BL8558 Low noise, fast response 500mA LDO regulator General Description： Features： • • • • • • • • • Low Power Consumption: 75uA（Typ.） BL8558 series is a group of positive voltage output, low power consumption, low dropout voltage regulator. Low output noise (47uVRMS) Standby Mode: 0.1uA BL8558 can provide output value in the range of 1.2V~4.5V every 0.1V step. It also can be customized on command. Low dropout Voltage: 0.46V@500mA (Typ.) High Ripple Rejection: 66dB@100Hz (Typ.) Low Temperature Coefficient: ±100ppm/°C BL8558 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module with discharge capability. 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) • • BL8558 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%. Highly Accurate: ±2% (±1% customized) Output Current Limit Applications： • Power source for cellular phones and various kind of PCSs • • BL8558 is available in SOT-23-5, SC-82 packages which is lead free. It also can available in these packages with lead. Battery Powered equipment Power Management of MP3, PDA, DSC, Mouse, PS2 Games • • Reference Voltage Source Regulation after Switching Power BL8558 Typical Performance Characteristics： BL8558 Typical Application Circuit BL8558-2.8V Output Vout(V) BL8558 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2 0 200 400 600 Iload(mA) http://www.belling.com.cn - 1- Total 10 Pages 8/16/2006 BL8558 Selection Guide： BL8558-XX X X Package Type： SA：SOT-89-3 SB：SOT-89-3 RM：SOT-23-3 RN：SOT-23-5 T： TO-92 Features： P：Standard（defualt、lead free） C：Customized Output Voltage： 12……1.2V 15……1.5V 28……2.8V 30……3.0V 35……3.5V …… 45……4.5V Pin Assignment： BL8558-XXPSA BL8558-XXPSB BL8558-XXPRM BL8558-XXPRN BL8558-XXPT http://www.belling.com.cn - 2Total 10 Pages 8/16/2006 BL8558 Pin Description： Pin Number SOT-89-3 (A) SOT-89-3 (B) 1 3 2 3 2 1 SOT-23-5 SOT-23-3 TO-92 5 1 2 3 4 2 3 1 3 1 2 Symbol Function Vout Vin Vss CE NC Output pin Input Pin Ground Pin Chip Enable Pin No Connection Product Classification： Output Voltage Package Type Product Name Package Type Product Name Package Type Product Name 1.2V 1.5V 1.8V 2.1V 2.5V 2.8V 3.0V 3.2V 3.3V 3.5V SOT-89-3A SOT-89-3A SOT-89-3A SOT-89-3A SOT-89-3A SOT-89-3A SOT-89-3A SOT-89-3A SOT-89-3A SOT-89-3A BL8558-12PSA BL8558-15PSA BL8558-18PSA BL8558-21PSA BL8558-25PSA BL8558-28PSA BL8558-30PSA BL8558-32PSA BL8558-33PSA BL8558-35PSA SOT-89-3B SOT-89-3B SOT-89-3B SOT-89-3B SOT-89-3B SOT-89-3B SOT-89-3B SOT-89-3B SOT-89-3B SOT-89-3B BL8558-12PSB BL8558-15PSB BL8558-18PSB BL8558-21PSB BL8558-25PSB BL8558-28PSB BL8558-30PSB BL8558-32PSB BL8558-33PSB BL8558-35PSB SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 BL8558-12PRN BL8558-15PRN BL8558-18PRN BL8558-21PRN BL8558-25PRN BL8558-28PRN BL8558-30PRN BL8558-32PRN BL8558-33PRN BL8558-35PRN 4.5V SOT-89-3A BL8558-45PSA SOT-89-3B BL8558-45PSB SOT-23-5 BL8558-45PRN Output Voltage Package Type Product Name Package Type Product Name 1.2V 1.5V 1.8V 2.1V 2.5V 2.8V 3.0V 3.2V 3.3V 3.5V SOT-23-3 SOT-23-3 SOT-23-3 SOT-23-3 SOT-23-3 SOT-23-3 SOT-23-3 SOT-23-3 SOT-23-3 SOT-23-3 BL8558-12PRM BL8558-15PRM BL8558-18PRM BL8558-21PRM BL8558-25PRM BL8558-28PRM BL8558-30PRM BL8558-32PRM BL8558-33PRM BL8558-35PRM TO-92 TO-92 TO-92 TO-92 TO-92 TO-92 TO-92 TO-92 TO-92 TO-92 BL8558-12PT BL8558-15PT BL8558-18PT BL8558-21PT BL8558-25PT BL8558-28PT BL8558-30PT BL8558-32PT BL8558-33PT BL8558-35PT 4.5V SOT-23-3 BL8558-45PRM TO-92 BL8558-45PT http://www.belling.com.cn - 3Total 10 Pages 8/16/2006 BL8558 Product Marking information: SOT23-5 SOT-23-3 SOT-89-3(A) SOT-89-3(B) TO-92 1： Output voltage 2.：Lot NO. http://www.belling.com.cn - 4Total 10 Pages 8/16/2006 BL8558 Block Diagram： Absolute Maximum Ratings： Max input voltage------------------------------------------------------------------------------------10V Junction Temperature (TJ) ------------------------------------------------------------------------125°C Output Current --------------------------------------------------------------------------------------- 500mA Power Dissipation SOT-23-5 -------------------------------------------------------------------------------------------250mW SOT-23-3 -------------------------------------------------------------------------------------------200mW SOT-89-3 -------------------------------------------------------------------------------------------500mW TO-92 ------------------------------------------------------------------------------------------------350mW Storage Temperature (Ts)--------------------------------------------------------------------------45°C～150°C Recommended Work Conditions： Item Input Voltage Range Ambient Temperature Min Recommended -40 Max 8 85 unit V °C Electrical Characteristics： （Test Conditions: Cin=1uF,Cout=3.4uF,TA=25°C, unless otherwise specified. ） BL8558, for arbitrary output voltage Symbol Parameter Vin Input Voltage Vout Output Voltage Vin=Set Vout+1V 1mA≤Iout≤30mA Vout x0.98 Iout (Max.) Maximun Output Current Vin-Vout=1V 500 http://www.belling.com.cn Conditions - 5Total 10 Pages Min Typ Vout1 Max Units 8 Vout X1.02 V V mA 8/16/2006 BL8558 Dropout Voltage,Vout≥2.8V Iout=100mA Iout=300mA Iout=500mA 88 270 460 120 350 600 mV mV mV ∆Vout ∆Vin ⋅ Vout Line Regulation Iout=40mA 2.8V≤Vin≤8V 0.05 0.2 %/V ∆Vout / ∆Iout Load Regulation 20 40 mV Iss 75 90 uA 0.1 1.0 uA ∆Vout ∆T ⋅ Vout Supply Current Supply Current (Srandby) Output Voltage Temperature Coefficiency PSRR Ripple Rejection Ilim Short Current Limit CE Pull down Resistance CE Input Voltage “H” CE Input Voltage “L” Output Noise Vdrop 1 Istandby Rpd Vceh Vcel en 1. Vin=Set Vout+1V 1mA≤Iout≤500mA Vin=Set Vout+1V Vin=Set Vout+1V Vce=GND Iout=30mA F=100Hz, Ripple=0.5Vp-p Vin=Set Vout+1V Vout=0V 2.0 ±100 ppm/°C 65 dB 200 mA 5.0 1.5 0 BW=10Hz~100kHz 47 10.0 MΩ Vin 0.25 V V uVrms Vdrop=Vin1-(Vout2*0.98) Vout2 is the output voltage when Vin=Vout1+1.0V and Iout=300mA or Iout=500mA. Vin1 is the input voltage at which the output voltage becomes 98% of Vout1 after gradually decreasing the input voltage. Typical Application Circuit： Application hints： NOTE1: Input capacitor (Cin=1uF) is recommended in all application circuit. BL8558 NOTE2: Output capacitor (Cout=3.3uF/4.7uF) is recommended in all application to assure the stability of circuit. Explanation： BL8558 series is a group of positive voltage output, low noise, low power consumption, low dropout voltage regulator. BL8558 can provide output value in the range of 1.2V~4.5V every 0.1V step. It also can be customized on command. BL8558 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. BL8558 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%. http://www.belling.com.cn - 6Total 10 Pages 8/16/2006 BL8558 Typical Performance Characteristics： 1) Output Voltage vs. Output Current (with output short protection) 2) Output Voltage vs. Input Voltage 3 2 1.8 2.5 1.6 1.4 Vout(V) Vout(V) 2 1.5 Vin=3.3V 1 0.5 1.2 Iload=0 Iload=28mA 1 0.8 Vin=3.8V 0.6 Vin=4.8V 0.4 0.2 0 0 200 400 600 800 1000 0 1200 0 2 Iload(mA) 6 8 10 Vin(V) 3) Dropout Voltage vs. Output Current 4) Ripple rejection vs. Frequency 0.7 90 80 0.6 Vout=2.8V 70 Vout=1.8V 60 PSRR(dB) 0.5 Dropout(V) 4 0.4 0.3 50 40 30 0.2 20 0.1 10 0 0 100 200 300 400 500 600 0 0.01 http://www.belling.com.cn 0.1 1 10 100 Freq(kHz) Iload(mA) - 7Total 10 Pages 8/16/2006 BL8558 5) Line transient response Iout=1mA Cout=1uF Iout=50mA Cout=1uF 5V 4V 5V Input Voltage Input Voltage 4V Output Voltage Output Voltage 6) Load transient response Vin=4.6V Cout=1uF Vin=4.6V Cout=4.7uF Output Voltage Output Voltage 50mA 1mA 50mA Output Current Output Current 1mA Vin=5.8V Cout=1uF Vin=5.8V Cout=1uF 60mA 250mA Output Current Output Current 1mA 1mA Output Voltage http://www.belling.com.cn Output Voltage - 8Total 10 Pages 8/16/2006 BL8558 7) Startup response 8) Shutdown response EN voltage EN voltage Output voltage Output voltage http://www.belling.com.cn - 9Total 10 Pages 8/16/2006 BL8558 Package Information: SOT-23-5: Package SOT-23-5 Devices per reel 3000 Package specification： Unit mm Unit: mm SOT-89-3: Package SOT-89-3 Devices per reel 1000 Unit mm Package Dimension: http://www.belling.com.cn - 10Total 10 Pages 8/16/2006 BL8558 SOT-23-3: Package SOT-23-3 Devices per reel 3000 Unit mm Package dimension： http://www.belling.com.cn - 11Total 10 Pages 8/16/2006