PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications General Description Features The AAT4681 SmartSwitch enables separate stand-alone AC adapter and PMU USB chargers to independently control a single low RDS(ON) power MOSFET between battery and system power output. A 20V version is available for multi-cell Li-ion applications and a 6V version is available for single-cell Li-ion applications. * Multi-Cell 20V Device and Single-Cell 6V Device * Dual Independent Gate Controls Independent Linear Regulator and SMPS Power Switch States are Maintained * 3mm x 3mm TDFN-10L package * Temperature Range: -40C to 85C The two P-channel power MOSFETs required in UMPC applications for controlling independent charger ICs can be consolidated to a single device, saving space and reducing cost. The single 20m P-channel device in the AAT4681/-1 has four times lower RDS(ON) than the equivalent path resistance formed by two series devices. Ordering options are available for multi-cell and singlecell Li-ion versions. For the single-cell application, a 6V device with dual independent gate control is available. For 2-cell and 3-cell applications a 20V ordinary P-channel device is available in the same package and pin configuration. Both devices are available in the TDFN-10L 3mm x 3mm package. Applications * Smart Phones * Sub Notebooks Smartbooks Netbooks * Ultra-Mobile PCs * Wireless Media Devices Typical Application 30m 20m D System Power S D D S D S S VIO G G Gate Control from Stand-Alone Charger GC Gate Control from PMU USB Charger GQ R1 Linear/PowerSwitch Gate Control Linear Control Detection STAT System Power Status Output Gate Control from Stand-Alone Charger GC N/C N/C GND N/C AAT4681, AAT4681-1 4681.2010.06.1.1 AAT4681-2 www.analogictech.com 1 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications Pin Descriptions Pin Name Pin # AAT4681/-1 AAT4681-2 1, 2, 3 4 5 S GQ GC S N/C GC 6 STAT N/C 7 8, 9, 10 GND D N/C D Function Source connection. Gate control from PMU charger. Gate control from stand-alone charger. Open drain status output. "STAT" signal "high" means QC is "on" and "STAT" signal low means GQ is "on" Ground connection Drain connection. Pin Configuration TDFN33-10L (Top View) AAT4681/-1 S S S GQ GC 2 1 10 2 9 3 8 4 7 5 6 AAT4681-2 D D D GND STAT S S S N/C GC www.analogictech.com 1 10 2 9 3 8 4 7 5 6 D D D N/C N/C 4681.2010.06.1.1 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications Absolute Maximum Ratings1 Symbol Description AAT4681, AAT4681-1 VD, VS VSTAT ISTAT VGC, VGQ ID IDM IS AAT4681-2 VDS VGS Drain or Source Voltage to GND STAT to GND STAT Current Gate Voltage Levels to GND Continuous Drain Current @ TA = 85C AAT4681 AAT4681-1 Pulsed Drain Current2 Continuous Source Current (Source-Drain Diode) Drain-Source Voltage Gate-Source Voltage TA = 25C TA = 70C ID Continuous Drain Current IDM IS Pulsed Drain Current Continuous Source Current (Source-Drain Diode) Value Units 6.0 -0.3 to 6.0 10 -0.3 to 6.0 7 5 10 -1.5 V V mA V A -20 12 4.0 3.2 24 -1.5 V V A A A A A A Thermal Characteristics3 Symbol Description TJ Operating Junction Temperature Range Maximum Soldering Temperature (at leads, 10 sec.) TLEAD TDFN33-10L Thermal Impedance Maximum Junction-to-Ambient Thermal Resistance JA Maximum Power Dissipation4 PD 1 2. 3. 4. Value Units -40 to +125 300 C C 50 2 C/W W Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Pulse width <300s, duty cycle <1%. TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: TJ = TA + PD * JA. Thermal Resistance is specified with approximately 1 square inch of 1 oz. copper. 4681.2010.06.1.1 www.analogictech.com 3 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications Electrical Characteristics TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C. Symbol Description AAT4681/-1 Input Voltage Range1 VSYS Under-Voltage Lockout VUVLO Quiescent Current IQ Drain-Source Leakage Current IDSS RDS(on) P-Channel On Resistance2 VHYS tGSW GQ-GC Transition Hysteresis GQ-GC Transition Delay STAT Logic Output Low VSTATLOW STAT Logic High Leakage Current ISTAT(SINK) AAT4681-2 Drain-Source Breakdown Voltage BVDSS Drain-Source On-Resistance2 RDS(ON) On-State Drain Current ID(ON) Gate Threshold Voltage VGS(th) Conditions Min Typ 1.8 For VSYS < VUVLO, GC active VD = 4.2V, TJ = 55C VGS = 0V, VDS = -5.5V, TJ = 55C VD = VGC = 4.2V, VGQ = GND, ID = 5A, TA = 25C 1.4 3.6 AAT4681 AAT4681-1 VGS VGS VGS VGS = = = = 0V, ID = -250A -4.5V, ID = -4.0A -4.5V, VDS = -5V (pulse)2 VDS, ID = -250A Units 5.5 V V A A 15 -5 25 28 300 18 23 Slew rate of QG @ 1ms ISTAT(SINK) = 1mA VSTAT = 5.5V, VGC = 5.5V, VGQ = GND Max 10 0.025 0.005 0.4 1 27 40 -20 -24 -0.8 m mV s V A V m A V Gate Drive Voltage GQ 0V GQ - GC GC VHYS 1. Where VSYS is the greater of VD or VS. 2. Pulse width < 300s, duty cycle < 1%. 4 www.analogictech.com 4681.2010.06.1.1 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications Hysteresis, GQ Ramp Time = 2.5ms Hysteresis, GQ Ramp Time = 500s (S = 5.5V; GC = 0.5V; RSTAT = 5K; VIO = 5.5V) (S = 5.5V; GC = 0.5V; RSTAT = 5K; VIO = 5.5V) Voltage (100mV/div) Voltage (100mV/div) AAT4681/-1 Typical Electrical Characteristics GQ GC STAT GQ GC STAT Time (100s/div) Time (20s/div) Timing Shutdown Current vs. Shutdown Voltage (S = 5.5V; GC = 0.5V; GQ ramp time = 2.5ms; RSTAT = 5K; VIO = 5.5V) 5 VG = 0.85V VG = 0.90V VG = 0.95V VG = 1V VG = 1.05V VG = 1.1V VG = 1.2V VG = 1.5V VG = 2V VG = 3V VG = 4V VG = 5V VG = 6V 4.5 Voltage (1V/div) 4 ISD (A) 3.5 GQ GC STAT 3 2.5 2 1.5 1 0.5 0 0 0.1 0.2 Time (1ms/div) 0.3 0.4 0.5 VSD (V) RDS(ON) vs. ISD On-Resistance vs. Junction Temperature (VS = 6V; IDS = 5A; Pulse width <300s; Duty Cycle < 1%) 28 Normalized RDS(ON) (m) 24 RDS(ON) (m) 1.80 VG = 2V VG = 3V VG = 4V VG = 5V VG = 6V 26 22 20 18 16 14 12 2 2.5 3 3.5 4 4.5 5 1.60 1.40 1.20 1.00 0.80 0.60 -50 0 25 50 75 100 125 150 TJ (C) ISD (A) 4681.2010.06.1.1 -25 www.analogictech.com 5 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications On-Resistance vs. Gate Voltage GC On-Resistance vs. Gate Voltage GC (VS = 6V; VGQ = 0V, IDS = 5A; Pulse Width < 300s, Duty Cycle < 1%) VS = 6V, VGC = 0V, IDS = 5A; Pulse Width < 300s, Duty Cycle < 1%) 50 50 45 45 RDS(ON) (m) RDS(ON) (m) AAT4681/-1 Typical Electrical Characteristics 40 35 30 25 40 35 30 25 20 20 15 15 10 10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 0 0.5 1 1.5 2 3 3.5 4 4.5 5 5.5 On-Resistance vs. Gate Voltage GC On-Resistance vs. Gate Voltage GQ VS = 6V, VGQ = 0V, IDS = 7A; Pulse Width < 300s, Duty Cycle < 1%) VS = 6V, VGQ = 0V, IDS = 7A; Pulse Width < 300s, Duty Cycle < 1%) 50 50 45 45 40 35 30 25 6 40 35 30 25 20 20 15 15 10 10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 0 VS - VGC (V) 6 2.5 VS - VGQ (V) RDS(ON) (m) RDS(ON) (m) VS - VGC (V) 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 VS - VGQ (V) www.analogictech.com 4681.2010.06.1.1 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications AAT4681-2 Typical Electrical Characteristics Output Characteristics Transfer Characteristics 14 9 7 -IDS (A) 6 5 4 3 2 1 12 10 -ID (A) VG = -1.5V VG = -2V VG = -2.5V VG = -3V VG = -3.5V VG = -4V VG = -4.5V VG = -5V VG = -6V VG = -7V VG = -8V VG = -9V VG = -10V 8 0.5 1 1.5 6 4 125C 25C -50C 2 0 0 8 0 2 0 1 2 -VDS (V) On-Resistance vs. Drain Current 4 5 On-Resistance vs. Gate-Source Voltage 0.1 0.1 VG = -2.5V VG = -4.5V 0.08 RDS(ON) () 0.08 RDS(ON) () 3 -VGS (V) 0.06 0.04 0.02 0.06 0.04 0.02 0 0 0 2 4 6 8 0 2 4 -ID (A) 6 8 10 -VGS (V) On-Resistance vs. Junction Temperature Threshold Voltage vs. Junction Temperature (VGS = -4.5V; ID = -5.9A) 0.5 0.4 1.60 VGS(th) Variance (V) Normalized RDS(ON) (m) 1.80 1.40 1.20 1.00 0.80 0.60 -50 0.3 0.2 0.1 0 -0.1 -0.2 -25 0 25 50 75 100 125 150 -0.3 -50 TJ (C) 4681.2010.06.1.1 -25 0 25 50 75 100 125 150 TJ (C) www.analogictech.com 7 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications AAT4681-2 Typical Electrical Characteristics Gate Charge Source-Drain Diode Forward Voltage 100 10 10 6 IS (A) -VGS (V) 8 4 1 2 TJ = 150C TJ = 25C 0 0.1 0 2 4 6 8 10 12 14 16 18 20 22 24 26 0 -QG, Charge (nC) 8 0.2 0.4 0.6 0.8 1.0 1.2 VSD (V) www.analogictech.com 4681.2010.06.1.1 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications Functional Block Diagram D S SWB STAT SW GC GQ S Comp SW SWB EN S UVLO GND GC (Gate Control from Stand-Alone Charger) GQ (Gate Control from PMU USB Charger) P-Ch Gate Voltage Control Source Vin Linear 0V* 0V float Vin 0V Linear 0V float GC GC GQ GC GC Switch to GQ when GQ > GC even if QC is not equal to zero. * 4681.2010.06.1.1 www.analogictech.com 9 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications Figure 1: AAT4681IDE Evaluation Board Top Side Layout. Figure 2: AAT4681IDE Evaluation Board Bottom Side Layout U1 AAT4681IDE SOURCE 1 2 3 GQ 4 S D S D S D GQ GND DRAIN 10 9 VIO 8 GND 7 R1 GC Stat 5 GC STAT 6 TDFN33-10L Figure 3: AAT4681IDE Evaluation Board Schematic. 10 www.analogictech.com 4681.2010.06.1.1 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications Ordering Information Package Marking1 Continuous Drain Current (A) Part Number (Tape and Reel)2 TDFN33-10L TDFN33-10L TDFN33-10L J8XYY F5XYY ABXYY 7.03 5.03 3.24 AAT4681IDE-T1 AAT4681IDE-1-T1 AAT4681IDE-2-T1 All AnalogicTech products are offered in Pb-free packaging. The term "Pb-free" means semiconductor products that are in compliance with current RoHS standards, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. For more information, please visit our website at http://www.analogictech.com/aboutus/quality.php. Package Information TDFN33-10L5 Pin 1 dot by marking 0.500 BSC 1.70 0.05 3.00 0.05 0.23 0.05 Pin 1 identification R0.200 0.40 0.05 3.00 0.05 2.40 0.05 Top View 0.05 0.05 0.203 REF 0.75 0.05 Bottom View Side View All dimensions in millimeters. 1. 2. 3. 4. 5. XYY = assembly and date code. Sample stock is generally held on part numbers listed in BOLD. TA = 85C. TA = 70C. The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing process. A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection. 4681.2010.06.1.1 www.analogictech.com 11 PRODUCT DATASHEET AAT4681 SmartSwitchTM 20m P-Ch SmartSwitch for UMPC Battery Charging Applications Revision History Date 5/20/2010 Revision 4681.2010.05.1.1 Edits 1. edits to Description p.1. 2. edits to Features p.1. 3. edits to Typical Application drawing labels and MOSFET orientation p.1. Advanced Analogic Technologies, Inc. 3230 Scott Boulevard, Santa Clara, CA 95054 Phone (408) 737-4600 Fax (408) 737-4611 (c) Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. Except as provided in AnalogicTech's terms and conditions of sale, AnalogicTech assumes no liability whatsoever, and AnalogicTech disclaims any express or implied warranty relating to the sale and/or use of AnalogicTech products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed. AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. 12 www.analogictech.com 4681.2010.06.1.1