mV (HS: VOUT≦1.95V)
+2.5%, -3.5% (PS: VOUT >2.6V)
+3.5%, -4.5% (PS:1.6≦VOUT≦2.55V)
+70mV, -90mV (PS:0.8≦VOUT≦1.55V)
The CE function enables the output to be turned off resulting in
greatly reduced power consumption. In this state, with the
XC6217B/D series, the IC turns on the internal switch located
between the VOUT and VSS pins. This short enables the
electric charge at the output capacitor (CL) to be discharged via
the internal auto-discharge resistance, and as a result the
VOUT pin quickly returns to the VSS level. The series' output
stabilization capacitor (CL) is also compatible with low ESR
ceramic capacitors.
Low Power Consumption: 4.5μA (TYP.) when PS mode
25μA (TYP.) when HS mode
Standby Current
: Less than 0.1μA
High Ripple Rejection
: 70dB @ 1kHz (When HS mode)
Operating Temperature : -40℃~85℃
Range
Low ESR Capacitor
Ultra Small Packages
: 1.0μF Ceramic capacitor
Output voltage is selectable in 50mV increments within a range
of 0.8V~4.0V, using laser trimming technologies.
compatible
: USP-4D, SOT-25,
The current limiter's foldback circuit also operates as a short
circuit protection for the output current limiter and the output
pin.
■TYPICAL PERFORMANCE
CHARACTERISTICS
■TYPICAL APPLICATION CIRCUIT
XC6217B281MR
VIN=3.8V,Tr=Tf=5usec, Ta=25
℃
CIN=CL=1.0uF(Ceramic)
2.9
2.85
2.8
3
VOUT
VIN
2.95
2.9
VOUT_HSmode
VOUT_GOmode
Input
Input
CL
1uF
2.75
2.7
2.85
2.8
CE
GO
VSS
CIN
(Ceramic)
1uF
2.65
2.6
2.75
2.7
(Ceramic)
2.55
2.5
2.65
2.6
Output Current IOUT=50mA
Time (500usec/div)
IOUT=0.1mA
IOUT=0.1mA
2.45
2.4
2.55
2.5
1/30
XC6217 ETR0322_010
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