View UP8001AQAD-41_9079255.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

upi confidential up8001a/b 1 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 ?? ?? ? complete charger for 1-cell li-ion batteries ?? ?? ? integrated pass element and current sensor ?? ?? ? no external blocking diode required ?? ?? ? 1% voltage accuracy ?? ?? ? programmable charge current up to 2a ?? ?? ? programmable end-of charge current ?? ?? ? ntc interface for battery temperature sensing ?? ?? ? battery insertion detection ?? ?? ? 1ua battery drain current when input voltage is removed ?? ?? ? automatic trickle charging of low voltage cells ?? ?? ? automatic battery recharge ?? ?? ? rohs compliant and 100% lead (pb)-free rebmunredr oe pytegakca pk ramer xx-aada1008p ul 01-3x3nfdv egnarctnworran xx-daqa1008p ul 61-4x4nfqv xx-aadb1008p ul 01-3x3nfdv egnarctnediw v2.4:24,v1.4:14egatlovyrettab,xx li-ion/li polymer battery charger in vdfn and vqfn packages ?? ?? ? cellular phones ?? ?? ? handheld computers and pdas ?? ?? ? charging docks and cradles ?? ?? ? usb powered chargers ?? ?? ? other portable applications note: upi products are compatible with the current ipc/ jedec j-std-020 and rohs requirements. they are 100% matte tin (sn) plating and suitable for use in snpb or pb-free soldering processes. general description a pplications ordering information features pin configuration & typical application circuit bat 2v8 temp iref imin vin stat# fault# en toen time up8001 battery pack r t r u gnd the up8001 is a highly integrated single-cell li-ion or li-polymer battery charger specifically designed to work with ac adaptor or usb port. the up8001 charges battery with a minimum current when the battery voltage is lower than 2.8v. the charger works at constant current mode when the battery voltage is between 2.8v and 4.2v, the charge current is programmable up to 2a by an external resistor. the charge works at constant voltage mode when the battery voltage is 4.2v. when the input voltage is removed, the up8001 automatically enters a low quiescent current sleep mode, dropping the battery drain current to 1ua. other features include thermal foldback charge current, ntc thermistor interface and automatic recharge. the up8001 is available in thermal-enhanced and space-saving vqfn and vdfn packages. 10 bat temp iref en 2v8 vin fault# stat# time gnd agnd 9 8 7 6 1 2 3 4 5 bat temp iref imin vin fault# stat# time agnd 12 11 10 9 1 2 3 4 gnd toen en 2v8 5 6 7 8 vinvin bat bat 16 15 14 13 vdfn3x3 10-l vqfn4x4 C 16l
upi confidential up8001a/b 2 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 i. onnip nip eman noitcnufnip nf qn fd ,51,1 61 1 niv .tupniylppus nipsihtmorfcimarecfu2.2 muminim a.rotpadallawaotnipsihttcennoc .regrahcehtfonoitarepoelbatsrofderiuqersidng ot 22 #tluaf .noitacidnitluaf dellupsinipsiht.sutatstluafgnitacidnituptuoniard-ne ponasinipsiht .snoitodnoctluafynarednu w olot 33 #tats .noitacidnisutatsregrahc .sutatsgnigrahcgnitacidnituptuoniard-neponasinipsih t .yrettabagnigrahcsiregrahcehtnehw w olotdellupsinipsiht 44 emit .doirepnoitallicso enimretedotsnipdngdnaemitneewtebroticapacgnimitatce nnoc .regrahcehtrofecnereferemitasedivorpdoirepnoitallic sosiht.doirepnoitallicsoeht 55 dng .dnuorg otevitcepserhtiw derusaem siegatlovlla.dnuorg metsysotnipsihttcennoc .nipsiht 6a n neot .tupnielbanetuo emit roftimilemit-egrahctuoemitehtselbasiddng otnipsihtgnillup .timiltuoemitehtelbaneothgihnipsihtlluprotaolfnipsi httel.sedom egrahctsaf 76 ne .tupnielbnae sihtlluprotaolfnipsihttel.regrahcehtselbasid dng otnipsihtgnillup .regrahcehtelbaneothgihnip 87 8v2 .tuptuo ecnerefer v8.2 egatlovtupniehtnehw ecruosegatlovv8.2astuptuonipsiht .tnerructuptuoam2gnicruosfoelbapacsinipsiht.leveldl ohserhtropevobasi 98 feri .gnim margorptnerrucgnigrahctnatsnoc dngdnaferineewtebrotsiseratcennoc itnerrucecnerefermargorpotsnip fer .edom gnigrahctnerructnatsnocrof 0 1a n nimi .gnim margorptnerruc gnigrahc muminim dng dnanimineewtebrotsiseratcennoc sitnerruc muminim .noisicedegrahc-fo-dnerofleveltnerruc muminim margorpotsnip ifo01/1ottesyllanretni fer .nip8v2otdetcennocrognitaolfsinipsihtnehw 1 19 pmet .tupninoitcetedlavomeryrettab dnaerutarepmet lamrehtctnotnipsihttcennoc .kcapyrettabfotuptuo ,31,21 ,41 01 tab .tuptuoyrettab fu2.2muminim a.kcapyrettabfolanimretevitisopehtotnipsihttcennoc .regrahcehtfonoitarepoelbatsrofderiuqersiroticapac functional pin descriptio n
upi confidential up8001a/b 3 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 functional block diagram reference temperature monitoring oscillator counter bat v ch v min v rechg 2v8 stat# fault# gnd en time toen temp imin iref vin q mian q sen 100000: 1 current mirror v por v bat v in 100mv v por v ch v min v rechg rechage minbat fault status i t i ref 2v8 i sen i min min_i 40k 60k 67k 33k over temp under temp batt removal input ok charge up8001adaa-xx, up8001aqad
upi confidential up8001a/b 4 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 functional block diagram reference temperature monitoring oscillator counter bat v ch v min v rechg 2v8 stat# fault# gnd en time toen temp imin iref vin q mian q sen 100000: 1 current mirror v por v bat v in 100mv v por v ch v min v rechg rechage minbat fault status i t i ref 2v8 i sen i min min_i 40k 60k 75k 25k over temp under temp batt removal input ok charge up8001bdaa-xx
upi confidential up8001a/b 5 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 functional description the up8001 is a highly integrated single-cell li-ion or li-polymer batter charger specifically designed to work with ac adaptor or usb port. the up8001 charges battery with a minimum current when the battery voltage is lower than 2.8v. the charger works at constant current mode when the battery voltage is between 2.8v and 4.2v, the charge current is programmable up to 2a by an external resistor. the charger works at constant voltage mode when the battery voltage is 4.2v. when the input voltage is removed, the up8001 automatically enters a low quiescent current sleep mode, dropping the battery drain current to 1ua. other features include thermal foldback charge current, ntc thermistor interface and automatic recharge. the up8001 is available in thermal-enhanced and space-saving vqfn and vdfn packages. power on reset (por) the input voltage is continuously monitored for power on reset (por). the up8001 resets itself as the input voltage rises above the por rising threshold, typically 3.4v. the device shuts down if the input voltage is under its por falling threshold, typically 2.4v, and draws less than 1ua quiescent current from the battery. chip enable and 2.8v bias voltage the en pin is internally pulled high to vin pin for chip disable/ enable. pulling this pin to ground shuts down the up8001 and disables the 2.8v bias voltage. when shut down, the charge draws typically less than 30ua current from the input power and less than 1ua form the battery. when this pin is released from ground, the up8001 is activated according to settings and battery status. logic high of en pin also enables the 2.8v bias voltage for biasing the internal control and logic circuit. this voltage also provides current for external circuits such as ntc thermistor circuit. the maximum allowed external load for 2v8 is 2ma. charge cycle a charge cycle can be initiated by anyone of the following events: - power on reset, - the en pin is toggled from low to high, - a new battery is inserted (detected by temp pin), - the battery voltage drops below a recharge threshold after completing a charge cycle, - recovery from an battery over-temperature or under- temperature fault, a charge cycle consists of three charge modes: trickle mode (tkm), constant current mode (ccm), and constant voltage mode (cvm) as shown in figure 1. trickle mode a charge cycle always starts with the trickle mode where minimum charging current is used. t1 and t6 indicate the starting of charge cycle that are initiated by vin por and recharge threshold respectively. the up8001 leaves tkm and enters ccm at t2 and t7 if the battery voltage stays above v min (2.8v typical) for 15 consequently cycles of the internal oscillator. the up8001 enters tkm and the 15-cycle counter is reset whenever the battery voltage drops below figure 1. typical charge cycles of up8001. v in 2v8 stat# en v bat i chg t0 t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 por rising threshold 15 cycle ~ 1/8 t out i min v min 15 cycles charge cycle charge cycle v rechg
upi confidential up8001a/b 6 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 of-charge and set stat# pin high impedance if the charge current is lower than i min . the charger actually does not terminate charging until the end of the timeout, as described in the total charge time section. the voltage at imin pin v imin is regulated to 0.8v reference voltage when it is left open. the eoc current i min is 10,000 times of the current through r imin and is governed by the following equation: 4 imin imin imin min 10 r v8.0 000 ,10 r v i = = (a) another way to set i min is connecting imin pin to 2v8 pin. this sets i min to 1/10 of i ref . for the up8001 in vdfn3x3 package, the imin pin is connected internally to 2v8 pin. however, if iref is shorted to ground, i min is automatically set to 5ma and cannot be changed externally. total charge time an external timing capacitor c time connecting between time pin and ground programs a timing reference. the up8001 charges/discharges the c time between 1.5v and 0.5v, both with 10ua current source. the oscillation period is describedby the following equation: time 5 osc c 10 2 t = (second) a 22-stage binary counter counts the timing oscillation and limits the total charge time t chg for the ccm and cvm. the t chg can be calculated as: time 11 osc 22 out c 10 39.8 t 2 t = = (second) a 15nf c time results in a 3.0ms oscillation period and 3.5 hours charge time. the charger must reach the end-of- charge status within t out . otherwise, a timeout fault is triggered and latches up the charge. once latched by timeout fault, the charge can only be reset by v in por or toggling the en pin. the tkm also has a time limit of 1/8 t out . a timeout fault is triggered and latches up the charger if the battery voltage does not reach v min within this limit. therefore, the charge stays in trickle mode for at least 15xt osc and, at most 1/8 of t out as shown if figure 1. disabling timeout limitpulling the toen pin low disables the timeout limit. the charge behaviors like a current-limited ldo regulator with its output voltage set to v ch . the stat# pin is set high impedance if charge current drops below i min , and pulled low if charge current is higher than i min . there is no recharge cycle at this mode.the time limit for trickle mode is not disabled even the toen v min . constant current modethe up8001 operates at ccm when the battery voltage is between 2.8v and v ch (charge high voltage, 4.1v for up8001-41, 4.2v for up8001-42). the charger acts like a constant current regulator. the charge current i ref is programmed up to 2a (1.5a for dfn3x3 package) by the iref pin, see the charge current programming section for detail. constant voltage mode the up8001 operates at cvm when the battery voltage reaches the charge high voltage v ch . the charger acts like a constant voltage regulator that regulates the battery terminal voltage at v ch . the charge current is determined by the battery impedance and core voltage. the up8001 asserts end-of-charge and sets stat# high impedance at t4 and t8 when the charge current is less than i min (see end-of-charge current section for detail). the charging cycle is actually not terminated until charge timeout is completed to bring the battery to its full capacity. recharge after a charge cycle completes, charging is prohibited until the battery voltage drops to a recharge threshold, v rechg . then a new charge cycle starts at point t6 and ends at point t9, as shown in figure 1. the timeout counter is reset at t6. charge current setting an external resistor r iref connecting between iref and ground programs the charge current. the voltage at iref pin v iref is regulated to 0.8v reference voltage when it is left open. the charging current i ref at ccm is 100,000 times of the current through r iref as the following equation: 5 iref iref iref ref 10 r v8.0 000 , 100 r v i = = (a) the charge current is set to 100ma when iref pin is pulled lower than 0.4v. the iref pin is capable of sourcing 100ua. the external circuit must be able to sink at least 100ua to pull low this pin under 0.4v. the charge current is set to 500ma when iref pin is pulled higher than 1.3v. no special concern is required for sourcing capability of the external circuit to pull high this pin above 1.3v. end-of-charge (eoc) current a resistor r imin connecting between imin pin and ground set the end-of-charge current i min . the up8001 asserts end- functional description
upi confidential up8001a/b 7 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 the charge current decreases at a rate of -100ma/ o c since it is 100,000 times mirrored of i sen . the charge current is reduced to zero when the junction temperature rises to+130 o c for a charger with i ref set to 1.0a. the actual charge current settles between +120 o c and +130 o c. the up8001 asserts end-of-charge only when the charge current is below i min at constant voltage mode. if the charge current drops below i min due to thermal foldback at constant current mode, the up8001 will not assert end-of-charge. ntc thermistor (up8001a) use an ntc thermistor to form a voltage divider at temp pin for monitoring the battery pack as shown in figure 3. cp2 and cp3 are schmitt triggers for upper and lower boundary, v tmax and v tmin , of temperature widow comparator respectively. the up8001a stops charging and set fault# pin low if the voltage at temp pin is out of the window. the up8001a sets fault# pin high impedance and starts another charge cycle when the voltage temp is within the window again. the temperature accuracy does not depend on the accuracy of 2.8v bias voltage since both reference voltages v tmin and v tmax and voltage at temp is are percentages of the bias voltage. however, up8001a provides a 2.8v with 2% high accuracy in case that the temp pin voltage is also monitored by other asic on the pcb for redundant thermal protection. the lower temperature boundary is v tmin = 1.4v that is 1/2 of the 2.8v bias voltage. this needs r u = (r l + r tmin ) at low temperature limit, where r u is the pull-high resistor, r l is the pull-low resistor, and r tmin is the thermistor resistance at low temperature limit. on the other hand, the voltage at temp pin at high temperature limit should be: v 467 .0 r r r r r v8.2 tmax l u tmax l = + + + =1/6 of the 2.8v bias voltage. 5/) r r( ) r r( tmin l tmax l + = + where r tmax is the thermistor resistance at high temperature limit. the ntc thermistor must have a resistance ratio of 5:1 at least at the low and the high temperature limits. pin is pulled low. let the toen pin floating to enable the timeout function. the toen pin is left floating for the up8001 in vdfn3x3 package. charge current thermal foldback thermal issue always deserved great attentions for a linear charger. the maximum power dissipation usually occurs at the beginning of constant current mode where the up8001 charge the battery with maximum current and high dropout voltage. the up8001 integrated thermal shutdown function avoiding the charger from burning out. the thermal shutdown is triggered and latches up the charger when the junction temperature reaches 150 o c typically. the up8001 also integrates a thermal foldback function to ensure safe operation without triggering thermal shutdown when pcb space is limited for thermal dissipation as shown in figure 2. the up8001 automatically reduces the charge current when the junction temperature rises above +120 o c to prevent further temperature rise. i ref i t i sen junction temperature 120 o c current temperature monitoring v rechg i ref i t i sen bat vin figure 2. charge current thermal flodback. i rer is the current reference set by r iref connecting between iref pin and ground. i t is the current signal from temperature monitoring block. i t is kept zero and does not affects the charge current if the junction temperature is below+120 o c. i t rises at a rate of 1ua/ o c and is added to the sensed current i sen when the junction temperature is over +120 o c. this makes i sen decreases at a rate of -1ua/ o c. functional description
upi confidential up8001a/b 8 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 over temp. under temp. battery removal 2v8 r u ntc 33k 40k60k 67k 80% of 2v8 50% of 2v8 16.7% of 2v8 up8001a 50% 43.99% 16.67% 18.20% under temperature over temperature time temp pin voltage cp2 cp1 cp3 r l figure 3. battery temperature monitoring for up8001a. ntc thermistor (up8001b) use an ntc thermistor to form a voltage divider at temp pin for monitoring the battery pack as shown in figure 4. cp2 and cp3 are schmitt triggers for upper and lower boundary, v tmax and v tmin , of temperature widow comparator respectively. the up8001b stops charging and set fault# pin low if the voltage at temp pin is out of the window. the up8001b sets fault# pin high impedance and starts another charge cycle when the voltage temp is within the window again. the temperature accuracy does not depend on the accuracy of 2.8v bias voltage since both reference voltages v tmin and v tmax and the voltage at temp are percentages of the bias voltage. however, up8001 provides a 2.8v with 2% high accuracy in case that the temp pin voltage is also monitored by other asic on the pcb for redundant thermal protection. the lower temperature boundary is v tmin = 1.4v that is 1/2 of the 2.8v bias voltage. this needs r u = (r l + r tmin ) at low temperature limit, where r u is the pull-high resistor, r l is the pull-low resistor, and r tmin is the thermistor resistance at low temperature limit. on the other hand, the voltage at temp pin at high temperature limit should be: v 35.0 r r r r r v8.2 tmax l u tmax l = + + + =1/8 of the 2.8v bias voltage. 7/) r r( ) r r( tmin l tmax l + = + where r tmax is the thermistor resistance at high temperature limit. the ntc thermistor must have a resistance ratio of 7:1 at least at the low and the high temperature limits. over temp. under temp. battery removal 2v8 r u ntc 25k 40k60k 75k 80% of 2v8 50% of 2v8 16.7% of 2v8 up8001b 50% 43.99% 12.50% 13.65% under temperature over temperature time temp pin voltage cp2 cp1 cp3 r l figure 4. battery temperature monitoring for up8001b. functional description
upi confidential up8001a/b 9 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 functional description battery removal detection the up8001 assumes that the ntc thermistor is co-packed with the battery and is removed together with the battery. the temp pin is pulled high to 2v8 if the ntc is removed. the up8001 asserts the removal of battery, stops the charging cycle and sets fault# pin low if temp voltage is higher than 2.1v. a new charge cycle starts if a battery is inserted again. for applications that do not support battery thermal detection, set temp voltage as 1/3 of 2v8 bias voltage by an external resistive voltage divider. indications the up8001 has three indications: the input presence, the charge status, and the fault indication. the input presence is indicated by the 2v8 pin while the other two indications are presented by the stat# pin and fault# pin respectively. the 2v8 pin voltage is enabled and regualted typical 2.8v if input voltage por is granted and the chip is enabled. this pin is capable of sourcing 2ma output current and can be used as the power present indication. figure 4 shows the 2v8 pin voltage vs. the input voltage. the stat# pin is an open-drain logic output that is pulled low when the charger is in charge states (from the beginning of a charge cycle to the end-of-charge condition is qualified.) the eoc condition is: the battery voltage is within vch and vrechg and the charge current falls belows a user programmable eoc current threshold. the stat# pin is set to high impedance and latched once the eoc condition is granted. the latch is released at the beginning of another charge or recharge cycle. the fault# pin is an open-drain logic output that is pulled when any fault conditions occur. the fault conditions include the external battery temperature fault, the battery removal , or a timeout fault. the stat# pin is set to high impedance when the fault conditions are removed.
upi confidential up8001a/b 10 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 retemara pl obmy ss noitidnoctse tn i mp y tx a ms tinu tupniylppus egnartupniylppu sv ni 5. 4- -5 . 5v v ni dlohserhtgnisir rop - -4 . 30 . 4v v ni dlohserhtgnillafrop - -4 . 2- -v tnerrucybdnats tnerrucknisnipta bi bs wol=nerognitaolfni v- -- -0 . 2a u tnerrucylppusnip ni vi niv wol=nednagnitaolfta b- -0 2- -a u tnerrucylppusnip ni vi niv gnitaolfnednagnitaolfta b- -7 . 0- -a m noitalugeregatlov egatlovtuptu ov hc 14-1008p u9 50. 40 1. 41 41. 4v egatlovtuptu ov hc 24-1008p u8 51. 40 2. 42 42. 4v egatlovtuopor dv tab egakcap4x4,a5.0,v0.4 =- -0 2 1- -v m egatlovtuopor dv tab egakcap3x3,a5.0,v0.4 =- -0 2 1- -v m supply input voltage, v in (note 1) ----------------------------------------------------------------------------------------------- -0.3v to +6v output pin voltage, bat -------------------------------------------------------------------------------------------------------------- -0.3v to +5.5v signal input v oltage ------------------------------------------------------------------------------------------------------------------------ -0.3v to +3.2v signal output v oltage ---------------------------------------------------------------------------------------------------------------------- -0.3v to +6v charge current for qfn 4x4 package ------------------------------------------------------------------------------------------------------------- 2.1a charge current for dfn 3x3 package ------------------------------------------------------------------------------------------------------------- 1.6a storage temperature ----------------------------------------------------------------------------------------------------------------------- -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) ----------------------------------------------------------------------------------------------------------------------------- 2 00v operating junction temperature range (note 4) ------------------------------------------------------------------------ -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 (v in = 5v, t a = 25 o c, unless otherwise specified) a bsolute maximum ratin g thermal informatio n recommended operation conditions electrical characteristics package thermal resistance (note 3) vdfn3x3 - 10l ja ----------------------------------------------------------------------------------------------------------------------- 50 c/w vqfn4x4 - 16l ja ----------------------------------------------------------------------------------------------------------------------- 37 c/w vdfn3x3 - 10l jc -------------------------------------------------------------------------------------------------------------------------- 5 c/w vqfn4x4 - 16l jc ------------------------------------------------------------------------------------------------------------------------- 3 c/w power dissipation, p d @ t a = 70 o c vdfn3x3 ---------------------------------------------------------------------------------------------------------------------------------------------- 2.0w vqfn4x4 --------------------------------------------------------------------------------------------------------------------------------------------- 2.7w
upi confidential up8001a/b 11 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 note 1. stresses listed as the above absolute maximum ratings may cause permanent damage to the device. these are for stress ratings. functional operation of the device at these or any other conditions beyond those indicated in the operational sections 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. electrical characteristics retemara pl obmy ss noitidnoctse tn i mp y tx a ms tinu tnerrucegrahc tnerrucegrahctnatsno ci ghc r feri k87= , v tab v7.3 =0 0 90 00 10 01 1a m tnerrucegrahctnatsno ci ghc v feri v,v2.1> tab v7.3 =0 3 40 9 40 5 5a m tnerrucegrahctnatsno ci ghc v feri v,v4.0< tab v7.3 =- -5 9- -a m tnerrucegrahcelkcir ti krt r feri k87= , v tab v0.2 =- -5 9- -a m tnerrucegrahcelkcir ti krt v feri v,v2.1> tab v0.2 =- -5 4- -a m tnerrucegrahcelkcir ti krt v feri v,v4.0< tab v0.2 =- -9- -a m dlohserhtegrahc-fo-dn ei ret r nimi k87= 5 80 0 15 1 1a m egatlovdlohserht dlohserhtegatlovegrahce rv ghcr 24-1008p u- -0 . 4-v dlohserhtegatlovegrahce rv ghcr 14-1008p u- -9 . 3- -v egatlovdlohserhtegrahcelkcir tv nim 47. 28 . 26 8. 2v 8v2 egatlovtuptuo 8v 2v 8v2 47. 20 8. 26 8. 2v tnerrucgnicuos8v 2i 8v2 2- -- -a m rotallicso doirepnoitallics ot cso c emit fn51 =7 . 20 . 33 . 3s m gnirotinom erutarepmet dlohserhterutarepmetwo lv nimt v 8v2 v8.2 =5 3. 10 4. 15 4. 1v dlohserhterutarepmethgi hv xamt v 8v2 a1008pu,v8.2 =9 4 47 6 45 8 4v m v 8v2 b1008pu,v8.2 =2 3 30 5 38 6 3v m dlohserhtlavomeryretta bv vmr v 8v2 v8.2 =- -4 2. 2- -v kcabdloftnerrucegrahc dlohserht t dlof 50 10 2 15 31 o c niagkcabdloftnerru cg dlof -0 0 1- -/ am o c tuptuo dnatupnicigol hgihtupnineot 0. 2- -- -v woltupninednaneot - -- -8 .0 v hgihtupninimidnaferi 2. 1- -- -v woltupninimidnaferi - -- -4 . 0v tnerrucknis#tluafdna#tat sv 4.0=egatlovni p5 - -- -a m
upi confidential up8001a/b 12 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 0 5 10 15 20 25 30 22 . 533 . 544 . 555 . 5 0.796 0.797 0.798 0.799 0.8 0.801 0.802 22 . 533 . 544 . 555 . 5 0 0.1 0.2 0.3 0.4 0.5 2 2.5 3 3.5 4 4.5 5 5.5 2.5 2.6 2.7 2.8 2.9 2 2.5 3 3.5 4 4.5 5 5.5 typical operation characteristics 2v8 voltage vs. input voltage input voltage v in (v) 2v8 output voltage (v) iref voltage vs. input voltage input voltage v in (v) r iref = 82k iref pin voltage (v) leakage current vs battery voltage battery voltage v bat (v) input voltage = floating battery leakage current (ua) shutdown current vs. input voltage input voltage v in (v) en = gnd input current (ua) 2v8 voltage load regulation 2v8 output current (ma) 2v8 output voltage (v) 2.6 2.65 2.7 2.75 2.8 2.85 2.9 0 2 4 6 8 10 12 0 50 100 150 200 250 300 350 400 0123456 fault# and stat# sinking capability pin sinking current (ma) pin voltage (mv)
upi confidential up8001a/b 13 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 time (0.2v/div) en (2v/div) stat# (5v/div) v bat (0.5v/div) i chg (0.5a/div) v in (5v/div) stat# (5v/div) v bat (0.5v/div) i chg (0.5a/div) typical operation characteristics typical charge cycle i typical charge cycle ii time pin waveform time (250us) c time = 10nf power on by v in turn on by en
upi confidential up8001a/b 14 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 a pplication information the up8001 is a highly integrated single-cell li-ion or li-polymer batter charger specifically designed to work with ac adaptor or usb port. the up8001 charges battery with a minimum current when the battery voltage is lower than 2.8v. the charger works at constant current mode when the battery voltage is between 2.8v and 4.2v, the charge current is programmable up to 2a by an external resistor. the charge works at constant voltage mode when the battery voltage is 4.2v. when the input voltage is removed, the up8001 automatically enters a low quiescent current sleep mode, dropping the battery drain current to 1ua. other features include thermal foldback charge current, ntc thermistor interface and automatic recharge. the up8001 is available in thermal-enhanced and space-saving vqfn and vdfn packages. input and output capacitors selection the charger acts like a constant current and constant linear regulator at ccm and cvm respectively. input and output capacitors are necessary for stable operation of the charger. place a minimum 2.2uf input capacitor and a minimum 2.2uf output capacitor phycially near the charger. pcb layour consideration the pcb acts as main heat dissipation path for up8001. propoer pcb design maximizes heat dissipation capability and the charge current capability. the exposed pad should be properly soldered to the pcb and connected to inner ground plane through as many thermal vias as possible. place 9 thermal vias on the thermal pad of vqfn4x4 package and place 8 thermal vias on the thermal pad of vdfn3x3 package. also connect as much top-layer cooper as possible to the exposed pad of vdfn package to minimize the thermal resistance. bat temp iref imin vin fault# stat# time gnd toen en 2v8 vinvin bat bat agnd 12 11 10 9 1 2 3 4 5 6 7 8 16 15 14 13 10 bat temp iref en 2v8 vin fault# stat# time gnd agnd 9 8 7 6 1 2 3 4 5 vias for gnd vias for gnd vias for 2v8 vdfn4x4 C 16l vdfn3x3 C 10l figure 1. top layer layout examples
upi confidential up8001a/b 15 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 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 no not include mold flash or protrusions. mold flash or protrusions shell not exceed 0.15mm. package informatio n vdfn3x3 - 10l 1 5 61 0 recommended solder pitch and dimensions 1.00 max 0.18 - 0.30 0.50 bsc 2.90 - 3.10 2.90 - 3.10 1.55 - 1.65 0.30 - 0.50 2.25 - 2.60 0.00 - 0.05 0.20 ref 2.35 - 2.45 1.55 - 1.65 1.95 - 2.05 3.55 - 3.65 0.18 - 0.30 0.50 bsc
upi confidential up8001a/b 16 upi semiconductor corp., http://www.upi-semi.com rev. f00, file name: up8001a/b-ds-f0002 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 no not include mold flash or protrusions. mold flash or protrusions shell not exceed 0.15mm. package informatio n vqfn4x4 - 16l 3.90 - 4.10 pin 1 mark bottom view - exposed pad 2.60 - 2.70 0.25 - 0.35 2.60 - 2.70 0.35 - 0.45 4.55 - 4.65 3.90 - 4.10 0.00 - 0.05 1.00 max 0.20 bsc recommended solder pad pitch and dimensions 0.25 - 0.35

▲Up To Search▲

Price & Availability of UP8001AQAD-41

	To Download UP8001AQAD-41 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .