ABRIDGED DATA SHEET EVALUATION KIT AVAILABLE MAX14656 USB Charger Detection with Integrated Overvoltage Protector General Description Benefits and Features The device implements USB Battery Charging Specification Revision 1.2-compliant detection logic. The device also includes Apple® charger detection that allows identification of resistor divider networks on D+/D-. ● Delivers USB Compliance and Flexibility • Compliant to USB Battery Charging Specification • Revision 1.2 • Data Contact Detection for Foolproof Connector Insertion Detection • Dedicated Charger Detection • Standard Downstream Port Detection • Charging Downstream Port Detection • Apple Charger Detection • Sony® Charger Detection* The MAX14656 is a USB charger detector compliant with USB Battery Charging Specification Revision 1.2. The USB charger detection circuitry detects USB standard downstream ports (SDPs), USB charging downstream ports (CDPs), or dedicated charger ports (DCPs), and controls an external lithium-ion (Li+) battery charger. The internal double-pole double-throw (DPDT) USB switch is compliant to Hi-Speed USB, full-speed USB, low-speed USB, and UART signals. The device’s internal switch features low on-resistance, low on-resistance flatness, and very low capacitance. The ID pin controls the DPDT switch position. The MAX14656 features high-ESD protection up to ±15kV Human Body Model (HBM)on CD+, CD-, and ID pins. The MAX14656 is available in a 16-bump, 0.4mm pitch, 1.8mm x 1.9mm WLP package and operates over the -40ºC to +85ºC extended temperature range. Applications ● ● ● ● DSCs and Camcorders Tablet PCs Smartphones e-Readers ● Consumes Less Power • Low Battery Standby Current 5µA (typ) ● Facilitates System Design • Integrated Precision 1.5A Overvoltage Protection (OVP) • Negative Audio Capable DPDT Hi-Speed USB Switches • Automatic Switch and Charger Interface Control • Full Control by I2C Interface • Interrupt for Device Status Change ● Saves Board Space • VBUS Connection Capable of 36V • ±15kV HBM ESD Protection • 1.8mm x 1.9mm WLP Package Ordering Information and Typical Operating Circuit appears at end of data sheet. *Contact factory for the list of compatible chargers. Apple is a registered trademark of Apple, Inc. Sony is a registered trademark and registered service mark of Kabushiki Kaisha TA Sony Corporation. 19-6569; Rev 0; 12/12 ABRIDGED DATA SHEET MAX14656 USB Charger Detection with Integrated Overvoltage Protector Bump Configuration TOP VIEW (BUMPS ON BOTTOM) MAX14656 1 2 3 4 A VB OUT IDBF INT B CD- CE SDA SCL C CD+ GND BAT UT D ID TD- TD+ UR + WLP (1.8mm × 1.9mm) Bump Description BUMP NAME FUNCTION A1 VB A2 OUT Overvoltage-Protected USB Transceiver VBUS Power Output. Bypass OUT with a 1µF capacitor to GND. A3 IDBF Push-Pull Digital ID Buffer Output USB Connector VBUS Connection. Bypass VB with a 1µF capacitor to GND. A4 INT Active-Low, Open-Drain, Interrupt Request Fault Output. Connect INT to an external pullup resistor. B1 CD- USB Connector D- Connection B2 CE B3 SDA I2C Serial-Data Input/Output. Connect SDA to an external pullup resistor. B4 SCL I2C Serial-Clock Input. Connect SCL to an external pullup resistor. Active-Low, Open-Drain, Charger Control Enable Output. Connect CE to an external pullup resistor. C1 CD+ USB Connector D+ Connection C2 GND Ground C3 BAT Battery Connection Input. Bypass BAT with a 1µF capacitor to GND. C4 UT UART Tx Line from Device D1 ID USB Connector ID Connection. Bypass ID with a 1nF (max) capacitor to GND. D2 TD- USB Transceiver D- Connection D3 TD+ USB Transceiver D+ Connection D4 UR UART Rx Line from Device www.maximintegrated.com Maxim Integrated │ 9 ABRIDGED DATA SHEET MAX14656 Figure 11 HIGHVOLTAGE DC SOURCE USB Charger Detection with Integrated Overvoltage Protector RC 1MΩ RD 1.5kΩ CHARGE-CURRENTLIMIT RESISTOR DISCHARGE RESISTANCE CS 100pF STORAGE CAPACITOR Figure 12 IPEAK (AMPS) DEVICE UNDER TEST PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) Ir 100% 90% 36.8% 10% 0 0 TIME tRL tDL Figure 11. Human Body ESD Test Model Figure 12. Human Body Current Waveform ESD Test Conditions Ordering Information ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results. Human Body Model Figure 11 shows the Human Body Model, and Figure 12 shows the current waveform it generates when discharged into a low-impedance state. This model consists of a 100pF capacitor charged to the ESD voltage of interest that is then discharged into the device through a 1.5kI resistor. www.maximintegrated.com PART MAX14656EWE+T TEMP RANGE PINPACKAGE TOP MARK -40°C to +85°C 16 WLP AAG +Denotes a lead(Pb)-free/RoHS-compliant package. 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. 16 WLP W161C1+1 21-0491 Refer to Application Note 1891 Maxim Integrated │ 24