BL8568 500mA High PSRR, Low Noise, Fast Response Linear Regulator DESCRIPTION FEATURES BL8568 series is a group of positive voltage output, low power consumption, low dropout voltage regulator. •• •• •• •• •• •• •• •• •• BL8568 can provide output value in the range of 1.2V~4.5V every 0.1V step. It also can be customized on command. BL8568 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module with discharge capability. •• •• Low Power Consumption: 30uA（Typ.） Low output noise (50uVRMS) Standby Mode: 0.1uA Low dropout Voltage: 0.08V@150mA (Typ.) High Ripple Rejection: 72dB@1000Hz (Typ.) Low Temperature Coefficient: ±100ppm/oC Excellent Line regulation: 0.05%/V Build-in chip enable and discharge circuit Output Voltage Range: 1.2V~4.5V (customized on command every 0.1V step) Highly Accurate: ±2% Output Current Limit BL8568 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within ±2%. APPLICATIONS BL8568 is available in SOT-23-5, SC-70-5 packages which is lead free. •• •• •• •• •• TYPICAL APPLICATION CIRCUIT Power source for cellular phones and various kind of PCSs Battery Powered equipment Power Management of MP3, PDA, DSC, Mouse, PS2 Games Reference Voltage Source Regulation after Switching Power ELECTRICAL CHARACTERISTICS Load Regulation (Vin=4.5V, Vout=3.3V) NOTE: Input capacitor (Cin=1uF) and Output capacitor (Cout≥1uF) are recommended in all application circuit. 上海贝岭股份有限公司 www.belling.com.cn 1 BL8568 PIN CONFIGURATION ORDERING INFORMATION BL8568 Code Part No. Description Temperature&Rohs: C: -40~85oC ,Pb Free Rohs Std. Package type: A5: SC-70-5 B5A: SOT-23-5(A) B5B: SOT-23-5(B) Packing type: TR:Tape&Reel (Standard) Output voltage: e.g. 15=1.5V 18=1.8V 45=4.5V Voltage accuracy: Blank(default)=±2% F: product code ZZ: date code Part No. BL8568CB5ATR□□□ Marking F: product code X: output voltage FXZZ ZZ: date code Part No. BL8568CB5BTR□□□ Marking F: Product Code X: Output Voltage Code X: output voltage FXZZ MARKING DESCRIPTION Vout BL8568CA5TR□□□ Marking F: product code Vout Code Vout Code 2.6V 6 4.1V 1 FXZZI X: output voltage 1.2V 2 2.7V 7 4.2V 2 ZZ: date code 1.3V 3 2.8V 8 4.3V 3 1.4V 4 2.9V 9 4.4V 4 | : Type B 1.5V 5 3.0V 0 4.5V 5 1.6V 6 3.1V 1 1.7V 7 3.2V 2 1.8V 8 3.3V 3 1.9V 9 3.4V 4 2.0V 0 3.5V 5 2.1V 1 3.6V 6 2.2V 2 3.7V 7 2.3V 3 3.8V 8 2.4V 4 3.9V 2.5V 5 4.0V PIN DESCRIPTION Pin Description Vss Gound Vin Input voltage supply Vout Output voltage 9 CE Chip enable 0 NC No connection Date code 1 st Z: The year of manufacturing, "8" for year 2008, and "0" for year 2010. Date code 2nd Z: The week of manufacturing, "A" for week 1, "Z" for week 26, "A" for week 27, "Z" for week 52. 上海贝岭股份有限公司 www.belling.com.cn 2 BL8568 BLOCK DIAGRAM DIAGRAM EXPLANATION BL8568 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module with discharge capability. BL8568 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within ±2%. Low ESR ceramic capacitor can be used for BL8568 for both input and output ends. Both 1uF can keep BL8568 work stable. However, a larger output capacitor, such as 3.3uF /4.7uF is always recommended to compensate dymanic load current change. ABSOLUTE MAXIMUM RATING Parameters Value Input Voltage -0.3 ~ 6 V Operation Junction Temperature (Tj) 150 oC Output Current 600 mA Storage Temperature Power Dissipation -65 ~ 150 oC SC70-5 250 mW SOT23-5 360 mW IR Reflow Lead Temperature and Time ESD Rating, Human Body Mode 260oC , 10s 3000 V Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. RECOMMENDED OPERATION RANGE Parameters Input Voltage Operation Ambient Temperature Value 1.2 ~ 6 V -40 ~ 85 oC 上海贝岭股份有限公司 www.belling.com.cn 3 BL8568 ELECTRICAL CHARACTERISTICS o Test condition: Cin=1uF, Cout=1uF, TA=25 C, unless otherwise specified. BL8568, for arbitrary output voltage (Voutset) Symbol Vin Vout IoutMAX Vdrop ∆Vout ∆Vin ⋅ Vout ∆Vout / ∆Iout Iss Ishutdown Parameters Condition Input Voltage Output Voltage Vin=Voutset+1V 1mA≤Iout≤30mA Maximum Output Current Voutset x 0.98 Voutset Max. Unit 6 V Voutset x 1.02 V 600 mA Iout=50mA 25 40 mV Iout=100mA 50 75 mV Iout=150mA 75 115 mV Iout=400mA 220 280 mV Line Reguation Iout=40mA; 2.8V≤Vin≤6V 0.05 0.1 %/V Load Regulation Vin=Voutset+1V 1mA≤Iout≤500mA 100 150 mV Supply Current when Operation Vin=Voutset+1V 30 50 uA 0.1 1 uA Dropout Voltage, Vout≥2.8V Supplay Current when Shut Down Vin=Voutset+1V, Vce=0V Vin=Set Vout+1V Iout=30mA PSRR Power Supply Ripple Rejection Rate Ilimit Output Short Current Limit Vceh CE Input Voltage for “High” Vcel CE Input Voltage for “Low” en Typ. 1.2 Output Voltage Temperature Coefficient ∆Vout ∆T ⋅ Vout Min. Output Noise ±50 ppm/oC F=1000Hz, Ripple=0.5Vpp Vin=Voutset+1V 72 dB Vout=0V 500 mA 1.4 V 0.25 Bandwith=10~100KHz 50 V uVrms NOTE: Voutset is the nominal output voltage that BL8568 is set to, for example, 3.3V. Vdrop=Vin-(Vout*0.98), in which Vout is the output voltage when Vin=Vout set+1.0V at different output current, and Vin is the input voltage at which the output voltage becomes 98% of Vout after gradually decreasing the input voltage. . 上海贝岭股份有限公司 www.belling.com.cn 4 BL8568 TYPICAL PERFORMANCE CHARACTERISTICS o Test condition: Cin=1uF, Cout=1uF, TA=25 C, CE pin is tied to Vin, Voutset=3.3V, unless otherwise specified. 1) Output Voltage vs. Output Current 2) Output Voltage vs. Input Voltage 3) Dropout Voltage vs. Output Current 4) Ripple Rejection vs. Frequency . 上海贝岭股份有限公司 www.belling.com.cn 5 BL8568 TYPICAL PERFORMANCE CHARACTERISTICS (Cont') o Test condition: Cin=1uF, Cout=1uF, TA=25 C, CE pin is tied to Vin, Voutset=3.3V, unless otherwise specified. 5) Line Transient Response (Ch1: Vin 4↔5V; Ch2: Vout) 6) Load Transient Response (Ch1: Iout 1↔50mA; Ch2: Vout) 7) Startup by CE (Ch1: Vout; Ch2: CE) 8) Shutdown by CE (Ch1: Vout; Ch2: CE) 上海贝岭股份有限公司 www.belling.com.cn 6 BL8568 PACKAGE OUTLINE DIMENSION Package Devices per reel SC70-5 3000 Dimension (mm) Package Devices per reel SOT23-5 3000 Dimension (mm) 上海贝岭股份有限公司 www.belling.com.cn 7