XC6221A451MR-G 查看數據表（PDF） - TOREX SEMICONDUCTOR

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XC6221A451MR-G

Low ESR Caps Compatible High Speed LDO Voltage Regulators with ON/OFF Switch

TOREX SEMICONDUCTOR 

XC6221 Series

ETR0328_014

■GENERAL DESCRIPTION

The XC6221 series is a high accuracy, low noise, high speed, low dropout CMOS regulator with high ripple rejection. The series

includes a reference voltage source, an error amplifier, a current limiter, and a phase compensation circuit.

The CE function enables the entire circuit to be in stand-by state by inputting low level signal. As for the XC6221B/D stand-by

mode, the electric charge at the output capacitor (CL) will be discharged by the internal auto-discharge switch, and as a result

the VOUT pin quickly returns to the VSS level. The output stabilization capacitor (CL) is also compatible with low ESR ceramic

capacitors.

Output voltage is selectable in 0.05V increments within a range of 0.80V~5.00V, using the laser trimming technology set in

factory.

The current limiter's fold-back circuit also operates as a short circuit protection and an output current limiter at the output pin.

The series achieves a fast response with only 25μA of low power consumption. Also the series has low dropout voltage

characteristics, which is 80mV at IOUT=100mA and VOUT=3.0V.

With the use of small USP-4 and ultra small USPN-4 packages, a small footprint circuit can be designed.

■APPLICATIONS

●Cellular phones

●Cordless phones

●Wireless communication equipment

●Portable games

●Cameras, VCRs

●Portable AV equipment

●PDAs

■FEATURES

Maximum Output Current : 200mA <Up to 250mA (TYP.)>

Dropout Voltage

Operating Voltage Range

: 80mV@ IOUT=100mA,VOUT=3.0V

: 1.6V ~ 6.0V

Output Voltage Range

Accuracy

Low Power Consumption

Stand-by Current

: 0.80V~5.00V (0.05V increments)

: +2% (VOUT >1.50V) (Standard)

+30mV (VOUT≦1.45V) (Standard)

+1% (VOUT >2.00V) (High Accuracy)

+20mV (VOUT≦1.95V) (High Accuracy)

: 25μA (TYP.)

: Less than 0.1μA

High Ripple Rejection

CE Function

: 70dB @ 1kHz

: CE Active High

Standby current below 0.1μA

CL High-Speed Auto-Discharge

(XC6221B/D)

CE Pin internally pulled-down

(XC6221C/D)

Low ESR Capacitor

: 1.0μF ceramic capacitor

Low Output Noise

Operating Ambient Temperature : -40℃~+85℃

Packages

: USP-4, SOT-25, SSOT-24

USPN-4

Environmentally Friendly : EU RoHS Compliant, Pb Free

■TYPICAL APPLICATION CIRCUIT

■ TYPICAL PERFORMANCE

CHARACTERISTICS

●Load Transient Response

XC6221x182

VIN=VCE=2.8V , Tr=Tf=5μs

Ta=25℃ , CIN=CL=1.0μF (ceramic)

1.9

300

Output Voltage

1.8

250

1.7

200

1.6

150

100mA

Output Current

1.5

100

1.4

10mA

1.3

Time: (500μs/div)

50

0

1/28

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