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Torex Semiconductor - HIGH SPEED GREEN OPERATION LDO VOLTAGE REGULATORS

Numéro de référence XC6217
Description HIGH SPEED GREEN OPERATION LDO VOLTAGE REGULATORS
Fabricant Torex Semiconductor 
Logo Torex Semiconductor 





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XC6217 fiche technique
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Regulators with Green Operation (GO) Function APPLICATIONS
Output Voltage Range: 0.8V ~ 4.0V
Cellular phones
Output Current: 200mA <Up to 250mA (TYP.)>
Low ESR Capacitor Compatible
High Ripple Rejection, Low Output Noise
Cordless phones
Wireless communication equipment
Portable games
Cameras, VCRs
CL High-Speed Auto-Discharge (XC6217B/D) Portable AV equipment
Ultra Small Package: USP-4D
PDAs
GENERAL DESCRIPTION
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.
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.
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.
Output voltage is selectable in 50mV increments within a range
of 0.8V~4.0V, using laser trimming technologies.
The current limiter's foldback circuit also operates as a short
circuit protection for the output current limiter and the output
pin.
TYPICAL APPLICATION CIRCUIT
VIN VOUT
Input
CIN
1uF
(Ceramic)
CE
Input
GO
VSS
CL
1uF
(Ceramic)
XC6217 ETR0322_010
FEATURES
Output Current
: 200mA <Up to 250mA (TYP.)>
Dropout Voltage
: 80mV@ IOUT=100mA,
VOUT(T)=3.0V
Operating Voltage Range : 1.6V ~ 6.0V (0.8VVOUT(T)1.55V
: 1.8V ~ 6.0V (1.6VVOUT(T)4.0V
Output Voltage
: 0.8V~4.0V (50mV increments)
Setting Range
Accuracy
: +2% (HS: VOUT >2.0V)
+30mV (HS: VOUT1.95V)
+2.5%, -3.5% (PS: VOUT >2.6V)
+3.5%, -4.5% (PS:1.6VOUT2.55V)
+70mV, -90mV (PS:0.8VOUT1.55V)
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
: 1.0μF Ceramic capacitor
compatible
Ultra Small Packages : USP-4D, SOT-25,
TYPICAL PERFORMANCE
CHARACTERISTICS
2.9
2.85
2.8
2.75
2.7
2.65
2.6
2.55
2.5
IOUT=0.1mA
2.45
2.4
XC6217B281MR
VIN=3.8V,Tr=Tf=5usec, Ta=25
CIN=CL=1.0uF(Ceramic) 3
VOUT_HSmode
2.95
2.9
VOUT_GOmode
2.85
2.8
2.75
2.7
Output Current IOUT=50mA
IOUT=0.1mA
2.65
2.6
2.55
Time (500usec/div)
2.5
1/30

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