r03ds0003ej0301 rev.3.01 page 1 of 9 apr 19, 2011 preliminary datasheet RNA51951A, b voltage detecting, system resetting ic series description RNA51951A,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 a retardation time (200 ? s typ). they fined extensive applications, including battery checking circuit, level detecting circuit and waveform shaping circuit. features ? few external parts ? low threshold operating voltage (supply voltage to keep low-state at low supply voltage): 0.6 v (typ) at rl = 22 k ? ? wide supply voltage range: 2 v to 17 v ? wide application range ? ordering information part name package type package code package abbreviation taping abbreviation (quantity) surface treatment RNA51951Afph0 sop-8 pin prsp0008de-c fp h (2,500 pcs / reel) 0 (ni/pd/au) RNA51951Apt0 dip-8 pin prdp0008af-b p t (1,000 pcs / box) 0 (ni/pd/au) RNA51951Auph1 upak plzz0004ca-a up h (1,000 pcs / reel) 1 (sn-bi) rna51951bfph0 sop-8 pin prsp0008de-c fp h (2,500 pcs / reel) 0 (ni/pd/au) rna51951bpt0 dip-8 pin prdp0008af-b p t (1,000 pcs / box) 0 (ni/pd/au) rna51951buph1 upak plzz0004ca-a up h (1,000 pcs / reel) 1 (sn-bi) application ? reset circuit of pch, nch, cmos, microcomputer, cpu and mcu, reset of logic circuit, battery check circuit, switching circuit back-up voltage, leve l detecting circuit, waveform shapin g circuit, delay waveform generating circuit, dc/dc converter, over voltage protection circuit recommended operating condition ? supply voltage range: 2 v to 17 v r03ds0003ej0301 rev.3.01 apr 19, 2011
RNA51951A, b preliminary r03ds0003ej0301 rev.3.01 page 2 of 9 apr 19, 2011 outline and article indication trace code ? RNA51951A, b pin no.1 y: year code (the last digit of year) m: month code w: week code c: control code lot no. part no. r 9 5 1 a ymwc ccc sop-8 dip-8 r 9 5 1 b ymwc ccc part no. y: year code m: month code w: week code 55 19 1b r part no. 55 19 1a r 5 a 1 y w m y m wy m w y: year code m: month code w: week code upak 5 b 1 y w m
RNA51951A, b preliminary r03ds0003ej0301 rev.3.01 page 3 of 9 apr 19, 2011 pin arrangement 8 5 6 7 nc nc output power-supply nc gnd nc nc 1 4 3 2 nc: no connection RNA51951A, b (top view) outline: prsp0008de-c (sop-8) prdp0008af-b (dip-8) gnd output supply voltage (top view) RNA51951A, b outline: plzz0004ca-a (upak) 2 3 1 block diagram 1.25 v 25 a typ gnd output ? + ? r1 r2 a: built-in load b: open collector c delay capacitor RNA51951A, b supply voltage operating waveform RNA51951A, b output undefined 4.25 v 0.65 v supply voltage output state h l t t td 200 s td td
RNA51951A, b preliminary r03ds0003ej0301 rev.3.01 page 4 of 9 apr 19, 2011 absolute maximum ratings (ta = 25c, unless otherwise noted) item symbol ratings unit conditions supply voltage v cc 18 v output sink current isink 6 ma v cc type a (output with constant current load) output voltage v o 18 v type b (open collector output) 400 8-pin sop (prsp0008de-c) 570 8-pin dip (prdp0008af-b) power dissipation pd 800 * 1 mw upak (plzz0004ca-a) 4.4 8-pin sop (prsp0008de-c) thermal derating k ? 8.3 mw/c 8-pin dip (prdp0008af-b) refer to the thermal derating curve. operating temperature topr ?40 to +85 c storage temperature tstg ?55 to +125 c note: 1. 15 mm ? 25 mm ? 0.7 mmt alumina ceramic board, ta ? 25c. if ta > 25c, derate by 6.4 mw/c. electrical characteristics (ta = 25c, unless otherwise noted) ? ?l? reset type item symbol min typ max unit test conditions detecting voltage v s 4.05 4.25 4.45 v hysteresis voltage ? v s 30 50 80 mv detecting voltage temperature coefficient v s / ? t ? 0.01 ? %/c ? 450 680 type a, v cc = 5v circuit current i cc ? 420 630 ? a type b, v cc = 5v delay time t pd 80 200 500 ? s output saturation voltage vsat ? 0.2 0.4 v v cc = 4v, isink = 4ma ? 0.67 0.8 r l = 2.2k ? , vsat ? 0.4v threshold operating voltage v opl ? 0.55 0.7 v r l = 100k ? , vsat ? 0.4v output leakage current i oh ? ? 30 na type b output load current i oc ?40 ?25 ?17 ? a type a, v cc = 5v, v o = 1/2 ? v cc output high voltage v oh v cc ?0.2 v cc ?0.06 ? v type a
RNA51951A, b preliminary r03ds0003ej0301 rev.3.01 page 5 of 9 apr 19, 2011 typical characteristics ambient temperature ta (c) 4.34 4.22 ?40 0?20 20 40 8060 100 4.24 4.26 4.28 4.30 4.32 v sh v sl detection voltage v s (v) detection voltage vs. ambient temperature supply voltage v cc (v) output voltage v out (v) 1.0 0 0 0.2 0.4 0.6 0.8 1.0 0.2 0.4 0.6 0.8 ta = 25c r l = 2.2 k r l = 22 k r l = 100 k threshold operating voltage thermal derating 0255075 85 100 150125 ambient temperature ta (c) 900 800 700 600 500 0 100 200 300 400 power dissipation pd (mw) ambient temperature ta (c) ?40 0?20 20 40 8060 100 delay time t pd ( s) 350 0 150 100 50 250 200 300 v cc = 5v 10v v cc = 15v delay time vs. ambient temperature output sink current isink (ma) output saturation voltage vsat (v) 0.3 0 02 1 3456 0.1 0.2 v cc = 5 v v cc = 15 v v cc = 10 v output load current vs. output voltage (RNA51951A) output voltage v o (v) output load current i cc ( a) 0 0 4 8 12 16 ?10 ?20 ?30 ?40 output saturation voltage vs. output sink current v cc = 4 v 8-pin dip (prdp0008af-b) upak (plzz0004ca-a) 8-pin sop (prsp0008de-c)
RNA51951A, b preliminary r03ds0003ej0301 rev.3.01 page 6 of 9 apr 19, 2011 ambient temperature ta (c) ?40 0 ?20 20 40 80 60 100 v cc = 5 v circuit current vs. ambient temperature (rna51951b) circuit current i cc (a) 700 0 300 200 100 500 400 600 example of application circuit reset circuit of rna51951 r l v cc rna51951x reset logic circuit gnd gnd power- supply power- supply output figure 1 reset circuit of rna51951 notes: 1. when the voltage is anything except 4.25 v, rna51955, rna51957, and rna51958 are used. in this case, the detecting supply voltage is 1.25 ? (r 1 +r 2 )/r 2 (v) approximately. the detecting supply voltage can be set between 2 v and 15 v. 2. when the delay time is short, rna51951 and rna5 1955 are available. these ics have a delay capacity and the delay time is about 200 ? s. if a longer delay time is necessary, rna51953, rna51957, and rna51958 are used. 3. if the rna5195xx and the logic circuit share a comm on 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 r l to overcome the pull-down resistor. 5. when the reset terminal in the logic circuit is of the low reset type, rna51951, rna51953, rna51955, and rna51957 are used and when the terminal is of the high reset type, rna51958 are used. 6. when a negative supply voltage is used, the supply voltage side of rna5195xx and the gnd side are connected to negative suppl y voltage respectively.
RNA51951A, b preliminary r03ds0003ej0301 rev.3.01 page 7 of 9 apr 19, 2011 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 c 1 and c 2 for the low frequency and for the high frequency between the power supply line and the gnd line as shown in following figure 2. power-supply output v cc rna51951 gnd c 2 c 1 + example of ripple noise measures figure 2 example of ripple noise measures setting of output load resistance (rna51951b) 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 th e 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 resi stance (pull-up resistance) r l so that the output current (output inflow current i l ) at l level may become 4 ma or less. moreover, pleas e never exceed absolute maximum rating (6 ma). v cc (2 v to 17 v) i l 4 ma 6 r l figure 3 output load resistance r l 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/products/comm on_info/reliability/reliability_root.jsp 2. additionally, please inquire of our company when there is an uncertain point on use.
RNA51951A, b preliminary r03ds0003ej0301 rev.3.01 page 8 of 9 apr 19, 2011 package dimensions a l e c 1 b 1 d e a 2 b p c x y h e z l 1 4.854.65 0.90 0.12 0 8 6.2 0.15 0.20 0.25 1.12 1.42 0.46 0.00 0.1 0.20 4.4 1.85 4.6 4.2 0.25 0.45 0.65 2.03 reference symbol dimension in millimeters min nom max 5.05 a 1 0.34 0.4 6.5 5.7 1.27 0.10 0.75 5 8 4 f *1 *2 *3 p mx y 1 index mark e a z b e h d p terminal cross section ( ni/pd/au plating ) c b 1 detail f a 2 a note) 1. dimensions"*1 (nom)"and"*2" do not include mold flash. 2. dimension"*3"does not include trim offset. e p-sop8-4.4x4.85-1.27 0.1g mass[typ.] ? prsp0008de-c renesas code jeita package code previous code 1 l l ( ni/pd/au plating ) 5 8 4 1 3 1 p 1 e d e b b a la e z c 0.89 2.54 1.27 0.480.40 7.4 10.6 15 0 2.792.542.29 0.31 0.250.19 1.30 0.56 0.5 e 1 l e c b p a e d b 3 z a 1 5.06 6.30 9.60 reference symbol dimension in millimeters min nom max 7.62 p-dip8-6.3x9.6-2.54 0.54g mass[typ.] dp-8fv prdp0008af-b renesas code jeita package code previous code
RNA51951A, b preliminary r03ds0003ej0301 rev.3.01 page 9 of 9 apr 19, 2011 4.5 0.1 1.8 max 1.5 0.1 0.44 max 0.44 max 0.48 max 0.53 max 1.5 1.5 3.0 2.5 0.1 4.25 max 0.8 min 1 0.4 (1.5) (2.5) (0.4) (0.2) previous code plzz0004ca-a upak / upakv mass[typ.] 0.050g sc-62 renesas code jeita package code unit: mm package name upak
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