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19-6470; rev 0; 9/12 typical operating circuit general description the MAX14571/max14572/max14573 adjustable over - voltage and overcurrent-protection devices are ideal to protect systems against positive and negative input voltage faults up to q 40v and feature low 100m i (typ) r on fets. the overvoltage-protector (ovp) feature protects voltages between 6v and 36v, while the undervoltage-protector (uvp) feature protects voltages between 4.5v and 24v. the overvoltage-lockout (ovlo) and undervoltage-lockout (uvlo) thresholds are set using optional external resistors. the factory-preset internal ovlo threshold is 33v (typ) and the preset internal uvlo threshold is 19.2v (typ). the ics also feature programmable current-limit protec - tion up to 4.2a. once current reaches the threshold, the MAX14571 turns off after the 20.7ms (typ) blanking time and stays off during the retry period. the max14572 latches off after the blanking time, and the max14573 limits the current continuously. in addition, these devices feature reverse current and thermal-shutdown protec - tion. the ics are available in a small 14-pin tssop (5mm x 6.5mm) package and are specified over the extended -40 n c to +85 n c temperature range. applications industrial equipment consumer electronics marine equipment battery-powered applications features s wide 4.5v to 36v operating input range s adjustable ovlo and uvlo thresholds 3% accurate preset thresholds automatic internal and external selection s programmable forward current limit adjustable current limit up to 4.2a 15% accuracy limit s 100m (typ) on-resistance fet s dual-enable inputs high-voltage-capable input hven microprocessor input en s reverse current flow control input rien s thermal-shutdown protection + denotes a lead(pb)-free/rohs-compliant package. * future productcontact factory for availability. t = tape and reel. ** ep = exposed pad. ordering information in in in uvlo ovlo set1 out out v pullup out en rien gnd r1 r2 r4 r3 system input note: r1, r2, r3, and r4 are only required for adjustable ovlo/uvlo; otherwise, connect uvlo/ovlo to gnd. system v power c in c out flag hven MAX14571 max14572 max14573 part temp range pin- package overcurrent protection MAX14571 eud+t* -40 n c to +85 n c 14 tssop- ep** autoretry max14572 eud+t -40 n c to +85 n c 14 tssop- ep** latchoff max14573 eud+t* -40 n c to +85 n c 14 tssop- ep** continuous for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxims website at www.maximintegrated.com. adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573 evaluation kit available
2 stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (all voltages referenced to gnd.) in, hven ................................................................ -40v to +40v in to out ............................................................... -40v to +40v out ...................................................................... -0.3v to +40v ovlo, uvlo, flag , en, rien ............................ -0.3v to +6.0v current into in (dc operating) (note 1) .............. .4.2a seti ........................... .-0.3v to min(v in , 1.22v) + 0.3v continuous power dissipation (t a = +70 n c) tssop (derate 25.6mw/ n c above +70 n c) ........ .2051.3mw operating temperature range .......................... -40 n c to +85 n c junction temperature ........................................ ..+150 n c storage temperature range ............................ -65 n c to +150 n c lead temperature (soldering, 10s) ................. +300 n c soldering temperature (reflow) ....................... +260 n c electrical characteristics ( v in = 4.5v to 36v, t a = -40 n c to +85 n c, unless otherwise noted. typical values are at v in = 24v, t a = +25 n c, r iset = 12k i .) (note 3) absolute maximum ratings package thermal characteristics (note 2) note 1 : dc current is also limited by the thermal design of the system. tssop junction-to-ambient thermal resistance ( b ja ) ........... +39 n c/w junction-to-case thermal resistance ( b jc ) .................. +3 n c/w note 2 : package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a four-layer board. for detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial . parameter symbol conditions min typ max units in voltage range v in 4.5 36 v shutdown input current i shdn v en = 0v, v hven = 5v 15 f a shutdown output current i off v out = 0v 2 f a reverse input current i in_rvs v in = -40v, v out = v gnd = 0v -35 f a supply current i in v in = 15v, r iset = 12k i 490 700 f a internal overvoltage trip level v ovlo v in rising 32 33 34 v v in falling 32 internal undervoltage trip level v uvlo v in falling 17.5 18.5 19.5 v v in rising 18.2 19.2 20.2 overvoltage-lockout hysteresis % of typical ovlo 3 % external ovlo adjustment range (note 4) 6 36 v external ovlo select voltage v ovlosel 0.3 0.50 v external ovlo leakage current i ovlo_leak (note 5) v ovlo < 1.2v -100 +100 na external uvlo adjustment range 4.5 24 v external uvlo select voltage v ovlosel 0.3 0.50 v external uvlo leakage current i uvlo_leak (note 5) -100 +100 na bg reference voltage v bg 1.186 1.210 1.234 v maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
3 electrical characteristics (continued) ( v in = 4.5v to 36v, t a = -40 n c to +85 n c, unless otherwise noted. typical values are at v in = 24v, t a = +25 n c, r iset . = 12k i ) (note 3) parameter symbol conditions min typ max units internal fets internal fets on-resistance r on i load = 100ma, v in r 8v 100 160 m i current-limit adjustment range i lim (notes 5, 6) 0.7 4.2 a current-limit accuracy -15 +15 % flag assertion drop voltage threshold v fa increase (v in - v out ) drop until flag asserts, v in = 24v 560 mv reverse current blocking threshold v rib v out - v in 40 100 160 mv reverse blocking leakage current i rbl v out - v in > 160mv, current into out 400 600 f a flag output flag output logic-low voltage i sink = 1ma 0.4 v flag output leakage current v in = v flag = 5v, flag desasserted 2 f a logic input hven threshold voltage v hven _ th 1 2 3.5 v hven threshold hysteresis 2 % hven input leakage current i hven _ leak v hven = 36v 26 40 f a hven input reverse leakage current i hven _ rleak v in = v hven = -36v -45 -27 f a en, rien input logic-high v ih 1.4 v en, rien input logic-low v il 0.4 v en, rien input leakage current i en_leak, i rien_leak v en = v rien = 5.0v -1 +1 f a thermal protection thermal shutdown t jc_max low-to-high temperature 150 n c thermal-shutdown hysteresis t jc_hyst high-to-low temperature 30 n c timing characteristics (note 7) switch turn-on time t on from off to in, see table 1. r load = 240 i , c out = 470 f f. 25 ms switch turn-off time t off r load = 47 i 3 f s overvoltage switch turn-off time t off_ovp v in > v ovlo to v out = 80% of v ovlo , r load = 47 i , r seti = 10k i 3 f s overcurrent switch turn-off time t off_ocp i in > i lim , after t blank , i lim = 1a 3 f s in debounce time t deb v in changes from 0v to greater than v uvlo to v out = 10% of v in 15.0 16.7 18.4 ms blanking time t blank 18.6 20.7 22.8 ms autoretry time t retry after blanking time from i out > i lim to flag clear (deassertion) (note 8) 540 600 660 ms maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
4 electrical characteristics (continued) ( v in = 4.5v to 36v, t a = -40 n c to +85 n c, unless otherwise noted. typical values are at v in = 24v, t a = +25 n c, r iset . = 12k i ) (note 3) note 3: all units are 100% production tested at t a = +25 n c. limits over the operating temperature range are guaranteed by design and characterization; not production tested. note 4: not production tested, user settable. see overvoltage/undervoltage lockout instructions. note 5: guaranteed by design; not production tested. uvlo and ovlo are internally clamped to bg reference voltage. note 6: the current limit can be set below 700ma with a decreased accuracy. note 7: all timing is measured using 20% and 80% levels. note 8: the ratio between autoretry time and blanking time is fixed and equal to 30. timing diagrams figure 1. autoretry fault diagram t blank t blank t blank t blank t retry t retry t retry note: time not in scal e autoretry versions out current limit load current flag the device goes to thermal shutdown mode the device comes out of thermal shutdown mode parameter symbol conditions min typ max units esd protection in human body model, in bypassed to gnd with a 1 f f low-esr ceramic capacitor q 15 kv maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
5 figure 2. latchoff fault diagram figure 3. continuous fault diagram latch version out current limit load current the device goes to thermal shutdown mode the device comes out of thermal shutdown mode note: time not in scale input or en cycle t blank t blank flag out current limit load current flag t blank note: time not in scale the device goes to thermal shutdown mode the device comes out of thermal shutdown mode continuous versions maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
6 typical operating characteristics (t a = +25c, unless otherwise noted.) figure 4. debounce timing in supply current vs. supply voltage MAX14571 toc01 supply voltage (v) supply current (ma) 35 30 20 25 15 10 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 54 0 seti unconnected t a = +85c t a = -40c t a = +25c in supply current vs. temperature MAX14571 toc02 temperature (c) supply current (ma) 60 35 10 -15 0.1 0.2 v in = +24v 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 -40 85 seti unconnected normalized on-resistance vs. supply voltage MAX14571 toc03 supply voltage (v) normalized on-resistance 21 18 15 0.8 0.9 1.0 1.1 1.2 1.3 0.7 12 24 t a = -40c t a = +25c t a = +85c i out = 100ma v in switch status uvlo threshold on off < t deb < t deb t deb note: time not in scale maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
7 typical operating characteristics (continued) (t a = +25c, unless otherwise noted.) normalized on-resistance vs. temperature MAX14571 toc04 temperature (c) normalized on-resistance 60 35 10 -15 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 0.5 -40 85 v in = +24v normalized current limit vs. supply voltage MAX14571 toc05 supply voltage (v) normalized current li mit 32 29 23 26 11 14 17 20 8 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 0.90 53 5 r seti = 17.4k i normalized curent limit vs. temperature MAX14571 toc06 temperature (c) 60 35 10 -15 -40 85 normalized current li mit 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 0.90 v in = +24v normalized ovlo threshold vs. temperature MAX14571 toc07 temperature (c) 60 35 10 -15 -40 85 normalized ovlo threshold 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 0.90 v in = +24v shutdown reverse current vs. temperature MAX14571 toc10 temperature (c) shutdown supply current (a) 60 35 10 -15 5 10 15 20 25 30 35 0 -40 85 v in = -24v en = low hven = 100k i pullup to v in out = ovlo = uvlo = gnd normalized uvlo threshold vs. temperature MAX14571 toc08 temperature (c) 60 35 10 -15 -40 85 normalized uvlo threshold 0.92 0.94 0.96 0.98 1.00 1.02 1.04 1.06 1.08 1.10 0.90 v in = +24v turn-on time vs. temperature MAX14571 toc11 temperature (c) turn-on time (ms) 60 35 10 -15 2 4 6 8 10 12 14 16 18 20 0 -40 85 en transition to 10% of v in shutdown supply current vs. temperature MAX14571 toc09 temperature (c) shutdown supply current (a) 60 35 10 -15 5 10 15 20 25 0 -40 85 v in = +24v en = low hven = 100k i pullup to v in out = ovlo = uvlo = gnd turn-off time vs. temperature MAX14571 toc12 temperature (c) turn-off time (s) 60 35 10 -15 10 20 30 40 50 60 70 80 90 100 0 -40 85 en transition to 90% of v out c out = 10f r load = 480 i maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
8 pin configuration pin description 14 13 12 11 10 9 8 1 2 3 4 5 6 7 out out out uvlo in in in top view MAX14571 max14572 max14573 en rien gnd seti ovlo *ep tssop *connect exposed pad to gnd flag hven + pin name function 1, 2, 3 in overvoltage-protection input. bypass in to gnd with a 1 f f ceramic capacitor placed as close as possible to the device. use a 1 f f, low-esr ceramic capacitor to enable q 15kv (hbm) esd protection on in. for hot-plug applications, see the applications information section. 4 uvlo externally programmable undervoltage-lockout threshold. connect uvlo to gnd to use the default internal uvlo threshold. connect uvlo to an external resistor-divider to define a threshold externally and override the preset internal uvlo threshold. 5 ovlo externally programmable overvoltage-lockout threshold. connect ovlo to gnd to use the default internal ovlo threshold. connect ovlo to an external resistor-divider to define a threshold externally and override the preset internal ovlo threshold. 6 seti overload-current limit adjust. connect a resistor from seti to gnd to program the overcurrent limit. if seti is unconnected, the current limit is set to 0a. if seti is connected to gnd, the fets turn off and flag is asserted. do not connect more than 10pf to seti. 7 gnd ground 8 hven active-low enable input. hven is high-voltage-capable enable input. drive hven low for normal operation. drive hven high to disable the device. hven has up to 36v overvoltage protection at the input (table 1). 9 rien reverse-current enable input. connect rien to gnd to disable the reverse-current flow protection. connect rien to logic-high to activate the reverse-current flow protection. 10 en active-high enable input. drive en high for normal operation. drive en low to disable the device (table 1). 11 flag open-drain, fault indicator output. flag goes low when the fault duration exceeds the blanking time, reverse current is detected, thermal-shutdown mode is active, ovlo threshold is reached, or seti is connected to gnd. 12, 13, 14 out output voltage. output of internal fets. bypass out to gnd with a 1 f f ceramic capacitor placed as close as possible to the device. for a long output cable or inductive lead, see the applications information section. ep exposed pad. internally connected to gnd. connect ep to a large ground plane to maximize thermal performance. do not use ep as the single gnd connection. maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
9 functional diagram n reverse-input reverse-current protection control logic thermal shutdown v bg ovlo seti gnd uvlo in in in out out out rien flag en hven v sel MAX14571 max14572 max14573 v sel maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
10 detailed description the MAX14571/max14572/max14573 are adjust - able overvoltage and overcurrent-protection devices designed to protect systems against positive and nega - tive input voltage faults up to q 40v, and feature low 100m i (typ) on-resistance fets. if the input voltage exceeds the ovlo threshold or falls below the uvlo, the internal fets are turned off to prevent damage to the protected components. if the ovlo or the uvlo pin is set below the external ovlo or uvlo select thresholds (v ovlosel and v uvlosel ), the device automatically selects the internal q 3% (typ) accurate trip thresholds. the internal ovlo threshold is preset to 33v (typ), and the internal uvlo threshold is preset to 19.2v (typ). the ics feature programmable current-limit protection up to 4.2a. once current reaches the threshold, the MAX14571 turns off after 20.6ms (typ) blanking time and stays off during the retry period. the max14572 latches off after the blanking time, and the max14573 limits the current continuously. programmable current limit/threshold a resistor from seti to gnd sets the current limit/thresh - old for the switch (see the setting the current limit/ threshold section). if the output current is limited at the current threshold value for a time equal to or longer than t blank , the output flag asserts and the MAX14571 enters the autoretry mode, the max14572 latches off the switch, and the max14573 enters the continuous current-limit mode. autoretry (MAX14571) when the current threshold is reached, the t blank timer begins counting. the flag asserts if the overcurrent condition is present for t blank . the timer resets if the overcurrent condition disappears before t blank has elapsed. a retry time delay, t retry , is started immediately after t blank has elapsed and during t retry time, the fets are off. at the end of t retry , the fets are turned on again. if the fault still exists, the cycle is repeated and the flag stays low. when the fault is removed, the fets stay on. if the die temperature exceeds +150 n c (typ) due to self-heating, the MAX14571 enables thermal shut - down until the die temperature drops by approximately 30 n c (figure 1). the autoretry feature reduces the system power in case of overcurrent or short-circuit conditions. during t blank time, when the switch is on, the supply current is held at the current limit. during t retry time, when the switch is off, there is no current through the switch. thus, the output current is much less than the programmed cur - rent limit. calculate the average output current using the following equation: blank load lim blank retry t ii tt ?? = ?? + ?? with a 20.7ms (typ) t blank and 600ms (typ) t retry , the duty cycle is 3.3%, resulting in a 96.7% power saving. latch-off (max14572) when the current threshold is reached, the t blank timer begins counting. the flag asserts if the overcurrent condition is present for t blank . the timer resets when the overcurrent condition disappears before t blank has elapsed. the switch turns off and stays off if the overcurrent condition continues beyond the blanking time. to reset the switch, either toggle the control logic en or hven or cycle the input voltage. if the die tem - perature exceeds +150 n c (typ) due to self-heating, the max14572 latches off (figure 2.) continuous current limit (max14573) when the current threshold is reached, the max14573 limits the output current to the programmed current limit. the flag asserts if the overcurrent condition is present for t blank and deasserts when the overload condition is removed. if the die temperature exceeds +150 n c (typ) due to self-heating, the max14573 enables thermal shutdown until the die temperature drops by approximately 30 n c (figure 3). reverse-current enable (rien) this feature disables the reverse-current protection and enables reverse-current flow from out to in. the reverse-current enable feature is useful in applications with inductive loads. fault flag output flag is an open-drain fault indicator output and requires an external pullup resistor to a dc supply. flag goes low when any of the following conditions occur: ? the blanking time has elapsed. ? the reverse-current protection has tripped. ? the die temperature exceeds +150 n c. ? seti is connected to ground. ? ovlo threshold is reached. maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
11 thermal-shutdown protection the MAX14571/max14572/max14753 have a thermal- shutdown feature to protect the device from overheating. the device turns off and the flag asserts when the junc - tion temperature exceeds +150 n c (typ). the devices exit thermal shutdown and resume normal operation after the junction temperature cools by 30 n c (typ), except for the max14572 which remains latched off. the thermal limit behaves similarly to the current limit. for the MAX14571 (autoretry), the thermal limit works with the autoretry timer. when the device comes out of the ther - mal limit, it starts after the retry time. for the max14572 (latch off), the device latches off until power or en cycle. for the max14573 (continuous), the device only disables while the temperature is over the limit. there is no blank - ing time for thermal protection. overvoltage lockout (ovlo) the devices have a 33v (typ) preset ovlo threshold when the voltage at ovlo is set below the external ovlo select voltage (v ovlosel ). connect ovlo to gnd to activate the preset ovlo threshold. connect the external resistors to the ovlo pin as shown in the typical operating circuit to externally adjust the ovlo threshold. use the following equation to adjust the ovlo threshold. the recommended value for r3 is 2.2m i : ovlo bg r3 v v1 r4 ?? = + ?? ?? undervoltage lockout (uvlo) the devices have a 19.2v (typ) preset uvlo threshold when the voltage at uvlo is set below the external ovlo select voltage (v uvlosel ). connect uvlo to gnd to activate the preset uvlo threshold. connect the external resistors to the uvlo pin as shown in the typical operating circuit to externally adjust the uvlo threshold. use the following equation to adjust the uvlo threshold. the recommended value for r1 is 2.2m i : uvlo bg r1 v v1 r2 ?? = + ?? ?? switch control there are two independent enable inputs ( hven and en) for the devices. hven is a high-voltage-capable input. toggle hven or en to reset the fault condition once a short circuit is detected and the devices shut down (table 1). input debounce protection the ics feature input debounce protection. when the input voltage is higher than the uvlo threshold voltage for a period greater than the debounce time (t deb ), the internal fets are turned on. this feature is intended for applications where the en or hven signal is present when the power supply ramps up (figure 4). applications information setting the current limit/threshold a resistor from seti to ground programs the current limit/ threshold value for the devices. leaving seti uncon - nected selects a 0a current limit/threshold. connecting seti to ground asserts flag . use the following formula to calculate the current limit: ?= seti lim 11500 r (k ) i (ma) in bypass capacitor connect a minimum of 1 f f capacitor from in to gnd to limit the input voltage drop during momentary output short-circuit conditions. larger capacitor values further reduce the voltage undershoot at the input. hot-plug in in many system powering applications, an input filter - ing capacitor is required to lower the radiated emission, enhance the esd capability, etc. in hot-plug applica - tions, parasitic cable inductance, along with the input capacitor, cause overshoot and ringing when the pow - ered cable is connected to the input terminal. this effect causes the protection device to see almost twice the applied voltage. an input voltage of 24v can easily exceed the absolute maximum rating of 40v, which may permanently damage the device. a transient voltage suppressor (tvs) is often used for industrial applications to protect the system from these conditions. we recom - mend using a tvs that is capable of limiting surge to 40v placed close to the input terminal. table 1. switch control hven en switch status 0 0 on 1 0 off 0 1 on 1 1 on maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
12 out bypass capacitor for stable operation over the full temperature range and over the entire programmable current-limit range, connect a 1 f f ceramic capacitor from out to ground. excessive output capacitance can cause a false over - current condition due to decreased dv/dt across the capacitor. calculate the maximum capacitive load (c max ) value that can be connected to out by using the following formula: = lim blank(min) max in i (ma) x t (ms) c (f) v (v) for example, for v in = 24v, t blank = 15ms, and i lim = 4.2a, c max equals 2625 f f. output freewheeling diode for inductive hard short to ground in applications that require protection form a sudden short to ground with an inductive load or long cable, a schottky diode between the out terminal and ground is recommended. this is to prevent a negative spike on out due to the inductive kickback during a short-circuit event. thermal-shutdown protection the MAX14571/max14572/max14573 have a thermal- shutdown feature to protect the device from overheat - ing. the device turns off and the flag asserts when the junction temperature exceeds +150c (typ). the devices exit thermal shutdown and resume normal operation after the junction temperature cools by 30c (typ), except for the max14572, which remains latched off. the thermal limit behaves similar to the current limit. for the MAX14571 (autoretry), the thermal limit works with autoretry timer. when the device comes out of the ther - mal limit, it starts after the retry time. for the max14572 (latch off), the device latches off until power or en cycle. for the max14573 (continuous), the device only disables while the temperature is over the limit. there is no blank - ing time for thermal protection. layout and thermal dissipation to optimize the switch response time to output short- circuit conditions, it is very important to keep all traces as short as possible to reduce the effect of undesirable parasitic inductance. place input and output capaci - tors as close as possible to the device (no more than 5mm). in and out must be connected with wide short traces to the power bus. during normal operation, the power dissipation is small and the package temperature change is minimal. if the output is continuously shorted to ground at the maximum supply voltage, the switches with the autoretry option do not cause thermal-shutdown detection to trip: in(max) out(max) blank (max) retry blank v i t p t t = + attention must be given to the max14573 continuous current-limit version when the power dissipation dur - ing a fault condition can cause the device to reach the thermal-shutdown threshold. thermal vias from the exposed pad to ground plane are highly recommended to increase the system thermal capacitance while reduc - ing the thermal resistance to the ambient. esd test conditions the devices are specified for q 15kv (hbm) typical esd resistance on in when in is bypassed to ground with a 1 f f low-esr ceramic capacitor. no capacitor is required for q 2kv (hbm) typical esd on in. all the pins have a q 2kv (hbm) typical esd protection. hbm esd protection figure 5a shows the human body model, and figure 5b shows the current waveform it generates when dis - charged into a low impedance. this model consists of a 100pf capacitor charged to the esd voltage of interest, which is then discharged into the device through a 1.5k i resistor. maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
13 figure 5a. human body esd test model figure 5b. human body current waveform chip information process: bicmos package information for the latest package outline information and land patterns (foot - prints), go to www.maximintegrated.com/packages . note that a +, #, or - in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status. charge-current- limit resistor discharge resistance storage capacitor c s 100pf r c 1m i r d 1.5k i high- voltage dc source device under test i p 100% 90% 36.8% t rl time t dl current waveform peak-to-peak ringing (not drawn to scale) i r 10% 0 0 amperes package type package code outline no. land pattern no. 14 tssop-ep u14e+3 21-0108 90-0119 maxim integrated adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573
maxim integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim integrated product. no circuit patent licenses are implied. maxim integrated reserves the right to change the circuitry and specifications without notice at any time. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidance. 14 maxim integrated 160 rio robles, san jose, ca 95134 usa 1-408-601-1000 ? 2012 maxim integrated products, inc. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. revision history revision number revision date description pages changed 0 9/12 initial release adjustable overvoltage and overcurrent protectors with high accuracy MAX14571/max14572/max14573

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