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? 2007 microchip technology inc. ds22036a-page 1 mcp73811/2 features ? complete linear charge management controller - integrated pass transistor - integrated current sense - integrated reverse discharge protection ? constant current / constant voltage operation with thermal regulation ? high accuracy preset voltage regulation: + 1% ? voltage regulation: 4.20v ? selectable charge current: - mcp73811: 85 ma / 450 ma ? programmable charge current: - MCP73812: 50 ma - 500 ma ? minimum external components required: - mcp73811: 2 ceramic capacitors - MCP73812: 2 ceramic capacitors and 1 resistor ? no preconditioning ? no end-of-charge control ? no undervoltage lockout (uvlo) ? automatic power-down when input power removed ? active high charge enable ? temperature range: - -40c to +85c ? packaging: - 5-lead sot-23 applications ? low-cost lithium-ion/lithium-polymer battery chargers ? rechargeable toys ? electronic cigarettes ? bluetooth headsets ? usb chargers description the mcp73811/2 devices are linear charge manage- ment controllers that are designed for use in space limited and cost sensitive applications. the mcp73811/2 provide specific charge algorithms for single cell li-ion or li-polymer battery to achieve optimal capacity in the shortest charging time possible. along with its small physical size, the low number of external components required make the mcp73811/2 ideally suited for portable applications. for applications charging from a usb port, the mcp73811 adheres to all the specifications governing the usb power bus. the mcp73811/2 employ a constant current/constant voltage charge algorithm. the constant voltage regula- tion is fixed at 4.20v, with a tight regulation tolerance of 1%. for the mcp73811, the constant current value is selected as 85 ma (low power usb port) or 450 ma (high power usb port) with a digital input signal on the prog input. for the MCP73812, the constant current value is set with one external resistor. the mcp73811/2 limit the charge current based on die temperature during high power or high ambient conditions. this thermal regulation optimizes the charge cycle time while main taining device reliability. the mcp73811/2 are fully specified over the ambient temperature range of -40c to +85c. the mcp73811/2 are available in a 5-lead, sot-23 package. package types v dd v bat 5 5-pin sot-23 1 3 4 2 ce prog v ss simple, miniature single-cell, fully integrat e d li-ion / li-polymer charge management controllers
mcp73811/2 ds22036a-page 2 ? 2007 microchip technology inc. typical applications functional block diagram ce v dd v ss prog v bat + - single li-ion cell 4 MCP73812 5 3 1 500 ma li-ion battery charger 2 2k ce v dd v ss prog v bat + - single li-ion cell 4 mcp73811 5 3 1 1f 450 ma li-ion ba ttery charger 2 v in 1f 1f v in 1f + - reference generator v ref (1.21v) v bat v dd v bat g=0.001 v ss direction control + - direction control 6a + - ca 157.3 k 388.7 k + - va ce charge enable 2.7 k prog 111 k 528.6 k mcp73811 MCP73812 12 k
? 2007 microchip technology inc. ds22036a-page 3 mcp73811/2 1.0 electrical characteristics absolute maximum ratings? v dd n ................................................................................7.0v all inputs and outputs w.r.t. v ss ............... -0.3 to (v dd +0.3)v maximum junction temperature, t j ............ internally limited storage temperature .....................................-65c to +150c esd protection on all pins human body model (1.5 kw in series with 100 pf) ...... 4kv machine model (200pf, no se ries resistance) ..............400v ? notice: stresses above those listed under ?maximum ratings? may cause permanent damage to the device. this is a stress rating only and functional operation of the device at those or any ot her conditions above those indicated in the operational listings of this specification is not implied. exposure to maximum rating conditions for extended periods may affect device reliability. dc characteristics electrical specifications: unless otherwise indicated, all limits apply for v dd = [v reg (typ.) + 0.3v] to 6v, t a = -40c to +85c. typical values are at +25c, v dd = [v reg (typ.) + 1.0v] parameters sym min typ max units conditions supply input supply voltage v dd 3.75 ? 6 v supply current i ss ? 1000 1500 a charging ? 50 100 a standby (ce = v ss ) ? 1.2 5 a shutdown (v dd < v bat - 100 mv) voltage regulation (constant voltage mode) regulated output voltage v reg ?4.20?vv dd =[v reg (typ)+1v] i out =10 ma output voltage tolerance v rtol -1 ? +1 % t a =-5c to +55c line regulation |( v bat /v bat ) / v dd | ? 0.09 0.30 %/v v dd =[v reg (typ)+1v] to 6v i out =10 ma load regulation | v bat /v bat | ? 0.09 0.30 % i out =10 ma to 50 ma v dd =[v reg (typ)+1v] supply ripple attenuation psrr ? 52 ? db i out =10 ma, 10 hz to 1 khz ?47?dbi out =10 ma, 10 hz to 10 khz ?22?dbi out =10 ma, 10 hz to 1 mhz current regulation (fast charge constant-current mode) fast charge current i reg ? 85 ? ma mcp73811 - prog = low regulation ? 450 ? ma mcp73811 - prog = high ? 50 ? ma MCP73812 - prog = 20 k ? 100 ? ma MCP73812 - prog = 10 k ? 500 ? ma MCP73812 - prog = 2 k charge current tolerance i rtol -10 ? +10 % t a =-5c to +55c pass transistor on-resistance on-resistance r dson ? 400 ? m v dd = 3.75v, t j = 105c battery discharge current output reverse leakage i discharge current ? 0.5 2 a shutdown (v dd < v bat - 100 mv)
mcp73811/2 ds22036a-page 4 ? 2007 microchip technology inc. temperature specifications charge enable (ce), prog input - mcp73811 input high voltage level v ih 2??v input low voltage level v il ??0.8v input leakage current i lk ?0.01 1av ce = v dd , v prog = v dd prog input - MCP73812 charge impedance range r prog 2?20k MCP73812 automatic power down (direction control) automatic power down entry threshold v pd v bat + 10 mv v bat + 50 mv ? v 2.3v < v bat < v reg v dd falling automatic power down exit threshold v pdexit ?v bat + 150 mv v bat + 250 mv v2.3v < v bat < v reg v dd rising thermal shutdown die temperature t sd ? 150 ? c die temperature t sdhys ?10? c hysteresis electrical specifications: unless otherwise indicated, all limits apply for v dd = [v reg (typ.) + 0.3v] to 6v. typical values are at +25c, v dd = [v reg (typ.) + 1.0v] parameters sym min typ max units conditions temperature ranges specified temperature range t a -40 ? +85 c operating temperature range t j -40 ? +125 c storage temperature range t a -65 ? +150 c thermal package resistances thermal resistance, 5-lead, sot-23 ja ? 230 ? c/w 4-layer jc51-7 standard board, natural convection dc characteristics (continued) electrical specifications: unless otherwise indicated, all limits apply for v dd = [v reg (typ.) + 0.3v] to 6v, t a = -40c to +85c. typical values are at +25c, v dd = [v reg (typ.) + 1.0v] parameters sym min typ max units conditions
? 2007 microchip technology inc. ds22036a-page 5 mcp73811/2 2.0 typical performance curves note: unless otherwise indicated, v dd = [v reg (typ.) + 1v], i out = 10 ma and t a = +25c, constant-voltage mode. figure 2-1: battery regulation voltage (v bat ) vs. supply voltage (v dd ). figure 2-2: battery regulation voltage (v bat ) vs. ambient temperature (t a ). figure 2-3: output leakage current (i discharge ) vs. battery regulation voltage (v bat ). figure 2-4: charge current (i out ) vs. supply voltage (v dd ) - mcp73811. figure 2-5: charge current (i out ) vs. supply voltage (v dd ) - mcp73811. figure 2-6: charge current (i out ) vs. ambient temperature (t a ) - mcp73811. note: the graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purpose s only. the performance characteristics listed herein are not tested or guaranteed. in so me graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power suppl y range) and therefore outs ide the warranted range. 4.170 4.175 4.180 4.185 4.190 4.195 4.200 4.205 4.210 4.50 4.75 5.00 5.25 5.50 5.75 6.00 supply voltage (v) battery regulation voltage (v) i out = 10 ma i out = 100 ma i out = 450 ma 4.170 4.175 4.180 4.185 4.190 4.195 4.200 4.205 4.210 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 ambient temperature (c) battery regulation voltage (v) i out = 10 ma i out = 100 ma i out = 450 ma 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 3.00 3.20 3.40 3.60 3.80 4.00 4.20 battery regulation voltage (v) output leakage current (a) +85c -40c +25c 80 81 82 83 84 85 86 87 88 89 90 4.5 4.75 5 5.25 5.5 5.75 6 supply voltage (v) charge current (ma) prog = low temp = +25c 425 430 435 440 445 450 455 460 4.5 4.75 5 5.25 5.5 5.75 6 supply voltage (v) charge current (ma) prog = high temp = 25c 65 70 75 80 85 90 95 100 -40-30-20-10 0 1020304050607080 ambient temperature (c) charge current (ma) prog = low v dd = 5 v
mcp73811/2 ds22036a-page 6 ? 2007 microchip technology inc. typical performance curves (continued) note: unless otherwise indicated, v dd = [v reg (typ.) + 1v], i out = 10 ma and t a = +25c, constant-voltage mode. figure 2-7: charge current (i out ) vs. ambient temperature (t a ) - mcp73811. figure 2-8: charge current (i out ) vs. programming resistor (r prog ) - MCP73812. figure 2-9: charge current (i out ) vs. supply voltage (v dd ) - MCP73812. figure 2-10: charge current (i out ) vs. supply voltage (v dd ) - MCP73812. figure 2-11: charge current (i out ) vs. ambient temperature (t a ) - MCP73812. figure 2-12: charge current (i out ) vs. ambient temperature (t a ) - MCP73812. 400 410 420 430 440 450 460 470 480 -40-30-20-10 0 1020304050607080 ambient temperature (c) charge current (ma) prog = high v dd = 5v 0 50 100 150 200 250 300 350 400 450 500 550 2 4 6 8 10 12 14 16 18 20 programming resistor (k ? ) charge current (ma) 96 97 98 99 100 101 102 103 104 4.50 4.75 5.00 5.25 5.50 5.75 6.00 supply voltage (v) charge current (ma) r prog = 10 k ? ? ? ?
? 2007 microchip technology inc. ds22036a-page 7 mcp73811/2 typical performance curves (continued) note: unless otherwise indicated, v dd = [v reg (typ.) + 1v], i out = 10 ma and t a = +25c, constant-voltage mode. figure 2-13: charge current (i out ) vs. junction temperature (t j ) - MCP73812. figure 2-14: charge current (i out ) vs. junction temperature (t j ) - MCP73812. figure 2-15: power supply ripple rejection (psrr). figure 2-16: power supply ripple rejection (psrr). figure 2-17: line transient response. figure 2-18: line transient response. 0 15 30 45 60 75 90 105 120 25 35 45 55 65 75 85 95 105 115 125 135 145 155 junction temperature (c) charge current (ma) r prog = 10 k ? 0 75 150 225 300 375 450 525 25 35 45 55 65 75 85 95 105 115 125 135 145 155 junction temperature (c) charge current (ma) r prog = 2 k ? -60 -50 -40 -30 -20 -10 0 0.01 0.1 1 10 100 1000 frequency (khz) attenuation (db) v ac = 100 mvp-p i out = 10 ma c out = 4.7 f, x7r ceramic -60 -50 -40 -30 -20 -10 0 0.01 0.1 1 10 100 1000 frequency (khz) attenuation (db) v ac = 100 mvp-p i out = 100 ma c out = 4.7 f, x7r ceramic -2 0 2 4 6 8 10 12 14 0 20 40 60 80 100 120 140 160 180 200 time (s) source voltage (v) -0.30 -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 output ripple (v) i out = 10 ma c out = 4.7 f, x7r ceramic -2 0 2 4 6 8 10 12 14 0 20 40 60 80 100 120 140 160 180 200 time (s) source voltage (v) -0.30 -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 output ripple (v) i out = 100 ma c out = 4.7 f, x7r ceramic
mcp73811/2 ds22036a-page 8 ? 2007 microchip technology inc. typical performance curves (continued) note: unless otherwise indicated, v dd = [v reg (typ.) + 1v], i out = 10 ma and t a = +25c, constant-voltage mode. figure 2-19: load transient response. figure 2-20: load transient response. figure 2-21: complete charge cycle (180 mah li-ion battery). figure 2-22: complete charge cycle (1000 mah li-ion battery). -0.05 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0 20 40 60 80 100 120 140 160 180 200 time (s) output current (a) -0.12 -0.10 -0.08 -0.06 -0.04 -0.02 0.00 0.02 0.04 output ripple (v) c out = 4.7 f, x7r ceramic -0.20 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 0 20 40 60 80 100 120 140 160 180 200 time (s) output current (a) -0.30 -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 output ripple (v) c out = 4.7 f, x7r ceramic 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 20 40 60 80 100 120 140 160 180 time (s) battery voltage (v) 0 20 40 60 80 100 120 charge current (ma) MCP73812/iot v dd = 5.2v r prog = 10 k ? 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 30 60 90 120 150 180 210 240 time (s) battery voltage (v) 0 100 200 300 400 500 600 charge current (ma) mcp738312 v dd = 5.2v r prog = 2 k ?
? 2007 microchip technology inc. ds22036a-page 9 mcp73811/2 3.0 pin description the descriptions of the pins are listed in table 3-1 . table 3-1: pin function tables 3.1 charge enable input (ce) a logic high enables battery charging. a logic low disables battery charging. the charge enable input is compatible with 1.8v logic. 3.2 battery management 0v reference (v ss ) connect to negative terminal of battery and input supply. 3.3 battery charge control output (v bat ) connect to positive terminal of battery. drain terminal of internal p-channel mosf et pass transistor. bypass to v ss with a minimum of 1 f to ensure loop stability when the battery is disconnected. 3.4 battery management input supply (v dd ) a supply voltage of [v reg (typ.) + 0.3v] to 6v is recommended. bypass to v ss with a minimum of 1 f. 3.5 current regulation set (prog) for the mcp73811, the current regulation set input (prog) functions as a digital input selection. a logic low selects a 85 ma charge current; a logic high selects a 450 ma charge current. for the MCP73812, the charge current is set by placing a resistor from prog to v ss . pin number symbol function sot-23-5 1 ce active high charge enable 2v ss battery management 0v reference 3v bat battery charge control output 4v dd battery management input supply 5 prog current regulation set and charge control enable
mcp73811/2 ds22036a-page 10 ? 2007 microchip technology inc. 4.0 device overview the mcp73811/2 are simple, but fully integrated linear charge management controllers. figure 4-1 depicts the operational flow algorithm. figure 4-1: flow chart. 4.1 undervoltage lockout (uvlo) the mcp73811/2 does not have an internal under voltage lockout (uvlo) circuit. 4.2 charge qualification when the input power is applied, the input supply must rise 150 mv above the battery voltage before the mcp73811/2 becomes operational. the automatic power down circuit places the device in a shutdown mode if the input supply falls to within +50 mv of the battery voltage. the automatic circuit is al ways active. whenever the input supply is within +50 mv of the voltage at the v bat pin, the mcp73811/2 is placed in a shutdown mode. during power down condition, the battery reverse dis- charge current is less than 2 a. for a charge cycle to begin, the automatic power down conditions must be met and the charge enable input must be above the input high threshold. 4.3 preconditioning the mcp73811/2 does not support preconditioning of deeply depleted cells. 4.4 constant current mode - fast charge during the constant curr ent mode, the selected (mcp73811) or programmed (MCP73812) charge current is supplied to the battery or load. for the MCP73812, the charge current is established using a single resistor from prog to v ss . the program resistor and the charge current are calculated using the following equation: equation 4-1: constant current mode is maintained until the voltage at the v bat pin reaches the regulation voltage, v reg . 4.5 constant voltage mode when the voltage at the v bat pin reaches the regulation voltage, v reg , constant voltage regulation begins. the regulation voltage is factory set to 4.20v with a tolerance of 1.0%. 4.6 charge termination the charge cycle is termi nated by removing the battery from the charger, removing input power, or driving the charge enable input (ce) to a logic low. an automatic charge termination method is not implemented. 4.7 automatic recharge the mcp73811/2 does not support automatic recharge cycles since automatic ch arge termination has not been implemented. in essence, the mcp73811/2 is always in a charge cycle wh enever the qualification parameters have been met. shutdown mode* v dd < v pd constant current mode charge current = i reg constant voltage mode charge voltage = v reg * continuously monitored v bat = v reg standby mode* ce = low v bat < v reg i reg 1000v r prog ---------------- - = where: r prog = kilo-ohms i reg = milliamperes
? 2007 microchip technology inc. ds22036a-page 11 mcp73811/2 4.8 thermal regulation the mcp73811/2 limits the charge current based on the die temperature. the thermal regulation optimizes the charge cycle time wh ile maintaining device reliability. figure 4-2 depicts the thermal regulation for the mcp73811/2. . figure 4-2: thermal regulation. 4.9 thermal shutdown the mcp73811/2 suspends charge if the die temperature exceeds 150c. charging will resume when the die temperature has cooled by approximately 10c. the thermal shutdown is a secondary safety feature in the event that there is a failure within the thermal regulation circuitry. 0 75 150 225 300 375 450 525 25 35 45 55 65 75 85 95 105 115 125 135 145 155 junction temperature (c) charge current (ma) r prog = 2 k ?
mcp73811/2 ds22036a-page 12 ? 2007 microchip technology inc. 5.0 detailed description 5.1 analog circuitry 5.1.1 battery management input supply (v dd ) the v dd input is the input supply to the mcp73811/2. the mcp73811/2 automatically enters a power-down mode if the voltage on the v dd input falls to within +50 mv of the battery volta ge. this feature prevents draining the battery pack when the v dd supply is not present. 5.1.2 MCP73812 current regulation set (prog) for the MCP73812, the charge current regulation can be scaled by placing a programming resistor (r prog ) from the prog input to v ss . the program resistor and the charge current are calculated using the following equation: equation 5-1: 5.1.3 battery charge control output (v bat ) the battery charge control ou tput is the drain terminal of an internal p-channel mosfet. the mcp73811/2 provides constant current and voltage regulation to the battery pack by controlling this mosfet in the linear region. the battery charge control output should be connected to the positive terminal of the battery pack. 5.2 digital circuitry 5.2.1 charge enable (ce) the charge enable input pin (ce) can be used to terminate a charge at any ti me during the charge cycle, as well as to initiate a char ge cycle or initiate a recharge cycle. driving the input to a logic high enables the device. driving the input to a logic low disables the device and terminates a charge cycle. when disabled, the device?s supply current is reduced to 50 a, typically. 5.2.2 mcp73811 current regulation select (prog) for the mcp73811, driving the prog input to a logic low selects the low charge current setting (85 ma). driving the prog input to a logic high selects the high charge current setting (450 ma). i reg 1000v r prog ---------------- - = where: r prog = kilo-ohms i reg = milliamperes
? 2007 microchip technology inc. ds22036a-page 13 mcp73811/2 6.0 applications the mcp73811/2 is designed to operate in conjunction with a host microcontroller or in stand-alone applications. the mcp73811/2 provides the preferred charge algorithm for lithium-ion and lithium-polymer cells constant-current followed by constant-voltage. figure 6-1 depicts a typical stand-alone application circuit, while figures 6-2 and 6-3 depict the accompanying charge profile. figure 6-1: typical application circuit. figure 6-2: typical charge profile (180 mah battery). figure 6-3: typical charge profile in thermal regulation (1000 mah battery). 6.1 application circuit design due to the low efficiency of linear charging, the most important factors are thermal design and cost, which are a direct function of the input voltage, output current and thermal impedance between the battery charger and the ambient cooling air. the worst-case situation is when the device has transitioned from the preconditioning mode to the constant-current mode. in this situation, the battery charger has to dissipate the maximum power. a trade-off must be made between the charge current, cost and thermal requirements of the charger. 6.1.1 component selection selection of the external components in figure 6-1 is crucial to the integrity an d reliability of the charging system. the following discussi on is intended as a guide for the component selection process. 6.1.1.1 charge current the preferred fast charge current for lithium-ion cells is at the 1c rate, with an absolute maximum current at the 2c rate. for example, a 500 mah battery pack has a preferred fast charge current of 500 ma. charging at this rate provides the shortest charge cycle times without degradation to t he battery pack performance or life. ce v dd v ss prog v bat + - single li-ion cell 4 MCP73812 5 3 1 c in li-ion battery charger 2 r prog c out regulated wall cube 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 20 40 60 80 100 120 140 160 180 time (s) battery voltage (v) 0 20 40 60 80 100 120 charge current (ma) MCP73812/iot v dd = 5.2v r prog = 10 k ? 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 30 60 90 120 150 180 210 240 time (s) battery voltage (v) 0 100 200 300 400 500 600 charge current (ma) mcp738312 v dd = 5.2v r prog = 2 k ?
mcp73811/2 ds22036a-page 14 ? 2007 microchip technology inc. 6.1.1.2 thermal considerations the worst-case power dissipation in the battery charger occurs when the input voltage is at the maximum and the device has transitioned from the preconditioning mode to the constant-current mode. in this case, the power dissipation is: equation 6-1: power dissipation with a 5v, 10% input voltage source is: equation 6-2: this power dissipation with the battery charger in the sot-23-5 package will cause thermal regulation to be entered as depicted in figure 6-3 . 6.1.1.3 external capacitors the mcp73811/2 is stable with or without a battery load. in order to maintain good ac stability in the constant-voltage mode, a minimum capacitance of 1 f is recommended to bypass the v bat pin to v ss . this capacitance provides compensation when there is no battery load. in addition, the battery and intercon- nections appear inductive at high frequencies. these elements are in the control feedback loop during constant-voltage mode. therefore, the bypass capacitance may be necessary to compensate for the inductive nature of the battery pack. virtually any good quality outp ut filter capacitor can be used, independent of the capacitor?s minimum effective series resistance (esr) value. the actual value of the capacitor (and its associated esr) depends on the output load current. a 1 f ceramic, tantalum or aluminum electrolytic capacitor at the output is usually sufficient to ensure stability for output currents up to a 500 ma. 6.1.1.4 reverse-blocking protection the mcp73811/2 provides protection from a faulted or shorted input. without t he protection, a faulted or shorted input would discharge the battery pack through the body diode of the internal pass transistor. 6.1.1.5 charge inhibit the charge enable input pin (ce) can be used to terminate a charge at any ti me during the charge cycle, as well as to initiate a char ge cycle or initiate a recharge cycle. driving the input to a logic high enables the device. driving the input to a logic low disables the device and terminates a charge cycle. when disabled, the device?s supply current is reduced to 50 a, typically. 6.2 pcb layout issues for optimum voltage regulation, place the battery pack as close as possible to the device?s v bat and v ss pins, recommended to minimize voltage drops along the high current-carrying pcb traces. if the pcb layout is used as a heatsink, adding many vias in the heatsink pad can help conduct more heat to the backplane of the pcb, thus reducing the maximum junction temperature. figures 6-4 and 6-5 depict a typical layout with pcb heatsinking. figure 6-4: typical layout (top). figure 6-5: typical layout (bottom). powerdissipation v ddmax v pthmin ? () i regmax = where: v ddmax = the maximum input voltage i regmax = the maximum fast charge current v pthmin = the minimum transition threshold voltage powerdissipation 5.5v 2.7v ? () 500 ma 1.4 w == c out r prog c in MCP73812 v bat v dd v ss v bat v ss v dd
? 2007 microchip technology inc. ds22036a-page 15 mcp73811/2 7.0 package information 7.1 package marking information 5-pin sot-23 xxnn standard * part number code mcp73811t-420i/ot ksnn MCP73812t-420i/ot kwnn example: 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 nu mber 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 1 ksnn 1 * custom output voltages available upon request. contact your local microchip sale s office for more information.
mcp73811/2 ds22036a-page 16 ? 2007 microchip technology inc. 5-lead plastic small outline transistor (ot or ct) [sot-23] notes: 1. dimensions d and e1 do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.127 mm per side. 2. dimensioning and tolerancing per asme y14.5m. bsc: basic dimension. theoretically exact value shown without tolerances. note: for the most current package drawings, please see the microchip packaging specification located at http://www.microchip.com/packaging units millimeters dimension limits min nom max number of pins n 5 lead pitch e 0.95 bsc outside lead pitch e1 1.90 bsc overall height a 0.90 ? 1.45 molded package thickness a2 0.89 ? 1.30 standoff a1 0.00 ? 0.15 overall width e 2.20 ? 3.20 molded package width e1 1.30 ? 1.80 overall length d 2.70 ? 3.10 foot length l 0.10 ? 0.60 footprint l1 0.35 ? 0.80 foot angle 0 ? 30 lead thickness c 0.08 ? 0.26 lead width b 0.20 ? 0.51 n b e e1 d 1 2 3 e e 1 a a1 a2 c l l1 microchip technology drawing c04-091b
? 2007 microchip technology inc. ds22036a-page 17 mcp73811/2 appendix a: revision history revision a (march 2007) ? original release of this document.
mcp73811/2 ds22036a-page 18 ? 2007 microchip technology inc. notes:
? 2007 microchip technology inc. ds22036a-page 19 mcp73811/2 product identification system to order or obtain information, e.g., on pricing or de livery, refer to the factory or the listed sales office . device: mcp73811t: li-ion charger w/selectable charge current, tape and reel MCP73812t: li-ion charger w/selectable charge current, tape and reel voltage options *: 420 = 4.2v ?standard? *contact factory for other output voltage options. temperature: i = -40 c to +85 c package type: ot = small outline transistor (sot-23), 5-lead part no. xxx voltage device options x temperature /xx package examples: a) mcp73811t-420i/ot: 4.2v charger sot-23-5 pkg. a) MCP73812t-420i/ot: 4.2v charger sot-23-5 pkg. ?
mcp73811/2 ds22036a-page 20 ? 2007 microchip technology inc. notes:
? 2007 microchip technology inc. ds22036a-page 21 information contained in this publication regarding device applications and the like is prov ided only for your convenience and may be superseded by updates. it is your responsibility to ensure that your application me ets with your specifications. microchip makes no representations or warranties of any kind whether express or implied, written or oral, statutory or otherwise, related to the information, including but not limited to its condition, quality, performance, merchantability or fitness for purpose . microchip disclaims all liability arising from this information and its use. use of microchip devices in life support and/or safe ty applications is entirely at the buyer?s risk, and the buyer agrees to defend, indemnify and hold harmless microchip from any and all damages, claims, suits, or expenses resulting fr om such use. no licenses are conveyed, implicitly or ot herwise, under any microchip intellectual property rights. trademarks the microchip name and logo, the microchip logo, accuron, dspic, k ee l oq , k ee l oq logo, micro id , mplab, pic, picmicro, picstart, pro mate, powersmart, rfpic, and smartshunt are registered trademarks of microchip technology incorporated in the u.s.a. and other countries. amplab, filterlab, linear active thermistor, migratable memory, mxdev, mxlab, ps logo, seeval, smartsensor and the embedded control solutions company are registered trademarks of microc hip technology incorporated in the u.s.a. analog-for-the-digital age, a pplication maestro, codeguard, dspicdem, dspicdem.net, dspicworks, ecan, economonitor, fansense, flexrom, fuzzylab, in-circuit serial programming, icsp, icepic, mindi, miwi, mpasm, mplab certified logo, mplib, mplink, pickit, picdem, picdem.net, piclab, pictail, powercal, powerinfo, powermate, powertool, real ice, rflab, rfpicdem, select mode, smart serial, smarttel, total endurance, uni/o, wiperlock and zena are trademarks of microchip technology incorporated in the u.s.a. and other countries. sqtp is a service mark of mi crochip technology incorporated in the u.s.a. all other trademarks mentioned herein are property of their respective companies. ? 2007, microchip technology incorporated, printed in the u.s.a., all rights reserved. printed on recycled paper. note the following details of the code protection feature on microchip devices: ? microchip products meet the specification cont ained in their particular microchip data sheet. ? microchip believes that its family of products is one of the mo st secure families of its kind on the market today, when used i n the intended manner and under normal conditions. ? there are dishonest and possibly illegal meth ods used to breach the code protection fe ature. all of these methods, to our knowledge, require using the microchip pr oducts in a manner outside the operating specif ications contained in microchip?s data sheets. most likely, the person doing so is engaged in theft of intellectual property. ? microchip is willing to work with the customer who is concerned about the integrity of their code. ? neither microchip nor any other semiconduc tor manufacturer can guarantee the security of their code. code protection does not mean that we are guaranteeing the product as ?unbreakable.? code protection is constantly evolving. we at microchip are committed to continuously improving the code protection features of our products. attempts to break microchip?s c ode protection feature may be a violation of the digital millennium copyright act. if such acts allow unauthorized access to your softwar e or other copyrighted work, you may have a right to sue for relief under that act. microchip received iso/ts-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona, gresham, oregon and mountain view, california. the company?s quality system processes and procedures are for its pic ? mcus and dspic ? dscs, k ee l oq ? code hopping devices, serial eeproms, microperipherals, nonvolatile memory and analog products. in addition, microchip?s quality system for the design and manufacture of development syst ems is iso 9001:2000 certified.
ds22036a-page 22 ? 2007 microchip technology inc. americas corporate office 2355 west chandler blvd. chandler, az 85224-6199 tel: 480-792-7200 fax: 480-792-7277 technical support: http://support.microchip.com web address: www.microchip.com atlanta duluth, ga tel: 678-957-9614 fax: 678-957-1455 boston westborough, ma tel: 774-760-0087 fax: 774-760-0088 chicago itasca, il tel: 630-285-0071 fax: 630-285-0075 dallas addison, tx tel: 972-818-7423 fax: 972-818-2924 detroit farmington hills, mi tel: 248-538-2250 fax: 248-538-2260 kokomo kokomo, in tel: 765-864-8360 fax: 765-864-8387 los angeles mission viejo, ca tel: 949-462-9523 fax: 949-462-9608 santa clara santa clara, ca tel: 408-961-6444 fax: 408-961-6445 toronto mississauga, ontario, canada tel: 905-673-0699 fax: 905-673-6509 asia/pacific asia pacific office suites 3707-14, 37th floor tower 6, the gateway habour city, kowloon hong kong tel: 852-2401-1200 fax: 852-2401-3431 australia - sydney tel: 61-2-9868-6733 fax: 61-2-9868-6755 china - beijing tel: 86-10-8528-2100 fax: 86-10-8528-2104 china - chengdu tel: 86-28-8665-5511 fax: 86-28-8665-7889 china - fuzhou tel: 86-591-8750-3506 fax: 86-591-8750-3521 china - hong kong sar tel: 852-2401-1200 fax: 852-2401-3431 china - qingdao tel: 86-532-8502-7355 fax: 86-532-8502-7205 china - shanghai tel: 86-21-5407-5533 fax: 86-21-5407-5066 china - shenyang tel: 86-24-2334-2829 fax: 86-24-2334-2393 china - shenzhen tel: 86-755-8203-2660 fax: 86-755-8203-1760 china - shunde tel: 86-757-2839-5507 fax: 86-757-2839-5571 china - wuhan tel: 86-27-5980-5300 fax: 86-27-5980-5118 china - xian tel: 86-29-8833-7250 fax: 86-29-8833-7256 asia/pacific india - bangalore tel: 91-80-4182-8400 fax: 91-80-4182-8422 india - new delhi tel: 91-11-4160-8631 fax: 91-11-4160-8632 india - pune tel: 91-20-2566-1512 fax: 91-20-2566-1513 japan - yokohama tel: 81-45-471- 6166 fax: 81-45-471-6122 korea - gumi tel: 82-54-473-4301 fax: 82-54-473-4302 korea - seoul tel: 82-2-554-7200 fax: 82-2-558-5932 or 82-2-558-5934 malaysia - penang tel: 60-4-646-8870 fax: 60-4-646-5086 philippines - manila tel: 63-2-634-9065 fax: 63-2-634-9069 singapore tel: 65-6334-8870 fax: 65-6334-8850 taiwan - hsin chu tel: 886-3-572-9526 fax: 886-3-572-6459 taiwan - kaohsiung tel: 886-7-536-4818 fax: 886-7-536-4803 taiwan - taipei tel: 886-2-2500-6610 fax: 886-2-2508-0102 thailand - bangkok tel: 66-2-694-1351 fax: 66-2-694-1350 europe austria - wels tel: 43-7242-2244-39 fax: 43-7242-2244-393 denmark - copenhagen tel: 45-4450-2828 fax: 45-4485-2829 france - paris tel: 33-1-69-53-63-20 fax: 33-1-69-30-90-79 germany - munich tel: 49-89-627-144-0 fax: 49-89-627-144-44 italy - milan tel: 39-0331-742611 fax: 39-0331-466781 netherlands - drunen tel: 31-416-690399 fax: 31-416-690340 spain - madrid tel: 34-91-708-08-90 fax: 34-91-708-08-91 uk - wokingham tel: 44-118-921-5869 fax: 44-118-921-5820 w orldwide s ales and s ervice 12/08/06

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