HX6009A

HX1001 HX6009 High Accuracy Linear Li-Lon Battery Charger Features Description
The

Programmable Charge Current Up to No MOSFET, Sense Resistor or Blocking Diode Required Constant-Current/Constant-Voltage



Maximize Charge Rate Charges Single Cell Li-Ion Batteries Preset 4.2V Charge Voltage with 1% Accuracy complete for single cell lithium-ion batteries. Its package and low external component count make the HX6009 ideally suited for portable applications. Furthermore, designed to the HX6009 work within is specifically USB power The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The HX6009 automatically terminates the charge cycle when the charge current drops to 1/10th the Automatic Recharge programmed value after the final float voltage is 2.9V Trickle Charge Threshold reached. Available in SOP8-PP Package The HX6009 converters are available in the Applications



a specifications. Without Risk of Overheating Directly from USB Port is constant-current/constant voltage linear charger 700mA Operation with Thermal Regulation to

HX6009 industry standard SOP8-PP power packages (or upon request). Charger for Li-Ion Coin Cell Batteries Portable MP3 Players, Wireless Headsets Multifunction Wristwatches Bluetooth Applications w w w. h x s e m i . c o m 1 HX6009 Typical Application Figure 1: Typical Application Circuit with Two LEDs Condition LED1 LED2 Battery charging ON OFF Charge complete OFF ON * IBAT = (VPROG/RSET)*900 * When charging in constant-current mode, the VPROG is usually 1V. www.hxsemi.com 2 HX6009 Pin Assignment Top View PIN NUMBER PIN NAME DESCRIPTION 1,8 N/C No Connect 2 PROG 3, 9 GND 4 VCC Positive Input Supply Voltage 5 BAT Charge Current Output 6 CHRG2 SOP8-PP Charge Current Program Ground Charge Complete Status Output Open-Drain Charge Status SOP8-PP 7 CHRG1 Output Absolute Maximum Ratings (Note 1)








Input Supply Voltage (VCC) ........................................................................................ –0.3V to 7V PROG............................................................................................................ – 0.3V to VCC + 0.3V BAT ......................................................................................................................... –0.3V to 7V CHRG1, CHRG2......................................................................................................... –0.3V to 7V BAT Pin Current ................................................................................................................ 800mA ℃ Operating Ambient Temperature Range (Note 2)................................................... –40℃ to 85℃ Storage Temperature Range …………………………………………….................. –65 ℃to 125℃ Lead Temperature (Soldering, 10 sec)................................................................................. 300℃ Maximum Junction Temperature ......................................................................................... 125 Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: The HX6009 is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assur ed by design, characterization and correlation with statistical process controls. www.hxsemi.com 3 HX6009 Pin Description N/C (Pin 1, 8): No Connect. PROG (Pin 2): Charge Current Program, Charge Current Monitor and Shutdown Pin. The charge current is programmed by connecting a 1% resistor, RPROG, to ground. When charging in constant-current mode, this pin servos to 1V. In all modes, the voltage on this pin can be used to measure the charge current using the following formula: IBAT = (VPROG/RSET)*900. GND (Pin 3, 9): Ground. VCC (Pin 4): Positive Input Supply Voltage. It Provides power to the charger VCC can range from 4.5V to 6.5V and should be bypassed with at least a 1uF capacitor. BAT (Pin 5): Charge Current Output. It should be bypassed with at least a 1uF capacitor. It Provides charge current to the battery and regulates the final float voltage to 4.2V. An internal precision resistor divider from this pin sets the float voltage which is disconnected in shutdown mode. CHRG2 (Pin 6): Charge Complete Status Output. See CHRG pin (Pin 7). CHRG1 (Pin 7): Open-Drain Charge Status Output. When the battery is charging, the CHRG1 pin is pulled low by an internal N-channel MOSFET. When the charge cycle is completed, high impedance is forced to the CHRG1 and CHRG2 (pin 6) is pulled low, indicating an “AC present” condition. www.hxsemi.com 4 HX6009 Packaging Information SOP8-PP (EXP PAD) Package Outline Dimension Symbol Dimensions In Millimeters Min Max Dimensions In Inches Min Max A 1.350 1.750 0.053 0.069 A1 0.050 0.150 0.004 0.010 A2 1.350 1.550 0.053 0.061 b 0.330 0.510 0.013 0.020 c 0.170 0.250 0.006 0.010 D D1 E E1 E2 4.700 3.202 3.800 5.800 2.313 5.100 3.402 4.000 6.200 2.513 0.185 0.126 0.150 0.228 0.091 0.200 0.134 0.157 0.244 0.099 e 1.270(BSC) 0.050(BSC) L 0.400 1.270 θ 0° 8° 0.016 0.050 0° 8° Subject changes without notice. www.hxsemi.com 5 Information furnished by Hexin Semiconductor is believed to be accurate and reliable. However, no responsibility is assumed for its use.