Voltage Detector VDL70XX Series Voltage Detector General Description • The VDL70xx series ICs are under voltage detectors with a built in voltage Threshold and now power consumption. The VDL70xx are specifically designed to accurately monitor power supplies. • The VDL70xx 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/4.5V for VDL7023/25/27/29/31/33/42/45 respectively. Built in hysteresis helps to prevent erratic operation in the presence of noise. • The VDL70xx series are available in standard packages: TO-92(bulk or ammo packing) and SOT-89. TO-92(bulk) TO-92(ammo) Features • Low current consumption: ICCL=300uA typical ICCH=30uA typical • Low minimum operating voltage for output resetting :0.8V typical • Built in hysteresis voltage: 50mA typical • Open collector output • Extended temperature range: -40 to 85°C SOT-89 • RoHS compliant Applications • • • • • Low battery voltage detector Power fail indicator Processor reset generator Battery backup control Home electric appliances TAITRON COMPONENTS INCORPORATED www.taitroncomponents.com Tel: Fax: (800)-TAITRON (800)-824-8766 (800)-TAITFAX (800)-824-8329 (661)-257-6060 (661)-257-6415 Rev. A/JH Page 1 of 12 Voltage Detector VDL70XX Series Ordering Information VDL70 □□ □- 08 - □□□□ Circuit Type 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 Packing Code BL: Bulk, RoHS AR Ammo, RoHS TR30: 13” Reel, RoHS Factory Location Code Package Code Z: TO-92 K: SOT-89 Pin Configuration 1: VCC 2: GND 3: OUT TO-92(bulk) 1: VCC 2: GND 3: OUT TO-92(ammo) 1: VCC 2: GND 3: OUT SOT-89 Rev. A/JH www.taitroncomponents.com Page 2 of 12 Voltage Detector VDL70XX Series Block Diagram Absolute Maximum Ratings (Note 1) Symbol Description VCC Supply Voltage PD Power Dissipation (package limitations, TA=25°C) TJ Operating Junction Temperature TSTG Ratings Unit -0.3 ~ 20 V TO-92 400 SOT-89 500 Storage Temperature Range mW 150 °C -65 ~ 150 °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 “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended period may affect device reliability. Recommended Operating Conditions Symbol VCC TA Description Supply Voltage Operating Temperature Range Min. Max. Unit - 18 V -40 85 °C Rev. A/JH www.taitroncomponents.com Page 3 of 12 Voltage Detector VDL70XX Series Electrical Characteristics (Unless otherwise specified, TA=25°C) Symbol VDET Description Detect Voltage Min. Typ. Max. Unit 2.15 2.3 2.45 VDL7023 2.35 2.5 2.65 VDL7025 2.55 2.7 2.85 VDL7027 2.75 2.9 3.05 2.95 3.1 3.25 3.15 3.3 3.45 VDL7033 4.05 4.2 4.35 VDL7042 4.35 4.5 4.65 VDL7045 V Conditions VDL7029 VDL7031 RL=200Ω(Note 2) VOL≤0.4V VOL Low-level Output Voltage - - 0.4 V VCC= VDET(min) -0.05V RL=200Ω(Note 2) IOH Output Leakage Current - - 0.1 uA VCC=15V VHYS Hysteresis Voltage 30 50 100 mV RL=200Ω(Note 2) ∆VDET/ Detect Voltage Temp. Coefficient - ±0.01 - %/°C RL=200Ω(Note 2) ICCL Circuit Current at On Time - 300 500 uA VCC= VDET(min) -0.05V ICCH Circuit Current at Off Time - 30 50 uA VCC=5.25V VOPR Minimum Operating Voltage - 0.8 - V RL=200Ω(Note 2) VOL≤0.4V tpHL “L” Transmission Delay Time - 10 - uS VCC changed from 5.25V to VDET(min) -0.05V, RL=1.0KΩ, CL=100pF(Note 3) tpLH “H” Transmission Delay Time - 15 - uS VCC changed from VDET(min) 0.05V to 5.25V, RL=1.0KΩ, CL=100pF(Note 3) 20 - - (∆VDETx∆T) IOL I IOL II Output Current at On Time mA 16 - - VCC= VDET(min) -0.05V TA=25°C(Note 4) VCC= VDET(min) -0.05V TA=-40 to 85°C(Note 4) Note: 2. See test circuit 1 and Figure 6. 3. See test circuit 2 and Figure 6. 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”. Rev. A/JH www.taitroncomponents.com Page 4 of 12 Voltage Detector VDL70XX Series Test Circuits • Test Circuit 1 • Test Circuit 2 • Test Circuit 3 Rev. A/JH www.taitroncomponents.com Page 5 of 12 Voltage Detector VDL70XX Series Typical Characteristics Curves (Take VDL7029 for example) Fig.2- Minimum Operating Voltage vs. Temperature Detect Voltage (V) Minimum Operating Voltage (mV) Fig.1- Detect Voltage vs. Temperature Temperature (°C) Temperature (°C) Fig.4- Low-level Output Voltage vs. Temperature Low-level Output Voltage (mV) Output Current at On Time (mA) Fig.3- Output Current at On Time vs. Temperature Temperature (°C) Temperature (°C) Rev. A/JH www.taitroncomponents.com Page 6 of 12 Voltage Detector VDL70XX Series VO (V) VCC (V) Fig.5- Output Voltage Dynamic Response when VCC Increases and Decreases Time (S) Operating Diagram Figure 6 is a typical timing waveform for VDL70XX. In normal steady-state operation when VCC>VDET-, the output will be in a logic high state and VOUT is dependent upon the voltage that the pull-up resistor connected to. Here are some explanations for VDL70XX’s operation. 1. When the input voltage VCC falls below VDET-, the output will pull down to logic low after a delay time of tpHL. 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). The voltage level VDET- means the detect voltage. 2. The output, VOUT, will stay valid until VCC falls below the minimum operating voltage, VOPR (0.8V typ.). Below minimum operating voltage, the output is undefined. 3. During power-up, VOUT will remain undefined until VCC rises above VOPR, at which time the output will become valid. VOUT will be in its active low state while VOPR<VCC<VDET+ (VDET+=VDET-+VHYS). VDET+ is the release voltage. VHYS means the hysteresis voltage and is the difference voltage between the VDET+ and VDET-. 4. When VCC rises above VDET+, the output will be in its inactive state. After a delay time of tpLH, VOUT will be in its logic high state. Rev. A/JH www.taitroncomponents.com Page 7 of 12 Voltage Detector VDL70XX Series Fig.6- VDL70XX Timing Waveform (Note 5) Note: 5. Detect voltage: VDET-; Release voltage: VDET+; Hysteresis voltage (VHYS): VDET+-VDET-; Minimum operating voltage: VOPR. Typical Applications • Low Voltage Indicator • CPU Resetting Circuit Rev. A/JH www.taitroncomponents.com Page 8 of 12 Voltage Detector VDL70XX Series Dimensions in mm (inch) • TO-92 (bulk) Rev. A/JH www.taitroncomponents.com Page 9 of 12 Voltage Detector VDL70XX Series • TO-92 (ammo) Rev. A/JH www.taitroncomponents.com Page 10 of 12 Voltage Detector VDL70XX Series • SOT-89 Rev. A/JH www.taitroncomponents.com Page 11 of 12 Voltage Detector VDL70XX Series Packing information Package TO-92 SOT-89 Min. Packing Inner Box Packing Carton Packing Packing Type Qty. Dimensions(mm) Qty. Dimensions(mm) Qty. Dimensions(mm) Bulk 1K 190x130 10K 236x170x96 100K 524x352x256 Ammo 2K - 2K 326x184x40 20K 442x390x258 T&R 1K 178x178x18 4K 204x202x110 16K 435x225x255 How to contact us: US HEADQUARTERS 28040 WEST HARRISON PARKAWAY, VALENCIA, CA 91355-4162 Tel: (800) TAITRON (800) 824-8766 (661) 257-6060 Fax: (800) TAITFAX (800) 824-8329 (661) 257-6415 Email: [email protected] Http://www.taitroncomponents.com TAITRON COMPONENTS MEXICO, S.A .DE C.V. BOULEVARD CENTRAL 5000 INTERIOR 5 PARQUE INDUSTRIAL ATITALAQUIA, HIDALGO C.P. 42970 MEXICO Tel: +52-55-5560-1519 Fax: +52-55-5560-2190 TAITRON COMPONETS INCORPORATED E REPRESENTAÇÕES DO BRASIL LTDA RUA DOMINGOS DE MORAIS, 2777, 2.ANDAR, SALA 24 SAÚDE - SÃO PAULO-SP 04035-001 BRAZIL Tel: +55-11-5574-7949 Fax: +55-11-5572-0052 TAITRON COMPONETS INCORPORATED, SHANGHAI REPRESENTATIVE OFFICE METROBANK PLAZA, 1160 WEST YAN’ AN ROAD, SUITE 1503, SHANGHAI, 200052, CHINA Tel: +86-21-5424-9942 Fax: +86-21-5424-9931 Rev. A/JH www.taitroncomponents.com Page 12 of 12