M51953A,B/M51954A,B Voltage Detecting, System Resetting IC Series REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Description M51953A,B/M51954A,B are semiconductor integrated circuits designed for detecting supply voltage and resetting all types of logic circuits such as CPUs. They include a built-in delay circuit to provide the desired retardation time simply by adding an external capacitor. They fined extensive applications, including battery checking circuit, level detecting circuit and waveform shaping circuit. Features • Few external parts • Large delay time with a capacitor of small capacitance (td ≈ 100 ms, at 0.33 µF) (M51953, M51954) • Low threshold operating voltage (Supply voltage to keep low-state at low supply voltage): 0.6 V (Typ) at RL = 22 kΩ • Wide supply voltage range: 2 V to 17 V • Wide application range Application • Reset circuit of Pch, Nch, CMOS, microcomputer, CPU and MCU, Reset of logic circuit, Battery check circuit, switching circuit back-up voltage, level detecting circuit, waveform shaping circuit, delay waveform generating circuit, DC/DC converter, over voltage protection circuit Recommended Operating Condition • Supply voltage range: 2 V to 17 V Pin Arrangement M51953AL/BL M51954AL/BL 5 Output 4 Delay capacitor M51953AFP/BFP M51954AFP/BFP NC 1 8 NC NC 2 7 Power-supply NC 3 6 Output 3 GND 2 NC 1 Power-supply GND 4 (Top view) (Top view) Outline: 5P5T 5 Delay capacitor NC: No Connection Outline: PRSP0008DE-C (recommend) PRSP0008DA-A (8P2S-A) (not recommend for new design) REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 1 of 10 M51953A,B/M51954A,B Block Diagram M51953A, B Powersupply M51954A, B 5µA Typ R1 25µA Typ Output + R2 1.25V GND 25µA Typ Output – – + A: Built-in Load B: Open Collector 5µA Typ R1 – R2 Powersupply A: Built-in Load B: Open Collector + 1.25V Delay capacitor GND Delay capacitor Operating Waveform 4.25V 0.65V t H td td L Output undefined td ≈ 0.34 × Cd(pF) µs REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 2 of 10 Supply voltage M51952A, B Output state Output state Supply voltage M51953A, B t 4.25V t H td td L td ≈ 0.34 × Cd(pF) µs t M51953A,B/M51954A,B Absolute Maximum Ratings (Ta = 25°C, unless otherwise noted) Item Supply voltage Symbol VCC Output sink current Output voltage Power dissipation Ratings 18 Unit V Conditions Isink VO 6 VCC mA V Type A (output with constant current load) Pd 18 450 mW Type B (open collector output) 5-pin SIP 400 300 Thermal derating Kθ 4.5 4.4 8-pin SOP (PRSP0008DE-C): recommend 8-pin SOP (PRSP0008DA-A): not recommend mW/°C Refer to the thermal derating curve. 3 5-pin SIP 8-pin SOP (PRSP0008DE-C) : recommend 8-pin SOP (PRSP0008DA-A) : not recommend Operating temperature Topr –30 to +85 °C Storage temperature Tstg –40 to +125 °C Electrical Characteristics (Ta = 25°C, unless otherwise noted) • “L” reset type M51953A, M51953B • “H” reset type M51954A, M51954B Item Symbol Min Typ Max Unit Detecting voltage VS 4.05 4.25 4.45 V Hysteresis voltage ∆VS 30 50 80 mV Detecting voltage temperature coefficient VS/∆T — 0.01 — %/°C Circuit current ICC µA Test Conditions Type A, VCC = 5V — 450 680 — 420 630 tpd 1.6 3.4 7 ms Constant current Ipd –8 –5 –3 µA VCC = 5V Output saturation voltage Vsat — 0.2 0.4 V L reset type, VCC = 4V, Isink = 4mA — 0.2 0.4 Threshold operating voltage VOPL — 0.67 0.8 — 0.55 0.7 Output leakage current IOH — — 1 µA Type B Output load current IOC –40 –25 –17 µA Type A, VCC = 5V, VO = 1/2 × VCC Output high voltage VOH VCC–0.2 VCC–0.06 — V Type A Delay time Note: Type B, VCC = 5V Cd = 0.01µF * H reset type, VCC = 5V, Isink = 4mA V L reset type minimum supply voltage for IC operation RL = 2.2kΩ, Vsat ≤ 0.4V RL = 100kΩ, Vsat ≤ 0.4V Please set the desired delay time by attaching capacitor of the range between 4700 pF and 10 µF. REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 3 of 10 M51953A,B/M51954A,B Typical Characteristics Thermal Derating (Maximum Rating) Detection Voltage vs. Ambient Temperature (Supply voltage detection series) 4.34 300 200 100 25 50 75 85 100 Detection Voltage VS (V) 400 0 0 Delay Capacitance Cd (µF) 5-pin SIP 8-pin SOP (PRSP0008DE-C) : recommend 8-pin SOP (PRSP0008DA-A) : not recommend 4.32 4.30 VSH 4.28 4.26 VSL 4.24 4.22 –40 –20 125 0 20 40 60 80 100 Ambient Temperature Ta (°C) Ambient Temperature Ta (°C) Delay Capacitance vs. Delay Time (M5195xx, External delay capacitor type) Delay Time vs. Ambient Temperature (M5195xx, External delay capacitor type) 6 10 7 V CC = 5V 5 3 CD = 0.01µF Delay Time tpd (ms) Power Dissipation Pd (mW) 500 1 7 5 3 0.1 7 5 3 0.01 7 5 3 0.001 0.1 3 57 1 5 4 VCC = 5V 3 10V VCC = 15V 2 1 0 –40 –20 3 5 7 10 3 5 7 100 3 5 7 1000 0 20 40 60 80 100 Ambient Temperature Ta (°C) Canstant Current at Cd pin vs. Ambient Temperature (M5195xx, External delay capacitor type) –12 Threshold Operating Voltage ([L] reset type) VCC = 5V VCC = 15V –10 –8 –6 –4 –2 0 –40 –20 0 20 1.0 Output Voltage VOUT (V) Canstant Current at Cd pin Ipd (µA) Delay Time tpd (ms) 40 60 80 100 Ambient Temperature Ta (°C) REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 4 of 10 Ta = 25°C 0.8 0.6 RL = 2.2kΩ 0.4 RL = 22kΩ RL = 100kΩ 0.2 0 0 0.2 0.4 0.6 0.8 Supply Voltage VCC (V) 1.0 M51953A,B/M51954A,B Output Load Current vs. Output Voltage (M5195xA) Supply voltage detecting "L" reset type : VCC = 4V Except above mentioned : VCC = 5V Output Load Current ICC (µA) Output Saturation Voltage Vsat (V) Output Saturation Voltage vs. Output Sink Current 0.3 0.2 0.1 0 0 1 2 3 4 5 6 Output Sink Current Isink (mA) Circuit Current ICC (µA) Circuit Current vs. Ambient Temperature (M51953B, M51954B) 700 600 500 VCC = 5V 400 300 200 100 0 –40 –20 0 20 40 60 80 100 Ambient Temperature Ta (°C) REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 5 of 10 –40 –30 –20 VCC = 5V VCC = 10V VCC = 15V –10 0 0 4 8 12 Output Voltage VO (V) 16 M51953A,B/M51954A,B Example of Application Circuit Reset Circuit of M5195xx Series Powersupply Powersupply RL Output M51953x M51954x GND VCC RESET (RESET) Logic circuit Delay capacitor GND Cd Figure 1 Reset Circuit of M5195xx Series Notes: 1. When the detecting supply voltage is 4.25 V, M51951, M51952, M51953 and M51954 are used. In this case, R1 and R2 are not necessary. When the voltage is anything except 4.25 V, M51955, M51956, M51957 and M51958 are used. In this case, the detecting supply voltage is 1.25 × (R1 +R2)/R2 (V) approximately. The detecting supply voltage can be set between 2 V and 15 V. 2. When the delay time is short, M51951, M51952, M51955 and M51956 are available. These ICs have a delay capacity and the delay time is about 200 µs. If a longer delay time is necessary, M51953, M51954, M51957 and M51958 are used. In this case, the delay time is about 0.34 × Cd (pF) µs. 3. If the M5195xx and the logic circuit share a common power source, type A (built-in load type) can be used whether a pull-up resistor is included in the logic circuit or not. 4. The logic circuit preferably should not have a pull-down resistor, but if one is present, add load resistor RL to overcome the pull-down resistor. 5. When the reset terminal in the logic circuit is of the low reset type, M51951, M51953, M51955 and M51957 are used and when the terminal is of the high reset type, M51952, M51954, M51956 and M51958 are used. 6. When a negative supply voltage is used, the supply voltage side of M5195xx and the GND side are connected to negative supply voltage respectively. Case of Using Reset Signal except Supply Voltage in the M5195xx Series (b) Reset at transistor ON (a) Reset at ON Powersupply M5195xx (External delay capacitor type) GND Out put Powersupply RL VCC Powersupply M5195xx (External delay capacitor type) RESET (RESET) Logic circuit Delay capacitor GND GND Cd Out put Powersupply RL RESET (RESET) Logic circuit Delay capacitor GND Cd Control signal Figure 2 Case of Using Reset Signal except Supply Voltage in the M5195xx Series REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 6 of 10 VCC M51953A,B/M51954A,B Notice for use About the Power Supply Line 1. About bypass capacitor Because the ripple and the spike of the high frequency noise and the low frequency are superimposed to the power supply line, it is necessary to remove these. Therefore, please install C1 and C2 for the low frequency and for the high frequency between the power supply line and the GND line as shown in following figure 3. VCC + C1 C2 Power-supply Example of ripple noise measures M51953 M51954 GND Output Delay capacitor Cd Figure 3 Example of Ripple Noise Measures Setting of Delay Capacity Please use capacitor Cd for the delay within the range of 10 µF or less. When a value that is bigger than this is set, the problem such as following (1), (2), and (3) becomes remarkable. t VCC tpd Output tPHL Figure 4 Time Chart at Momentary Voltage-Decrease (1) The difference at delay time becomes remarkable. A long delay setting of tens of seconds is fundamentally possible. However, when set delay time is lengthened, the range of the difference relatively grows, too. When a set value is assumed to be ‘tpd’, the difference occurs in the range from 0.47 × tpd to 2.05 × tpd. For instance, 34 seconds can be calculated at 100 µF. However, it is likely to vary within the ranges of 16-70 seconds. (2) Difficulty to react to a momentary voltage decrease. For example, the reaction time tPHL is 10 µs when delay capacitor Cd = 0.1 µF. The momentary voltage-decrease that is longer than such tPHL are occurs, the detection becomes possible. When the delay capacitance is enlarged, tPHL also becomes long. For instance, it becomes about 100 to 200 µs in case of circuit constant C1 = 100 µF. (Characteristic graph 1 is used and extrapolation in case of Cd = 100 µF.) Therefore, it doesn't react to momentary voltage-decrease that is shorter than this. (3) Original delay time is not obtained. When the momentary voltage-decrease time ‘t’ is equivalent to tPHL, the discharge becomes insufficient and the charge starts at that state. This phenomenon occurs at large capacitance. And, original delay time tpd is not obtained. Please refer to characteristic graph 2. (Delay time versus input pulse width) REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 7 of 10 M51953A,B/M51954A,B Characteristic Graph 1 Reaction Time vs. Delay Capacitance (Example data) Characteristic Graph 2 Delay Time vs. Momentary Voltage Decrease Pulse Width (Example data) 10000 Delay Time tpd (ms) Reaction Time tPHL (µs) 1000 200 100 10 1 0.01 0.1 1 10 Delay Capacitance Cd (µF) 1000 100 Delay Capacitance 0.01µF 0.033µF 0.1µF 0.33µF 1µF 2.2µF 3.3µF 10 1 1 100 10 1000 100 Pulse Width (µs) 10000 Figure 5 Characteristic Graph Setting of Output Load Resistance (M51953B/M51954) High level output voltage can be set without depending on the power-supply voltage because the output terminal is an open collector type. However, please guard the following notes. 1. Please set it in value (2 V to 17 V) within the range of the power-supply voltage recommendation. Moreover, please never impress the voltage of maximum ratings 18 V or more even momentarily either. 2. Please set output load resistance (pull-up resistance) RL so that the output current (output inflow current IL) at L level may become 4 mA or less. Moreover, please never exceed absolute maximum rating (6 mA). VCC (2V to 17V) RL 6 IL ≤ 4mA Figure 6 Output Load Resistance RL Others 1. Notes when IC is handled are published in our reliability handbook, and please refer it. The reliability handbook can be downloaded from our homepage (following URL). http://www.renesas.com/fmwk.jsp?cnt=reliability_root.jsp&fp=/products/common_info/reliability 2. Additionally, please inquire of our company when there is an uncertain point on use. REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 8 of 10 M51953A,B/M51954A,B Package Dimensions 5P5T Plastic 5pin 240mil SIP EIAJ Package Code SIP5-P-240-2.54 Weight(g) 0.22 JEDEC Code – Lead Material Cu Alloy D L A1 A A2 E Symbol 1 5 b e E1 b2 A A1 A2 b b1 b2 c D E E1 e L c b1 SEATING PLANE JEITA Package Code P-SOP8-4.4x4.85-1.27 RENESAS Code PRSP0008DE-C *1 Previous Code — MASS[Typ.] 0.1g F D 8 Dimension in Millimeters Min Nom Max – – 6.1 – – 1.4 – – 4.0 0.4 0.5 0.6 1.1 1.2 1.5 0.75 0.85 1.15 0.22 0.27 0.34 11.7 11.9 11.5 1.77 1.97 2.17 0.6 0.7 0.8 – – 2.54 – – 3.0 NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. 5 c *2 E HE bp Index mark Terminal cross section ( Ni/Pd/Au plating ) Z Reference Symbol 4 1 e *3 bp x M A A2 L1 A1 θ L y Detail F REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 9 of 10 D E A2 A1 A bp b1 c c1 θ HE e x y Z L L1 Dimension in Millimeters Min Nom Max 4.65 4.85 5.05 4.2 4.4 4.6 1.85 0.00 0.1 0.20 2.03 0.34 0.4 0.46 0.15 0.20 0.25 0° 8° 5.7 6.2 6.5 1.12 1.27 1.42 0.12 0.10 0.75 0.25 0.45 0.65 0.90 M51953A,B/M51954A,B JEITA Package Code P-SOP8-4.4x5-1.27 RENESAS Code PRSP0008DA-A MASS[Typ.] 0.07g E 5 *1 HE 8 Previous Code 8P2S-A F 1 NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET. 4 Index mark c A2 *2 A1 D L A Reference Symbol *3 e bp y D E A2 A1 A bp c Detail F HE e y L REJ03D0776-0200 Rev.2.00 Aug 20, 2007 Page 10 of 10 Dimension in Millimeters Min Nom Max 4.8 5.0 5.2 4.2 4.4 4.6 1.5 0.05 1.9 0.35 0.4 0.5 0.13 0.15 0.2 0° 10° 5.9 6.2 6.5 1.12 1.27 1.42 0.1 0.2 0.4 0.6 Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Notes: 1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of Renesas or any third party with respect to the information in this document. 2. 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