FAN3988 USB/Charger and Over-Voltage Detection Device Features Description The FAN3988 is a USB-connection-monitoring device used to determine if a standard USB device or a batterycharging device is connected. Charger/USB Detection Device Charger/USB Device Detection Flag Over-/Under-Voltage Detection Flag The FAN3988 sets the FLAG1 pin to logic HIGH or LOW as an indicator to the system controller that a standard USB device or a charger is connected to the USB port. The FAN3988 also monitors the VBUS for over- or under-voltage conditions. The FLAG2 pin is set LOW if VBUS is less than 3.3 V or greater than 6.0 V. VBUS Supply: 2.7 V to 20 V CON of 1.5 pF 6-Lead MicroPakTM MLP Package Applications The FAN3988 is packaged in a very small 6-lead MicroPakTM MLP package suitable for small board space applications, such as mobile phones. Mobile Phones Handheld Devices Ordering Information Operating Temperature Range Part Number FAN3988IL6X (1) FAN3988IL6X_F113 -40C to +85C Package 6-Lead MicroPakTM MLP Package Packing Method Quantity Reel 5000 Note: 1. Legacy product number; please order FAN3988IL6X for new designs. VBUS DD+ Comparator OVP UVP Logic STD USB / Charger Detect Logic Flag 2 Flag 1 GND Figure 1. (c) 2007 Fairchild Semiconductor Corporation FAN3988 * Rev. 1.15 Block Diagram www.fairchildsemi.com FAN3988 -- USB / Charger and Over-Voltage Detection Device November 2015 FAN3988 -- USB / Charger and Over-Voltage Detection Device Pin Configuration Figure 2. Pin Configuration (Top View) Pin Definitions Pin# Name Type Description 1 Vbus Input Power input from charger, USB device, or handheld battery 2 D- Input USB data input 3 D+ Input USB data input 4 Gnd Input Device ground 5 Flag2 Output Over/under-voltage flag output 6 Flag1 Output Charger/standard USB device detect flag Truth Table Connection State VBUS (V) D- D+ FLAG1 FLAG2 0 Open Open LOW LOW STD USB Device 0 R to GND R to GND LOW LOW STD USB Device 5 R to GND R to GND LOW HIGH USB Charger 5 Short to D+ Short to D- HIGH HIGH VBUS > 6 V >6 Short to D+ Short to D- HIGH LOW VBUS < 3.3 V < 3.3 Short to D+ Short to D- HIGH LOW PC Data/Charger 5 Open Open LOW HIGH STD USB Device (2) Note: 2. See Figure 7. (c) 2007 Fairchild Semiconductor Corporation FAN3988 * Rev. 1.15 www.fairchildsemi.com 2 Stresses exceeding the absolute maximum ratings may damage the 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 operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VBUS Parameter DC Supply Voltage Min. Max. Unit -0.3 20.0 V Typ. Max. Unit +150 C +150 C Reliability Information Symbol TJ Parameter Min. Junction Temperature TSTG Storage Temperature Range JA Thermal Resistance, JEDEC Standard, Multi-layer Test Boards, Still Air -65 41 C/W ESD Information Symbol ESD Parameter Electrostatic Discharge Information Max. Human Body Model, JESD22-A114 5 Charged Device Model, JESD22-C101 2 Unit kV FAN3988 -- USB / Charger and Over-Voltage Detection Device Absolute Maximum Ratings Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol TA VBUS Parameter Min. Operating Temperature Range -40 Supply Voltage Range 2.7 (c) 2007 Fairchild Semiconductor Corporation FAN3988 * Rev. 1.15 Typ. Max. Unit +85 C 5.0 20.0 V www.fairchildsemi.com 3 TA = 25C and VBUS = 5.0 V, unless otherwise noted. Symbol Parameter Condition Min. Typ. Max. Unit 2.7 5.0 20.0 V 2.0 mA Supply VBUS Supply Voltage Range VBUS Range IBUS Quiescent Supply Current VBUS = +5.0 V, D+ D- Shorted 1.2 Power-Up Stabilization Time VBUS = +5.0 V, D+ D- Shorted 10 tSUPPLY ms Input Characteristics CD+ Input Capacitance 1.5 2.0 pF CD- Input Capacitance 1.5 2.0 pF Ioff D+ Off Leakage Current VBUS = 0 V or 5 V VIN on D+ = 5 V 1 A Ioff D- Off Leakage Current VBUS = 0 V or 5 V VIN on D- = 5 V 1 A Output Characteristics OVDETECT Over-Voltage Threshold Detect VBUS = +5.0 V, Flag2 = LOW OVHYST Over-Voltage Hysteresis Voltage Sweep through Upper and Lower Trip Points UVDETECT Under-Voltage Threshold Detect VBUS = +5.0 V, Flag2 = LOW UVHYST Under-Voltage Hysteresis Voltage Sweep through Upper and Lower Trip Points VOH FLAG1/ Minimum HIGH Output FLAG2 Voltage VBUS = +5.0 V, IOH = -20 A VOL FLAG1/ Maximum LOW Output FLAG2 Voltage VBUS = +5.0 V, IOL = 20 A IOH FLAG1/ FLAG2 Minimum HIGH Output Current IOL FLAG1/ FLAG2 Maximum HIGH Output Current D+ = 3V; D- = 0V-3V or 3V-0V D- = 3V; D+ = 0V-3V or 3V-0V USB DCP (Dedicated Charging Port) D+/D- = 0V-3V, 3V-0V toff Flag2 HIGH to LOW ton Flag2 LOW to HIGH (c) 2007 Fairchild Semiconductor Corporation FAN3988 * Rev. 1.15 6.0 6.5 100 3.0 3.3 3.6 100 2.4 1.025 V mV V mV 2.6 V 0.3 V -20 USB SDP (Standard Downstream Port) D+/DThreshold 5.8 FAN3988 -- USB / Charger and Over-Voltage Detection Device DC Electrical Characteristics A 1.300 20 A 1.365 V 1.450 V 100 pF Load 10 ns 100 pF Load 44 ns www.fairchildsemi.com 4 VCC =8.0V- 21V VCC =2.7V-7.0V 1.00 1.8 0.90 1.6 1.4 1.2 0.70 Icc mA mA 0.80 ICC 1 0.60 0.8 0.50 0.6 VCC Figure 3. Figure 5. (c) 2007 Fairchild Semiconductor Corporation FAN3988 * Rev. 1.15 21 20 19 18 17 16 15 14 VCC IBUS vs. vBUS (2.7 V-7.0 V) No Load Figure 6. 13 12 11 9 8 10 0.4 6.90 6.70 6.50 6.30 6.10 5.90 5.70 5.50 5.30 5.10 4.90 4.70 4.50 4.30 4.10 3.90 3.70 3.50 3.30 3.10 2.90 2.70 0.40 Figure 4. IBUS vs. vBUS (8.0V-21 V) No Load FAN3988 -- USB / Charger and Over-Voltage Detection Device Typical Performance Characteristics No Fault on Flag 1, Skew=65 ns PC Data Running D+/D- (Flag 1 and Flag 2 at Correct Levels) www.fairchildsemi.com 5 Std 15K pull-down on Dinput and 1.5K pull-up on D+ by USB transceiver. 1.5K Vdd Control 15K Battery USB Transceiver Rsense Vout Vbus STD USB Device (ie USB Headphones) Vbus DD+ Gnd Comparator OVP UVP Logic Flag 2 USB D- Std USB/ Charger Detect D+ Logic Flag 1 GND Figure 7. Typical Application System with USB Transceiver In a condition where D+ and D- are shorted when a charger is plugged into the USB port, the USB switch is ON and pulled to VDD, which is about 3.3 V, making both D+ and D- HIGH and flag1 set HIGH - indicating that a charging device is connected to the port. With USB Transceiver (Figure 7) The FAN3988 sets the FLAG1 pin to logic HIGH or LOW as an indicator to the system controller that a standard USB device or a charger is connected to the USB port. The FAN3988 also monitors the VBUS for over- or under-voltage conditions. The FLAG2 pin is set LOW if VBUS is less than 3.3 V or greater than 6.0 V. In a condition where D+ and D- are connected to a standard USB device, the D+ is pulled to VDD and D- is set LOW (due to the 15 k pull-down in the USB transceiver) and flag1 is LOW. In a standard USB configuration, there is a switch in the USB transceiver that is always ON in the full-speed mode. It is ON during the transition from full-speed mode to high-speed mode and is turned off after enumeration is complete. (c) 2007 Fairchild Semiconductor Corporation FAN3988 * Rev. 1.15 FAN3988 -- USB / Charger and Over-Voltage Detection Device Application Information If D+ and D- are open (floating), D+ is pulled to VDD and D- floats LOW, which makes flag1 LOW. www.fairchildsemi.com 6 The FAN3988 sets the FLAG1 pin to logic HIGH or LOW as an indicator to the system controller that a standard USB device or a charger is connected to the USB port. The FAN3988 also monitors the VBUS for over- or under-voltage conditions. The FLAG2 pin is set LOW if VBUS is less than 3.3 V or greater than 6.0 V. In a condition where the USB port is connected to a standard USB device, the D+ input is pulled up to VDD (system supply) in parallel with the 1.5 k on a USB transceiver with a parallel R value of 1.497 k. The Dinput is connected to a 15 k pull-down by the USB device and in parallel with 5 M with a parallel R value of 14.955 k. This condition makes flag1 LOW. In a condition where a USB transceiver is not incorporated or there is a switch between the USB port and the FAN3988, external resistors must be used to set the correct input logic states on the D+ D- inputs. A 5 M pull-down on the D- line and a 1 M pull-up to VDD (system supply) on the D+ line are recommended. If D+ and D- are open (floating), D+ is pulled to V DD (system supply) and D- floats LOW, which makes flag1 LOW. Control Battery Rsense FAN3988 -- USB / Charger and Over-Voltage Detection Device When a condition exists where a charger is plugged into the USB port (D+ D- shorted), the voltage divider of 1 M and 5 M puts a voltage of 2.75 V on the D+ Dinputs and flag1 is HIGH, indicating a charger is connected to port. Without USB Transceiver (Figure 8) Vbus Vbus DD+ Gnd Comparator OVP UVP Flag 2 Logic USB DD+ Std USB/ Charger Detect Logic Flag 1 GND 5M 1M Vdd Figure 8. (c) 2007 Fairchild Semiconductor Corporation FAN3988 * Rev. 1.15 Typical System Application without USB Transceiver www.fairchildsemi.com 7 TRADEMARKS The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not intended to be an exhaustive list of all such trademarks. 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