BL8509D Low Voltage Detector with Built-in Delay Circuit Features： ： Outline: BL8509D is a series of high precision voltage detector with ultra low current consumption (500nA typ. at VDD=VTH+1V) and a built-in delay circuit. It can work at very low voltage, which makes it perfect for system reset. BL8509D 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. • • • • • • High-precision detection Voltage： ±2% Detection Voltage：1.6V~5.0V (in 0.1V steps) Built-in Power on Reset Delay Time circuit:: Refer to Selection Guide Operating Voltage range：1.0V~6.0V Ultra-low current consumption：0.9uA typ. (at VDD=3V) Two Output forms ：CMOS and N-channel opendrain (Active Low) Two type of output, CMOS and N-channel open-drain are available. Application： ： BL8509D is available in SOT-23,SOT-233,SOT-23-5 which is Pb free. • • • • http://www.belling.com.cn • - 1Total 16 Pages 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 1/1/2013 BL8509D Pin Alignment： ： Selection Guide： ： B 8509D- XXX X X XX Package type： RM：SOT-23-3 RN：SOT-23-5 RO：SOT-23 Output type： N：Nch C：CMOS Delay time： A：50mS B：100mS C：150mS D：200mS E：250mS F：300mS G：400mS Product Mark Information： ： SOT-23 SOT-23-3 SOT-23-5 Example： BL8509D-293DCRM Detector voltage： 090……0.9V 100……1.0V 263……2.63V 300……3.0V 465……4.65V …… 600……6.0V (In 0.1V step) BL8509D-263DNRN I2YW H1YW YW：Data Code Pin Description: PIN Number PIN Name Function VSS GND Pin 1 VOUT Voltage detection output Pin 3 2 VDD Voltage input Pin - - 4 NC No connection - - 5 NC No connection SOT-23 1 SOT-23-3 1 SOT-23-5 3 2 2 3 http://www.belling.com.cn - 2Total 11 Pages 1/1/2013 BL8509D Block diagram: CMOS output N channel open-drain Absolute Maximum Ratings： ： PARAMETER SYMBOL RATING UNIT Supply Voltage VDDmax 7 V Output RST,RST Voltage GND-0.3 ～VDDmax+0.3 (CMOS Type) V GND-0.3 ～7 ( Open Drain Type) Input IDD 20 mA Current IOUT 20 mA Dissipation PD 150 (Not attached PCB) mW Operating Temperature Topr -40 ～ +105 ℃ Storage Temperature Tstg -65 ～ +150 ℃ Output Power Current Recommended Work Conditions： ： PARAMETER Operating Temperature http://www.belling.com.cn SYMBOL Topr RATING -40 ～ - 3Total 11 Pages +105 UNIT ℃ 1/1/2013 BL8509D Electrical Characteristics： ： Parameter Symbol Operating voltage VDD Supply Current IDD Test Condition MIN. TYP. MAX. Ta=0 to 70℃ 1.0 - 6.0 Ta=-40 to 105℃ 1.1 - 6.0 VDD=VTH+1V － 0.5 2.0 Ta=25℃ 4.584 4.630 4.676 VTH=4.63V VTH=4.38V VTH=3.08V Reset Threshold VTH VTH=2.93V VTH=2.63V VTH=1.6～ 5.0V (0.1V step) Reset Threshold Temp. Coefficient RST output voltage Low (active L type) RST output voltage High (active L type) RST output voltage low (active H type) RST output voltage High (active H type) Ta=-40 to 85℃ 4.500 - 4.750 Ta=85 to 105℃ 4.400 - 4.860 Ta=25℃ 4.336 4.380 4.424 Ta=-40 to 85℃ 4.250 - 4.500 Ta=85 to 105℃ 4.160 - 4.560 Ta=25℃ 3.049 3.080 3.111 Ta=-40 to 85℃ 3.000 - 3.150 Ta=85 to 105℃ 2.920 - 3.230 Ta=25℃ 2.901 2.930 2.959 Ta=-40 to 85℃ 2.850 - 3.000 Ta=85 to 105℃ 2.780 - 3.080 Ta=25℃ 2.604 2.630 2.656 Ta=-40 to 85℃ 2.550 - 2.700 Ta=85 to 105℃ 2.500 - 2.760 Ta=25℃ -1.0 - 1.0 Ta=-40 to 85℃ -2.5 - 2.5 Ta=85 to 105℃ -5.0 - 5.0 － 30 － － － 0.3 VTH/⊿T VDD=VTH-0.1V, Isink=1.2mA VTH≦3.08V VOL VOL Circuit V ① µA ② V ① % ppm/℃ ① V VDD=VTH-0.1V, Isink=3.2mA VTH＞3.08V VOH Unit － － 0.4 VDD=VTH+1V Isink=500µA VTH≦3.08V 0.8*VDD － － VDD=VTH+1V, Isink=800µA VTH＞3.08V VDD-1.5 VDD=VTH+1V, Isink=1.2mA VTH≦3.08V － － 0.3 VDD=VTH+1V, Isink=3.2mA VTH＞3.08V － － 0.4 VDD=VTH-0.1V Isink=500µA VTH≦3.08V 0.8*VDD － － V － － ③ V VOH V VDD=VTH-0.1V, Isink=800µA VTH＞3.08V VDD-1.5 － － (Note1)This device is tested at Ta=25℃, over temperature limits guaranteed by design only. (Note2)The parameter is guaranteed by design. http://www.belling.com.cn - 4Total 11 Pages 1/1/2013 BL8509D Parameter Symbol Tdel Rank A B Reset active timeout period tdel C D E VDD to Reset Delay tTH MIN. TYP. MAX. Unit Circuit Ta=-40 to 85℃ 140 240 310 Ta=85 to 105℃ 100 - 840 Ta=-40 to 85℃ 35 50 65 Ta=85 to 105℃ 25 - 98 Ta=-40 to 85℃ 70 100 130 Ta=85 to 105℃ 49 - 195 ms ④ Ta=-40 to 85℃ 140 200 260 Ta=85 to 105℃ 98 - 390 Ta=-40 to 85℃ 280 400 520 Ta=85 to 105℃ VDD=（VTH+1V） to (VTH-100mV) 196 - 780 － 20 － µs ④ － － 0.1 µA ⑤ (Note2) Output Leakage Current (active L,open drain type) ILEAK VDD=VRST=7V (Note1) This device is tested at Ta=25℃, over temperature limits guaranteed by design only . (Note2) The parameter is guaranteed by design. Test Circuit： ： http://www.belling.com.cn - 5Total 11 Pages 1/1/2013 BL8509D Timing Chart： ： VDD＜1V region is, it will be operating limits, The output is undefined. http://www.belling.com.cn - 6Total 11 Pages 1/1/2013 BL8509D VDD＜1V region is, it will be operating limits, The output is undefined. 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 - 7Total 11 Pages 1/1/2013 BL8509D 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 - 8Total 11 Pages 1/1/2013 BL8509D Typical Performance Characteristics： ： 1) Supply current VS. Input voltage DETECTING VOLTAGE SUPPLY CURRENT 4.0 2.0 Supply Current(μA) Output Voltage(V) 3.5 3.0 2.5 2.0 1.5 1.0 1.5 1.0 0.5 0.5 0.0 0.0 0 0 0.5 1 1.5 2 2.5 3 Input Voltage(V) 3.5 1 2 4 DETECTING VOLTAGE VS TEMPERATURE 3 4 Input Voltage(V) 5 6 7 SUPPLY CURRENT VS TEMPERATURE 2.98 2.0 Detecting Voltage(V) 2.97 SUPPLY CURRENT 2.96 2.95 2.94 2.93 2.92 2.91 2.90 1.5 1.0 0.5 2.89 0.0 2.88 -40 -20 0 20 40 60 80 -40 100 -20 0 TEMPERATURE（℃） 20 40 60 80 100 Temperature（℃） RESET ACTIVE TIMEOUT PERIOD VS TEMPERATURE VDD TO RESET DELAY VS TEMPERATURE VS TEMPERATURE 300 Reset Active Timeout Period (ms) 280 260 VDD TO RESET DELAY VS TEMPERATURE (ms) 20 15 240 220 10 200 180 5 160 140 0 -40 -20 0 20 40 60 80 100 Temperature（℃） http://www.belling.com.cn -40 -20 0 20 40 60 80 Temperature（℃） - 9Total 11 Pages 1/1/2013 100 BL8509D "L"OUTPUT VOLTAGE VS TEMPERATURE (active L) "H"OUTPUT VOLTAGE VS TEMPERATURE (active L) 4.1 "H"OUTPUT VOLTAGE (V) "L"OUTPUT VOLTAGE(V) 0.4 4.0 0.3 3.9 0.2 0.1 3.8 0.0 -40 -20 0 20 40 60 80 100 3.7 -40 Temperature（℃） -20 0 20 40 60 80 Temperature（℃） Typical applications： ： Open drain OUTPUT CMOS OUTPUT Note： Please note that there is any possibility of circuit oscillation when resistance put in the line VIN. Load current and load resistance should be adjusted, which not over power dissipation level. We shall not be liable for any trouble or damage caused by using this circuit . In the event a problem which may affect industrial property or any other rights of us or a third party is encountered during the use of information described in these circuit, Mitsumi Electric Co., Ltd. shall not be liable for any such problem, nor grant a license therefore. http://www.belling.com.cn - 10Total 11 Pages 1/1/2013 100 BL8509D Package Outline： ： SOT-23: Package SOT23 Devices per reel 3000 Unit mm Devices per reel 3000 Unit mm Package dimension： SOT-23-3: Package SOT-23-3 Package dimension： http://www.belling.com.cn - 11Total 11 Pages 1/1/2013 BL8509D SOT-23-5: Package SOT-23-5 Devices per reel 3000 Unit mm Package dimension： http://www.belling.com.cn - 12Total 11 Pages 1/1/2013