????? nanjing top power asic corp. 1 TP4056 1a standalone linear li-lon battery charger with thermal regulation in sop-8 description the TP4056 is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. its sop package and low external component count make the TP4056 ideally suited for portable applications. furthermore, the TP4056 can work within usb and wall adapter. no blocking diode is required due to the internal pmosfet architecture and have prevent to negative charge current circuit. thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. the charge voltage is fixed at 4.2v, and the charge current can be programmed externally with a single resistor. the TP4056 automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached. TP4056 other features include current monitor, under voltage lockout, automatic recharge and two status pin to indicate charge termination and the presence of an input voltage. features programmable charge current up to 1000ma no mosfet, sense resistor or blocking diode required complete linear charger in sop-8 package for single cell lithium-ion batteries constant-current/constant-voltage charges single cell li-ion batteries directly from usb port preset 4.2v charge voltage with 1.5% accuracy automatic recharge two charge st atus output pins c/10 charge termination 2.9v trickle charge threshold (TP4056) soft-start limits inrush current available radiator in 8-lead sop package, the radiator need connect gnd or impending package/order information sop 8 order part number TP4056-42-sop8-pp photo part marking TP4056 absolute maximum ratings input supply voltage(v cc ) -0.3v 8v temp -0.3v 10v ce -0.3v 10v bat short-circuit duration continuous bat pin current 1200ma prog pin current 1200ua maximum junction temperature 145 operating ambient temperature range -40 85 lead temp.(soldering, 10sec) 260 applications cellular telephones, pdas, gps charging docks and cradles digital still cameras, portable devices usb bus-powered chargers,chargers complete charge cycle (1000mah battery) free datasheet http://www.datasheet.in/
????? nanjing top power asic corp. 2 temp(pin 1) :temperature sense input connecting temp pin to ntc thermistor s output in lithium ion battery pack. if temp pin s voltage is below 45% or above 80% of supply voltage v in for more than 0.15s, this means that battery s temperature is too high or too low, charging is suspended. the temperature sense function can be disabled by grounding the temp pin. prog(pin 2) : constant charge current setting and charge current monitor pin charge current is set by connecting a resistor r iset from this pin to gnd. when in precharge mode, the iset pin s voltage is regulated to 0.2v. when in constant charge current mode, the iset pin s voltage is regulated to 2v.in all modes during charging, the voltage on iset pin can be used to measure the charge current as follows: gnd(pin3) : ground terminal vcc(pin 4) : positive input supply voltage v in is the power supply to the internal circuit. when v in drops to within 30mv of the bat pin voltage, TP4056 enters low power sleep mode, dropping bat pin s current to less than 2ua. bat(pin5): battery connection pin. connect the positive terminal of the battery to bat pin. bat pin draws less than 2ua current in chip disable mode or in sleep mode. bat pin provides charge current to the battery and provides regulation voltage of 4.2v. (pin6): open drain charge status output when the battery charge termination, the pin is pulled low by an internal switch, otherwise pin is in high impedance state. (pin7): open drain charge status output when the battery is being charged, the pin is pulled low by an internal switch, otherwise pin is in high impedance state. ce (pin8): chip enable input. a high input will put the device in the normal operating mode. pulling the ce pin to low level will put the yp4056 into disable mode. the ce pin can be driven by ttl or cmos logic level. electrical characteristics the denotes specifications which apply over the full operating temperature range, otherwise specifications are at t a =25 v cc =5v unless otherwise noted. symbol parameter conditions min typ max uni ts v cc input supply voltage 4.0 5 8.0 v i cc input supply current charge mode, r prog = 1.2k standbymode(charge terminated) shutdown mode (r prog not connected, v cc < v bat , or v cc < v uv ) 150 55 55 500 100 100 a a a v floal regulated output (float) voltage 0 t a 85 i bat =40ma 4.137 4.2 4.263 v i bat bat pin current text condition:vbat=4.0v r prog = 2.4k, current mode r prog = 1.2k, current mode standby mode, v bat = 4.2v 450 950 0 500 1000 2.5 550 1050 6 ma ma a i trikl trickle charge current v bat ????? nanjing top power asic corp. 3 indicator light state charge state red led greed led charging bright extinguish charge termination extinguish bright vin too low; temperature of battery too low or too high; no battery extinguish extinguish bat pin connect 10u capacitance; no battery greed led bright red led coruscate t=1-4 s typical applications rprog current setting r prog (k) i bat (ma) 10 130 5 250 4 300 3 400 2 580 1.66 690 1.5 780 1.33 900 1.2 1000 free datasheet http://www.datasheet.in/
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