FSA832 ONSEMI | Alldatasheet

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© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA832 • Rev. 1.0.1 FSA832 — USB2.0 High-Speed (480 Mbps) Charger Detector with Isolation Switch FSA832 — USB 2.0 High-Speed (480 Mbps) Charger Detection IC with Isolation Switch

Features

USB Battery Charging Rev. 1.2 Supports Data Contact Detect (DCD) Dead Battery Provision (DBP) with 30-Minute Timer Proprietary Charger and Other Detection 2.7 V / 2.0 V on DP/DM DP/DM Floating PS/2 Port Detection Switch Type Isolation Switch Closes for Charging Downstream Port (CDP) Standard Downstream Port (SDP) VBUS 28 V Over-Voltage Tolerance -2 V Under-Voltage Tolerance Package 10-Lead MicroPak™ 1.6 x 2.1 mm, 0.5 mm Pitch Ordering Information FSA832L10X

Applications

 MP3, Mobile Internet Device (MID), Cell Phone, PDA, Digital Camera, Notebook, and Netbook

Description

The FSA832 is a charger detection IC with an integrated isolation switch for use with micro/mini USB port. The FSA832 detects USB battery chargers and is compliant with USB Battery Charging Specification, Rev 1.2 (BC1.2). The FSA832 also detects propri etary chargers that pull the USB data lines HIGH (2.7 V / 2.0 V), floating data lines, and PS/2 ports. The device determines if a charger, either through a Dedicated Charging Port (DCP) or Charging Downstream Port (CDP), is connected or if a typical PC host, a Standard Downstream Port (S DP), is connected. The FSA832 conforms to all the constraints for the Dead Battery Provision (DBP) within the BC1. 2 specification, including a 30-minute timer that cannot exceed 45 minutes per BC1.2. Typical Application Figure 1. Mobile Phone Example

© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA832 • Rev. 1.0.1 2 FSA832 — USB2.0 High-Speed (480 Mbps) Charger Detector with Isolation Switch

Ordering Information

Temperature Range Top Mark Package Description Packing Method FSA832L10X -40 to 85°C ZY 10-Lead, MicroPak™ 1.6 x 2.1 mm, 0.5 mm Pitch Tape & Reel Pin Configurations Figure 2. Pin Assignments (Top View) DP_HOST 3 D+ signal connected to the resident USB transceiver on the phone. DM_HOST 2 D- signal connected to the resident USB transceiver on the phone. VBUS 9 Input voltage supply pin to be connected to the VBUS pin of the USB connector. (LOW=charger not detected; HIGH=proprietary charger, DCP, or CDP charger detected). Hi-Z=VBUS is not at a valid voltage).

  1. Output voltage c onditions are LOW = VOL and HIGH = VOH.

Table 1. Functionality

  1. Hi-Z is the internal state of DM_CON . Since a DCP has been detected, DM_CON is shorted to DP_CON externally and

DM_CON is shorted to VDP_SRC. VDP_SRC is not put on DP_CON for proprietary chargers.

  1. DP_CON and DM_CON are pulled to V BUS through a resistor by the PS/2 port when it is connected to the FSA832.

pull-up IDP_SRC (IDP_SRC) current source. System on Chip (SoC) after the switch is closed. provided the portable device does not have a dead battery. does not force the DP_CON pin to VDP_SRC.

© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA832 • Rev. 1.0.1 4 FSA832 — USB2.0 High-Speed (480 Mbps) Charger Detector with Isolation Switch (PCB) capacitance to discharge, and re-apply V BUS. Table 1 provides the functionality of the pins when the timer expires. When GOOD_BAT is HIGH and the battery is removed from the portable device while V BUS is valid, bringing GOOD_BAT LOW; the FSA832 opens the is olation switches on DP_CON and DM_CON and forces the DP_CON pin to VDP_SRC. In this scenario, the timer generally expires because the SoC does not have a supply to bring GOOD_BAT HIGH unless the battery that was removed is re-inserted within 30 minutes after the USB plug is inserted. If an SDP or CDP is inserted with GOOD_BAT HIGH during the 30-minute timer; then GOOD_BAT changes to LOW, SW_OPEN changes to Hi-Z, and the counter continues counting until the 30 minutes expires. If GOOD_BAT then returns to HIGH, SW_OPEN changes to LOW and finishes out the 30-minute time. GOOD_BAT has an internal pull-down resistor to ensure it is LOW when the SoC is powered down. This input is designed to have very V IH interface with low-voltage SoCs driven with 1.2 V supplies. GOOD_BAT can be connected to the processor supply voltage becauses the processor should wake up whenever VBUS is turned on. Proprietary Chargers Chargers pulling the USB data line DM_CON HIGH to 2.0 V or 2.7 V and data line DP_CON HIGH to 2.0 V or 2.7 V are detected by the FSA832 and reported proprietary chargers with a higher charge current allowed. Other chargers that float the DP/DM lines are also detected as a proprietary by means of float detection. This allows a proprietary charger with floating DP/DM to benefit from higher charge current. PS/2 Port Mice and keyboards utilizing the PS/2 port interface pull the clock and data pins of the PS/2 connector HIGH to VBUS through a resistive pull-up. When the PS/2 device is adapted to a USB interface, the clock and data pins are translated to the DP_CON and DM_CON lines of the USB connector, respectively. The benefit of detecting the PS/2 port as a separate device is the ability to limit the current that can be drawn from the bus, thus protecting the PS/2 port. Once the PS/2 port is detected, the DP_HOST and DM_HOST switches remain open to protect the USB PHY connected to DP_HOST and DM_HOST from voltages as high as VBUS. Ground Drops When a DCP is detected, V DP_SRC is forced on DP_CON provided GOOD_BAT is HIGH or GOOD_BAT is LOW and the DBP timer has not expired. When ~1.5 A is flowing into VBUS and GND lines of the USB cable, the current can create substantial ground drops that li ft the ground of the portable device. This drop adds to the voltage at the DP_CON pin as seen from the DCP D+ pin. For the maximum ground drop of 375 mV specified in the BC1.2 specification and for the maximum VDP_SRC of 0.7 V; the voltage as seen by the DCP would be 1.075 V. Smart DCPs that rely on this voltage detection to determine attach and detach detection need to take this into account. VBUS Tolerance When VBUS rises, an internal Power-On Reset (POR) detects this voltage and prepares the FSA832 for charger detection. VBUS voltages up to 28 V can be tolerated by the V BUS pin. VBUS can tolerate voltages up to -2 V for cases where a charger is plugged in backwards.

© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA832 • Rev. 1.0.1 5 FSA832 — USB2.0 High-Speed (480 Mbps) Charger Detector with Isolation Switch Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage t he device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operati ng conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Min. Max. Unit VBUS Voltage from USB Connector -2 28 V VSW USB Switch I/O Voltage (DP_CON, DM_C ON, DP_HOST, DM_HOST) -0.5 6.0 V ISW USB Switch Current (DP_CON to DP_HOS T, DM_CON to DM_HOST) -30 +30 mA VI/O Voltage from GOOD_BAT, CHG_AL_N, CHG _DET and SW_OPEN I/Os -0.5 6.0 V VCA Voltage from CHG_AL_N Output -0.5 28.0 V II/O CHG_AL_N, CHG_DET and SW_OPEN Outputs Sink/Source Current -5 +5 mA TSTG Storage Temperature Range -65 +150 °C TJ Maximum Junction Temperature +150 °C TL Lead Temperature (Soldering, 10 Seconds) +260 °C ESD IEC 61000-4-2 System USB Pins (DP_CON, DM_CON, V BUS) Air Gap 15 kV Contact 8 Human Body Model, JEDEC JESD22-A114 All Pins 6 Charged Device Model, JEDEC JESD22-C101 All Pins 1 Recommended Operating Conditions The Recommended Operating Conditions table defines the conditi ons for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specif ications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Min. Max. Unit VBUS V BUS Input HIGH Voltage 4 6 V VSW Switch I/O Voltage for USB Path 0 3.6 V TA Operating Temperature -40 +85 ºC

© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA832 • Rev. 1.0.1 6 FSA832 — USB2.0 High-Speed (480 Mbps) Charger Detector with Isolation Switch Unless otherwise indicated, VBUS=4 V to 6 V and TA=-40 to +85°C. Typical values are at TA=25°C unless otherwise specified. Symbol Parameter Condition Min. Typ. Max. Unit Status Outputs VOHCD Output HIGH Voltage (CHG_DET) I OH=-2 mA 2.0 V VOL Output LOW Voltage (CHG_DET, CHG_AL_N, SW_OPEN) IOL=2 mA 0.4 V tDIFF Skew Between Any Output (CHG_DET, CHG_AL_N, SW_OPEN) Switching Relative to Other Outputs Switching II/O=±2 mA, CHG_AL_N=20 kΩ to 5 V, SW_OPEN=10 kΩ to 1.8 V 100 ns VBUS Pin VBUSVLD V BUS Valid Detection Threshold(4) 0.8 4.0 V IBUSIN V BUS Input Leakage V BUS=0 V to 0.8 V 3 µA IVBUSACT V BUS Active Mode Average Current USB Path Active, USB Switch Closed After Charger Detection 250 µA tOUT Time from VBUS Valid Asserted to CHG_DET, CHG_AL_N and SW_OPEN Outputs Valid for BC1.2 Standard Accessory Detection (SDP, DCP, or CDP) DP_CON Pulled Down to GND with 15 kΩ; All Voltages Forced on VBUS, DP_CON, DM_CON, and GND simultaneously 250 ms Switch Characteristics IOFF Power Off Leakage Current USB Path VBUS=0 V, VSW=0 V or

3.6 V, Figure 4 10 µA

RONUSB High-Speed USB Range Switch On Resistance(4) VDP_CON / VDM_CON=0 V, 0.4 V; ION=8 mA; Figure 3; VBUS=4 V to 6 V 4.5 6.0 Ω Control Input VIH Input HIGH Voltage (GOOD_BAT) 1.1 V VIL Input LOW Voltage (GOOD_BAT) 0.5 V RPD Pull-Down Resistance (GOOD_BAT) 1 M Ω IIN Input Leakage Current (GOOD_BAT) V BUS=5 V, GOOD_BAT=0 V to 4.4 V 10 µA IIOFF Off-State Leakage Current (GOOD_BAT) V BUS=0 V, GOOD_BAT=0 V to 4.4 V 10 µA tDBP Dead Battery Provision (DBP) Timer 15 30 45 min tGB Time from GOOD_BAT Asserted to SW_OPEN De-Asserted, Switches Closed and Meet the RONUSB Specification 30 ms tDB Time from GOOD_BAT De-asserted to SW_OPEN Asserted, Switches Opened 65 ms Battery Charger Detection Parameters from BC1.2 Specification VDAT_REF Data Detect Voltage 0.25 0.40 V VDM_SRC D- Source Voltage (5) 0.5 0.7 V VDP_SRC D+ Source Voltage (5) 0.5 0.7 V VLGC Logic Threshold 0.8 2.0 V IDM_SINK D- Sink Current 25 175 µA IDP_SINK D+ Sink Current 25 175 µA IDP_SRC Data Contact Detect Current Source 7 13 µA Continued on the following page…

© 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA832 • Rev. 1.0.1 7 FSA832 — USB2.0 High-Speed (480 Mbps) Charger Detector with Isolation Switch Unless otherwise indicated, VBUS=4 V to 6 V and TA=-40 to +85°C. Typical values are at TA=25°C unless otherwise specified. Symbol Parameter Condition Min. Typ. Max. Unit tDCD_DBNC Data Contact Detect Debounce 10 ms tDCD_TOUT Time for DCD to Timeout 300 450 900 ms tVDPSRC_ON D+ Voltage Source On Time 40 ms tVDMSRC_ON D- Voltage Source On Time 40 ms Notes: 4. Guaranteed by characteriza tion; not production tested. 5. The voltage source, V DP_SRC / VDM_SRC, is able to source at least 250 µA when the output voltage is in the specified range. This voltage source should not pull DP_CON / DM_CON below 2.2 V when DP_CON / DM_CON is pulled to a voltage of 3.0 V minimum or 3.6 V maximum with a resistance of 900 Ω minimum or 1575 Ω maximum. Unless otherwise specified, values are at TA=-40 to +85°C; all typical values are for VCC=3.3 V at TA=25°C. Symbol Parameter Condition Min. Typ. Max. Unit Figure Xtalk Active Channel Crosstalk, DP_COM to DM_CON(6) F=1 MHz, RT=50 Ω , CL=0 pF -78 dB Figure 6 F=240 MHz, RT=50 Ω , CL=0 pF -36 OIRR Off Isolation Rejection Ratio, DM_HOST to DM_CON, DP_HOST to DP_CON(6) f=1 MHz, RT=50 Ω, CL=0 pF -84 dB Figure 5 f=240 MHz, RT=50 Ω, CL=0 pF -34 BW Bandwidth of Switch(6) R T=50 Ω 1.5 GHz Figure 5 Note: 6. Guaranteed by characteriza tion; not production tested. Capacitance Unless otherwise specified, values are at TA=-40 to +85°C. Symbol Parameter Condition Typical Unit Figure COFF DP_CON, DM_CON Off Capacitance (7) V BIAS=0.2 V, f=1 MHz 3.2 pF Figure 7 CON DP_CON, DM_CON On Capacitance (7) V BIAS=0.2 V, f=1 MHz 5.8 pF Figure 8 Note: 7. Guaranteed by characteriza tion; not production tested.

NOTES: A. PACKAGE CONFORMS TO JEDEC REGISTRATION MO-255, VARIATION UABD. B. DIMENSIONS ARE IN MILLIMETERS. C. PRESENCE OF CENTER PAD IS PACKAGE SUPPLIER DEPENDENT. IF PRESENT IT IS NOT INTENDED TO BE SOLDERED AND HAS A BLACK OXIDE FINISH. D. DRAWING FILENAME: MKT-MAC10ArevG. E. DIMENSIONS WITHIN ( ) ARE UNCONTROLLED.

0.10 C A B

0.05 C 1 4 9 6 10 5 0.50 0.56 1.62 1.60±0.10 2.10±0.10 (0.25) 10X0.50 (0.11) 1.12 1.62 0.20±0.05 0.15±0.05 0.30±0.05 0.30±0.05 0.20±0.05 0.60±0.05 C (0.36) 2X (0.31) 0.56 0.50±0.05 0.20±0.05 9X 0.30±0.05 9X (0.20) (0.09) 10X (0.10±0.10) A BPIN#1 IDENT IS 2X LONGER THAN OTHER LINES TOP VIEW 0.025±0.025 C SIDE VIEW BOTTOM VIEW DETAIL A ALL FEATURES DETAIL A SCALE 2:1 RECOMMENDED LAND PATTERN (0.35) 10X KEEPOUT ZONE, NO TRACES OR VIAS ALLOWED

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