R3119N SERIES 50V INPUT VOLTAGE TYPE VOLTAGE DETECTOR NO.EA-187-090115 OUTLINE R3119N Series are CMOS process based (advantageous for low supply current) input voltage range (50V) voltage detector with high detector threshold accuracy and ultra-low supply current.Each of those ICs consists of a voltage reference unit, a comparator, resistors for detector threshold setting, an output driver and a hysteresis circuit. There are two types: R3119NxxxA has the CD pin of external IC for setting the release-delay-time. R3119NxxxE has the SENSE pin of external IC. The supply current of IC is only 3.3A. The detector threshold is possible to set range from 2.3V to 12V internally with high accuracy (1.5%). The output type is Nch Open drain type. Since the package for these ICs is small SOT-23-5, high density mounting of the ICs on board is possible. FEATURES * Supply Current**************************************************************** Typ.3.3A * Operating Voltage*********************************************************** 1.5V~36.0V(CD pin type: R3119NxxxA) 2.1V~6.0V(SENSE pin type: R3119NxxxE) * High Detect Voltage Accuracy **************************************** 1.5% (Ta=25C) * Detect Voltage Range***************************************************** Stepwise setting with a step of 0.1V in the range of 2.3V to 12.0V is possible * Released Delay Time (Power ON Reset Delay Time)**** -50~+80%( CD pin type: R3119NxxxA) * Package************************************************************************** SOT-23-5 APPLICATIONS * CPU and logic circuit reset. * Battery checker. * Battery back-up circuit. * Supervising of the power supply voltage of in-vehicle equipment. 1 R3119x BLOCK DIAGRAMS R3119NxxxA R3119NxxxE SENSE VDD VDD Vref - Delay + Circuit DOUT Vref + DOUT GND GND CD SELECTION GUIDE The detect voltage, version, package, and the taping type for the ICs can be selected at the user's request. The selection can be made with designating the part number as shown below; R3119x xxx x-xx-x Part Number a b c d e Code Contents a Designation of Package Type: N: SOT-23-5 b Setting Detect Voltage: Stepwise setting with 0.1V in the range from 2.30V to 12.0V is possible c Designation of Active Type: A: with CD pin type E: with SENSE pin type d Designation of Taping Type: Ex.TR (refer to Taping Specifications: TR type is the standard direction) e Designation of composition of pin plating: -F: Lead free solder plating 2 R3119x PIN CONFIGURATION 5 SOT-23-5 4 (mark side) 1 2 3 PIN DESCRIPTIONS R3119N: SOT-23-5 Pin No. Symbol 1 VDD 2 GND * Ground Pin 3 GND * Ground Pin 4 DOUT 5 CD SENSE Description Input Pin VD Output Pin Connecting pin with external capacitor for setting delay time Voltage Detector SENSE pin * No. 2 and No.3 pin must be wired to the GND plan when it is mounted on board. 3 R3119x ABSOLUTE MAXIMUM RATINGS Symbol Item Ratings Unit R3119NxxxA -0.3~50.0 R3119NxxxE -0.3~7.0 VDD Input Voltage DOUT Output Voltage (DOUT pin) VCD Output Voltage (CD pin) R3119NxxxA -0.3~7.0 V Input Voltage (SENSE Pin) R3119NxxxE -0.3~50.0 V VSENSE IOUT Output Current (DOUT pin) PD Power Dissipation* Ta Ambient Temperature Range -0.3~7.0 V V 20 SOT-23-5 mA 420 - 40 ~ + 105 Tstg Storage Temperature Range - 55 ~ + 125 * For Power Dissipation, please refer to PACKAGE INFORMATION to be described mW C C ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. 4 R3119x ELECTRICAL CHARACTERISTICS R3119NxxxA (CD pin type) value indicate -40C < = Ta < = 105C is checked and guaranteed by design engineering. Ta=25C Symbol ISS Item Supply Current Conditions Typ. Max. VDD=(-VDET) - 0.1V 3.3 5.6 VDD=(-VDET) + 1.0V 3.3 5.5 Ta=25C x 0.985 x 1.015 -40C < = Ta < = 105C x 0.970 x 1.020 -VDET Detector Threshold VHYS Detector Threshold Hysterisis tDELAY Output Delay Time VDD=1.5V(Vset)+2.0V CD=0.01F -VDET /Ta Detector Threshold Temperature Coefficient -40C < = Ta < = 105C VDDH Maximum Operating Voltage VDDL Minimum Operating Voltage *1 VDD pin Output Current V 6.5 % 45 85 150 ms ppm /C 100 1.2 -40C < = Ta < = 105C 1.25 VDD=2.2V VDS=0.5V 2.6V < = (-VDET)<3.0V VDD =2.5V VDS=0.5V 3.0V < = (-VDET) VDD =2.9V VDS=0.5V A 5 Ta=25C 2.3V < = (-VDET)<2.6V Unit 3.5 36 VDD=1.5V,VDS=0.05V IOUT Min. 230 V V A 2.8 3.3 mA 3.5 The specification in is checked and guaranteed by design engineering. All of unit are tested and specified under load conditions such that Tj Ta=25C except for Detector Threshold Temperature Coefficient item. *1) This value is the minimum input voltage when the output voltage is 0.1V or less at detection. (the pull-up resistance;100k, the pull-up voltage;5.0V) RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions. 5 R3119x R3119NxxxE (SENSE pin type) value indicate -40C < = Ta < = 105C is checked and guaranteed by design engineering. (Ta=25C) Symbol VDD ISS Item Conditions Input Voltage Supply Current VDD=6.0V SENSE=(-VDET) - 1.0V VDD=6.0V SENSE=(-VDET) + 1.0V A 3.3 5.5 x 1.020 tPLH Output Delay Time VDD=6.0V SENSE=1.5V(Vset)+2.0V Detector Threshold Temperature Coefficient -40C < = Ta < = 105C Output Current 5.5 x 0.970 VDD=6.0V IOUT V -40C < = Ta < = 105C Detector Threshold Hysterisis Minimum Operating Voltage *1 6.0 x 1.015 VHYS VDDL Unit x 0.985 SENSE pin VDD=6.0V Maximum Operating Voltage 3.3 Max. Ta=25C Detector Threshold VDDH Typ. 2.1 -VDET -VDET /Ta Min. 3.5 5 6.5 % 15 s 100 ppm /C 36 Ta=25C 1.2 -40C < = Ta < = 105C 1.25 SENSE < (-VDET) VDD=2.1V VDS=0.05V SENSE < (-VDET) VDD=2.2V VDS=0.5V V V V 420 A 2.8 mA The specification in is checked and guaranteed by design engineering. All of unit are tested and specified under load conditions such that Tj Ta=25C except for Detector Threshold Temperature Coefficient and Output Delay Time item. *1) This value is the minimum input voltage when the output voltage is 0.1V or less at detection. (the pull-up resistance;100k, the pull-up voltage;5.0V) RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions. 6 R3119x OPERATING Diagram for Operation (CD pin type: R3119NxxxA) VDD Comparator R1 DOUT Vref Delay Circuit + Due to Nch Open Drain output, DOUT pin should be pulled-up to an external voltage level. R2 HYS Tr. R3 Nch GND Capacitor CD Fig.1 Block Diagram of External Capacitor Connection 1 2 Input Voltage VDD 4 5 Step 1 2 3 4 5 I II II II I L H Indefinite H L HYS Tr. OFF ON Indefinite ON OFF Output Nch Tr. OFF ON Indefinite ON OFF B Released Voltage +VDET Detector Threshold -VDET 3 Detector Threshold Hysterisis A Comparator (-) pin Input Voltage Comparator Output Minimum Operating Voltage VDDL GND Pull-up Voltage Output Voltage DOUT Detector Delay Time tRESET Output Delay Time tDELAY I R2+R3 x VDD R1+R2+R3 GND Fig.2 Operation Diagram II R2 R1+R2 x VDD Explanation of Operation Step 1. The output voltage is equal to the pull-up voltage. Step 2. At point "A", Vref > = VDD x (R2+R3) / (R1+R2+R3) is true, as a result, the output of comparator is reversed from "L" to "H", therefore the output voltage becomes the GND level. The voltage level of Point A means a detector threshold voltage (-VDET) Step 3. When the input voltage is lower than the minimum operating voltage, the operation of the output transistor becomes indefinite,. The output voltage is equal to the pull-up voltage. Step 4. The output voltage is equal to the GND level. Step 5. At Point "B", Vref < = VDD x R2 / (R1+R2) it true, as a result, the output of comparator is reversed from "H" to "L", then the output voltage is equal to the pull-up voltage. The voltage level of Point B means a released voltage (+VDET) Output delay time (tDELAY) is calculatable by an external capacitor as the following formula. tDELAY [s] =8.5 x 106 x CD [F] 7 R3119x Diagram for Operation (SENSE pin type: R3119NxxxE) VDD SENSE Comparator R1 Vref DOUT + Due to Nch Open Drain output, DOUT pin should be pulled-up to an external voltage level. R2 HYS Tr. R3 Nch GND Fig.3 Block Diagram 1 SENSE Voltage VSENSE 2 3 B Released Voltage +VDET Detector Threshold Hysterisis Detector Threshold -VDET A Step 1 2 3 Comparator (-) pin Input Voltage I II I Comparator Ourput L H L HYS Tr. OFF ON OFF Output Nch Tr. OFF ON OFF GND Pull-up Voltage Output Voltage DOUT Detector Delay Time tRESET I Output Delay Time tPLH R2+R3 x VSENSE R1+R2+R3 GND Fig.4 Operation Diagram II R2 R1+R2 x VSENSE Explanation of Operation Step 1. SENSE voltage is larger than detector threshold; the output voltage is equal to the pull-up voltage. Step 2. At Point "A", Vref > = VSENSE x (R2+R3) / (R1+R2+R3) is true, as a result, the output of comparator is reversed from "L" to "H", then the output voltage is equal to the pull-up voltage. The voltage level of Point A means a detector threshold voltage (-VDET) Step 3. At Point "B", Vref < = VSENSE x R2 / (R1+R2) is true, as a result, the output of comparator is reversed from "H" to "L", then the output voltage is equal to the pull-up voltage. The voltage level of Point B means a released voltage (+VDET) 8 R3119x Power Supply Injection Order The R3119NxxxE Series (SENSE pin type) supervise the voltage of the SENSE pin. VDD pin and SENSE pin can be used at the same voltage level. Likewise, VDD pin and SENSE pin can be used at the different voltage level. If the VDD pin and SENSE pin are used at different voltage level, regarding the start-up sequence, force the voltage level to VDD pin prior to the SENSE pin. If the SENSE pin voltage is equal or more than the released voltage (+VDET), DOUT pin becomes "H"(Fig.5). Besides, a voltage beyond VDD pin is also acceptable to SENSE pin. VDD +VDET SENSE DOUT time Fig.5 Turn On Sequence 9 R3119x TEST CIRCUITS R3119NxxxA (CD pin type) A VIN VDD VDD CD VIN R3119NxxxA GND CD 100k 5V R3119NxxxA DOUT DOUT GND V Test Circuit for Supply Current Test Circuit for Detector Threshold VDD VIN CD R3119NxxxA GND DOUT A VDS Test Circuit for Nch Driver Output Current 1.5V(-VDET)+2.0V VDD R3119NxxxA GND 100k CD 5V 10nF DOUT V Test Circuit for Output Delay Time 10 R3119x R3119NxxxE (SENSE pin type) A 6V VDD 6V R3119NxxxE GND 100k SENSE VDD SENSE 5V R3119NxxxE DOUT DOUT GND V Test Circuit for Supply Current Test Circuit for Detector Threshold SENSE VDD VIN R3119NxxxE DOUT GND A VDS Test Circuit for Nch Driver Output Current 1.5V(-VDET)+2.0V VDD 6V 100k SENSE 5V R3119NxxxE GND DOUT V Test Circuit for Output Delay Time 11 R3119x TECHNICAL NOTES When R3119NxxxA/E is used in Fig.A, Fig.X, if the value of R1 is set excessively large, the dropdown voltage caused by the consumption current of IC itself, may vary the detector threshold and the release voltage. Also, if the value of R1 is set excessively large, there may be delay in start-up and may cause oscillation generated by cross conduction current. When R3119NxxxA is used in Fig. B, if the value of R1 is set excessively large, the dropdown voltage caused by the consumption current of IC itself, may vary the detector threshold and the released voltage. Also, if the value of R1 and R2 is set excessively large, there may be delay in start-up and may cause oscillation generated by cross conduction current. When R3119NxxxA/E is used in Fig.C, Fig.Y, if the value of R1 is set excessively large, the dropdown voltage caused by the consumption current of IC itself may vary the detector threshold and the release voltage. Also, if the value of R1 is set excessively large, there may be delay in start-up and may cause oscillation generated by cross conduction current. Furthermore, if the value of R1 is set large and the value of R3 is set small, released voltage level may shift and the minimum operating voltage may differ. If the value of R3 is set excessively small from R1, release may not occur and may cause oscillation. VDD VDD VDD R1 R1 VDD VDD R3119NxxxA Series R2 DOUT GND R3119NxxxA Series DOUT GND Fig.C VDD R1 R1 VDD VDD R3119NxxxE Series Fig.X R3 R3119NxxxA Series DOUT Fig.B VDD GND VDD GND Fig.A SENSE R1 DOUT SENSE R3119NxxxE Series R3 DOUT GND Fig.Y 12 R3119x POWER DISSIPATION (SOT-23-5) This specification is at mounted on board. Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the measurement at the condition below: (Power Dissipation (SOT-23-5) is substitution of SOT-23-6.) Measurement Conditions Standard Test Land Pattern Mounting on Board (Wind velocity=0m/s) Glass cloth epoxy plastic (Double sided) 40mm * 40mm * 1.6mm Top side: Approx. 50%, Back side: Approx. 50% 0.5mm * 44pcs Environment Board Material Board Dimensions Copper Ratio Through-holes Measurement Result (Ta=25C, Tjmax=125C) Standard Land Pattern 420mW ja = (125-25C)/0.42W= 263C/W Power Dissipation Thermal Resistance Free Air 250mW 400C/W 40 500 On Board 420 400 300 Free Air 250 40 Power Dissipation PD (mW) 600 200 100 0 0 25 50 75 100 125 105 Ambient Temperature (C) Power Dissipation 150 Measurement Board Pattern IC Mount Area (Unit: mm) 13