TS61 Series Voltage Detector SOT-23 Pin Definition: 1. Output 2. Ground 3. Input General Description The TS61 series are highly precise, low power consumption voltage detectors, manufactured using CMOS and laser trimming technologies. Detect voltage is extremely accurate with minimal temperature drift. Both CMOS and N-channel open drain output configurations are available. Features Ordering Information ● Highly Accurate: ±2% ● Detecting Voltage Temperature Characteristics: TYP ± 100ppm /°C ● Low Power Consumption, 0.7uA (typ) @VIN=1.5V ● Detect Voltage Range: 1.6V ~ 6.0V ● Operating Voltage Range: 0.7V ~ 10V ● Output Configuration: N-Channel open drain or CMOS Applications ● Battery-operated systems ● Microprocessor reset circuitry ● Memory battery back-up circuits ● Power-on reset circuits ● Power failure detection ● System battery life and charge voltage monitors Part No. Package Packing TS61CxxCX RF SOT-23 3Kpcs / 7” Reel TS61NxxCX RF SOT-23 3Kpcs / 7” Reel Note: * Where xx denotes voltage option, available are 20= 2.0V 23= 2.3V 24= 2.4V 25= 2.5V 27= 2.7V 30= 3.0V 33= 3.3V 40= 4.0V 42= 4.2V 44= 4.4V 45= 4.5V Contact factory for additional voltage option. * TS61C: CMOS output * TS61N: N-Channel Open Drain Output Block Diagram CMOS Output N-Channel Open Drain Output 1/7 Version: A07 TS61 Series Voltage Detector Absolute Maximum Rating Parameter Symbol Maximum Unit Input Voltage VIN +12 V Output Current Io 50 mA CMOS Output Voltage N-channel open drain Power Dissipation VOUT SOT-23 Operating Ambient Temperature Range (Gnd – 0.3) to (VIN + 0.3) V (Gnd – 0.3) to 12 PD 150 mW TA -40 ~ +85 o C o Storage Temperature TSTG -65 ~ +150 C Note: Stress above 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 above those indicated in the operation section of the specifications is not implied. Electrical Specifications (Ta = 25 oC, unless otherwise noted) Parameter Conditions Symbol Min Typ Max Unit Circuit VDF VDFx 0.98 VDF VDFx 1.02 V 1 VHYS / VDF 2 -- 8 % 1 VIN=1.5V -- 0.7 2.3 VIN=2.0V -- 0.8 2.7 -- 0.9 3.0 µA 2 VIN=4.0V -- 1.0 3.2 VIN=5.0V -- 1.1 3.6 0.7 -- 10.0 V 1 VIN=1.0V 1.0 2.2 -- VIN=2.0V 3.0 7.7 -- 5.0 10.1 -- mA 3 VIN=4.0V 6.0 11.5 -- VIN=5.0V 7.0 13.0 -- -- -10.0 -2.0 mA 4 -- ±100 -- Detect Voltage Hysteresis range Supply Current Operating Voltage VIN=3.0V VDF(T)=1.6V~6V Iss VIN N-channel VDS=5V Output Current VIN=3.0V IOUT P-channel VDS=2.1V (with CMOS output) VIN=8.0V Temperature Characteristics -40°C ≤ TA ≤ 85°C IOUT ΔVDF ΔTA xVDF Delay Time Vdr VOUT inversion tDLY --0.2 Note: VDF(T): Established Detect Voltage Value, 1.6V ~ 6.0V ±2% for Standard Voltage Detectors Release Voltage: VDR = VDF + VHYS 2/7 ppm / °C ms -5 Version: A07 TS61 Series Voltage Detector Typical Application Circuit CMOS Output N-Channel Open Drain Output Measuring Circuit Test Circuit 1 Test Circuit 2 Test Circuit 3 * Not Necessary with CMOS output product Test Circuit 4 Test Circuit 5 * Not Necessary with CMOS output products 3/7 Version: A07 TS61 Series Voltage Detector Directions for use 1. Please use this IC within the stated maximum ratings. Operation beyond these limits may cause degrading or permanent damage to the device. 2. When a resistor is connected between the VIN pin and the input CMOS output configurations, oscillation may occur as a result of voltage drops at RIN if load current (IOUT) exists. (refer to the Oscillation Description ① below). 3. When a resisted is connected between the VIN pin and the input with CMOS output configurations, irrespective of N-ch output configurations, oscillation may occur as a result of through current at the time of voltage release even if load current (IOUT) does not exist. (refer to the Oscillation Description ② below) 4. In order to stabilize the IC’s operations, please ensure that VIN pin’s input frequency’s rise and fall times are more than several µs/V. 5. Please use N-ch open drains configuration, when a resistor RIN is connected between the VIN pin and power source. In such cases, please ensure that RIN is less than kΩ and that C is more than 0.1µF. Diagram: Circuit using an input resistor Oscillation Description OUTPUT CURRENT OSCILLATION WITH THE CMOS OUTPUT CONFIGURATION When the voltage applied at IN rises, release operations commence and the detector’s output voltage increases. Load current (IOUT) will flow at RL. Because a voltage drop (RIN x IOUT) is produced at the RIN resistor, located between the input (IN) and the VIN pin, the load current will flow via the IC’s VIN pin. The voltage drop will also lead to a fall in the voltage level at the VIN pin. When the VIN pin voltage level falls below the detec voltage level, detect operations will commence. Following detect operations, load current flow will cease and since voltage drop at RIN will disappear, the voltage level at the VIN pin will rise and release operations will begin over again. Oscillation may occur with this “release-detect-release” repetition. Further, this condition will also appear via means of a similar mechanism during detect operations. Diagram 1: Oscillation in relation to output current 4/7 Version: A07 TS61 Series Voltage Detector Oscillation Description (Continue) OUTPUT CURRENT OSCILLATION WITH THE CMOS OUTPUT CONFIGURATION Since the TS61 series are CMOS ICs, through current will flow when the IC’s internal circuit switching operates (during release and detect operations). Consequently, oscillation is liable to occur as a result of drops in voltage at the through current’s resistor (RIN) during release voltage operations (refer to diagram 2). Since hysteresis exists during detect operation, oscillation is unlikely to occur. Diagram 2: Oscillation in relation to through current Function Description 1. When input voltage (VIN) rises above detect voltage (VDF), output voltage (VOUT) will be equal to VIN. (A condition of high impedance exists with N-ch open drain output configurations). 2. When input voltage (VIN) falls below detect voltage (VDF), output voltage will be equal to the ground voltage (VSS). 3. When input voltage (VIN) falls to a level below that of the minimum operating voltage (VMIN), output will become unstable. In this condition, VIN will equal the pulled-up output (should output be pull-up). 4. When input voltage (VIN) rises above the ground voltage (VSS) level, output will be unstable at levels below the minimum operating voltage (VMIN). Between the VMIN and detect release voltage VDR level, the ground voltage (VSS) level will be maintained. 5. When input voltage (VIN) rises above detect release voltage (VDR), output voltage (VOUT) will be equal to VIN. (A condition of high impedance exists with N-ch open drain output configurations.) 6. The difference between VDR and VDF represents the hysteresis range. Timing Chart 5/7 Version: A07 TS61 Series Voltage Detector SOT-23 Mechanical Drawing DIM A A1 B C D E F G H I J 6/7 SOT-23 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX. 0.95 BSC 0.037 BSC 1.9 BSC 0.074 BSC 2.60 3.00 0.102 0.118 1.40 1.70 0.055 0.067 2.80 3.10 0.110 0.122 1.00 1.30 0.039 0.051 0.00 0.10 0.000 0.004 0.35 0.50 0.014 0.020 0.10 0.20 0.004 0.008 0.30 0.60 0.012 0.024 5º 10º 5º 10º Version: A07 TS61 Series Voltage Detector Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. 7/7 Version: A07