M51951A MITSUBISHI | Alldatasheet

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MITSUBISHI <Dig./Ana. INTERFACE> M5 1951A,B/M51952A,B VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES

DESCRIPTION

M51951A,8/M51952A,B are semiconductor integrated circuits PIN CONFIGURATION (TOP VIEW) suited for detecting supply voltage and resetting all types of a [5] outeut logic circuits such as CPUs. So Fane They include a built-in delay circuit to provide a retarda- 2 § ono tion time (200 usec typ.). 23 They find extensive applications, including circuits for 23 NC battery checking, level detecting and waveform shaping. ‘© [1] surecy vortace Outline 5P5T my FEATURES 2 a © Few external parts z= $ © Low threshold operating voltage (Supply voltage to keep Pars outPut =8 low-state at low supply voltage []s=85 [D cxo 22 bocce eee eee sess O.6V (TYP.) at Ry = 22k2 SO 50 Ty srry 33 . Suen change in power supply has minimal effect on the Outline SOT-89 s © Wide application range © SIL package of the same height as DIP (5-pin SIP) @ surety vourace © Extra-small 3-pin package (3-pin FLAT) ® cno @ ouTPuT Od® APPLICATION NC: NO CONNECTION Outline TO-92L Reset circuit of Pch, Nch, CMOS, microcomputer, CPU and microcomputer, 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 BLOCK DIAGRAM M519514, B M51952A, 8 A: Builtin Load A: Builtin Load “O_ B: Open Collector aoe 8: Open Collector pA CHI Buallay a = 8 rolls \\ * 8 atch i [> S > (5) outeut > o > ()oureut Ro c Re. c !

1 DELAY 1 1 DELAY

CAPACITOR: CAPACITOR GND GND MITSUBISHI 7-18 we Miees

MITSUBISHI <Dig./Ana. INTERFACE> M5 1951A,B/M51952A,B VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES FUNCTION DIAGRAM MS1951A, 5 M51952A, B surety 4 25¥ SUPPLY VOLTAGE VOUTAGE 0. 65Vb==: t t STATE STATE ta) LEH Le L (tL ' OUTPUT ta=200 sec 1g200 psec UNDEFINED ABSOLUTE MAXIMUM RATINGS (1a=25. uniess otherwise noied) Conditions Unit Voo Supply vortage 18 Vv Isink Output Sink Current - 6 mA _ uiputwith constant current loa) Vo Output voltage A Type (Output with constant current load) icc v B Type (Open collector output) 18 SP SIL 450 Power dissipation 3P Sit mw 3P FLAT $00 _ 5P SIL 4.5 Ko Thermal Derating Tanase 3P Sit mw/e 3P FLAT 5 Toor | Operating temperature eer Tsig Storage temperature reesry ELECTRICAL CHARACTERISTICS (Ta=25%. uniess othenmse noted) MS51951A. M51952A M51951B M51952B Symbot Pi Test cond Une a [min [typ | Max_| [vs | Beectngvorage Pas | 82s v 82 mv 9.01 %IE \\ Greuit Current Type A Voo= SV [— | 450 | 680 n ee Type 8 Voc =5V | — | ao] «0 | “ | tea | Beaytime | Ta =30~ +85 Nowe) so | 200 | seo | xs Vsat Output Saturation Voltage eset type Voo sink v reset ivpe Minimum | Rp=2.2k@, Veat=0av fork operation FiL=100K9, Veats0av | — | 0.85 | 0.7 | Output Leat Current [Te 8 to na Type 8. Ta= ~30~ +850 a eee | toc | Output toad Curent | Tepe AVeo=SV.Vo=W2Vec | = a0 | 25 | = 17 | wa Guiput High Votiage Note: Delay time can be changed by changing delay capacitor for external capacitor types. (Please refer to typical characteristics) ate MBS 7-19

MITSUBISHI <Dig./Ana. INTERFACE> M5 1951A,B/M51952A,B VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES TYPICAL CHARACTERISTICS TYPPICAL CHARACTERISTICS DETECTING VOLTAGE VS. THERMAL DERATING AMBIENT TEMPERATURE (MAXIMUM RATING) (Supply voltage detecting series) “ EET TTT em tt tt | gue Ae pe ALLL 2 gook_—_. Ne 8 — 8 soo ERX A Joon sit ° Lt | COBSS80) eEeEEH € 8 | ve| Bm BSNS 2 | oo PP UPS at Tt % 25 50 75 100 125 425 —20 0 20 40 60 «80 100 AMBIENT TEMPERATURE Tg (°C) AMBIENT TEMPERATURE Ts (°C) DELAY TIME VS. AMBIENT TEMPERATURE THRESHOLD OPERATING VOLTAGE (M5195XX, Built-in capacitor type) (LL) reset type) TSH FREDO et LE ae an Pt tT 5 dt (1 L | [ aceon] gos g SF < LA RL=2. 2k 2 == 3 ad A\\\\ | annne - cee % 100 2 /| Pa. r00K 9] Pooper} ob eo Ww Ce Z| We —40 —20 0 20 40 60 80 100 0 0.2 O4 0.6 0.8 1.0 AMBIENT TEMPERATURE Ta (°C) SUPPLY VOLIAGE Vee (V) OUTPUT LOAD CURRENT VS. OUTPUT SATURATION VOLTAGE VS. OUTPUT VOLTAGE OUTPUT SINK CURRENT (MB19xxA) s 03 g | J ere Oa : . Z | eseriwreveemav f° a a ET TTT TTT Ty EXCEPT ABOVE. = £ ool eee ae Z| —_ peti ft tt A SSS 2 - naoPanee eT ttt tri td SIZCP EE) EERE 3 e LPP et tt it CPP TT () i 2 3 4 5 6 oO 4 8 12 16 OUTPUT CURRENT Igink (mA) OUTPUT VOLTAGE Vo (V)

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MITSUBISHI <Dig./Ana. INTERFACE> MS 1951A,B/M51952A,B VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES CIRCUIT CURRENT VS. AMBIENT TEMPERATURE (M51951B,M51952B) ot] TTT] _ 600] . ST 5 al ae 2 | | | | EN © oon | cot t+} tt 3 200) oe 109] ti} it | tJ 40-20 0 20 40 60 80 100 AMBIENT TEMPERATURE Ta (°C) EXAMPLE OF APPLICATION CIRCUIT M5195XX Series Reset Circuit Vee SUPPLY i ‘SUPPLY © VOLTAGE 3 R QO VOLTAGE o ©} RESET(RESET) ay _ Note 1. When the detecting supply voltage is 4.25V, Note 4. The logic circuit preferably should not have a pull- M5 1951, M51952, M51953 and M51954 are used. down resistor, but if one is present, add load resistor Ry. When the voltage is anything except 4.25V, M51955, to overcome the pull-down resistor. M51956, M51957.and M51958 are used. Note 5. When the reset terminal in the logic circuit is Note 2. When the delay time is short, M51951, M51952, of the low reset type, M51951, M51953, M51955 and M51955 and M51956 are available. These ICs have a 51957 are used and when the terminal is of the high delay capacity and the delay time is about 200us. reset type, M51952, M51954, M51956 and M51958 are {f a longer delay time is necessary, M51953, M51954, used. 51957 and M51958 are used. ‘Note 6. When a negative supply voltage is used, supply Note 3. If M5195XX and the logic circuit have a common voltage side of M5195XX and the GND side are con- power supply, type A (built-in load type) can be applied nected to negative supply voltage respectively. whether a pull-up resister is included in the logic circuit or not. MITSUBISHI Jains 721