EVALUATION KIT AVAILABLE MAX14634 Ultra-Low On-Resistance and Compact Bidirectional Battery Switch General Description Benefits and Features The MAX14634 bidirectional battery switch features reverse blocking capability to isolate the battery from the system. The internal switch features ultra-low 7mI (typ) on-resistance and operates from a +2.3V to +5.5V input voltage range, making this device ideal as a batterydisconnect switch for high-capacity battery applications. The slew-rate controlled switch is also ideal for a large load capacitor as well as high-current load switching applications. SProvides Efficient System Battery Switch Integrated FET for Bidirectional Blocking Ultra-Low 7mI (typ) RON Wide Input Voltage Range: +2.3V to +5.5V Low Quiescent Current SSaves Space Integrated Pulldown and Logic Buffer Circuits 12-Bump, 1.3mm x 1.7mm, 0.4mm Pitch WLP Package The device is available in an ultra-small 12-bump (1.3mm x 1.7mm, 0.4mm pitch) WLP package. The tiny, lowprofile package is suitable for space-limited portable device applications. The device operates over the -40NC to +85NC extended temperature range. Ordering Information appears at end of data sheet. For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX14634.related. Applications Tablet PC Battery Switches Smartphone Battery Switches Battery Isolators Typical Operating Circuit SYSTEM INPUT POWER PATCH CHARGER CHARGER OUTPUT SWITCHING REGULATOR AND CONTROL SYSTEM CONNECTOR PWRA PWRB BATTERY PACK CONTROL LOGIC EN GND RPD MAX14634 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. 19-6370; Rev 1; 1/13 MAX14634 Ultra-Low On-Resistance and Compact Bidirectional Battery Switch ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) PWRA, PWRB, EN....................................................-0.3V to +6V Current into PWRA, PWRB.................................................... Q7A Continuous Power Dissipation (TA = +70NC) WLP (derate 13.7mW/NC above +70NC)....................1096mW Operating Temperature Range........................... -40NC to +85NC Maximum Junction Temperature......................................+150NC Storage Temperature Range............................. -65NC to +150NC Soldering Temperature (reflow).......................................+260NC Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. PACKAGE THERMAL CHARACTERISTICS (Note 1) WLP Junction-to-Ambient Thermal Resistance (qJA)...........73°C/W Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (VPWRA, VPWRB = 2.3V to 5.5V; TA = -40NC to +85NC, unless otherwise noted. Typical values are at VPWRA, VPWRB = 4.2V; CPWRA, CPWRB = 0.1µF; TA = +25NC.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V 1 FA SUPPLY OPERATION Operating Voltage VPWRA VPWRB Quiescent Current IPWRA IPWRB Transient Supply Current Shutdown Current 2.3 VEN = 0.4V, no load 30 EN from high to low or low to high ISHDN VEN = 5.5V, (VPWRA = 5.5V, VPWRB = open) or (VPWRB = 5.5V, VPWRA = open) FA 1 FA INTERNAL FET On-Resistance Between PWRA and PWRB RON TA = +25NC, ILOAD = 100mA VPWRA, VPWRB = 2.3V 8 13 VPWRA, VPWRB = 3.3V 7 10 mI EN INPUT EN Input Logic-High Voltage VIH EN Input Logic-Low Voltage VIL EN Internal Pulldown Resistor 1.6 V 500 RPD 0.4 V 700 kI DYNAMIC Turn-On Time tON Time from EN high-to-low signal to VPWRB/A = 90% of VPWRA/B 3 ms Turn-Off Time tOFF Time from EN low-to-high signal to VPWRB/A = 10% of VPWRA/B, RLOAD = 100I 3 ms Note 2: All devices are 100% production tested at TA = + 25NC. Specifications over the operating temperature range are guaranteed by design. Maxim Integrated 2 MAX14634 Ultra-Low On-Resistance and Compact Bidirectional Battery Switch Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) 5 4 3 2 7 6 5 4 3 2 1 1 0 0 0 1 2 3 4 5 6 MAX14634 toc03 VEN = 0V 45 40 35 30 25 VPWRA = 5V 20 15 VPWRA = 4.2V 10 VPWRA = 2.7V 5 0 0 1 2 3 4 5 6 -40 -15 10 35 85 60 PWRB VOLTAGE (V) TEMPERATURE (°C) PWRB QUIESCENT SUPPLY CURRENT vs. TEMPERATURE PWRA SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE PWRB SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 35 30 25 VPWRB = 5V 20 15 VPWRB = 4.2V 10 VPWRB = 2.7V 5 VPWRA = 5V, VPWRB = OPEN 4 VPWRA = 4.2V, VPWRB = OPEN 3 VPWRA = 2.7V, VPWRB = OPEN 2 1 0 VPWRA = 5V, VPWRB = 5V -1 VPWRA = 4.2V, VPWRB = 5V -40 -15 10 35 -40 85 60 -15 10 35 VPWRB = 4.2V, VPWRA = OPEN 3 VPWRB = 2.7V, VPWRA = OPEN 2 1 0 VPWRB = 5V, VPWRA = 5V -1 VPWRB = 4.2V, VPWRA = 5V VPWRB = 2.7V, VPWRA = 5V -2 85 60 -40 -15 60 85 1.20 MAX14634 toc08 2.5 35 NORMALIZED ON-RESISTANCE vs. LOAD CURRENT MAX14634 toc07 VPWRB = OPEN 10 TEMPERATURE (ºC) PWRA SHUTDOWN CURRENT vs. EN VOLTAGE 3.0 VEN = 1.8V VPWRB = 5V, VPWRA = OPEN 4 TEMPERATURE (ºC) TEMPERATURE (°C) 1.15 VPWRA = 2.7V NORMALIZED RON PWRA SHUTDOWN CURRENT (µA) 5 VPWRA = 2.7V, VPWRB = 5V -2 0 VEN = 1.8V PWRB SHUTDOWN CURRENT (µA) 40 5 PWRA SHUTDOWN CURRENT (µA) VEN = 0V 45 MAX14634 toc05 PWRA VOLTAGE (V) 50 PWRB QUIESCENT CURRENT (nA) 8 50 MAX14634 toc06 6 VEN = 0V CPWRA = 1µF CPWRB = 1µF 9 PWRA QUIESCENT CURRENT (nA) 7 MAX14634 toc04 PWRA QUIESCENT CURRENT (nA) 8 10 MAX14634 toc02 VEN = 0V CPWRA = 1µF CPWRB = 1µF 9 PWRB QUIESCENT CURRENT (nA) 10 PWRA QUIESCENT SUPPLY CURRENT vs. TEMPERATURE PWRB QUIESCENT SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX14634 toc01 PWRA QUIESCENT SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.0 VPWRA = 5.5V 1.5 1.0 VPWRA = 4.2V VPWRA = 3.3V 0.5 VPWRA = 4.2V 1.05 1.00 VPWRA = 5V 0.95 0 0.90 0 1 2 3 4 EN VOLTAGE (V) Maxim Integrated 1.10 5 6 0 1 2 3 4 5 6 LOAD CURRENT (A) 3 MAX14634 Ultra-Low On-Resistance and Compact Bidirectional Battery Switch Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) NORMALIZED ON-RESISTANCE vs. PWRB VOLTAGE 1.3 1.1 1.0 0.9 0.8 1.2 1.1 1.0 0.9 0.8 0.7 0.7 0.6 0.6 ILOAD = 100mA 0.5 2 3 4 5 6 2 3 4 5 0.9 0.8 0.5 6 -40 -15 10 35 60 85 TEMPERATURE (°C) MAX14634 toc12 5.0 VPWRA = 2.7V VPWRA = 4.2V 4.5 RLOAD = 10I 4.0 3.5 TURN-OFF TIME (ms) TURN-ON TIME (ms) 1.0 SWITCH TURN OFF-TIME vs. TEMPERATURE RLOAD = 10I 4.5 3.0 2.5 2.0 VPWRA = 4.2V 3.5 3.0 2.5 2.0 VPWRA = 2.7V 1.5 1.0 0.5 0.5 0 0 -40 -15 10 35 60 85 -40 TEMPERATURE (°C) MAX14634 toc14 2ms /div -15 10 35 60 85 TEMPERATURE (°C) SWITCH-ON WAVEFORM Maxim Integrated 1.1 VPWRB (V) 5.0 1.0 1.2 0.6 ILOAD = 100mA 0.5 SWITCH TURN ON-TIME vs. TEMPERATURE 1.5 1.3 0.7 VPWRA (V) 4.0 VPWRA = 4.2V ILOAD = 100mA 1.4 MAX14634 toc13 NORMALIZED RON 1.2 1.4 NORMALIZED RON 1.3 1.5 MAX14634 toc10 1.4 NORMALIZED RON 1.5 MAX14634 toc09 1.5 NORMALIZED ON-RESISTANCE vs. TEMPERATURE MAX14634 toc11 NORMALIZED ON-RESISTANCE vs. PWRA VOLTAGE SWITCH-OFF WAVEFORM MAX14634 toc15 RLOAD = 10I RLOAD = 10I VEN 5V/div VEN 5V/div VPWRA 5V/div VPWRA 5V/div VPWRB 5V/div VPWRB 5V/div IPWRA 0.5A /div IPWRA 0.5A /div 2ms /div 4 MAX14634 Ultra-Low On-Resistance and Compact Bidirectional Battery Switch Bump Configuration TOP VIEW (BUMPS ON BOTTOM) 1 MAX14634 2 3 4 + PWRB PWRA PWRB EN PWRB PWRA PWRB PWRA GND PWRA PWRB PWRA A B C 12-WLP Bump Description BUMP NAME A1, A3, B1, B3, C3 PWRB Power I/O A2, B2, B4, C2, C4 PWRA Power I/O A4 C1 Maxim Integrated EN GND FUNCTION Active-Low Enable Input. Drive EN low to turn on the switch. Ground 5 MAX14634 Ultra-Low On-Resistance and Compact Bidirectional Battery Switch Functional Diagram INTERNAL BIAS CIRCUIT PWRB PWRA EN GND RPD MAX14634 Detailed Description The MAX14634 is a bidirectional switch with ultra-low 7mI (typ) on-resistance and reverse-current blocking capability. The device has low quiescent current and operates from a +2.3V to +5.5V input voltage range, making this device ideal as a battery-disconnect switch for highcapacity battery applications. The slew-rate controlled switch is also ideal for a large load capacitor as well as high-current load switching applications. Reverse-Current Blocking The bidirectional FET switch prevents current flowing from either power input to the other when the switch is disabled. EN Input The switch position is controlled by an EN active-low logic input. The switch is on when EN is logic-low and off when EN is logic-high. EN is internally pulled down to ground by RPD. Maxim Integrated Ordering Information PART TEMP RANGE TOP MARK PINPACKAGE MAX14634EWC+T -40NC to +85NC ACO 12 WLP +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel Chip Information PROCESS: BiCMOS Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 12 WLP W121F1+1 21-0449 Refer to Application Note 1891 6 MAX14634 Ultra-Low On-Resistance and Compact Bidirectional Battery Switch Revision History REVISION NUMBER REVISION DATE 0 5/12 Initial release — 1 1/13 Updated Absolute Maximum Ratings section 2 DESCRIPTION PAGES CHANGED Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 2012 Maxim Integrated Products, Inc. 7 Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.