BL8509 Low Voltage Detector with Built-in Delay Circuit Features Outline: High-precision detection Voltage 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. Detection Voltage 0.9V~6.0V (in 0.1V steps) Built-in Power on Reset Delay Time circuit::Refer to Selection Guide Operating Voltage range 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. 2% 0.7V~10V Ultra-low current consumption VDD 3.0V) 500nA typ. (at Two Output forms CMOS and N-channel open-drain (Active Low) Application BL8509 is available in SOT-23 which is Pb free. 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 Pin Alignment Selection Guide 8509- XXX X X XX 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 PIN Name Function 1 2 3 VSS VOUT VDD GND Pin Voltage detection output Pin Voltage input Pin http://www.belling.com.cn - 2Total 17 Pages 8/8/2006 BL8509 Block diagram: CMOS output N channel open-drain Absolute Maximum Ratings 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 Max 10 70 25 unit V Electrical Characteristics BL8509-090DNRM 0.9V Symbol Parameter -VDET ISS Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage VDDH VDDL IOUT Output current http://www.belling.com.cn (Topt Conditions VDD=2.9V 25 ,Unless otherwise specified.) Reference data Min. Typ. Max. 0.882 0.9 0.918 1 1.5 Unit V uA 10 Nch VDS=0.05V VDD=0.7V VDS=0.50V VDD=0.8V Pch VDS=-2.1V VDD=4.50V - 3Total 17 Pages V 0.5 V 0.01 0.05 0.05 0.50 mA 1.0 2.0 mA 8/8/2006 BL8509 BL8509-270DNRM 2.7V Symbol Parameter -VDET ISS Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage VDDH VDDL IOUT Output current BL8509-300DNRM Parameter -VDET ISS Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage VDDL IOUT Output current BL8509-340DNRM Parameter -VDET ISS Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage VDDL IOUT Output current http://www.belling.com.cn 25 ,Unless otherwise specified.) Min. 2.646 VDD=4.7V Reference data Typ. Max. 2.7 2.754 0.5 1 Unit V uA 10 V 0.5 Nch VDS=0.05V VDD=0.70V Pch VDS=-2.1V VDD=4.50V V mA 0.01 0.05 1.0 2.0 mA (Topt Conditions 25 ,Unless otherwise specified.) Min. 2.94 VDD=5.0V Reference data Typ. Max. 3.0 3.06 0.5 1 Unit V uA 10 V 0.5 Nch VDS=0.05V VDD=0.7V Pch VDS=-2.1V VDD=4.50V 3.4V Symbol VDDH Conditions 3.0V Symbol VDDH (Topt (Topt Conditions V mA 0.01 0.05 1.0 2.0 25 mA ,Unless otherwise specified.) Min. 3.332 VDD=5.0V Reference data Typ. Max. 3.4 3.468 0.5 1 Unit 10 0.5 Nch VDS=0.05V VDD=0.7V Pch VDS=-2.1V VDD=4.50V - 4Total 17 Pages V uA V V mA 0.01 0.05 1.0 2.0 mA 8/8/2006 BL8509 BL8509-440DNRM 4.4V Symbol Parameter -VDET ISS Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage VDDH VDDL IOUT Output current http://www.belling.com.cn (Topt Conditions 25 ,Unless otherwise specified.) Min. 4.312 VDD=6.4V Reference data Typ. Max. 4.4 4.488 0.5 1 Unit 10 0.5 Nch VDS=0.05V VDD=0.7V Pch VDS=-2.1V VDD=8.0V - 5Total 17 Pages V uA V V mA 0.01 0.05 1.5 3.0 mA 8/8/2006 BL8509 Electrical Characteristics By Detector Threshold Detector Threshold Supply Current1 -Vdet[V] Iss1[uA] Part Number Min. Typ. Max. BL8509-0900XXXXX 0.882 0.900 0.918 BL8509-1000XXXXX 0.980 1.000 1.020 BL8509-1100XXXXX 1.078 1.100 1.122 BL8509-1200XXXXX 1.176 1.200 1.224 BL8509-1300XXXXX 1.274 1.300 1.326 BL8509-1400XXXXX 1.372 1.400 1.428 BL8509-1500XXXXX 1.470 1.500 1.530 BL8509-1600XXXXX 1.568 1.600 1.632 BL8509-170XXXX 1.666 1.700 1.734 BL8509-180XXXX 1.764 1.800 1.836 BL8509-190XXXX 1.862 1.900 1.938 BL8509-200XXXX 1.960 2.000 2.040 BL8509-210XXXX 2.058 2.100 2.142 BL8509-220XXXX 2.156 2.200 2.244 BL8509-230XXXX 2.254 2.300 2.346 BL8509-240XXXX 2.352 2.400 2.448 BL8509-250XXXX 2.450 2.500 2.550 BL8509-260XXXX 2.548 2.600 2.652 BL8509-270XXXX 2.646 2.700 2.754 BL8509-280XXXX 2.744 2.800 2.856 BL8509-290XXXX 2.842 2.900 2.958 BL8509-300XXXX 2.940 3.000 3.060 BL8509-310XXXX 3.038 3.100 3.162 BL8509-320XXXX 3.136 3.200 3.264 BL8509-330XXXX 3.234 3.300 3.366 BL8509-340XXXX 3.332 3.400 3.468 BL8509-350XXXX 3.430 3.500 3.570 BL8509-360XXXX 3.528 3.600 3.672 BL8509-370XXXX 3.626 3.700 3.774 BL8509-380XXXX 3.724 3.800 3.876 BL8509-390XXXX 3.822 3.900 3.978 BL8509-400XXXX 3.920 4.000 4.080 BL8509-410XXXX 4.018 4.100 4.182 BL8509-420XXXX 4.116 4.200 4.284 BL8509-430XXXX 4.214 4.300 4.386 BL8509-440XXXX 4.312 4.400 4.488 BL8509-450XXXX 4.410 4.500 4.590 BL8509-460XXXX 4.508 4.600 4.692 BL8509-470XXXX 4.606 4.700 4.794 BL8509-480XXXX 4.704 4.800 4.896 BL8509-490XXXX 4.802 4.900 4.998 BL8509-500XXXX 4.900 5.000 5.100 BL8509-510XXXX 4.998 5.100 5.202 BL8509-520XXXX 5.096 5.200 5.304 BL8509-530XXXX 5.194 5.300 5.406 BL8509-540XXXX 5.292 5.400 5.508 BL8509-550XXXX 5.390 5.500 5.610 BL8509-560XXXX 5.488 5.600 5.712 BL8509-570XXXX 5.586 5.700 5.814 BL8509-580XXXX 5.684 5.800 5.916 BL8509-590XXXX 5.782 5.900 6.018 BL8509-600XXXX 5.880 6.000 6.120 http://www.belling.com.cn Condition Vdd= (-Vdet) +0.1V Typ. 0.5 - 6Total 17 Pages Supply Current2 Iss2[uA] Max. 1.0 Condition Typ. Max. 1.0 1.5 0.5 1.0 Vdd= (-Vdet) +2V 8/8/2006 BL8509 Output Current1 Output Current2 Iout1[mA] Condition Min. Typ. Condition Iout2[mA] Min. Vdd=0.8 0.1 5V Vdd=1.0V NCH, VDS=0.05V NCH, 0.01 0.05 , VDS=0.5V VDD=0.7V VDD=1.5V 0.2 Typ. Minimum Detector Threshold Operating Voltage Temperature Coefficient VDDL[V] -VDET/ Tppm/°C Typ. Max. Condition Typ. 0.5 1.0 0.5 1.0 0.7 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 http://www.belling.com.cn Test Condition VDD=1.0V to Vdet+1.0V - 7Total 17 Pages 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 ms 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 Supply Voltage Minimum Operating Voltage Output Voltage (OUT) No. Tdelay I II III Operation status VDD>Vdet VDD drops below Vdet VDD drops further below Output status Output voltage is equal to the supply voltage Output voltage equals to GND level Output voltage is undefined IV V VDDL VDD rises above VDDL VDD rises above Vdet 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 Detector threshold=2.7V 1.E-05 Supply current (A) Supply current(A) 1.E-05 1.E-06 -40ºC 1.E-07 25ºC 70ºC 1.E-06 -40ºC 1.E-07 25ºC 70ºC 1.E-08 1.E-08 0 1 2 3 4 5 6 0 2 3 4 Input voltage (V) Input voltage (V) Detector threshold=3.0V Detector threshold=4.4V 5 6 1.E-05 Supply current (A) 1.E-05 Supply current(A) 1 1.E-06 -40ºC 1.E-07 25ºC 1.E-06 1.E-07 -40ºC 25ºC 70ºC 70ºC 1.E-08 1.E-08 0 1 2 3 4 5 6 0 Input voltage (V) http://www.belling.com.cn 1 2 3 4 5 6 Input voltage (V) - 11Total 17 Pages 8/8/2006 BL8509 2) Detector Threshold VS. Temperature Detector threshold=2.7V 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.85 2.78 Detector threshold(V) Detector threshold (V) Detector threshold= 0.9V 2.74 2.70 2.66 2.62 2.58 2.54 -50 -30 -10 10 30 50 70 90 -50 -30 -10 Temperature (°C) 30 50 70 90 50 70 90 Detector threshold=4.4V Detector threshold=3.0V 4.50 3.04 4.48 3.02 Detector threshold(V) Detector threshold(V) 10 Temperature(°C) 3.00 2.98 2.96 2.94 2.92 4.46 4.44 4.42 4.40 4.38 4.36 4.34 4.32 2.90 -50 -30 -10 10 30 50 70 90 4.30 -50 Temperature(°C) -30 -10 10 30 Temperature(°C) http://www.belling.com.cn - 12Total 17 Pages 8/8/2006 BL8509 3 Nch Driver Output Current VS. VDS BL8509-090xxx BL8509-270xxx 8.00E-04 1.20E-02 1.00E-02 Output current A) Output current A) 7.00E-04 6.00E-04 5.00E-04 4.00E-04 3.00E-04 2.00E-04 VDD=0.7V VDD=0.8V 1.00E-04 0.00E+00 0.00 0.20 0.40 0.60 8.00E-03 6.00E-03 4.00E-03 VDD=1.0V VDD=2.0V 2.00E-03 0.00E+00 0.00 0.80 0.50 VDS (V) 2.00 2.50 BL8509-440xxx 1.20E-02 2.50E-02 Output current A) 1.00E-02 Output current A) 1.50 VDS (V) BL8509-300xxx 8.00E-03 6.00E-03 4.00E-03 VDD=1.0V VDD=2.0V 2.00E-03 0.00E+00 0.00 1.00 0.50 1.00 1.50 2.00 2.50 VDS (V) http://www.belling.com.cn 2.00E-02 1.50E-02 1.00E-02 VDD=1.0V VDD=2.0V VDD=3.0V 5.00E-03 0.00E+00 0.00 1.00 2.00 3.00 VDS (V) - 13Total 17 Pages 8/8/2006 4.00 BL8509 4 NCH Driver Output Current vs. Input Voltage Detector threshold=2.7V 1.E-02 -40ºC Output Current Iout (A) Output Current Iout (A) 1.E-02 Detector threshold=3.0V 25ºC 75ºC 8.E-03 4.E-03 -40ºC 25ºC 75ºC 8.E-03 4.E-03 0.E+00 0.E+00 0 1 2 3 0 1 Input Voltage Vin (V) 5 3 PCH Driver Output Current vs. Input Current Detector threshold=2.7V Detector threshold=0.9V 8.0 20.0 VDS=0.5V VDS=0.7V 6.0 Output Current Iout mA Output Current Iout(mA) 2 Input Voltage Vin (V) 4.0 2.0 VDS=0.5V VDS=1.0V VDS=1.5V VDS=2.0V 15.0 10.0 0.0 5.0 0.0 0 2 4 6 Input Voltage Vin 8 0 V 1 2 3 4 Input Voltage Vin 5 6 V Detector threshold=4.4V Output Current Iout mA 25.0 VDS=0.5V VDS=1.0V VDS=1.5V VDS=2.0V 20.0 15.0 10.0 5.0 0.0 0 2 4 6 Input Voltage Vin http://www.belling.com.cn 8 10 V - 14Total 17 Pages 8/8/2006 7 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