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| AIC1527 Quad USB High-Side Power Switch n FEATURES * 110m (5V Input) High-Side MOSFET Switch. l 500mA Continuous Load Current per Channel. l 220A Typical On-State Supply Current. l 1A Typical Off-State Supply Current. l Current-Limit / Short Circuit Protection. l Thermal Shutdown Protection under Overcurrent Condition. l Undervoltage Lockout Ensures that Switch is off at Start Up. l Output can be Forced Higher than Input (Off-State). l Open-Drain Fault Flag. l Slow Turn ON and Fast Turn OFF. l Enable Active-High or Active-Low. n DESCRIPTION The AIC1527 is a quad high-side power switch for self-powered and bus-powered Universal Serial Bus (USB) applications. One high-side switch is a MOSFET with 110m RDS(ON), which meets USB voltage drop requirements for maximum transmission wire length. n APPLICATIONS * USB Power Management. l l Multi-purpose open-drain fault flag output indicates over-current limiting, thermal shutdown, or undervoltage lockout for each channel. Output current is typically limited to 1A, well below the 5A safety requirement, and the thermal shutdown function independently controls each channel under overcurrent condition. Hot Plug-In Power Supplies. Battery-Charger Circuit. Guaranteed minimum output rise time limits inrush current during hot plug-in, minimizing EMI and preventing the voltage at upstream port from dropping excessively. n TYPICAL APPLICATION CIRCUIT VCC 5.0V Ferrite Bead + 33 F VBUS D+ 0 .01F DGND DATA 10K 10K + 33F * 4.50V to 5.25V Upstream VBUS 100mA max VBUS D+ DGND + 1F CIN 10K 10K AIC1722 17 IN OUT US B Con tr oller + VIN ON/OFF OVERCURRENT OVERCURRENT ON/OFF ON/OFF OVERCURRENT OVERCURRENT ON/OFF GND AIIC 1527 A C 52 OUTA CTLA FLGA IN(A/B) FLGB GND1 CTLB CTLA OUTB FLGA OUTA FLGB IN(A/B) CTLB GND 1 OUTB 0.1F + 33 F VBUS D+ 0.01 F DGND DATA GND 10F COUT * DATA 0.1F VBUS + 33F D+ 0.01 F DGND DATA * * 33 F, 16V Tantalum, or 100 F, 10V Electrolytic Bold line indicate high- current traces + 33F VBUS D+ 0.01F DGND DATA * 4-Port Self-Powered Hub Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC DS-1527-00 May 31, 00 TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1 AIC1527 n ORDERING INFORMATION AIC1527- XXX PACKAGE TYPE N: PLASTIC DIP S: SMALL OUTLINE TEMPERATURE RANGE C:0 C~+70C CONTROL POLARITY 0: ACTIVE LOW 1: ACTIVE HIGH AIC1527-0CS AIC1527-1CS (PLASTIC SO) ORDER NUMBER AIC1527-0CN AIC1527-1CN (PLASTIC DIP) PIN CONFIGURATION TOP VIEW CTLA 1 FLGA 2 FLGB 3 CTLB 4 CTLC 5 FLGC 6 FLGD 7 CTLD 8 16 OUTA 15 IN(A/B) ) 14 GND 13 OUTB 12 OUTC 11 IN(C/D) 10 GND 9 OUTD n ABSOLUTE MAXIMUM RATINGS Supply Voltage (V IN) ............................ ... ... ... ............................... ... ... ... .......... ... ........... 7.0V Fault Flag Voltage (V FLG) ........................................................... ... ... ... .... ... ... ... ... .......... 7.0V Fault Flag Current (IFLG) ...................... ... ... ... ... ... .......................... ... ... ....................... 50mA Control Input (V CTL) ................................ ... ... ... ....................... ... ... ... ... ........... . -0.3V ~15V ........ ... ... ... ... ...... ... ..... ... ... ....... ... ... ................. -20C~80C .......... ... ... ... ... ... ... ............................... ... ... ....... -65C ~ 150C Operating Temperature Range Storage Temperature Range n TEST CIRCUIT 10K +5V ON CTLA OF F FLGA FLGB CTLB CTLC FLGC CTLD FLGD OUTA IN ( A/B ) 0.1 F GND OUTB OUTC IN ( C/D ) GND OUTD 10 AIC1527 (For output reference only) DS-1527-00 May 31, 00 2 AIC1527 n ELECTRICAL CHARACTERISTICS (V specified.) PARAMETERS Supply Current Control Input Voltage IN= 5V, Ta=25C, unless otherwise CONDITIONS VCTL =Logic "0" , OUT=Open VCTL =Logic "1" , OUT=Open VCTL =Logic "0" VCTL =Logic "1" MIN. TYP. 1.50 220 MAX. 10 320 0.8 UNIT A V 2.4 0.01 0.01 1 110 150 1 1 pF m S 2500 20 20 10 0.6 1.0 135 125 10 15 0.01 2.6 2.4 25 40 1 A V 1.25 S S S A A C A Control Input Current VCTL =Logic "0" VCTL =Logic "1" Control Input Capacitance Output MOSFET Resistance Output Turn-On Rise Delay Output Turn-On Rise Time Output Turn-Off Delay Output Turn-Off Fall Time Output Leakage Current Current Limit Threshold Overtemperature Shutdown Threshold Error Flag Output Resistance Error Flag Off Current UVLO Threshold TJ Increasing TJ Decreasing VIN = 5V , IL =10 mA VIN = 3.3V , IL =10mA VFLG = 5V VIN Increasing VIN Decreasing RL = 10 each Output RL = 10 each Output RL = 10 each Output RL = 10 each Output 100 1000 0.8 0.7 DS-1527-00 May 31, 00 3 AIC1527 n BLOCK DIAGRAM OUTA FLGA POWERE N-MOSFET DRIVER CTLA CHARGE PUMP CURRENT LIMIT CS THERMAL SHUTDOWN UVLO IN(A/B) CHARGE PUMP CTLB FLGB CURRENT LIMIT CS DRIVER POWER N-MOSFET OUTB OUTC FLGC POWERE N-MOSFET DRIVER CTLC CHARGE PUMP CURRENT LIMIT CS THERMAL SHUTDOWN UVLO IN(C/D) CHARGE PUMP CTLD FLGD CURRENT LIMIT CS DRIVER POWER N-MOSFET OUTD DS-1527-00 May 31, 00 4 AIC1527 n TYPICAL 118 116 PERFORMANCE CHARACTERISTICS Output On Resistance vs. Temperature 150 140 ON Resistance vs. Supply Voltage ON Resistance (m) 114 112 110 108 106 104 3.0 3.5 RL=47 T=25C ON Resistance (m) 130 120 110 100 90 RL=47 VIN=5V 4.0 4.5 5.0 5.5 80 -40 -20 0 Supply Voltage (V) Temperature (C) 20 40 60 80 100 UVLO Threshold Voltage vs. Temperature 3.0 320 ON State Supply Current vs. Supply Voltage 2.8 280 Threshold Voltage (V) Rising 2.6 Supply Current (A) 240 2.4 Falling 200 Both Switches ON 160 2.2 2.0 -40 -20 0 Temperature ( C) 20 40 60 80 100 120 3 4 5 6 7 8 Supply Voltage (V) ON State Supply Current vs. Temperature 260 OFF State Current vs. Temperature 0.20 240 0.16 Supply Current (A) Supply Current (A) 220 0.12 All Switches OFF 0.08 All Switches ON 200 180 0.04 160 -40 -20 0 Temperature ( C) 20 40 60 80 100 0 -40 -20 0 Temperature (C) 20 40 60 80 100 DS-1527-00 May 31, 00 5 AIC1527 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) OFF State Current vs. Supply Voltage 0.20 1.7 1.6 0.16 Control Threshold vs. Supply Voltage Supply current (A) 0.12 Enable voltage 1.5 1.4 1.3 1.2 VEN Rising All Switches OFF 0.08 VEN Falling 0.04 1.1 0 3 4 5 6 7 8 1.0 3.0 3.5 4.0 4.5 5.0 5.5 Supply Voltage (V) Supply Voltage (V) Turn-On, Turn-Off Characteristics 6 4 Control (V) Outpu (V) 2 0 5 3 1 -1 0.0 0.5 1.0 RL=47 1.5 2.0 2.5 Time (mS) n PIN DESCRIPTION PIN 1(5):CTLA(C)- TTL compatible control input. It controls the turn-on/turn-off of channel A(C) MOSFET. Active High for AIC1527-1 and active low for AIC1527-0. PIN 2(6):FLGA(C)- An active-low and open-drain fault flag output for channel A. It can indicate current limit if CTLA(C) is active. In normal mode operation (CTLA(C) or/and CLTB(D) is active), it also can indicate thermal shutdown or undervoltage. PIN 3(7):FLGB(D)- An active-low and open-drain fault flag output for channel DS-1527-00 May 31, 00 B(D). It can indicate current limit if CTLB(D) is active. In normal mode operation (CTLB(D) or/and CLTA(C) is active), it also can indicate thermal shutdown or undervoltage. PIN 4(8):CTLB(D)- TTL compatible control input. It controls the turn-on/turn-off of channel B(D) MOSFET. Active High for AIC1527-1 and active low for AIC1527-0. PIN 9(13):OUTD(B)-Channel D(B) MOSFE switch output. 6 AIC1527 PIN 10,14:GND - Chip power return, Connect both pins to ground. PIN12(16):OUTC(A) -Channel C(A) MOSFET switch output. PIN15: IN(A/B) - Channel A and B power supply input. PIN 11:IN(C/D) - Channel C AND D power supply input. n APPLICATION INFORMATIONS l Error Flag An open-drained output of an N-channel MOSFET, the FLG output is pulled low to signal the following fault conditions: input undervoltage, output current limit, and thermal shutdown. switches is independent of each other in the case of overcurrent fault. l Supply Filtering A 0.1uF to 1uF bypass capacitor from IN to GND, located near the device, is strongly recommended to control supply transients. Without a bypass capacitor, an output short may cause sufficient ringing on the input (from supply lead inductance) to damage internal control circuitry. l Current Limit The current limit threshold is preset internally. It protects the output MOSFET switches from damage due to undesirable short circuit conditions or excess inrush current often encountered during hot plug-in. The low limit of the current limit threshold of the AIC1527 allows a minimum current of 0.5A through the MOSFET switches. A current limit condition will signal the error flag. l Transient Droop Requirements USB support dynamic attachment (hot plug-in) of peripherals. A current surge is caused by the input capacitance of downstream device. Ferrite beads are recommended in series with all power and ground connector pins. Ferrite beads reduce EMI and limit the inrush current during hot-attachment by filtering highfrequency signals. l Thermal Shutdown When the chip temperature exceeds 135C for any reason other than overcurrent fault of either one of the four MOSFET switches, the thermal shutdown function turns off all MOSFET switches and signal the error flag. A hysteresis of 10Jprevents the MOSFETs from turning back on until the chip temperature drops to below 125 J . However, if thermal shutdown is triggered by chip temperature rise due to overcurrent fault condition of either one of the MOSFET switches, the thermal shutdown function will only turn off the switch that is in overcurrent condition and the other switch can still remain its normal operation. In other words, the thermal shutdown function of the four l Short Circuit Transient Bulk capacitance provides the short-term transient current needed during a hot-attachment event. With a 33uF, 16V tantalum or 100uF, 10V electrolytic capacitor mounted close to downstream connector per port should provide transient drop protection. l Printed Circuit Layout The power circuitry of USB printed circuit boards requires a customized layout to maximize thermal dissipation and to minimize voltage drop and EMI. DS-1527-00 May 31, 00 7 AIC1527 n PHYSICAL DIMENSIONS l 16 LEAD PLASTIC SO (150 mil) (unit: mm) D SYMBOL A A1 E H MIN 1.35 0.10 0.33 0.19 9.80 3.80 5.80 0.40 MAX 1.75 0.25 0.51 0.25 10.00 4.00 6.20 1.27 B C D E e e A 1.27 (TYP) H L A1 B C L l 16 LEAD PLASTIC DIP (unit: mm) D SYMBOL A1 E1 MIN 0.381 2.92 0.35 0.20 18.66 7.62 6.09 MAX -- 4.96 0.56 0.36 19.69 8.26 7.12 2.54(TYP) A2 b E C D A2 A1 L eB b e C E E1 e eB L -- 2.92 10.92 3.81 DS-1527-00 May 31, 00 8 |
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