AMS6221 ■GENERAL DESCRIPTION The AMS6221 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 AMS6221 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 0.1V increments within a range of 2.0V~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 45μA of low power consumption. Also the series has low dropout voltage characteristics, which is 200mV at IOUT=100mA . ■FEATURES APPLICATIONS ●Cellular phones ●Cordless phones ●Wireless communication equipment ●Portable games ●Cameras, VCRs ●Portable AV equipment ●PDAs Maximum Output Current Dropout Voltage Operating Voltage Range Output Voltage Range Accuracy Low Power Consumption Stand-by Current High Ripple Rejection CE Function Stand-by Current High Ripple Rejection Low ESR Capacitor Low Output Noise Packages Environmentally Friendly Operating Ambient Temperature ■TYPICAL APPLICATION CIRCUIT Advanced Monolithic Systems http://www.ams-semitech.com : 300mA (TYP.) : 200mV@ IOUT=100mA : < 8V : 2.0V~5.0V : + 2% (Standard) : 45uA (TYP.) : Less than 1uA : 70dB @ 1kHz : CE Active High : Less than 0.1μA : 70dB @ 1kHz : SOT23-5 : EU RoHS Compliant, Pb Free : -40℃~+85℃ AMS6221 ■PIN CONFIGURATION VOUT NC 5 4 1 2 3 VIN Vss CE SOT23-5 (TOP VIEW) ■PIN ASSIGNMENT PIN NUMBER PIN NAME FUNCTIONS 1 VIN Power Input 5 VOUT Output 2 VSS Ground 3 CE ON/OFF Control 4 NC No Connection SOT23-5 PIN NAME CE DESIGNATOR CONDITIONS H 1.2V≦VCE≦6.0V L VCE≦0.3V ■ BLOCK DIAGRAMS Advanced Monolithic Systems http://www.ams-semitech.com AMS6221 ■ ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Ｉｎｐｕｔ Ｖｏｌｔａｇｅ VIN Iout Ｏｕｔｐｕｔ Ｃｕｒｒｅｎｔ Ｏｕｔｐｕｔ Ｖｏｌｔａｇｅ Ｐｏｗｅｒ SOT23 Ｄｉｓｓｉｐａｔｉｏｎ SOT89 Ｏｐｅｒａｔｉｎｇ Ｔｅｍｐｅｒａｔｕｒｅ Ｓｔｏｒａｇｅ Ｔｅｍｐｅｒａｔｕｒｅ Ｓｏｌｄｅｒｉｎｇ Ｔｅｍｐ ＆ Ｔｉｍｅ Vout RATINGS 8 UNITS V 500 mA Vss-0.3 ~ Vout+0.3 V Pd 300 mW Pd 500 mW TOpr -25 ~ +85 ℃ Tstg -40 ~ +125 ℃ Tsolder 260℃, 10s ■ ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Ｏｕｔｐｕｔ Ｖｏｌｔａｇｅ VOUT(E) (Note 2) IOUT=40mA, VIN=Vout+1V X 0.98 VOUT (T) X 1.02 V 7.0 V (Note 1) Ｉｎｐｕｔ Ｖｏｌｔａｇｅ VIN Ｍａｘｉｍｕｍ Ｏｕｔｐｕｔ Ｃｕｒｒｅｎｔ Ｌｏａｄ Ｒｅｇｕｌａｔｉｏｎ Ｄｒｏｐｏｕｔ Ｖｏｌｔａｇｅ (Note 3) Ｑｕｉｅｓｃｅｎｔ Ｃｕｒｒｅｎｔ ＣＥ Ｌｏｗ Ｌｅｖｅｌ Ｃｕｒｒｅｎｔ Ｌｉｎｅ Ｒｅｇｕｌａｔｉｏｎ IOUTmax ∆VOUT Vdif1 Vdif2 ISS ICEL ∆VOUT ∆VIN • VOUT Ｏｕｔｐｕｔ Ｎｏｉｓｅ en PSRR VIN=Vout+1V 300 mA VIN=Vout+1V, 1mA≤IOUT≤100mA IOUT =100mA 30 mV 200 mV IOUT =200mA 400 mV VIN=Vout+1V 45 μA Vce＝0V 0.1 μA IOUT =40mA Vout+1V ≤VIN≤8V 0.05 %/V 50 uVrms 70 dB IOUT =40mA， 300Hz~50kHz Vin= [Vout+1]V +1Vp-pAC IOUT =40mA,f=1kHz 注 : 1. VOUT (T) ：Ｎｏｍｉｎａｌ ｏｕｔｐｕｔ ｖｏｌｔａｇｅ 2. VOUT (E) ：Ｅｆｆｅｃｔｉｖｅ ｏｕｔｐｕｔ ｖｏｌｔａｇｅ 3. Vdif ：VIN1 –VOUT (E)’ VIN1 ｉｓ ｔｈｅ ｉｎｐｕｔ ｖｏｌｔａｇｅ ｗｈｅｎ ＶＯＵＴ１ ａｐｐｅａｒｓ ａｔ ｔｈｅ ＶＯＵＴ ｐｉｎ ｗｈｉｌｅ ｉｎｐｕｔ ｖｏｌｔａｇｅ ｉｓ ｇｒａｄｕａｌｌｙ ｄｅｃｒｅａｓｅｄ． VOUT (E)’ is the voltage equal to 98% of the normal output voltage when amply stabilized VOUT (T) +1.0V are input at the VIN pin. Advanced Monolithic Systems http://www.ams-semitech.com AMS6221 ■PACKAGING INFORMATION ●SOT23-5 (unit : mm) Symbol A mm MIN - TYPE - MAX 1.25 A1 0 - 0.15 A2 A3 b b1 c c1 D E E1 e e1 L L1 L2 R R1 θ θ1 θ2 1.00 0.60 0.36 0.36 0.14 0.14 2.826 2.60 1.526 1.10 0.65 0.38 0.15 2.926 2.80 1.626 0.95BSC 1.90BSC 0.45 0.59REF 0.25BSC 5° 8° 1.20 0.70 0.50 0.45 0.20 0.16 3.026 3.00 1.726 0.35 0.10 0.10 0° 3° 6° Advanced Monolithic Systems 0.60 0.25 8° 7° 10° http://www.ams-semitech.com AMS6221 Advanced Monolithic Systems http://www.ams-semitech.com