BL8568 500mA High PSRR, Linear Regulator, w. Output Discharge DESCRIPTION FEATURES BL8568 series is a group of positive voltage output, low power consumption, low dropout voltage regulator. Output voltage range: 1.0V~4.5V (customized on command every 0.1V step) Low power consumption: 35uA (Typ.) Low output noise (47uVRMS) Shutdown mode: 0.1uA Low dropout voltage: 300mV@300mA (Typ.) High ripple rejection:70dB@1KHz (Typ.) Low temperature coefficient: ±100ppm/C Excellent line regulation: 0.05%/V Build-in 1.5K discharge resistor when CE low Highly accurate: ±2% Output current limit Fold-back output short circuit protection BL8568 can provide output value in the range of 1.0V~4.5V every 0.1V step. It also can be customized on command. BL8568 can also work under a wide input voltage ranging from 2.0V to 6V. BL8568 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. 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-23-3, SOT-23-5, SC-70-5 and DFN1x1-4 packages which is lead free. TYPICAL APPLICATION ELECTRICAL CHARACTERISTICS Vout Vin Vin 1uF CE BL8568 LC1476 Vss Vout 1uF CE NOTE: Input capacitor (Cin=1uF) and Output capacitor (Cout=1uF) are recommended in all application circuit. www.belling.com.cn Power source for cellular phones and various kind of PCSs Battery Powered equipment Power Management of MP3, PDA, DSC, Mouse, PS2 Games Voltage Reference Regulation after Switching Power 1 BL8568 ORDERING INFORMATION BL8568 □ 1 □ 2 □ 3 □ 4 Code PIN CONFIGURATION Product Classification Description Temperature&Rohs: C:-40~85C ,Pb Free Rohs Std. Package type: A5:SC-70-5 B3:SOT-23-3 B5A:SOT-23-5 KE:DFN1x1-4 Packing type: TR:Tape&Reel (Standard) Output voltage: e.g. 15=1.5V 18=1.8V 44=4.4V 1 □ 2 □ 3 □ 4 □ : Product Code X: Output Voltage ZZ: Date Code Product Classification X: Output Voltage ZZ: Date Code MARKING DESCRIPTON : Product Code Vout 1.0V 0 1.1V Code Vout Code 2.3V 3 3.6V 6 1 2.4V 4 3.7V 7 1.2V 2 2.5V 5 3.8V 8 1.3V 3 2.6V 6 3.9V 9 1.4V 4 2.7V 7 4.0V 0 1.5V 5 2.8V 8 4.1V 1 1.6V 6 2.9V 9 4.2V 2 1.7V 7 3.0V 0 4.3V 3 1.8V 8 3.1V 1 4.4V 4 1.9V 9 3.2V 2 4.5V 5 2.0V 0 3.3V 3 2.1V 1 3.4V 4 2.2V 2 3.5V 5 X: Output Voltage ZZ: Date Code Product Classification BL8568CKETR□ □ XX: Output Voltage Vss Vin Vout CE NC XX: Output Voltage (for DFN1X1-4).”18”stands for 1.8V,”28” stands for 2.8V,and “2 8 ” stands for 2.85V. Z: The Year of manufacturing,”1” stands for year 2011,”2” stands for year 2012, and ”8” stands for year 2018. Z: The week of manufacturing. ”A” stands for week 1,”Z” stands for week 26,” A ” stands for week 27,” Z ” stands for week 52. www.belling.com.cn BL8568CB5ATR□ □ : Product Code X: Output Voltage Code (for SC70-5, SOT23-3, SOT23-5) Code BL8568CB3TR□ □ F: Product Code Product Classification Vout BL8568CA5TR□□ 2 Ground Pin Supply Voltage Input Output Voltage Chip Enable No Connection BL8568 ABSOLUTE MAXIMUM RATING Parameter Value Max Input Voltage Operating Junction Temperature(Tj) Output Current Ambient Temperature(Ta) SC70-5 SOT-23-3 Power Dissipation SOT-23-5 DFN1x1-4 Storage Temperature(Ts) Lead Temperature & Time 8V 125C 500mA -40C –85C 250mW 250mW 250mW 600mW -40C -150C 260C,10S Note: Heat Sink Area of PCB for DFN1x1-4 is recommended at least 2.5mmx4mm. Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. RECOMMENDED WORK CONDITIONS Item Min Recommended Max. Unit Input Voltage Range 2 6 V Ambient Temperature* -40 85 C *The operation ambient temperature range is verified on several test samples. Not a test condition for volume production whose test is only performed under 25C. ELECTRICAL CHARACTERISTICS (Test Conditions: Cin=1uF,Cout=1uF,TA=25C, unless otherwise specified. ) BL8568, For Arbitrary Output Voltage Symbol Parameter Vin Input Voltage Output Voltage Vout Iout (Max.) Vdrop Vout>1.5V Vout<=1.5V Maximun Output Current Dropout Voltage,Vout≥2.8V 1 Vout Vin Vout Line Regulation Vout / Iout Load Regulation Iss Supply Current Istandby Supply Current (Srandby) www.belling.com.cn Conditions Min Vin=Set Vout+1V 1mA≤Iout≤30mA 2 Vout x0.98 Vout -0.03 500 Vin-Vout=1V Typ Max Units V Vout 6 Vout X1.02 Vout +0.03 V mA Iout=100mA 100 150 mV Iout=300mA 300 400 mV Iout=40mA 2.8V≤Vin≤6V 0.05 0.2 %/V 50 80 mV 35 80 uA 0.1 1.0 uA Vin=Set Vout+1V 1mA≤Iout≤300mA Vin=Set Vout+1V Vin=Set Vout+1V Vce=Vss 3 BL8568 Vout T Vout Output Voltage Temperature Coefficient Iout=30mA ±100 ppm/C PSRR Ripple Rejection F=1KHz, Ripple=0.5Vp-p Vin=Set Vout+1V 70 dB Ilim Vceh Vcel en Rdischarge Rcepd Current Limit CE Input Voltage “H” CE Input Voltage “L” Output Noise Discharge Resistor CE pin pull down resistor 500 1.5 0 BW=10Hz~100kHz CE=0, Vout=3.0V CE=Vin=5V Vin 0.25 47 1.5K 5M mA V V uVrms ohm ohm NOTE: Vdrop=Vin1-(Vout2*0.98) Vout2 is the output voltage when Vin=Vout1+1.0V and Iout=300mA. Vin1 is the input voltage at which the output voltage becomes 98% of Vout1 after gradually decreasing the input voltage. BLOCK DIAGRAM EXPLANATION BL8568 series is a group of positive voltage output, low noise, low power consumption, low dropout voltage regulator. BL8568 can provide output value in the range of 1.0V~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. 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%. www.belling.com.cn 4 BL8568 TYPICAL PERFORMANCE CHARACTERISTICS (T=25oC) www.belling.com.cn 5 BL8568 Dropout Voltage 1000 Dropoout Voltage(mV) 900 800 700 600 500 400 300 200 Vo=1.3V 100 Vo=1.8V 0 0 100 200 300 400 Iout(mA) Line Transient Response Load Transient Response Vout=3.3V, Iout=20mA (brown: Vin; Red: Vout) Vin=5V, Vout=3.3V, Iout=1-100mA (Green: Iout; Red: Vout) CE Chip Enable Response www.belling.com.cn 6 BL8568 PACKAGE OUTLINE Package SC70-5 Devices per reel 3000Pcs Unit mm SOT-23-5 Devices per reel 3000Pcs Unit mm Package dimension： Package Package Dimension: www.belling.com.cn 7 BL8568 Package SOT-23-3 Devices per reel 3000Pcs Unit mm DFN1x1-4 Devices per reel 5000Pcs Unit mm Package Dimension: Package Package dimension： www.belling.com.cn 8