Preliminary Datasheet VOLTAGE DETECTOR AZ70XX AZ70XX General Description Features The AZ70XX series ICs are under voltage detectors with a built in voltage threshold and low power consumption. The AZ70XX are specifically designed to accurately monitor power supplies. · The AZ70XX use a precision on-chip voltage reference and a comparator to measure the input operating voltage. These ICs can accurately reset the system after detecting voltage at the time of switching power on and instantaneous power off in various CPU systems and other logic systems. The detect voltage thresholds are 2.3V/2.5V/2.7V/2.9V/3.1V/3.3V/4.2V/4.5Vfor AZ7023/25/27/29/31/33/42/45 respectively. Built in hysteresis helps to prevent erratic operation in the presence of noise. · · · · Low Current Consumption: ICCL=300µA Typical ICCH=30µA Typical Low Minimum Operating Voltage for Output Resetting: 0.8V Typical Built in Hysteresis Voltage: 50mV Typical Open Collector Output Extended Temperature Range: -40 to 85oC Applications · · · · · The AZ70XX series are available in 2 standard packages: TO-92 and SOT-89-3. Low Battery Voltage Detector Power Fail Indicator Processor Reset Generator Battery Backup Control Home Electric Appliances SOT-89-3 TO-92 Figure 1. Package Types of AZ70XX BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 1 Preliminary Datasheet VOLTAGE DETECTOR AZ70XX AZ70XX Pin Configuration Z Package (TO-92) 3 OUT 2 GND 1 VCC R Package (SOT-89-3) 1 VCC 2 3 GND OUT Figure 2. Pin Configuration of AZ70XX (Top View) Functional Block Diagram VCC OUT + - GND Figure 3. Functional Block Diagram of AZ70XX BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 2 Preliminary Datasheet VOLTAGE DETECTOR Ordering Information AZ70XX AZ70XX - AZ70 Package Circuit Type E1: Lead Free Blank: Tin Lead Detect Voltage 23: 2.3V 31: 3.1V 25: 2.5V 33: 3.3V 27: 2.7V 42: 4.2V 29: 2.9V 45: 4.5V TR: Tape and Reel or Ammo Blank: Bulk Package Z: TO-92 R: SOT-89-3 Temperature Range Detector Voltage 2.3V 2.5V 2.7V 2.9V TO-92 -40 to 85oC 3.1V 3.3V 4.2V -40 to 85oC Marking ID Packing Type Lead Free Tin Lead Lead Free AZ7023Z AZ7023Z-E1 AZ7023Z AZ7023Z-E1 Bulk AZ7023ZTR AZ7023ZTR-E1 AZ7023Z AZ7023Z-E1 Ammo AZ7025Z AZ7025Z-E1 AZ7025Z AZ7025Z-E1 Bulk AZ7025ZTR AZ7025ZTR-E1 AZ7025Z AZ7025Z-E1 Ammo AZ7027Z AZ7027Z-E1 AZ7027Z AZ7027Z-E1 Bulk AZ7027ZTR AZ7027ZTR-E1 AZ7027Z AZ7027Z-E1 Ammo AZ7029Z AZ7029Z-E1 AZ7029Z AZ7029Z-E1 Bulk AZ7029ZTR AZ7029ZTR-E1 AZ7029Z AZ7029Z-E1 Ammo AZ7031Z AZ7031Z-E1 AZ7031Z AZ7031Z-E1 Bulk AZ7031ZTR AZ7031ZTR-E1 AZ7031Z AZ7031Z-E1 Ammo AZ7033Z AZ7033Z-E1 AZ7033Z AZ7033Z-E1 Bulk AZ7033ZTR AZ7033ZTR-E1 AZ7033Z AZ7033Z-E1 Ammo AZ7042Z AZ7042Z-E1 AZ7042Z AZ7042Z-E1 Bulk AZ7042ZTR AZ7042ZTR-E1 AZ7042Z AZ7042Z-E1 Ammo AZ7045Z AZ7045Z-E1 AZ7045Z AZ7045Z-E1 Bulk AZ7045ZTR AZ7045ZTR-E1 AZ7045Z AZ7045Z-E1 Ammo 2.3V AZ7023RTR AZ7023RTR-E1 7023R E723 Tape & Reel 2.5V AZ7025RTR AZ7025RTR-E1 7025R E725 Tape & Reel 2.7V AZ7027RTR AZ7027RTR-E1 7027R E727 Tape & Reel 2.9V AZ7029RTR AZ7029RTR-E1 7029R E729 Tape & Reel 3.1V AZ7031RTR AZ7031RTR-E1 7031R E731 Tape & Reel 3.3V AZ7033RTR AZ7033RTR-E1 7033R E733 Tape & Reel 4.2V AZ7042RTR AZ7042RTR-E1 7042R E742 Tape & Reel 4.5V AZ7045RTR AZ7045RTR-E1 7045R E745 Tape & Reel 4.5V SOT-89-3 Part Number Tin Lead BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 3 Preliminary Datasheet VOLTAGE DETECTOR AZ70XX AZ70XX Absolute Maximum Ratings (Note 1) Parameter Supply Voltage Power Dissipation (Package Limitations) Symbol Min Max Unit VCC -0.3 18 V TO-92 Package: 500 PD SOT-89-3 Package: 400 mW 150 o ESD 500 V ESD 5000 V Storage Temperature Range TSTG ESD (Machine Model) ESD (Human Body Mode) -65 C Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under"Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Supply Voltage Operating Temperature Range Symbol Min VCC TOPR -40 Max Unit 15 V 85 oC BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 4 Preliminary Datasheet VOLTAGE DETECTOR AZ70XX AZ70XX Electrical Characteristics Operating Conditions: TA=25oC unless otherwise specified. Parameter Detecting Voltage Symbol VS Conditions RL=200Ω (Note 2) VOL ≤ 0.4V Min Typ Max AZ7023R/Z 2.15 2.3 2.45 AZ7025R/Z 2.35 2.5 2.65 AZ7027R/Z 2.55 2.7 2.85 AZ7029R/Z 2.75 2.9 3.05 AZ7031R/Z 2.95 3.1 3.25 AZ7033R/Z 3.15 3.3 3.45 AZ7042R/Z 4.05 4.2 4.35 AZ7045R/Z 4.35 4.5 4.65 Unit V Low-Level Output Voltage VOL VCC=VS(min)-0.05V RL=200Ω (Note 2) 0.4 V Output Leakage Current IOH VCC=15V 0.1 µA 100 mV Hysteresis Voltage Detect Voltage Temperature Coefficient VHYS RL=200Ω (Note 2) 30 ∆VS/(VS × ∆T) RL=200Ω (Note 2) 50 ±0.01 % / oC Circuit Current at On Time ICCL VCC=VS(min)-0.05V 300 500 µA Circuit Current at Off Time ICCH VCC=5.25V 30 50 µA Minimum Operating Voltage VOPR RL=200Ω (Note 2) VOL ≤ 0.4V “L”Transmission Delay Time tpHL VCC changed from 5.25V to VS(min)-0.05V, RL=1.0KΩ, CL=100p (Note 3) “H”Transmission Delay Time tpLH VCC changed from VS(min)0.05V to 5.25V, RL=1.0KΩ, CL=100p (Note 3) IOL Ⅰ 0.8 V 10 µs 15 µs VCC=VS(min)-0.05V 20 TA=25oC (Note 4) Output Current at On Time mA IOL Ⅱ VCC=VS(min)-0.05V TA=-40 to 85 oC (Note 4) 16 Note 2: See test circuit 1 and Figure 12. Note 3: See test circuit 2 and Figure 12. Note 4: See test circuit 3. Adjusting the regulative power source until the reading value of voltage meter V is 0.4V, the reading value of current meter A is defined as "Output Current at On Time". BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 5 Preliminary Datasheet VOLTAGE DETECTOR AZ70XX AZ70XX Electrical Characteristics (Continued) A1 A2 1 RL VCC AZ7029 V1 3 OUT + GND 10µF 2 V2 Figure 4. Test Circuit 1 RL 1 VCC Input Pulse AZ7029 + OUT +5V 10µF 3 GND CL 2 Figure 5. Test Circuit 2 1 V S(min)-0.05V V CC + 10µF AZ7029 OUT GND 2 3 A V Figure 6. Test Circuit 3 BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 6 Preliminary Datasheet VOLTAGE DETECTOR AZ70XX AZ70XX Typical Performance Characteristics 1200 2.95 1100 Minimum Operating Voltage (mV) AZ7029 Detecting Voltage (V) 2.90 VS (VCC Rising) 2.85 VS-VHYS (VCC Falling) 2.80 2.75 -40 -20 0 20 40 60 1000 AZ7029 900 800 700 600 500 400 -40 80 -20 0 40 60 80 Temperature ( C) Figure 7. Detecting Voltage vs. Temperature Figure 8. Minimum Operating Voltage vs. Temperature 70 100 Low-level Output Voltage (mV) Output Current at on time (mA) 20 O O Temperature ( C) 60 50 AZ7029 40 30 75 AZ7029 50 25 20 10 -40 -20 0 20 40 60 0 -40 80 O -20 0 20 40 60 80 O Temperature ( C) Temperature ( C) Figure 9. Output Current at on Time vs. Temperature Figure 10. Low-level Output Voltage vs. Temperature BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 7 Preliminary Datasheet VOLTAGE DETECTOR AZ70XX AZ70XX Typical Performance Characteristics (Continued) Time (s) Figure 11. Output Voltage Dynamic Response when VCC Increases and Decreases Operating Diagram VCC VS VS -VHYS VOUT tpLH tpHL tpLH Figure 12. AZ70XX Timing Waveform BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 8 Preliminary Datasheet VOLTAGE DETECTOR AZ70XX Operating Diagram (Continued) AZ70XX Figure 12 is a typical timing waveform for AZ70XX during power-up and temporary power-down period. Here is some explanations for AZ70XX's operation. 3. During power-down, after a delay time of tpHL from the moment VCC<VS-VHYS, VOUT will be at its logic low state. In general, at rated output current and VCC, VOUT can be pulled down to a voltage as low as within 0.4V from GND. (See the Electrical Characteristics section). 1. During power-up period, VOUT will remain undefined until VCC rises above VOPR (typically 0.8V). After that moment, the output will become valid and will be at its logic low state while VOPR<VCC<VS for power-up operating. 4. VOUT will be at its logic low state while VSVHYS>VCC>VOPR for power-down operating. 2. After a delay time of tpLH from the moment VCC>VS, the VOUT will be at its logic high state. In general, VOUT is dependent upon the voltage that the pull up resistor connected to. 5. After VCC falls below VOPR, the output is undefined. Typical Applications VCC +5V VCC R1 220 1 1 VCC AZ70XX VCC OUT GND R1 3.3k 3 AZ70XX VCC OUT 3 + GND LED 2 2 Figure 13. Low Voltage Indicator RESET CPU GND C1 1 µF Figure 14. CPU Resetting Circuit BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 9 Preliminary Datasheet VOLTAGE DETECTOR AZ70XX AZ70XX Mechanical Dimensions TO-92 Unit: mm(inch) 1.100(0.043) 3.430(0.135) MIN 3.700(0.146) 3.300(0.130) 1.400(0.055) 0.360(0.014) 0.510(0.020) 0.000(0.000) 0.380(0.015) Φ1.600(0.063) MAX 4.700(0.185) 0.380(0.015) 0.550(0.022) 14.100(0.555) 14.500(0.571) 4.300(0.169) 4.400(0.173) 4.700(0.185) 1.270(0.050) TYP 2.440(0.096) 2.640(0.104) BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 10 Preliminary Datasheet VOLTAGE DETECTOR AZ70XX AZ70XX Mechanical Dimensions (Continued) SOT-89-3 Unit: mm(inch) 4.400(0.173) 4.600(0.181) 1.630(0.064) 1.400(0.055) 1.600(0.063) 1.830(0.072) 0.000(0.000) 0.076(0.003) 1.400(0.055)* 1.200(0.047) 0.900(0.035) 3.950(0.156) 4.250(0.167) R0.200(0.008) 2.300(0.091) 2.600(0.102) 3° 10° 0.360(0.014) 0.360(0.014) 0.360(0.014) 0.480(0.019) 0.480(0.019) 0.440(0.017) 0.440(0.017) 3.000(0.118) 0.560(0.022) 3° 10° R0.150(0.006) BCD Semiconductor Manufacturing Limited Jul. 2005 Rev. 1. 3 11 http://www.bcdsemi.com BCD Semiconductor Corporation 3170 De La Cruz Blvd, Suite # 105 Santa Clara, CA 95054-2411, U.S.A Tel: +1-408-988 6388, Fax: +1-408-988 6386 Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. 800 Yi Shan Road, Shanghai 200233, PRC Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 Advanced Analog Circuits (Shanghai) Corporation 8F, B Zone, 900 Yi Shan Road, Shanghai 200233, PRC Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 BCD Semiconductor (Taiwan) Company Limited 4F, 298-1 Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656-2808, Fax: +886-2-2656-2806 IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.