Techcode® ÓÉ Foxit PDF Editor ±à¼°æȨËùÓÐ (c) by Foxit Software Company, 2004 ½öÓÃÓÚÆÀ¹À¡£ DATASHEET 1A Standalone Linear Li-lon Battery Charger with Thermal Regulation TD9056A/B 汪工 ＴＥＬ：１３８２８７１９４１０ ＱＱ：１９２９７９４２３８ General Description Features The TD9056 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 TD9056 ideally suited for portable applications. Furthermore, the TD9056 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 TD9056 automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached. TD9056 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. z z z z z z z z z z z z Programmable Charge Current Up to 1000mA No MOSFET, Sense Resistor or Blocking Diode Rquired 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 Charge Status Output Pins C/10 Charge Termination 2.9V Trickle Charge Threshold (TD9056) Soft-Start Limits Inrush Current Available Radiator in SOP8/SOT23-5 Package,the Radiator need connect GND or impending Applications z z z z Cellular Telephones, PDAs, GPS Charging Docks and Cradles Digital Still Cameras, Portable Devices USB Bus-Powered Chargers,Chargers October, 20, 2011. Techcode Semiconductor Limited www.tongchuangwei.com 1 Techcode® DATASHEET 1A Standalone Linear Li-lon Battery Charger with Thermal Regulation TD9056A/B Package Types Figure 1. Package Types of TD9056 Pin Configurations Figure 2 Pin Configuration of TD9056(Top View) October, 20, 2011. Techcode Semiconductor Limited www.tongchuangwei.com 2 Techcode® DATASHEET 1A Standalone Linear Li-lon Battery Charger with Thermal Regulation TD9056A/B Pin Description Pin Name Pin Number TD9056A Description TD9056B TEMP 1 PROG 2 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 VIN 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. charge current is set by connecting a resistor RISET 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: IBAT=(VISET/RISET)*1200----(TD9056A) IBAT=(VISET/RISET)*1250----(TD9056B) GND 3 Vcc 4 BAT 5 STBY 6 CHRG 7 GND VIN is the power supply to the internal circuit. When VIN drops to within 30mv of the BAT pin voltage, TD9056 enters low power sleep mode, dropping BAT pin’s current to less than 2uA. 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. When the battery Charge Termination, the pin is pulled low by an internal switch, otherwise pin is in high impedance state. When the battery is being charged, the pin is pulled low by an internal switch, otherwise pin is in high impedance state. 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.(TD9056A) This pin can test Kelvin battery voltage, and thus precisely modulated constant CE FB 8 voltage battery charging voltage, avoiding the positive from the battery to the BAT pin LN2051 or contact resistance between the resistance wire and other parasitic resistance of the charge. If the FB pin and the BAT pin is an indirect one resistor, users can adjust the constant charging voltage(TD9056B) October, 20, 2011. Techcode Semiconductor Limited www.tongchuangwei.com 3 Techcode® DATASHEET TD9056A/B 1A Standalone Linear Li-lon Battery Charger with Thermal Regulation Ordering Information TD9056 □ □ □ Circuit Type Packing: A/B Blank：Tube R:Type and Reel BLANK M:SOP-8PP Electrical Characteristics (VIN = 5V, VOUT=12V, IOUT=100mA, TA = 25°C unless otherwise specified) Parameters Symbol Test Condition Min. Typ. Max. Unit Input Supply Voltage VCC 4.0 5 8.0 V Input Supply Current ICC Charge Mode, RPROG = 150 55 55 500 100 100 µ A 1.2kStandbyMode(Charge Terminated)Shutdown Mode (RPROG Not Connected,VCC < VBAT, or VCC< VUV) Regulated Output (Float) Voltage BAT Pin Current Test VFLOAL 0℃≤TA≤85℃，IBAT=40mA 4.137 4.2 4.263 V IBAT RPROG = 2.4k, Current 450 950 0 500 1000 ‐2.5 550 1050 ‐2.6 mA mA uA Mode RPROG = 1.2k, Current Mode Standby Mode, VBAT = 4.2V Trickle Charge Current ITRIKL VBAT<VTRIKL, RPROG=1.2K 120 130 140 mA Trickle Charge Threshold Voltage VTRIKL RPROG=1.2K, VBAT Rising 2.8 2.9 3.0 V Trickle Charge Hysteresis Voltage VTRHYS RPROG=1.2K 60 80 100 mV Junction Temperature in Constant TLIM 145 ℃ Temperature Mode October, 20, 2011. Techcode Semiconductor Limited www.tongchuangwei.com 4 Techcode® DATASHEET 1A Standalone Linear Li-lon Battery Charger with Thermal Regulation TD9056A/B Typical Performance Characteristics October, 20, 2011. Techcode Semiconductor Limited www.tongchuangwei.com 5 Techcode® 1A Standalone Linear Li-lon Battery Charger with Thermal Regulation DATASHEET TD9056A/B Typical Application Circuit October, 20, 2011. Techcode Semiconductor Limited www.tongchuangwei.com 6 Techcode® DATASHEET 1A Standalone Linear Li-lon Battery Charger with Thermal Regulation TD9056A/B indicator light state Charge state Red LED（CHRG） Greed LED(STDBY) 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 Rprog Current Setting RPROG(K) 10 5 4 3 2 1.66 1.5 1.33 1.2 IBAT(mA) 130 250 300 400 580 690 780 900 1000 October, 20, 2011. Techcode Semiconductor Limited www.tongchuangwei.com 7 Techcode® 1A Standalone Linear Li-lon Battery Charger with Thermal Regulation DATASHEET TD9056A/B Package Information SOP8-PP Package Outline Dimensions October, 20, 2011. Techcode Semiconductor Limited www.tongchuangwei.com 8 Techcode® DATASHEET 1A Standalone Linear Li-lon Battery Charger with Thermal Regulation TD9056A/B Design Notes October, 20, 2011. Techcode Semiconductor Limited www.tongchuangwei.com 9