bq24392 www.ti.com SLIS146A – JUNE 2012 – REVISED JUNE 2012 Charger Detection Device with High Speed USB Switch Battery Charger Specification v1.2 Check for Samples: bq24392 FEATURES • 1 • 23 • • • Charger Detection Device – USB BCv1.2 Compliant – VBUS Detection – Data Contact Detection – Primary & Secondary Detection – Dead Battery Provision (DBP) 32-min Timer Switch – USB 2.0 High Speed Switch Compatible Accessories – Dedicated Charging Port – Standard Charging Port – Charging Port Other Chargers Detected – Apple™ Charger – TomTom™ Charger – Non Compliant USB Charger • • VBUS Voltage Range – –2V to 28V Tolerance on VBUS ESD Performance Tested per JESD 22 – 4000-V Human-Body Model (A114-B, Class II) – 1500-V Charged-Device Model (C101) ESD Performance DP_CON/DM_CON to GND – ±8kV Contact Discharge (IEC 61000-4-2) APPLICATIONS • • • • Cell Phones Smart-Phones Tablets Camera & GPS Systems TYPICAL APPLICATION DIAGRAM DM_HOST USB HOST DP_HOST VBUS DM_CON 3.3V 3.3V USB PORT DP_CON R1 10KΩ GND BQ24392 SW_OPEN R1 10KΩ 3.3V CHG_AL_N R2 100KΩ GOOD_BAT (Battery Status) CHG_DET SYSTEM & CHARGER Diode 0.5V ORDERING INFORMATION (1) TA –40°C to 85°C (1) (2) PACKAGE (2) µQFN 0.5-mm pitch – RSE Tape and Reel ORDERABLE PART NUMBER TOP-SIDE MARKING BQ24392RSER APH For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. 1 2 3 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Apple is a trademark of Apple. TomTom is a trademark of TomTom International. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2012, Texas Instruments Incorporated bq24392 SLIS146A – JUNE 2012 – REVISED JUNE 2012 www.ti.com DESCRIPTION The bq24392 is a charger detection device with an integrated isolation switch for use with a micro/mini USB port. The device is compliant with USB Battery Charging specification v1.2. This device allows cell phones and tablets to be charged from different adapters including USB BCv1.2 compliant and non-standard USB chargers. These non-standard chargers include Apple, TomTom, and non-compliant USB chargers. The bq24392 conforms to Dead Battery Provision (DBP) specified in BCv1.2. This includes a 32-min timer that cannot exceed 45 mins. The bq24392 has a USB 2.0 switch that supports high speed. In addition to a USB connector and host pins, bq24392 has one input and three output pins. This results in a minimum software workload for the system to interact with the device. VBUS has 28V tolerance to avoid external protection. Power for this device is supplied through VBUS when accessory is attached. BLOCK DIAGRAM BQ24392 Supply Detect VBUS DM_CON USB HOST DM_HOST DP_HOST DP_CON Switch Matrix Micro USB ID_CON GND BQ24392 - Charger detection device - USB2.0 High Speed Switch SYSTEM & CHARGER SW_OPEN CHG_AL_N CHG_DET 2 Micro-USB Port GOOD_BAT Submit Documentation Feedback Logic DP/DM Comparator - ID_CON: No connect BQ24392 Logic - Controls the state of SW_OPEN, CHG_AL_N & CHG_DET - The state of the three output pins will follow the detection table included in the specification. Copyright © 2012, Texas Instruments Incorporated bq24392 www.ti.com SLIS146A – JUNE 2012 – REVISED JUNE 2012 PINOUT DIAGRAM (TOP VIEW) CHG_DET 10 9 VBUS SW_OPEN 1 DM_HOST 2 8 DP_HOST 3 7 DP_CON CHG_AL_N 4 5 6 DM_CON GND GOOD_BAT PIN DESCRIPTION PIN NO. I/O DESCRIPTION NAME 1 SW_OPEN O Open-drain output. 10kΩ external pull-up resistor. This pin indicates the status of the USB switch. SW_OPEN = LOW then switch is connected SW_OPEN = HIGH-Z then switch is not connected 2 DM_HOST I/O D– signal to transceiver 3 DP_HOST I/O D+ signal to transceiver O Open-drain output add 10kΩ external pull-up resistor. This pin indicates when charging is allowed. CHG_AL_N = LOW then charging allowed CHG_AL_N = HIGH-Z then no charging I Input from the system This pin indicates the status of the battery GOOD_BAT = LOW indicates a dead battery GOOD_BAT = HIGH indicates a good battery 4 CHG_AL_N 5 GOOD_BAT 6 GND 7 DP_CON I/O D+ signal from USB connector 8 DM_CON I/O D– signal from USB connector 9 VBUS I Supply pin from USB connector O Push-pull output to the system This pin indicates if a charger is detected by the device CHG_DET = LOW indicates a charger is not detected CHG_DET = HIGH indicates a charger detected 10 CHG_DET USB DM connected to USB receptacle Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 3 bq24392 SLIS146A – JUNE 2012 – REVISED JUNE 2012 www.ti.com SUMMARY OF TYPICAL CHARACTERISTICS TA = 25°C USB Path (DP_CON and DM_CON) 8Ω ON-state resistance (ron) ON-state resistance match (Δron) 0.5 Ω ON-state resistance flatness (ron(flat)) 0.5 Ω Bandwidth (BW) 920 MHz OFF isolation (OISO) –26 dB at 250 MHz Crosstalk (XTALK) –32 dB at 250 MHz Leakage current (IIO(ON)) 50 nA ABSOLUTE MAXIMUM RATINGS over –40℃ to 85℃ temperature range (unless otherwise noted) Pin voltage range ESD ABSOLUTE MAX UNIT VBUS –2 to 28 V CHG_AL_N –2 to 28 V All Others –0.3 to 7 V HBM 4000 V CDM 1500 V IEC Contact Discharge ( DP_CON, DM_CON to GND) 8000 V RECOMMENDED OPERATING CONDITIONS VBUS MIN MAX UNIT 4.75 5.25 V THERMAL IMPEDANCE RATINGS θJA RSE PACKAGE UNIT 184 °C/W Package thermal impedance GENERAL ELECTRICAL SPECIFICATION over –40℃ to 85℃ temperature range (unless otherwise noted) PARAMETER VBUS_VALID VBUS Valid threshold TEST CONDITIONS MIN Rising VBUS threshold VOH CHG_DET IOH = –2 mA VOL CHG_DET, SW_OPEN, CHG_AL_N IOL = 2 mA VIH TYP MAX 3.5 3.5 V (1) V 0.4 V VBUS 1.1 VIL UNIT V GOOD_BAT 0.5 V RPD Internal pull-down resistor 950 kΩ IQ-SWON VBUS = 5V; USB Switch ON; GOOD_BAT VIH Min = 1.1 V 250 µA VBUS = 5 V; USB Switch ON; GOOD_BAT VIH Min = 2.5 V 80 µA VBUS = 5 V; USB Switch OFF 45 µA IQ-SWON Current consumption IQ-SWOFF tDBP (1) 4 Dead battery provision timer 32 45 Mins CHG_DET Max value will be clamped at 7V when VBUS > 7V. Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated bq24392 www.ti.com SLIS146A – JUNE 2012 – REVISED JUNE 2012 USB SWITCHING ELECTRICAL CHARACTERISTICS VBUS = 4.5V to 5.5 V, TA = –40°C to 85°C (unless otherwise noted) (1) PARAMETER VUSBIO TEST CONDITIONS MIN Analog signal range TYP 0 rON ON-state resistance DM_CON, DP_CON, DM_HOST, DP_HOST ΔrON ON-state resistance match between channels DM_CON, DP_CON, DM_HOST, DP_HOST rON(flat) ON-state resistance flatness DM_CON, DP_CON, DM_HOST, DP_HOST IIO(OFF) IIO(ON) MAX 3.6 UNIT V 8 Ω VI = 0.4 V, O = –2 mA 0.5 Ω VI = 0 V to 3.6 V, IO = –2 mA 1.1 Ω VI or VO OFF leakage current VI = 0.3 V, VO = 2.7 V or VI = 2.7 V, VO = 0.3 V, Switch OFF 45 nA VO ON leakage current VI = OPEN, VO = 0.3 V or 2.7 V, Switch ON 50 nA CI(OFF) VI OFF capacitance DC bias = 0 V or 3.6 V, f = 10 MHz, Switch OFF 2 pF CO(OFF) VO OFF capacitance DC bias = 0 V or 3.6 V, f = 10 MHz, Switch OFF 10 pF CI(ON), CO(ON) VI, VO ON capacitance DC bias = 0 V or 3.6 V, f = 10 MHz, Switch ON 11 pF BW Bandwidth RL = 50 Ω, Switch ON 920 MHz OISO OFF Isolation f = 240 MHz, RL = 50 Ω, Switch OFF –26 dB XTALK Crosstalk f = 240 MHz, RL = 50 Ω –30.5 dB VI = 0 V to 3.6 V, IO = –2 mA DYNAMIC (1) VO is equal to the asserted voltage on DP_CON, DM_CON pins. VI is equal to the asserted voltage on DP_HOST and DM_HOST pins. IO is equal to the current on the DP_CON, DM_CON. II is equal to the current on the DP_HOST and DM_HOST pins. Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 5 bq24392 SLIS146A – JUNE 2012 – REVISED JUNE 2012 www.ti.com GENERAL OPERATION The bq24392 is designed to interface a micro/mini USB connector to external peripherals. The device will automatically detect different types of chargers through the mini/micro USB pin connector. The bq24392 has a high speed USB 2.0 switch that can be automatically opened and closed based on the accessory detected. DETECTION SEQUENCE After accessory insertion, once VBUS voltage is greater than VBUS_VALID threshold, the device proceeds onto data contact detection. This state has a 600ms timeout feature specified in BCDv1.2. Depending on the result, the next step is primary detection or non-compatible USB charger detection. In the case of former, the next step is detecting a Standard Downstream Port (SDP), Dedicated Charging Port (DCP), or Charging Downstream Port (CDP). In the case of latter, the next step is detecting an Apple, TomTom, or Non-compliant Charger. The USB 2.0 switches are automatically closed to enable data transfer if either SDP or CDP is detected and the GOOD_BAT input is HIGH. Once a charger has been detected, and if the GOOD_BAT input is LOW, a Dead Battery timer is initiated. If the GOOD_BAT continues to be LOW for 30 minutes (maximum of 45 minutes), charging is disabled. Toggling GOOD_BAT HIGH after DBP timer expires will re-start detection. The following flow-chart shows the detection sequence used in the bq24392. 6 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated bq24392 www.ti.com SLIS146A – JUNE 2012 – REVISED JUNE 2012 Flow Chart of Detection Sequence POWERUP VBUS > VBUS_UV IDLE GOOD_BAT = 1 VBUS > VBUS_VALID DATA CONTACT DETECTION 600 ms Timeout Feature USB COMPLIANT USB NON COMPLIANT CHECK VOLTAGE LEVEL ON DP_CON & DM_CON PRIMARY DETECTION SDP CHARGER Standard Downstream Port GOOD_BAT=1 SECONDARY DETECTION TomTom Charger No Charger GOOD_BAT=0 Dedicated Charging Port USB SWITCH ON Apple Charger Charging Downstream Port USB SWITCH OFF GOOD_BAT=1 USB SWITCH ON GOOD_BAT=0 USB SWITCH OFF GOOD_BAT=0 Start DBP Timer 32 Mins Expire Disable Charging Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 7 bq24392 SLIS146A – JUNE 2012 – REVISED JUNE 2012 www.ti.com Detection Table The table below lists the configurations of the DP_CON (D+) and DM_CON (D–) that are internal to the various device types. Device Type VBUS DP_CON (D+) DM_CON (D–) Standard Downstream Port >3.5V Pull-down R to GND Pull-down R to GND Charging Downstream Port >3.5V Pull-down R to GND VDM_SRC Dedicated Charging Port Apple Charger >3.5V >3.5V Short to D– 2.0 < VDP < 2.8 Short to D+ 2.0 < VDM < 2.8 GOOD_BAT (Input) CHG_AL_N (Output) CHG_DET (Output) SW_OPEN (Output) HIGH LOW LOW LOW Connected LOW LOW LOW Hi-Z Not Connected HIGH LOW HIGH LOW Connected Switch Status LOW LOW HIGH Hi-Z Not Connected HIGH LOW HIGH Hi-Z Not Connected LOW LOW HIGH Hi-Z Not Connected HIGH LOW HIGH Hi-Z Not Connected LOW LOW HIGH Hi-Z Not Connected HIGH LOW HIGH Hi-Z Not Connected LOW LOW HIGH Hi-Z Not Connected TomTom Charger >3.5V 2.0 < VDP < 3.1 2.0 < VDM < 3.1 PS/2 Charger >3.5V Pull-up R to VBUS Pull-up R to VBUS X LOW LOW Hi-Z Not Connected Noncompliant USB Charger >3.5V Open Open X LOW LOW Hi-Z Not Connected Any Device <3.5V Open Open X Hi-Z LOW Hi-Z Not Connected Any Device DBP Timer Expired >3.5V X X LOW Hi-Z LOW Hi-Z Not Connected 8 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated bq24392 www.ti.com SLIS146A – JUNE 2012 – REVISED JUNE 2012 USB 2.0 EYE DIAGRAM Figure 1. 480-Mbps USB 2.0 Eye Diagram with No Device Figure 2. 480-Mbps USB 2.0 Eye Diagram with USB Switch Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 9 bq24392 SLIS146A – JUNE 2012 – REVISED JUNE 2012 www.ti.com REFERENCE SCHEMATIC 2.2Ω VBUS 1pF~ 10pF ESD DM_HOST USB HO ST DP_HOST 0.1µF 1µF~ 10µF 2.2Ω DM _CON 1pF ESD USB PORT 3.3V 2.2Ω DP _CON 3.3V R1 10 kΩ 1pF ESD BQ24392 SW_OPEN GND R1 10 kΩ 3.3V CHG_AL_N R2 100 kΩ GOOD_BAT (Battery Status) CHG _DET SYSTEM & CHARGER Diode 0.5V Table 1. Critical Components PIN NAME NUMBER CRITICAL COMPONENT 1µF~10µF 2.2Ω VBUS 9 SW_OPEN 1 10kΩ CHG_AL_N 4 10kΩ DM_CON 14 DP_CON 15 ESD Protection Diode 0.1µF 10 Submit Documentation Feedback 2.2Ω ESD Protection Diode 2.2Ω ESD Protection Diode Copyright © 2012, Texas Instruments Incorporated bq24392 www.ti.com SLIS146A – JUNE 2012 – REVISED JUNE 2012 Schematic Guidelines 1. VBUS requires 1µF~10µF and 0.1µF decoupling capacitors to reduce noise from circuit elements. The capacitors act as a shunt to block off the noise. The 0.1µF capacitor smooths out high frequencies and has a lower series inductance. The 1µF~10µF capacitor smooths out the lower frequencies and has a much higher series inductance. Using both capacitors will provide better load regulation across the frequency spectrum. 2. SW_OPEN and CHG_AL_N are open-drain outputs that require a 10kΩ pull-up resistor to VDDIO. 3. VBUS, DM_CON, and DP_CON are recommended to have an external resistor of 2.2Ω to provide extra ballasting to protect the chip and internal circuitry. 4. DM_CON and DP_CON are recommended to have a 1pF external ESD Protection Diode rated for 8kV IEC protection to prevent failure in case of an 8kV IEC contact discharge. 5. VBUS_IN is recommended to have a 1pF ~ 10pF external ESD Protection Diode rated for 8kV IEC protection to prevent failure in case of an 8kV IEC contact discharge. 6. CHG_DET is a push-pull output pin. An external pull-up and Diode are shown to depict a typical 3.3V system. The pull-up resistor and diode are optional. The pull-up range on the CHG_DET pin is from 3.5V to VBUS. When VBUS > 7V, CHG_DET will be clamped to 7V. Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 11 PACKAGE OPTION ADDENDUM www.ti.com 27-Jun-2012 PACKAGING INFORMATION Orderable Device BQ24392RSER Status (1) ACTIVE Package Type Package Drawing UQFN RSE Pins Package Qty 10 3000 Eco Plan (2) Green (RoHS & no Sb/Br) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) CU NIPDAU Level-1-260C-UNLIM (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. 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Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 28-Jun-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device BQ24392RSER Package Package Pins Type Drawing UQFN RSE 10 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 3000 180.0 8.4 Pack Materials-Page 1 1.68 B0 (mm) K0 (mm) P1 (mm) 2.13 0.76 4.0 W Pin1 (mm) Quadrant 8.0 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 28-Jun-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ24392RSER UQFN RSE 10 3000 202.0 201.0 28.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. 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