DATASHEET ISL6298 FN9173 Rev 4.00 Li-ion/Li-Polymer Battery Charger March 9, 2006 The ISL6298 is an integrated single-cell Li-ion or Li-polymer Features battery charger optimized for low current applications. The Complete Charger for Single-Cell Li-ion Batteries targeted applications include mini-disk (MD) players, Blue Tooth headsets, or other applications that use low-capacity Integrated Pass Element and Current Sensor battery cells. No External Blocking Diode Required The ISL6298 is a linear charger that charges the battery in a 1% Voltage Accuracy CC/CV (constant current/constant voltage) profile. The Programmable Current Limit up to 450mA charge current is programmable with an external resistor up to 450mA during the CC phase. Once the battery voltage Programmable End-of-Charge Current reaches 4.2V (or 4.1V), the charger enters CV mode and the Preconditioning with 20% Fast Charge Current charge current starts to reduce. When the charger current 10% Accuracy at 250mA drops to a user-programmable threshold, the charger indicates the end-of-charge with a STATUS pin. The charger Charge Current Thermal Foldback does not actually terminate until a user-programmable total NTC Thermistor Interface for Battery Temperature Monitor fast charge time is reached. If the battery voltage drops to a User Programmable Safety Timer recharge threshold after termination, the charger will re- charge the battery to its full capacity. The charger Ambient Temperature Range: -20C to 70C preconditions the battery with 20% of the programmed CC Thermally-Enhanced QFN Packages current if the battery voltage is below 2.8V. The total precharge time is limited to 1/8 of the total fast charge time. Pb-Free Plus Anneal Available (RoHS Compliant) The ISL6298 features charge current thermal foldback to Applications guarantee safe operation when the printed circuit board is MD Players, Blue-Tooth Headsets and MP3 Players space-limited for thermal dissipation. Additional features include an NTC thermistor interface for monitoring the Portable Instruments ambient temperature, the ability to disable the time limit of PDAs, Cell Phones and Smart Phones the fast charge, an FAULT indication, and a thermally Stand-Alone Chargers enhanced QFN or DFN package. Related Literature Ordering Information Technical Brief TB363 Guidelines for Handling and TEMP. Processing Moisture Sensitive Surface Mount Devices PART RANGE PACKAGE PKG. (SMDs) PART (NOTE) MARKING (C) (Pb-FREE) DWG. Technical Brief TB379 Thermal Characterization of ISL6298CR4Z 6298CR4Z -20 to 70 16 Ld 4x4 QFN L16.4x4 Packaged Semiconductor Devices ISL6298CR4Z-T 6298CR4Z 16 Ld 4x4 QFN Tape and Reel Technical Brief TB389 PCB Land Pattern Design and ISL6298-2CR3Z 982Z -20 to 70 10 Ld 3x3 DFN L10.3x3 Surface Mount Guidelines for QFN Packages ISL6298-2CR3Z-T 982Z 10 Ld 3x3 DFN Tape and Reel Pinouts ISL6298-2CR4Z 6298CR4Z -20 to 70 16 Ld 4x4 QFN L16.4x4 ISL6298 (16 LD QFN) ISL6298 (10 LD DFN) ISL6298-2CR4Z-T 6298CR4Z 16 Ld 4x4 QFN Tape and Reel TOP VIEW TOP VIEW NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and 16 15 14 13 VIN 1 10 VBAT compatible with both SnPb and Pb-free soldering operations. Intersil VIN 1 12 VBAT FAULT 2 9 TEMP Pb-free products are MSL classified at Pb-free peak reflow 2 FAULT 11 TEMP temperatures that meet or exceed the Pb-free requirements of STATUS 3 8 IREF STATUS 3 10 IMIN IPC/JEDEC J STD-020. TIME 4 7 V2P8 TIME 4 9 IREF GND 5 6 EN 576 8 FN9173 Rev 4.00 Page 1 of 17 March 9, 2006 VIN GND VIN TOEN VBAT EN VBAT V2P8ISL6298 Absolute Maximum Ratings Thermal Information Supply Voltage (VIN) . -0.3 to 7V Thermal Resistance (Notes 1, 2) (C/W) (C/W) JA JC Output Pin Voltage (VBAT) -0.3 to 5.5V 4x4 QFN Package 41 4 Signal Input Voltage (TOEN, TIME, IREF, IMIN) -0.3 to 3.2V 3x3 DFN Package 46 4 Output Pin Voltage (STATUS, FAULT) -0.3 to 7V Maximum Junction Temperature (Plastic Package) 150C Charge Current . 500mA Maximum Storage Temperature Range .-65C to 150C Maximum Lead Temperature (Soldering 10s) . 300C Recommended Operating Conditions Ambient Temperature Range -20C to 70C Supply Voltage, VIN . 4.3V to 6.5V Charge Current . 75mA to 450mA CAUTION: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTES: 1. is measured in free air with the component mounted on a high effective thermal conductivity test board with direct attach features. See JA Tech Brief TB379. 2. , case temperature location is at the center of the exposed metal pad on the package underside. See Tech Brief TB379. JC Electrical Specifications Typical values are tested at VIN = 5V and 25C Ambient Temperature, maximum and minimum values are guaranteed over 0C to 70C Ambient Temperature with a supply voltage in the range of 4.3V to 6.5V, unless otherwise noted. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS POWER-ON RESET Rising VIN Threshold 3.0 3.4 4.0 V Falling VIN Threshold (Note 3) 2.25 2.4 2.65 V STANDBY CURRENT VBAT Pin Sink Current I VIN floating or EN = LOW - - 3.0 A STANDBY VIN Pin Supply Current I VBAT floating and EN pulled low - 30 - A VIN VIN Pin Supply Current I VBAT floating and EN floating - 1 - mA VIN VOLTAGE REGULATION Output Voltage V For ISL6298 only 4.059 4.10 4.141 V CH Output Voltage V For ISL6298-2 only 4.158 4.20 4.242 V CH Power MOSFET On Resistance VBAT = 3.7V, I = 0.3A - 0.5 - CHARGE CHARGE CURRENT Constant Charge Current I R = 80k, V = 3.7V 225 250 275 mA CHARGE IREF BAT Trickle Charge Current I R = 80k, V = 2.0V 45 55 64 mA TRICKLE IREF BAT Constant Charge Current I V > 1.2V, V = 3.7V - 255 - mA CHARGE IREF BAT Trickle Charge Current I V > 1.2V, V = 2.0V - 52 - mA TRICKLE IREF BAT Constant Charge Current I V < 0.4V, V = 3.7V, T = 25C 75 100 125 mA CHARGE IREF BAT A Constant Charge Current I V < 0.4V, V = 3.7V, 0C ~ 50C 70 100 130 mA CHARGE IREF BAT Trickle Charge Current I V < 0.4V, V = 2.0V - 23 - mA TRICKLE IREF BAT End-of-Charge Threshold I R = 80k 14 25 36 mA EOC IMIN RECHARGE THRESHOLD Recharge Voltage Threshold V For ISL6298 only - 3.9 - V RECHRG Recharge Voltage Threshold V For ISL6298-2 only - 4.0 - V RECHRG FN9173 Rev 4.00 Page 2 of 17 March 9, 2006