BL8509-420

BL8509 Low Voltage Detector with Built-in Delay Circuit Outline: BL8509 is a series of high precision voltage detector with ultra low current consumption (500nA typ. at Vdd=3.0V) and a built-in delay circuit. It can work at very low voltage, which makes it perfect for system reset. BL8509 is composed of high precision voltage reference, comparator, delay circuit, output driver and resistor array. Internally preset detect voltage has a low temperature drift and requires no external trimming. Two type of output, CMOS and N-channel open-drain are available. BL8509 is available in SOT-23 which is Pb free. Features High-precision detection Voltage Detection Voltage 2% 0.9V~6.0V (in 0.1V steps) Built-in Power on Reset Delay Time circuit::Refer to Selection Guide Operating Voltage range 0.7V~10V 500nA typ. (at Ultra-low current consumption VDD 3.0V) Two Output forms CMOS and N-channel open-drain (Active Low) Application Power monitor for portable equipment such as PDA,DSC,Mobile phone,Notebook,MP3 CPU and Logic Circuit Reset Battery Checker Battery Back-up Circuit Power Failure Detector http://www.belling.com.cn - 1Total 17 Pages 8/8/2006 BL8509 Selection Guide 8509- XXX X X XX Pin Alignment Package type RM SOT-23-3 Output type N Nch C CMOS Delay time A 50mS B 100mS C 150mS D 200mS E 250mS F 300mS G 400mS Detector voltage 090 0.9V 100 1.0V 263 2.63V 300 3.0V 465 4.65V 600 6.0V (In 0.1V step) Pin Description: PIN Number 1 2 3 PIN Name VSS VOUT VDD Function GND Pin Voltage detection output Pin Voltage input Pin http://www.belling.com.cn - 2Total 17 Pages 8/8/2006 BL8509 Block diagram: N channel open-drain Absolute Maximum Ratings CMOS output Input Voltage range -------------------------------------------------------------------------------------0.3V~12V Output Voltage range-----------------------------------------------------------------------------------0.3V~12V Maximum Output current -----------------------------------------------------------------------------70mA Maximum power dissipation -------------------------------------------------------------------------150mW Ambient temperature ---------------------------------------------------------------------------------- -40~+70 C Storage temperature----------------------------------------------------------------------------------- -40~125 C Lead temperature and time --------------------------------------------------------------------------260 C,10S Recommended Work Conditions Item Input Voltage range Ambient temperature Min 0.7 -40 Recommended 25 Max 10 70 unit V Electrical Characteristics BL8509-090DNRM Symbol -VDET ISS VDDH VDDL 0.9V Conditions VDD=2.9V (Topt 25 ,Unless otherwise specified.) Unit V uA V V mA mA Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage Reference data Min. Typ. Max. 0.882 0.9 0.918 1 1.5 10 0.5 IOUT Output current Nch VDS=0.05V VDD=0.7V VDS=0.50V VDD=0.8V Pch VDS=-2.1V VDD=4.50V 0.01 0.05 1.0 0.05 0.50 2.0 http://www.belling.com.cn - 3Total 17 Pages 8/8/2006 BL8509 BL8509-270DNRM Symbol -VDET ISS VDDH VDDL 2.7V Conditions VDD=4.7V (Topt 25 ,Unless otherwise specified.) Reference data Typ. Max. 2.7 2.754 0.5 1 10 0.5 Nch VDS=0.05V VDD=0.70V Pch VDS=-2.1V VDD=4.50V (Topt Conditions VDD=5.0V Unit V uA V V mA 0.01 0.05 mA 1.0 25 2.0 Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage Min. 2.646 IOUT Output current BL8509-300DNRM Symbol -VDET ISS VDDH VDDL 3.0V ,Unless otherwise specified.) Reference data Typ. Max. 3.0 3.06 0.5 1 10 0.5 Unit V uA V V mA Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage Min. 2.94 IOUT Output current Nch VDS=0.05V Pch VDS=-2.1V VDD=0.7V VDD=4.50V (Topt 0.01 1.0 25 0.05 2.0 mA BL8509-340DNRM Symbol -VDET ISS VDDH VDDL 3.4V Conditions VDD=5.0V ,Unless otherwise specified.) Reference data Typ. Max. 3.4 3.468 0.5 1 10 0.5 Unit V uA V V mA Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage Min. 3.332 IOUT Output current Nch VDS=0.05V Pch VDS=-2.1V VDD=0.7V VDD=4.50V 0.01 1.0 0.05 2.0 mA http://www.belling.com.cn - 4Total 17 Pages 8/8/2006 BL8509 BL8509-440DNRM Symbol -VDET ISS VDDH VDDL 4.4V Conditions VDD=6.4V (Topt 25 ,Unless otherwise specified.) Reference data Typ. Max. 4.4 4.488 0.5 1 10 0.5 Nch VDS=0.05V Pch VDS=-2.1V Unit V uA V V mA 0.01 1.5 0.05 3.0 mA Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage Min. 4.312 IOUT Output current VDD=0.7V VDD=8.0V http://www.belling.com.cn - 5Total 17 Pages 8/8/2006 BL8509 Electrical Characteristics By Detector Threshold Detector Threshold Part Number Min. BL8509-0900XXXXX BL8509-1000XXXXX BL8509-1100XXXXX BL8509-1200XXXXX BL8509-1300XXXXX BL8509-1400XXXXX BL8509-1500XXXXX BL8509-1600XXXXX BL8509-170XXXX BL8509-180XXXX BL8509-190XXXX BL8509-200XXXX BL8509-210XXXX BL8509-220XXXX BL8509-230XXXX BL8509-240XXXX BL8509-250XXXX BL8509-260XXXX BL8509-270XXXX BL8509-280XXXX BL8509-290XXXX BL8509-300XXXX BL8509-310XXXX BL8509-320XXXX BL8509-330XXXX BL8509-340XXXX BL8509-350XXXX BL8509-360XXXX BL8509-370XXXX BL8509-380XXXX BL8509-390XXXX BL8509-400XXXX BL8509-410XXXX BL8509-420XXXX BL8509-430XXXX BL8509-440XXXX BL8509-450XXXX BL8509-460XXXX BL8509-470XXXX BL8509-480XXXX BL8509-490XXXX BL8509-500XXXX BL8509-510XXXX BL8509-520XXXX BL8509-530XXXX BL8509-540XXXX BL8509-550XXXX BL8509-560XXXX BL8509-570XXXX BL8509-580XXXX BL8509-590XXXX BL8509-600XXXX 0.882 0.980 1.078 1.176 1.274 1.372 1.470 1.568 1.666 1.764 1.862 1.960 2.058 2.156 2.254 2.352 2.450 2.548 2.646 2.744 2.842 2.940 3.038 3.136 3.234 3.332 3.430 3.528 3.626 3.724 3.822 3.920 4.018 4.116 4.214 4.312 4.410 4.508 4.606 4.704 4.802 4.900 4.998 5.096 5.194 5.292 5.390 5.488 5.586 5.684 5.782 5.880 -Vdet[V] Typ. 0.900 1.000 1.100 1.200 1.300 1.400 1.500 1.600 1.700 1.800 1.900 2.000 2.100 2.200 2.300 2.400 2.500 2.600 2.700 2.800 2.900 3.000 3.100 3.200 3.300 3.400 3.500 3.600 3.700 3.800 3.900 4.000 4.100 4.200 4.300 4.400 4.500 4.600 4.700 4.800 4.900 5.000 5.100 5.200 5.300 5.400 5.500 5.600 5.700 5.800 5.900 6.000 Max. 0.918 1.020 1.122 1.224 1.326 1.428 1.530 1.632 1.734 1.836 1.938 2.040 2.142 2.244 2.346 2.448 2.550 2.652 2.754 2.856 2.958 3.060 3.162 3.264 3.366 3.468 3.570 3.672 3.774 3.876 3.978 4.080 4.182 4.284 4.386 4.488 4.590 4.692 4.794 4.896 4.998 5.100 5.202 5.304 5.406 5.508 5.610 5.712 5.814 5.916 6.018 6.120 0.5 1.0 Vdd= (-Vdet) +0.1V 0.5 1.0 Vdd= (-Vdet) +2V 1.0 1.5 Condition Supply Current1 Iss1[uA] Typ. Max. Condition Supply Current2 Iss2[uA] Typ. Max. http://www.belling.com.cn - 6Total 17 Pages 8/8/2006 BL8509 Output Current1 Iout1[mA] Condition Min. Typ. Condition Output Current2 Iout2[mA] Min. Vdd=0.8 0.1 5V Typ. 0.5 Minimum Detector Threshold Operating Voltage Temperature Coefficient VDDL[V] -VDET/ Tppm/°C Typ. Max. Condition Typ. Vdd=1.0V 0.2 1.0 NCH, VDS=0.05V NCH, 0.01 0.05 , VDS=0.5V VDD=0.7V VDD=1.5V 0.5 0.7 1.0 2.0 -40 C Topt 85 C 100 Electrical Characteristics by Output Delay Time Part Number 8509-xxxAxxx 8509-xxxBxxx 8509-xxxCxxx 8509-xxxDxxx 8509-xxxExxx 8509-xxxFxxx 8509-xxxGxxx Test Condition Output Delay Time Min. Typ. Max. 45 90 135 180 225 270 360 50 100 150 200 250 300 400 55 110 165 220 275 330 440 Unit VDD=1.0V to Vdet+1.0V ms http://www.belling.com.cn - 7Total 17 Pages 8/8/2006 BL8509 Function description: Delay Comparator High precision low temperature co-efficiency reference voltage is applied to the negative input of a comparator. Input voltage, divided by resistor array of Ra and Rb, is applied to the positive input of the comparator. Output of the comparator passes a delay circuit and a series of buffer to drive the output CMOS pair. VDET =VREF*(1+Ra/Rb) http://www.belling.com.cn - 8Total 17 Pages 8/8/2006 BL8509 Detector Treshold(Vdet) =Release Voltage Minimum Operating Voltage Supply Voltage Output Voltage (OUT) Tdelay No. I II III IV V Operation status VDD>Vdet VDD drops below Vdet VDD drops further below VDDL VDD rises above VDDL VDD rises above Vdet Output status Output voltage is equal to the supply voltage Output voltage equals to GND level Output voltage is undefined Output voltage equals to GND level Output voltage equals to supply voltage after Tdelay http://www.belling.com.cn - 9Total 17 Pages 8/8/2006 BL8509 Test circuits 1 Supply current test circuit 2 Detector threshold test circuit BL8509 BL8509 3 NCH Drive Output Current Test Circuit 4 PCH Drive Output Current Test Circuit BL8509 BL8509 http://www.belling.com.cn - 10Total 17 Pages 8/8/2006 BL8509 Typical Performance Characteristics 1) Supply current VS. Input voltage Detector threshold= 0.9V 1.E-05 Supply current (A) Supply current(A) 1.E-05 Detector threshold=2.7V 1.E-06 -40ºC 1.E-07 25ºC 70ºC 1.E-08 0 1 2 3 4 5 6 Input voltage (V) 1.E-06 1.E-07 -40ºC 25ºC 70ºC 1.E-08 0 1 2 3 4 5 6 Input voltage (V) Detector threshold=3.0V 1.E-05 Supply current (A) Supply current(A) 1.E-05 Detector threshold=4.4V 1.E-06 1.E-06 1.E-07 -40ºC 25ºC 70ºC 1.E-07 -40ºC 25ºC 70ºC 1.E-08 0 1 2 3 4 5 6 Input voltage (V) 1.E-08 0 1 2 3 4 5 6 Input voltage (V) http://www.belling.com.cn - 11Total 17 Pages 8/8/2006 BL8509 2) Detector Threshold VS. Temperature Detector threshold= 0.9V 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.85 -50 -30 -10 10 30 50 70 90 Temperature (°C) 2.78 Detector threshold(V) 2.74 2.70 2.66 2.62 2.58 2.54 -50 -30 -10 10 30 50 70 90 Temperature(°C) Detector threshold=2.7V Detector threshold (V) Detector threshold=3.0V 3.04 Detector threshold(V) Detector threshold=4.4V 4.50 4.48 Detector threshold(V) 4.46 4.44 4.42 4.40 4.38 4.36 4.34 4.32 4.30 -50 -30 -10 10 30 50 70 90 Temperature(°C) 3.02 3.00 2.98 2.96 2.94 2.92 2.90 -50 -30 -10 10 30 50 70 90 Temperature(°C) http://www.belling.com.cn - 12Total 17 Pages 8/8/2006 BL8509 3 Nch Driver Output Current VS. VDS BL8509-090xxx 8.00E-04 7.00E-04 Output current A) 6.00E-04 5.00E-04 4.00E-04 3.00E-04 2.00E-04 1.00E-04 0.00E+00 0.00 0.20 0.40 VDS (V) VDD=0.7V VDD=0.8V 0.60 0.80 Output current A) 1.20E-02 1.00E-02 8.00E-03 6.00E-03 4.00E-03 2.00E-03 0.00E+00 0.00 BL8509-270xxx VDD=1.0V VDD=2.0V 0.50 1.00 1.50 2.00 2.50 VDS (V) BL8509-300xxx 1.20E-02 1.00E-02 Output current A) 8.00E-03 6.00E-03 4.00E-03 2.00E-03 0.00E+00 0.00 VDD=1.0V VDD=2.0V 0.50 1.00 1.50 2.00 2.50 Output current A) 2.50E-02 2.00E-02 1.50E-02 1.00E-02 5.00E-03 0.00E+00 0.00 BL8509-440xxx VDD=1.0V VDD=2.0V VDD=3.0V 1.00 2.00 VDS (V) 3.00 4.00 VDS (V) http://www.belling.com.cn - 13Total 17 Pages 8/8/2006 BL8509 4 NCH Driver Output Current vs. Input Voltage Detector threshold=2.7V 1.E-02 Output Current Iout (A) -40ºC 25ºC 8.E-03 75ºC 1.E-02 Output Current Iout (A) Detector threshold=3.0V -40ºC 25ºC 8.E-03 75ºC 4.E-03 4.E-03 0.E+00 0 1 2 3 Input Voltage Vin (V) 0.E+00 0 1 2 3 Input Voltage Vin (V) 5 PCH Driver Output Current vs. Input Current Detector threshold=0.9V Detector threshold=2.7V 20.0 Output Current Iout mA VDS=0.5V VDS=0.7V 15.0 10.0 5.0 0.0 0 2 4 Input Voltage Vin V 6 8 0 1 2 3 4 V 5 6 7 Input Voltage Vin VDS=0.5V VDS=1.0V VDS=1.5V VDS=2.0V 8.0 Output Current Iout(mA) 6.0 4.0 2.0 0.0 Detector threshold=4.4V 25.0 Output Current Iout mA 20.0 15.0 10.0 5.0 0.0 0 2 4 6 V 8 10 Input Voltage Vin VDS=0.5V VDS=1.0V VDS=1.5V VDS=2.0V http://www.belling.com.cn - 14Total 17 Pages 8/8/2006 BL8509 Typical applications Note 1. R0 is unnecessary for CMOS output products. 2. The value of R0 need to be selected in different application, Typical value is 470k http://www.belling.com.cn - 15Total 17 Pages 8/8/2006 BL8509 Package Outline SOT-23-3: Package SOT-23-3 Devices per reel 3000 Unit mm Package dimension Taping Specification http://www.belling.com.cn - 16Total 17 Pages 8/8/2006 BL8509 Taping reel dimension http://www.belling.com.cn - 17Total 17 Pages 8/8/2006