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? 2001-2014 microchip technology inc. ds20001434k-page 1 tc54 features: 2.0% detection thresholds small packages: 3-pin sot-23a, sot-89, and to-92 low current drain: 1 a, typical wide detection range: 1.1v to 6.0v wide operating voltage range: 0.7v to 10v applications: battery voltage monitoring microprocessor reset system brown-out protection switching circuit in battery backup level discriminator functional block diagram general description: the tc54 series are cmos voltage detectors espe- cially well-suited for battery-powered applications because of their extremely low 1 a operating current and small surface-mount packaging. each part is laser- trimmed to the desired threshold voltage, which can be specified from 1.4v to 6.0v with a 2% tolerance. the tc54 is available with either an open-drain or com- plementary output stage. during operation, the output (v out ) remains in the logic-high state as long as v in is greater than the specified threshold voltage (v det C ). when v in falls below v det C , the output is driven to a logic-low. v out remains low until v in rises above v det C by an amount v hyst , when it resets to a logic- high state. package types device features v out v ss + C v in v ref tc54vc only tc54vn has open-drain output. tc54vc has complementary (push-pull) output. 1 3 2 v in v ss v out tc54 3-pin sot-89 note: 3-pin sot-23a is equivalent to the eiaj sc-59. 3-pin to-92 12 3 v ss v in v out v in v out v ss 3 12 tc54 3-pin sot-23a v in device output reset delay std. trip points ( 1 ) (typical) type state tc54vn open-drain active low no 1.4v, 2.1v, 2.7v, 2.9v tc54vc push-pull active low no 3.0v, 4.2v, 4.3v note 1: custom trip points available. minimum order requirement. information available upon request. voltage detector downloaded from: http:///
tc54 ds20001434k-page 2 ? 2001-2014 microchip technology inc. 1.0 electrical characteristics absolute maximum ratings ? input voltage ...................................................................+12v output current .............................................................. 50 ma output voltage: cmos................(v ss C 0.3v) to (v in + 0.3v) open-drain.....................(v ss C 0.3v) to 12v power dissipation (t a ? 70c): 3-pin sot-23a .......................................................240 mw 3-pin sot-89..........................................................500 mw 3-pin to-92 ............................................................300 mw operating temperature range........................-40c to +85c storage temperature range .........................-65c to +150c ? notice: stresses above those listed under "absolute maxi- mum ratings" may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other c onditions above those indicated in the operation sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. dc characteristics electrical specifications: unless otherwise noted, t a = +25c. parameter symbol min. typ. max. units test conditions operating voltage v in 0.7 10.0 v (v det C ) ? 1.6v 0.7 6.0 v (v det C ) < 1.6v quiescent current i ss 0 . 82 . 7 av in = 2.0v 0 . 93 . 0 v in = 3.0v 1 . 03 . 2 v in = 4.0v 1 . 13 . 6 v in = 5.0v threshold voltage ( note 1 ) v det C 1.37 1.4 1.43 v tc54vx14 2.06 2.1 2.14 tc54vx21 2.65 2.7 2.75 tc54vx27 2.84 2.9 2.96 tc54vx29 2.94 3.0 3.06 tc54vx30 4.12 4.2 4.28 tc54vx42 4.21 4.3 4.39 tc54vx43 n.m-2% n.m n.m+2% tc54vxnm ( note 2 ) hysteresis voltage v hyst 28 70 112 mv v det = 1.4v (typical) 42 105 168 v det = 2.1v (typical) 54 135 216 v det = 2.7v (typical) 58 145 232 v det = 2.9v (typical) 60 150 240 v det = 3.0v (typical) 84 210 336 v det = 4.2v (typical) 86 215 344 v det = 4.3v (typical) q-60% q q+60% v det = (20*q)v (typical) ( note 2 ) output current i out 3.0 7.7 ma v ol = 0.5v, v in = 2.0v 5.0 10.1 v ol = 0.5v, v in = 3.0v 6.0 11.5 v ol = 0.5v, v in = 4.0v 7.0 13.0 v ol = 0.5v, v in = 5.0v -10.0 -2.0 tc54vc only: v oh = v in C 2.1v, v in = 8.0v te m p c o o f ( v det C )t c (v det C ) 100 ppm/c -40c ? t a ? 85c delay time t dly 0 . 2m s v det C ? v out inversion note 1: for other voltage options, please contact your regional microchip sales office. 2: represents all other custom threshold voltage options. downloaded from: http:/// ? 2001-2014 microchip technology inc. ds20001434k-page 3 tc54 figure 1-1: timing diagram. temperature specifications electrical characteristics: unless otherwise indicated, all limits are specified for: v dd =+1.8v to +5.5v, v ss = gnd. parameters sym. min. typ. max. units conditions temperature ranges operating temperature range t a -40 +85 c storage temperature range t a -65 +150 c thermal package resistances thermal resistance, 3l-sot-23a ? ja 3 0 8 c / w thermal resistance, 3l-sot-89 ? ja 131.7 c/w thermal resistance, 3l-to-92 ? ja 1 4 6 c / w v dd output v oh t dly v det C +v hyst output v det downloaded from: http:/// tc54 ds20001434k-page 4 ? 2001-2014 microchip technology inc. 2.0 pin descriptions the descriptions of the pins are listed in tab l e 2 - 1 . table 2-1: pin function table 2.1 digital output (v out ) v out goes low when v in drops below v det C and returns high when v in rises above v det C + v hyst . ( see figure 3-1 ). 2.2 analog input (v in ) v in can be used for power supply monitoring or a voltage level that requires monitoring. 2.3 ground terminal (v ss ) v ss provides the negative reference for the analog input voltage. typically, the circuit ground is used. tc54 symbol description sot-23a sot-89 to-92 11 1 v out digital output 32 2v in analog input 23 3 v ss ground terminal t a b v in analog input downloaded from: http:/// ? 2001-2014 microchip technology inc. ds20001434k-page 5 tc54 3.0 detailed description in normal steady-state operation when v in >v det C , the output will be at a logic-high (see figure 3-1 ). in the case of the tc54vn, this is an open-drain condition. if the input falls below v det C , the output will pull down (logic 0 ) to v ss . generally, v out can pull down to within 0.5v of v ss at rated output current and input voltage. (see section 1.0 ?electrical characteristics? ). the output (v out ) will stay valid until the input voltage falls below the minimum operating voltage (v inmin ) of 0.7v. below this minimum operating voltage, the output is undefined. during power-up (or anytime v in has fallen below v inmin ), v out will remain undefined until v in rises above v inmin . when this occurs, the output will become valid. v out will be in its active-low state, while v inmin ? 2001-2014 microchip technology inc. ds20001434k-page 7 tc54 5.0 packaging information 5.1 package marking information 3-lead sot-23a 2nn example c302 3-lead sot-89 xxxyyww @nnn example e3 31 3-lead to-92 xxxxxx xxxxxx xxxxxx ywwnnn example 54vn 3002 1256 legend: xx...x customer-specific information y year code (last digit of calendar year) yy year code (last 2 digits of calendar year) ww week code (week of january 1 is week 01) nnn alphanumeric traceability code pb-free jedec ? designator for matte tin (sn) * this package is pb-free. the pb-free jedec designator ( ) can be found on the outer packaging for this package. note : in the event the full microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 3 e 3 e downloaded from: http:/// tc54 ds20001434k-page 8 ? 2001-2014 microchip technology inc. ) symbol output voltage bc m o s1 . cc m o s2 . dc m o s3 . ec m o s4 . fc m o s5 . hc m o s6 . ic m o s7 . symbol output voltage l n-channel 1. m n-channel 2. n n-channel 3. p n-channel 4. r n-channel 5. s n-channel 6. t n-channel 7. symbol voltage symbol voltage 0. 06. 6 1. 17. 7 2. 28. 8 3. 39. 9 4. 4 5. 5 3-pin sot-23a 3-pin sot-89 1 1 2 2 4 3 4 3 1 represents output configuration (cmos or nch) and first integer of voltage ex: cmos 3.x = d 2 represents first decimal of output voltage (0-9) ex: cmos 3.x = d 4 4 3 represent assembly lot code and symbol output cc m o s n n-channel symbol voltage 22 . 33 . 44 . 55 . 66 . symbol voltage symbol voltage 0. 05. 5 1. 16. 6 2. 27. 7 3. 38. 8 4. 49. 9 symbol delay time 0n o d e l a y symbol accuracy 1 1.0% (custom) 2 2.0% (standard) 3-pin to-92 8 4 7 3 6 2 5 1 = 54x (fixed) 1 , 2 and 3 4 represents output configuration (cmos or n-ch) ex: cmos 3.x = c 5 represents first integer of detect voltage 6 represents first decimal of detect voltage 7 represents the output delay time represents the device accuracy 8 downloaded from: http:/// ? 2001-2014 microchip technology inc. ds20001434k-page 9 tc54 !"!#$! !% #$ !% #$ # & ! ! !# "'( )*+ ) # &#,$ --#$## .# #$ # / !- 0 # 1/ %## !# ## +22--- 2 / 3# 44"" 4# 5 56 7 5$8 %1 5 4 !1# ()* 6$# ! 4 !1# )* 6, 9 # : ; ( ! !1/ / ; #!%% ; ( 6, <!# " ; ! !1/ <!# " ; : 6, 4 # ; .#4 # 4 ( ; = .# > ; > 4 !/ ; = 4 !<!# 8 ; ( d e e1 2 1 e e1 n b aa1 a2 c l - * ) downloaded from: http:/// tc54 ds20001434k-page 10 ? 2001-2014 microchip technology inc. note: for the most current package drawings, please see the microchip packaging specification located at http://www.microchip.com/packaging downloaded from: http:/// ? 2001-2014 microchip technology inc. ds20001434k-page 11 tc54 % $ 0 l f u r f k l s 7 h f k q r o r j \ ' u d z l q j & |