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1/13 ultra small analog output temperature sensor with alarm output pin xc3101 series ??????????????????????????????????????????????? general description the xc3101 series is a temperature sens or ic which features ultra small, lo w current consumption, and high-accurate detection. it can provide both analog and alarm outputs. the alarm output configures n-channel open-drai n. the device consists of a band-gap type temperature sensor, a voltage reference, a tem perature setting tilt amplifier, a comparator, and various set resistors. alarm temperature is internally set at 70 ? . when the temperature exceeds a set point, the alarm output is maintained as "low". when the temperature drops a pre-set hyst eresis width from the set point, the al arm output is released to "high". the hysteresis width is 5 ? . an analog voltage output is provided in a high-accuracy whic h is guaranteed in the operating temperature range of -40 ? to 100 ? . an external a/d can monitor the sensing temperature. the operating input voltage range is 2.7 to 5. 5v. the small consumption current of 3.5 a (typ.) is ideally suited for temperature detection for battery devices. the ultra small uspn-4 (1.2 x 0.9 x 0.4) package is available for the high-density board mounting in mobile device applications as well as an industry standard package ssot-24. features operating voltage range : 2.7v 5.5v analog output voltage : 1.600v (typ.) @25 2.365v (typ.) @-40 0.717v (typ.) @100 analog output temp. coefficient : -11.77m / (typ.) analog output temp. range : -40 ?? +100 ?? analog temperature accuracy : 3.5 alarm temperature : 70 4.5 alarm hysteresis : 5 (typ.) alarm output configuration : n-channel open-drain alarm output logic : active low alarm low power consumption : 3.5 a (typ.) @25 packages : uspn-4, ssot-24 environmentally friendly : eu rohs compliant, pb free typical application circuit etr0902-004 a pplications ? ? base temperature monitoring on mobile devices ? ? internal temperature monitoring on small electronic device ? ? temperature monitoring (lcd, module) ? ? temperature control for fan typical performance characteristics c l alarm output c in v ss v dout v aout r pull vpull-up analog output v bat v dd xc3101ac70 500 1000 1500 2000 2500 -50 -25 0 25 50 75 100 125 ambient temperature: ta [] analog output voltage:v aout [mv] v dd =2.7v,i aout =1ua c in =0.1f(ceramic),c l =0.1uf(ceramic)
2/13 xc3101 series pin configuration pin assignment pin number uspn-4 ssot-24 pin name functions 2 1 v dd power supply input 1 2 v ss ground 4 3 v dout alarm output 3 4 v aout analog output product classification ordering information product name alarm temperature (*2) hysteresis width (*3) package order unit xc3101ac70nr-g (*1) 70 5 ssot-24 3,000/reel xc3101ac707r-g (*1) 70 5 uspn-4 5,000/reel product name hysteresis width description xc3101aa 0 (typ.) semi-custom xc3101ab 2.4 (typ.) semi-custom xc3101ac 5 (typ.) standard (*1) the ?-g? suffix indicates that the products are halogen and antimony free as well as being fully rohs compliant. (*2) for other alarm temperature besides 70 ? , please ask torex sales contacts. optional setting range is 50 ?? 95 ? . (*3) the hysteresis width selections are available in 5 and 2 other optional for alarm temperature.
3/13 xc3101 series block diagram absolute maximum ratings parameter symbol ratings units input voltage v dd v ss -0.3 +7.0 v analog output voltage v aout v ss -0.3 v dd +0.3 v alarm output voltage v dout v ss v ss +7.0 v output current i dout , i aout 30 ma uspn-4 100 power dissipation ssot-24 pd 150 mw operating ambient temperature ta - 4 0 +100 storage temperature ts t g - 5 5 +125 *diodes inside the circuit are an esd protection diode and a parasitic diode. ta = 2 5 ?
4/13 xc3101 series electrical characteristics xc3101ac70 parameter symbol conditions min. typ. max. units circuit power input range v dd -40 Q ta Q 100 2.7 - 5.5 v - supply current i dd v dd =3.6v, no load - 3.5 6 a ta = - 4 0 , v dd =2.7v 5.5v, i aout =10 a 2324 2365 2406 mv ta = 2 5 , v dd =2.7v 5.5v, i aout =10 a 1559 1600 1641 mv analog output voltage v aout ta=100 , v dd =2.7v 5.5v, i aout =10 a 676 717 758 mv analog output voltage temperature coefficient d v aout /dt v dd =2.7v 5.5v, i aout =10 a -12.52 -11.77 -11.08 mv/ linearity margin error v dd =2.7v 5.5v, i aout =10 a - 0.4 - % load regulation v o / i o 1 a Q i aout Q 1 a - 5 10 mv analog output current i aout v dd =2.7v 5.5v 1 - - ma alarm temperature t det v dd =2.7v 5.5v, i aout =10 a change from low temperature to high temperature 65.5 70.0 74.5 alarm temperature hysteresis width t hys v dd =2.7v 5.5v, i aout =10 a t det -6.5 t det -5 t det -3.5 alarm output current i dout v dd =2.7v ,v dout =0.3v , v aout =v ss n-ch open drain output 1 - - ma alarm output leakage current i doutleak v dd =5.5v, v dout =5.5v, v aout =2.5v - 0.001 0.2 a note: (*1) the value is specified in design values under shipping inspection at a norma l temperature and a high temperature. ta -40 100 (*1)
5/13 xc3101 series a v dout v dd v aout v ss c in :0.1uf a v dout v dd v aout v ss c in :0.1uf v dout v dd v aout v ss v v a c in :0.1uf c l :0.1uf i aout r pull :220k test circuits circuit ? circuit ? circuit ? circuit ?
6/13 xc3101 series ? operational explanation a small ratio of the analog output (v aout ) of the xc3101 series is fed back to one in put of the error amplifier via the voltage divider formed by the r 1x and r 1y resistances. the error amplifier compares this feedback voltage with the voltage of the internal temperature sensor that is connected to its other input, and the resulting output signal from the error amplifier driv es the pch-mos transistor that is connected between the v dd and v aout pins. this cycle of events stabilizes the v aout voltage via negative feedback. the internal tem perature sensor is controlle d so that the voltage changes on a fixed temperature slope with respect to changes of ambient temperature, and a voltage with a fixed temperatur e slope is thereby output from the analog output (v aout ). by comparing the internal voltage reference ?which has a small temperature slope- with the voltage, divided by r 1x and r 1y , of the analog output (v aout ) ?which has a fixed temperature slope-, the comparator outputs a voltage that turns the nch-mos transistor on and off. since this nch-mos transistor is connected to the v dout pin, we actually control the alarm output voltage (v dout ). due to its fixed temperature slope over the temperat ure range of -40c to 100c, the analog output (v aout ) of the xc3101 series outputs a voltage that varies linearly with cha nges in ambient temperature. for the xc3101a type, whose temperature slope is -11.77mv/c (typical ), the analog output voltage at ta=25c is 1.6v (t ypical). the temperature accuracy by means of the analog output voltage is 3.5c. the alarm output (v dout ) of the xc3101 series holds the alarm output voltage at low (v ss potential) when the ambient temperature rises and the alarm temperature -a threshold se t inside the ic- is exceeded. when the ambient temperature drops below the alarm temperature by an amount that is bigg er than the hysteresis width, the alarm output voltage goes high (pull-up voltage). the alarm output pin is an nch op en drain output, and thus when using alarm output, connect a pull-up resistor to pull the voltage up to the desired voltage. if not using alarm output, pull the alarm output pin down to th e vss potential. to stabilize the operation of the xc3101 series, connect a 0.1 f or higher output capacitor (c l ) between the v aout and v ss pins. to stabilize the input power supply, connect a 0.1 f or higher input capacitor (c in ). xc3101 series
7/13 xc3101 series ? notes on use 1. please use this ic within the stated maximum ratings. for temporary, transitional voltage drop or voltage rising phenomenon, the ic is liable to malfunction should the ratings be exceeded. 2. when the wiring impedance is high, noise wraparound due to the output current may cause analog output or alarm output operation to become unstable. sufficiently strengthen the v dd and gnd wiring. 3. the input capacitor c in and the output capacitor c l should be placed to the as close as possible with a shorter wiring. 4. do not use the xc3101 series with a voltage lower than v ss applied to the alarm output pin (v dout ). 5. if vin changes sharply, the analog out put will also change sharply, and malfuncti oning of the alarm output may result. in this event, adjust the slew-rate to less than 2 v/ms by increasing the input capacitor (c in ) or other means. 6. torex places an importance on improv ing our products and its reliability. however, by any possibility, we would request user fail- safe design and post-aging treatment on system or equipment.
8/13 xc3101 series ? typical performance characteristics (1)supply current vs. ambient temperature (2)analog output vol tage vs. ambient temperature (3)analog output temperature err or vs. ambient temperature (4) linearity margin error vs. ambient temperature (5) alarm output voltage vs. ambient temperature xc3101ac70 2.0 2.5 3.0 3.5 4.0 4.5 5.0 -50 -25 0 25 50 75 100 125 ambient temperature: ta [] supply current:i dd [a] v dd =3.6v v dd =5.5v xc3101ac70 500 1000 1500 2000 2500 -50 -25 0 25 50 75 100 125 ambient temperature: ta [] analog output voltage:v aout [mv] v dd =2.7v,i aout =1ua c in =0.1f(ceramic),c l =0.1uf(ceramic) xc3101ac70 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 60 62 64 66 68 70 72 74 76 ambient temperature: ta [] alarm output voltage:v dout [v] v dd =2.7v,i aout =1ua,vpull-up=0.5v c in =0.1f(ceramic),c l =0.1uf(ceramic),rpull=220k xc3101ac70 -4.0 -2.0 0.0 2.0 4.0 -50 -25 0 25 50 75 100 125 ambient temperature: ta [] analog output temperature error [] v dd =2.7v,i aout =1ua c in =0.1f(ceramic),c l =0.1uf(ceramic) xc3101ac70 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 -50 -25 0 25 50 75 100 125 ambient temperature: ta [] linearity margin error [%] v dd =2.7v,i aout =1ua c in =0.1f(ceramic),c l =0.1uf(ceramic)
9/13 xc3101 series ? typical performance characteristics (continued) (6) analog output voltage vs. analog output current (7) alarm output curren t vs. ambient temperature (8) alarm out put current vs. input voltage xc3101ac70 1560 1580 1600 1620 1640 0 0.3 0.6 0.9 1.2 1.5 analog output current :i aout [ma] analog output voltage :v aout [mv] ta=25,v dd =2.7v c in =0.1f(ceramic),c l =0.1uf(ceramic) xc3101ac70 600 650 700 750 800 0 0.3 0.6 0.9 1.2 1.5 analog output current :i aout [ma] analog output voltage :v aout [mv] ta=100,v dd =2.7v c in =0.1f(ceramic),c l =0.1uf(ceramic) xc3101ac70 0.0 1.0 2.0 3.0 4.0 5.0 6.0 2.5 3 3.5 4 4.5 5 5.5 input voltage:v dd [v] alarm output current: i dout [ma] ta=100,v dout =0.3v,v aout =v ss c in =0.1f(ceramic),c l =0.1uf(ceramic) xc3101ac70 0.0 1.0 2.0 3.0 4.0 5.0 6.0 70 80 90 100 ambient temperature: ta [] alarm output current: i dout [ma] v dd =2.7v,v dout =0.3v,v aout =v ss c in =0.1f(ceramic),c l =0.1uf(ceramic) xc3101ac70 2320 2340 2360 2380 2400 0 0.3 0.6 0.9 1.2 1.5 analog output current :i aout [ma] analog output voltage :v aout [mv] ta=-40,v dd =2.7v c in =0.1f(ceramic),c l =0.1uf(ceramic)
10/13 xc3101 series ? packaging information ? ssot-24 unit: mm ? uspn-4 unit: mm 0.90.05 1.20.05 1pin indent 0.38 +0.02 -0.03 12 43 0.20.05 c0. 05 (0.55) 0.250.05 0.4250.05 uspn-4 package 2.00.1 0.125 +0.1 -0.05 1.30.2 0.25 +0.15 -0.1 0 +0.1 -0 0.35 +0.15 -0.1 0.05 0.25 +0.15 -0.1 0.25 +0.15 -0.1
11/13 xc3101 series ? packaging information (continued) ? uspn-4 reference pattern layout ? uspn-4 reference metal mask design unit: mm 1 0.25 0.25 c0. 075 0.125 0.55 0.125 0.2 0.2 c0.0 5 0.1 0.1 0.55 2 3 4 1 2 3 4
12/13 xc3101 series ? marking rule ? ssot-24 represents product series mark product series n xc3101******-g * ssot-24 has the orientation bar marked in the bottom. ? represents production registered number 0 ? 0, a ? z are in an order. (g, i, j, o, q, w excluded.) * no character inversion used. ?? represents production lot number. 01 09, 0a 0z, 11 9z, a1 a9, aa ? az z b1 ? zz repeated. ?????? (g, i, j, o, q, w excluded.) * no character inversion used. ? uspn-4 represents product series mark product series d xc3101******-g ?? represents production registered number 01 ? 09, 0a ? 0z, 11 ? 9z, a1 ? a9, aa ? az, b1 ? zz are in an order. (g, i, j, o, q, w excluded.) * no character inversion used. ?? represents production lot number. 01 09, 0a 0z, 11 9z, a1 a9, aa ? az z b1 ? zz repeated. ?????? (g, i, j, o, q, w excluded.) * no character inversion used. (`) 1 2 3 4 1 2 4 3 ? ? (with the orientation bar at the bottom)
13/13 xc3101 series 1. the products and product specifications cont ained herein are subject to change without notice to improve performance characteristic s. consult us, or our representatives before use, to confirm that the informat ion in this datasheet is up to date. 2. we assume no responsibility for any infri ngement of patents, pat ent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this datasheet. 4. the products in this datasheet are not devel oped, designed, or approved for use with such equipment whose failure of malfuncti on can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. atomic energy; aerospace; transpor t; combustion and associated safety equipment thereof.) 5. please use the products listed in this datasheet within the specified ranges. should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. we assume no responsibility for damage or loss due to abnormal use. 7. all rights reserved. no part of this dat asheet may be copied or reproduced without the prior permission of torex semiconductor ltd.

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