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UP7536 1 UP7536-ds-f0101, jul. 2012 www.upi-semi.com power multiplexer for usb high side switch ?? ?? ? compliant to usb specifications ?? ?? ? operating range: 4.5 v to 5.5 v ?? ?? ? output voltage switch to 5vsb at s3/s4/s5 ?? ?? ? 200ma continuous load current ?? ?? ? 400m ? ? high side switch ?? ?? ? output voltage switch to 5vcc at s0/s1/s2 ?? ?? ? 1.5a continuous load current ?? ?? ? 80m ? ? high side switch ?? ?? ? low quiescent current: 50ua typical ?? ?? ? low standby current: less than 1ua ?? ?? ? slow turn on and fast turn off ?? ?? ? enable active-high ?? ?? ? ul approved : e316940 ?? ?? ? tuv en60950-1 certification ?? ?? ? cb iec60950-1 certificatioon ?? ?? ? rohs compliant and halogen free the UP7536 is a current limited power multiplexer a cting as a high side switch for usb applications where heavy capacitive loads and short-circuits are likely to be encountered. it switches output voltage to 5vsb at s3/ s4/s5 states with 400m switch and 200ma capacity; to 5vcc at s0/s1/s2 states with 80m switch and 1.5a capacity. this device features an active-high enable control input. soft start function limits the inrush current from supply input when enabled. disabling the device reduces its standby current down to less than 1ua. optimal switch logic according to s3# and 5vcc status ensures seamless output voltage transition. when the output load exceeds the current-limit threshold or a short is present, the UP7536 asserts over current protection and limits the output current to a safe level by driving the power switches into saturation mode. other features include soft-start to limit inrush current during plug-in, thermal shutdown to prevent catastrophic switch failure from high-current loads, under-voltage lockout (uvlo) to ensure that the device remains off unless there is a valid input voltage present. the UP7536 is available in sot23-8l, (p)sop-8l, msop-8l packages. ?? ?? ? notebook and desktop pcs ?? ?? ? usb power management ?? ?? ? acpi power distribution ?? ?? ? hot-plug power supplies rebmunredr oe gakca pg nikrampot 8ama6357p ul 8-32to s2 3s 8wsa6357p ul 8-pos pa 6357pu 8ara6357p ul 8-pos ma 6357pu 8amb6357p ul 8-32to s8 5s 8wsb6357p ul 8-pos pb 6357pu 8arb6357p ul 8-pos mb 6357pu general description applications ordering information features note: upi products are compatible with the current ipc/ jedec j-std-020 requirement. they are halogen-free, rohs compli ant a nd 100% matte tin (sn) plating that are suitable for use in snpb or pb-free soldering processes. upi confidential
UP7536 2 UP7536-ds-f0101, jul. 2012 www.upi-semi.com emanni pn oitcnufnip ccv5 .ccv5morftupniylppus t atnerructuptuoseilppustahtniardtefsomlennahc-nehtsinipsiht otroticapacfu1muminimahtiwnipsihtsspyb.ccv5otdetcennocebdluohsdnasetats2s/1s/0s .dnuorg bsv5 .tupniylppus 5s/4s/3statnerructuptuoseilppustahtniardtefsomlennahc-nehtsinipsiht . ecivedehtroftnerrucgnitareposeilppusoslanipsiht.bsv5otdetcennocebdluohsdnasetats .dnuorgotroticapacfu1muminimahtiwnipsihtssapyb dng .dnuorg ne .tupnielbane n wodstuhsnipsihtwolgnillup.hctiwsrewopehtffo/nonrutottupnielbaneehtsisiht .ecivedeht #3s .niplortnocetatspeels .noitarugifnocgnihctiwsehtslortnocsutatsccv5ehthtiwgnolanipsiht #co .galftluaf s tressa6357pueht.hctiwsrewopehtroftuptuogalftluafniard-nepo,wol-evitcanasisiht .yaledhctilgedsm8lacipythtiwsruccotluafnehwwolnipsiht tuov .egatlovtuptuo ahtiwsnipesehtssapyb.secruostefsomlennahc-nmorftuptuoerasnipeseht .dnuorgotroticapacfu01muminim functional pin description pin configuration & typical application circuit v out UP7536 5vcc vout vout gnd 5vsb oc# s3# 5v cc 5v sb en# 1 2 3 45 6 7 8 5vcc 5vsb gnd en s3# vout vout sot23-8l oc# 5vcc s3# 5vsb gnd vout vout oc# en 1 2 3 45 6 7 8 sop-8l 1 msop-8l 2 3 4 1 2 3 4 s3# vout vout oc# 5vc c 5vs b gnd en 1 2 3 45 6 7 8 9 gnd s3# vout vout oc# 5vcc 5vsb gnd en psop-8l upi confidential
UP7536 3 UP7536-ds-f0101, jul. 2012 www.upi-semi.com functional block diagram 5vcc uvlo 5vsb uvlo switch logic en# s3# charge pump charge pump soft start 5vcc 5vsb vou t current limit thermal shutdown vou t gnd q1 q2 deglitch oc# upi confidential
UP7536 4 UP7536-ds-f0101, jul. 2012 www.upi-semi.com power switches the UP7536 is a current limited power multiplexer acting as a high side switch f or usb applications where heavy capacitive loads and short-circuits are likely to be encountered. it contains two n-channel mosfets q1 and q2 as power switches that supply output current to vout pins. the sources of q1 and q2 are connected together to the vout pins, the drain of q1 is connected to 5vcc pin and the drain of q2 is connected to 5vsb pin. the mosfets are without body diode and prevent current flows when turned off. q2 is a 400m mosfet with 200ma ca pacity and q1 is a 80m mosfet with 1.5a capacity. the power switches are driven by internal charge pumps and controlled by s3# and enable status. the UP7536 switches the output voltage to 5vsb through q2 at s3/s4/s5 states, to 5vcc through q1 at s0/s1/s2 states. charge pumps and drivers an internal charge pump supplies power to the driver circuit and provides the necessary voltage to pull the gate of the mosfet above the source. the driver controls the gate voltage of the power switch. to limit large current surges and reduce the associated electromagnetic interference (emi) produced, the driver incorporates circuitry that controls the rise times and fall times of the output voltage. chip enable the en pin receives a ttl or cmos compatible input to enable/disable the UP7536. logic low disables the power switch, charge pump, gate driver and other circuitry an d reduces the supply current down to less than 1ua. logic high restores bias to the drive and control circuits and turns the switch on. soft start the UP7536 features soft start function to eliminate the inrush current into downstream and voltage droop of upstream wh en hot-plug-in with capacitive loads. the soft start interval is 1.3ms typically. the in put current to charge up the load capacitor is proportional to its capacitance. the UP7536 current limit function may be active during the plug-in of extreme large capacitive load. over current limit the UP7536 continuous monitors the output current for over current protection to protect the system power, the power switch, and the load from damage during output short circuit or soft start interval. when an overload or short circuit is encountered, the current-sense circuitry sends a control signal to the driver. the driver in turn reduces the gate voltage and drives the power fet into its saturation region, which switches the output into a constant-current mode and holds the current constant while varying the voltage on the load. the current limit level is typical 2.3a when the power switch operates in linear region and is typical 1.5a in saturation region. the UP7536 asserts fault condition and pulls low oc# when over current, over temperature, input under voltage lockout condition is encountered. the output remains asserted until the overcurrent or overtemperature condition is removed. a 8ms deglitch circuit prevents the oc# signal from oscillation functional description figure 1. typical timing diagram 5vsb en 5vsb _drv vout s3# 5vcc 5vcc _drv t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 upi confidential
UP7536 5 UP7536-ds-f0101, jul. 2012 www.upi-semi.com or false triggering. if an over temperature shutdown occurs, the oc# is asserted instantaneously. under voltage lockout a voltage sense circuit monitors the input voltage. when the input voltage is below approximately 4.2v, a control signal turns off the power switch. over temperature protection the UP7536 continuously monitors the operating temperature of the power switch for over temperature protection. the UP7536 asserts over temperature and turns off the power switch to prevent the device from damage if the junction temperature rises to approximately 135 o c due over current or short-circuit conditions. hysteresis is built into the thermal sense, the switch will not turn back on until the device has cooled approximately 20 degrees. the open-drain false reporting output (oc#) is asserted (active low) when an overtemperature shutdown or over current occurs. if the fault condition is not removed, the switch will pulse on and off as the temperature cycles between these limits. functional description upi confidential
UP7536 6 UP7536-ds-f0101, jul. 2012 www.upi-semi.com (5v sb = 5v, t a = 25 o c, unless otherwise specified) (note 1) supply input voltage, 5vsb ----------------------------------------------------------------------------------------------- -0.3v to +5.7v other pins ------------------------------------------------------------------------------------------------------------------------------------- -0.3v to +5.7v storage temperature range ---------------------------------------------------------------------------------------------------- ------- -65 o c to +150 o c junction temperature ------------------------------------------------------------------------------------------------------------------------------------ 150 o c lead temperature (soldering, 10 sec) ----------------------------------------------------------------------------------------- ------------------- 260 o c esd rating (note 2) hbm (human body mode) --------------------------------------------------------------------------------------------------------------------- 2kv mm (machine mode) ------------------------------------------------------------------------------------------------------------ ----------------- 200v package thermal resistance (note 3) sot23-8l ja ----------------------------------------------------------------------------------------------------------------------------- 250 c/w sot23-8l jc ---------------------------------------------------------------------------------------------------------------------------- 140 c/w sop-8l ja ------------------------------------------------------------------------------------------------------------------------------ - 160 c/w sop-8l jc ------------------------------------------------------------------------------------------------------------------------------- 40 c/w psop-8l ja ------------------------------------------------------------------------------------------------------------------------------- 50 c/w psop-8l jc ------------------------------------------------------------------------------------------------------------------------------- 5 c/w msop-8l ja ----------------------------------------------------------------------------------------------------------------------------- 160 c/w msop-8l jc ------------------------------------------------------------------------------------------------------------------------------ 40 c/w power dissipation, p d @ t a = 25 c sot23-8l ------------------------------------------------------------------------------------------------------------------------------------------ 0.4w sop-8l ------------------------------------------------------------------------------------------------------------------------------------------ 0.625w psop-8l ------------------------------------------------------------------------------------------------------------------------------------------ 2.0w msop-8l ----------------------------------------------------------------------------------------------------------------------- ------------------- 0.625w (note 4) operating junction temperature ra nge ---------------------------------------------------------------------------------- -40 c to +125 c operating ambient temperature ra nge -------------------------------------------------------------------------------------- -40 c to +85 c supply input voltage, v in ------------------------------------------------------------------------------------------------------ +4.5v to +5.5v retemara pl obmy ss noitidnoctse tn i mp y tx am s tinu bsv5tupniylppus egnaregatlovtupniyppus 5. 4- -5 . 5v tuokcolegatlovredn uv olvu gnisirbsv 5- -3 . 45 . 4v siseretsyholvu - -0 8- -v m tnerrucnwodtuh si ds delbasid,tuovnodaolo n- -1 0. 01a u tnerructnecseiu qi q ,0=#3s,delbane,tuovnodaolon v0=ccv5 - -0 50 7a u ccv5tupniylppus egnaregatlovtupniylppus 5. 4- -5 . 5v tuokcolegatlovredn uv olvu gnisirccv 5- -3 . 45 . 4v siseretsyholvu - -0 8- -v m absolute maximum rating thermal information recommended operation conditions electrical characteristics upi confidential
UP7536 7 UP7536-ds-f0101, jul. 2012 www.upi-semi.com note 1. stresses beyond those listed as the above absolute maximum ratings may cause permanent damage to the device. these are for stress ratings only. functional operation of the device at these or any other conditions beyond those indicated in the r ecommended operation condition section of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. note 2. devices are esd sensitive. handling precaution recommended. note 3. ja is measured in the natural convection at t a = 25 c on a low effective thermal conductivity test board of jedec 51-3 thermal measurement standard. note 4. the device is not guaranteed to function outside its operating conditions. note 5. these items are not tested in production, specified by design. retemara pl obmy ss noitidnoctse tn i mp y tx am s tinu lortnocelbane dlohserhtlevelhgih 2. 1- -- -v dlohserhtlevelwol - -- -4 . 0v tnerructupninipelbane 1 -- -1a u yaledelban et ne_d otgnitratstuovotdlohserhtelbane pupmar -- 51. 01s m )2q(bsv5rofhctiwsrewop ecnaitsernotefsom- nr )no(sd i tuo am001 =- -0 0 40 0 5m tnerrucegakael delbasid,dngotdetcennoctuo v- -- -1a u tnerrucegkaelesreve rv tuo v0=bsv5,v5.5 =- -- -1a u )1q(ccv5rofhctiwsrewo p) 1q(ccv5rofhctiwsrewop )1q(ccv5rofhctiwsrewop )1q(ccv5rofhctiwsrewo p) 1q(ccv5rofhctiwsrewop ecnaitsernotefsom- nr )no(sd i tuo 52@a1= o c- -0 80 0 1m tnerrucegakael delbasid,v0=tuov,v5.5=ccv 5- -- -1a u tnerrucegkaelesreve rv tuo delbasid,v0=ccv5,v5.5 =- -- -1a u timiltnerruc 2qrofdlohserhttimiltnerruc a6357puro f0 0 30 5 70 051 am b6357puro f0 0 50 00 10 051 1qrofdlohserhttimiltnerruc 7. 13 . 26 . 4a egatlovwoltutpuo#c oi #co am5 =- -- -4 . 0v tnerrucetatsff ov co v5.5= #- -- -1a u hctilged#co noitressa#c o4 8 5 1s m noitressa-ed#c o0 5 10 5 20 0 5s u tratstfos emitpupmaregatlovtuptuo c,v0=#3s tuo daolon,fu01 =- -3 . 1- -s m v5=#3s cc c,v5= tuo on,fu01= daol - -3 . 1- -s m noitcetorperutarepmetrevo leveldlohserhtnwodtuhslamreh tn gisedy b- -5 3 1- - o c siseretsyhnwodtuhslamreh tn gisedy b- -0 3- - o c electrical characteristics upi confidential
UP7536 8 UP7536-ds-f0101, jul. 2012 www.upi-semi.com v out 5v/div oc# 5v/div i out 1a/div v out 5v/div oc# 5v/div i out 200ma/div v out 2v/div en 1v/div v out 2v/div en 1v/div v out 1v/div s3# 1v/div i cc 100ma/div i sb 100ma/div v out 1v/div s3# 1v/div i cc 100ma/div i sb 100ma/div typical operation characteristics trun on into 5vsb time (250us/div) c out = 1uf, s3# = 0v trun on into 5vcc time (250us/div) c out = 1uf, s3# = 5v s3# form high to low time (10us/div) c out = 1uf, i out = 100ma s3# from low to high time (500us/div) c out = 1uf, i out = 100ma ocp for 5vsb time (2ms/div) c out = 10uf, s3# = low ocp for 5vcc time (2ms/div) c out = 10uf, s3# = high upi confidential
UP7536 9 UP7536-ds-f0101, jul. 2012 www.upi-semi.com 300 500 700 900 1100 1300 1500 -50 0 50 100 150 1.7 2.2 2.7 3.2 3.7 4.2 4.7 -50 0 50 100 150 0 20 40 60 80 100 120 -50 0 50 100 150 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 -50 0 50 100 150 en/s3# falling en/s3# rising 4 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 -50 0 50 100 150 5vsb/5vcc falling 5vsb/5vcc rising por threshold level vs. temperature junction temperature ( o c) por threshold level (v) control input level vs. temperature junction temperature ( o c) control input threshold level (v) q1 on resistance vs. temperature junction temperature ( o c) q1 on resistance (m ) typical operation characteristics 5vsb q2 current limit vs. temperature junction temperature ( o c) current limit threshold for q2 (ma) 5vcc q1 current limit vs. temperature junction temperature ( o c) current limit threshold for q1 (a) 0 100 200 300 400 500 600 700 -50 0 50 100 150 q2 on resistance vs. temperature junction temperature ( o c) q2 on resistance (m ) upi confidential
UP7536 10 UP7536-ds-f0101, jul. 2012 www.upi-semi.com 0 10 20 30 40 50 60 70 -50 0 50 100 150 quiescent current vs. temperature junction temperature ( o c) quiescent current (ua) typical operation characteristics upi confidential
UP7536 11 UP7536-ds-f0101, jul. 2012 www.upi-semi.com application information the UP7536 is a current limited power multiplexer acting as a high side switch for usb applications where heavy capacitive loads and short-circuits are likely to be countered. it switches output voltage to 5vsb at s3/s4/s5 states with 450m switch and 200ma capability; to 5vcc at s0/ s1/s2 states with 90m switch and 1.5a capability. this device features an active-high enable control input. soft start function limits the inrush current from supply input when enabled. disabling the device reduces its standby current down to less than 1ua. optimal switch logic according to s3# and 5vcc status ensures seamless output voltage transition. when the output load exceeds the current-limit threshold or a short is present, the UP7536 asserts overcurrent protection and limits the output current to a safe level by driving the power switches into saturation mode. other features include soft-start to limit inrush current during plug-in, thermal shutdown to prevent catastrophic switch failure from high-current loads, under-voltage lockout (uvlo) to ensure that the device remains off unless there is a valid input voltage present. the UP7536 is available in sot23-8, (p)sop-8, and msop-8 package. input and output capacitors bypass the supply input pins with a single 4.7uf capacitor as close as possible to the UP7536. a 4.7uf output capacitor at the output pin is recommended even much larger output capacitors are already available at the output of the UP7536, especially if the output capacitors are more than 2 inches away on the pcb. the inrush current to charge the output capacitors is calculated as: ss out out in t v c i = (a) special care should be paid to large output capacitor applications. take c out = 1000uf as example, the inrush current is i in = 1000uf x 5v / 1.3ms = 3.8a. this is higher than the current limit threshold of q1 and q2. in this case, the output voltage ramp up time is controlled by the current limit function of q1 and q2. fault indication function may be false triggered and pull low the oc# as shown in figure 1. the oc# is pulled low after 8ms delay and released when v out > 2v. v out (5v/div) oc# (5v/div) en (5v/div) i sb (400ma/div) time: 5ms/div figure 1. turn on into 5vsb with 2000uf output capacitor. hot plug application the output voltage undergoes an abrupt drop when a device with large input capa citors is hot plugged into the output of UP7536 as shown in figure 2, where a device with 1500uf is hot plugged into UP7536 output with 470uf output capacitor. the output voltage ramp up time is controlled by the current limit level. the oc# is not pulled low since the output voltage is kept higher than 2.0v before the delay time. v out (2v/div) oc# (2v/div) i sb (200ma/div) time: 5ms/div figure 2. hot plug application with s3# = 0v. thermal consideration temperature effect should be well considered when dealing with voltage drop and power dissipation. the maximum r ds(on) of the power switch is 90m of q1 under 25 o c junction temperature. if the device is expected to operate upi confidential
UP7536 12 UP7536-ds-f0101, jul. 2012 www.upi-semi.com at 125 o c junction temperature, the r ds(on) of q1 will become 90m * (1 + (125 o c - 25 o c) * 0.5%/ o c) = 135m where 0.5%/ o c is the approximated temperature coefficient of the r ds(on). if the maximum load current is expected to be 1.2a, the maximum voltage will become 1.2a * 100m = 120mv this in turn will cause power dissipation as 1.2a * 120mv = 144mw the temperature raise is calculated as 144mw * 250 o c/w = 36 o c the junction temperature is calculated as t a + 36 o c, where t a is the expected maximum ambient temperature. a few iterations are required until get final solutions. pcb layout consideration ?? ?? ? place the UP7536 as close to the usb conne ctor as possible to minimize the parasitic elements. ?? ?? ? keep the power trace short and wide to minimize the parasitic resistance along the trace. ?? ?? ? place the bypassing capacitor as close to the device as possible. application information upi confidential
UP7536 13 UP7536-ds-f0101, jul. 2012 www.upi-semi.com note 1.package outline unit description: bsc: basic. represents theoretical exact dimension or dimension target min: minimum dimension specified. max: maximum dimension specified. ref: reference. represents dimension for reference use only. this value is not a device specification. typ. typical. provided as a general value. this value is not a device specification. 2.dimensions in millimeters. 3.drawing not to scale. 4.these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.15mm. package information sot23-8l 0.22 - 0.38 2.80 - 3.00 2.60 - 3.00 1.95 bsc 0.00 - 0.15 3.60 10 0. 1.00 10 0. 0.65 bsc 1.50 - 1.70 2.60 10 0 . 1.60 10 0 . recommended solder pad layout 1.45 max 0.08 - 0.22 0.30 - 0.60 0.45 0.05 0.65 0.05 upi confidential
UP7536 14 UP7536-ds-f0101, jul. 2012 www.upi-semi.com package information note 1.package outline unit description: bsc: basic. represents theoretical exact dimension or dimension target min: minimum dimension specified. max: maximum dimension specified. ref: reference. represents dimension for reference use only. this value is not a device specification. typ. typical. provided as a general value. this value is not a device specification. 2.dimensions in millimeters. 3.drawing not to scale. 4.these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.15mm. sop- 8l 0.31 - 0.51 4.80 - 5.00 5.80 - 6.20 0.10 - 0.25 0.10 - 0.25 0.40 - 1.27 1.27 bsc 3.80 - 4.00 recommended solder pad layout 1.75 max 7.00 10 0. 1.50 10 0. 0.70 10 0. 1.27 10 0. 5.50 10 0. 4.00 10 0. upi confidential
UP7536 15 UP7536-ds-f0101, jul. 2012 www.upi-semi.com note 1.package outline unit description: bsc: basic. represents theoretical exact dimension or dimension target min: minimum dimension specified. max: maximum dimension specified. ref: reference. represents dimension for reference use only. this value is not a device specification. typ. typical. provided as a general value. this value is not a device specification. 2.dimensions in millimeters. 3.drawing not to scale. 4.these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.15mm. psop- 8l package information 0.31 - 0.51 4.80 - 5.00 5.79 - 6.20 0.10 - 0.25 0.40 - 1.27 1.27 bsc 3.80 - 4.00 1.90 - 2.55 2.60 - 3.40 0.00 - 0.15 1.70 max recommended solder pad layout 7.00 10 0. 1.50 10 0. 0.70 10 0. 1.27 10 0. 5.50 10 0. 4.00 10 0. 2.30 10 0. 3.20 10 0. upi confidential
UP7536 16 UP7536-ds-f0101, jul. 2012 www.upi-semi.com msop- 8l package information note 1.package outline unit description: bsc: basic. represents theoretical exact dimension or dimension target min: minimum dimension specified. max: maximum dimension specified. ref: reference. represents dimension for reference use only. this value is not a device specification. typ. typical. provided as a general value. this value is not a device specification. 2.dimensions in millimeters. 3.drawing not to scale. 4.these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.15mm. 0.22-0.38 0.00 - 0.15 0.08-0.23 0.40 - 0.80 4.50 ref 0.35 ref 0.65 ref 0.65 bsc 3.50 ref recommended solder pad layout 1.10 max 0.75 - 0.95 1.00 ref 2.90 - 3.10 2.90 - 3.10 4.80 - 5.00 upi confidential
UP7536 17 UP7536-ds-f0101, jul. 2012 www.upi-semi.com important notice upi and its subsidiaries reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. upi products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment. however, no res ponsibility is assumed by upi or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of upi or its subsidiaries. copyright ( c ) 2009, upi semiconductor corp. upi semiconductor corp. headquarter 9f.,no.5, taiyuan 1st st. zhubei city, hsinchu taiwan, r.o.c. tel : 886.3.560.1666 fax : 886.3.560.1888 upi semiconductor corp. sales branch office 12f-5, no. 408, ruiguang rd. neihu district, taipei taiwan, r.o.c. tel : 886.2.8751.2062 fax : 886.2.8751.5064 upi confidential

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