AIC1527 Quad USB High-Side Power Switch n FEATURES • 110mΩ (5V Input) High-Side MOSFET Switch. l 500mA Continuous Load Current per Channel. l 220µA Typical On-State Supply Current. l 1µA 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 APPLICATIONS • USB Power Management. l Hot Plug-In Power Supplies. l Battery-Charger Circuit. 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 110mΩ RDS(ON), which meets USB voltage drop requirements for maximum transmission wire length. 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. 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 Ferrite Bead VCC 5.0V + 33µ F 10K + 10K DGND DATA AIC17 1722 IN + GND 0 .01µF 10K VBUS D+ * VBUS D+ 10K 4.50V to 5.25V Upstream VBUS 100mA max D- 33µF 1µF CIN OUT + 10µF COUT GND DATA US B Con tr oller AAIICC155227 VIN ON/OFF OVERCURRENT OVERCURRENT ON/OFF ON/OFF OVERCURRENT OVERCURRENT ON/OFF GND OUTA CTLA FLGA IN(A/B) FLGB GND1 CTLB CTLA OUTB FLGA OUTA FLGB IN(A/B) CTLB + 33µ F * 0.1µF VBUS D+ 0.01 µF DGND DATA 0.1µF VBUS + GND 1 33µF * D+ 0.01 µF D- OUTB GND DATA * 33µ F, 16V Tantalum, or 100 µF, 10V Electrolytic Bold line indicate high- current traces + 33µF * VBUS D+ 0. 01µF 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 PIN CONFIGURATION ORDER NUMBER TOP VIEW PACKAGE TYPE N: PLASTIC DIP S: SMALL OUTLINE AIC1527-0CN AIC1527-1CN (PLASTIC DIP) TEMPERATURE RANGE C:0° C~+70°C AIC1527-0CS AIC1527-1CS (PLASTIC SO) CONTROL POLARITY 0: ACTIVE LOW 1: ACTIVE HIGH CTLA 1 16 OUTA FLGA 2 FLGB 3 15 IN(A/B) ) 14 GND CTLB 4 13 OUTB CTLC 12 OUTC 5 FLGC 6 11 IN(C/D) FLGD 7 10 GND CTLD 8 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 Operating Temperature Range Storage Temperature Range .....… … … … … ...… … ..… … … ....… … … ................. -20°C~80°C .......… … … … … … … ............................… … … ....... -65°C ~ 150°C n TEST CIRCUIT +5V 10K ON CTLA OUTA FLGA IN ( A/B ) OF F 0.1 µ F FLGB GND CTLB OUTB CTLC OUTC FLGC IN ( C/D ) CTLD FLGD 10 Ω GND OUTD AIC1527 (For output reference only) DS-1527-00 May 31, 00 2 AIC1527 n ELECTRICAL CHARACTERISTICS (V IN= 5V, Ta=25°C, unless otherwise specified.) PARAMETERS Supply Current Control Input Voltage CONDITIONS TYP. MAX. UNIT VCTL =Logic “0” , OUT=Open 1.50 10 µA VCTL =Logic “1” , OUT=Open 220 320 VCTL =Logic “0” VCTL =Logic “1” Control Input Current MIN. 0.8 V 2.4 VCTL =Logic “0” 0.01 1 VCTL =Logic “1” 0.01 1 Control Input Capacitance 1 Output MOSFET Resistance 110 µA pF 150 mΩ µS Output Turn-On Rise Delay RL = 10Ω each Output 100 Output Turn-On Rise Time RL = 10Ω each Output 1000 2500 µS Output Turn-Off Delay RL = 10Ω each Output 0.8 20 µS Output Turn-Off Fall Time RL = 10Ω each Output 0.7 20 µS 10 µA 1.25 A Output Leakage Current Current Limit Threshold 0.6 1.0 Overtemperature Shutdown TJ Increasing 135 Threshold TJ Decreasing 125 Error Flag Output Resistance Error Flag Off Current UVLO Threshold DS-1527-00 °C VIN = 5V , IL =10 mA 10 25 VIN = 3.3V , IL =10mA 15 40 0.01 1 VFLG = 5V VIN Increasing 2.6 VIN Decreasing 2.4 Ω µA V May 31, 00 3 AIC1527 n BLOCK DIAGRAM OUTA DRIVER CTLA CURRENT LIMIT THERMAL SHUTDOWN UVLO CHARGE PUMP CURRENT LIMIT CS IN(A/B) CS CTLB FLGB DRIVER POWER N-MOSFET CHARGE PUMP POWERE N-MOSFET FLGA OUTB OUTC DRIVER CTLC CURRENT LIMIT THERMAL SHUTDOWN UVLO CHARGE PUMP CURRENT LIMIT CTLD FLGD DRIVER CS IN(C/D) CS POWER N-MOSFET CHARGE PUMP POWERE N-MOSFET FLGC OUTD DS-1527-00 May 31, 00 4 AIC1527 n TYPICAL PERFORMANCE CHARACTERISTICS Output On Resistance vs. Temperature 118 150 116 140 ON Resistance (mΩ) ON Resistance (mΩ) ON Resistance vs. Supply Voltage RL=47Ω T=25°C 114 112 110 108 106 130 120 110 RL=47Ω VIN=5V 100 90 104 3.0 3.5 4.0 4.5 80 5.5 5.0 -40 -20 0 Supply Voltage (V) UVLO Threshold Voltage vs. Temperature Supply Current (µA) Threshold Voltage (V) 2.6 Falling 2.4 2.2 100 240 200 Both Switches ON 160 -20 0 20 40 Temperature (° C) 60 80 120 3 100 4 5 6 7 8 Supply Voltage (V) OFF State Current vs. Temperature ON State Supply Current vs. Temperature 260 0.20 240 0.16 Supply Current (µA) Supply Current (µA) 80 280 Rising 220 All Switches ON 200 0.12 All Switches OFF 0.08 0.04 180 DS-1527-00 60 320 2.8 160 -40 40 ON State Supply Current vs. Supply Voltage 3.0 2.0 -40 20 Temperature (°C) -20 0 20 40 Temperature (° C) 60 80 100 0 -40 -20 0 20 40 Temperature (°C) 60 80 100 May 31, 00 5 AIC1527 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) OFF State Current vs. Supply Voltage Control Threshold vs. Supply Voltage 0.20 1.7 1.6 Enable voltage Supply current (µA) 0.16 0.12 All Switches OFF 0.08 VEN Rising 1.5 1.4 VEN Falling 1.3 1.2 0.04 1.1 0 3 4 5 6 7 8 Supply Voltage (V) 1.0 3.0 3.5 4.0 4.5 5.0 5.5 Supply Voltage (V) Turn-On, Turn-Off Characteristics 6 Control (V) 4 2 0 Outpu (V) 5 3 RL=47Ω 1 -1 0.0 0.5 1.0 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 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. May 31, 00 6 AIC1527 PIN 10,14:GND - Chip power return, Connect both pins to ground. PIN 11:IN(C/D) - Channel C AND D power supply input. PIN12(16):OUTC(A) -Channel C(A) MOSFET switch output. PIN15: IN(A/B) - Channel A and B power supply input. n APPLICATION INFORMATIONS l Error Flag An open-drained output of an N-channel MOSFET, the switches is independent of each other in the case of overcurrent fault. FLG output is pulled low to signal the following fault conditions: input undervoltage, output current limit, and thermal shutdown. l Supply Filtering A 0.1uF to 1uF bypass capacitor from IN to GND, located near the device, is strongly recommended to 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 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 Transient Droop Requirements AIC1527 allows a minimum current of 0.5A through the USB support dynamic attachment (hot plug-in) of MOSFET switches. A current limit condition will signal peripherals. A current surge is caused by the input the error flag. capacitance of downstream device. Ferrite beads are recommended in series with all power and ground connector pins. Ferrite beads reduce EMI and limit the l Thermal Shutdown When the chip temperature exceeds 135°C for any reason other than overcurrent fault of either one of the four MOSFET switches, the thermal shutdown inrush current during hot-attachment by filtering highfrequency signals. l Short Circuit Transient function turns off all MOSFET switches and signal the error flag. A hysteresis of 10℃prevents the MOSFETs Bulk capacitance provides the short-term transient from turning back on until the chip temperature drops to below 125 ℃ . However, if thermal shutdown is 33uF, 16V tantalum or 100uF, 10V electrolytic triggered by chip temperature rise due to overcurrent per port should provide transient drop protection. current needed during a hot-attachment event. With a capacitor mounted close to downstream connector fault condition of either one of the MOSFET switches, the thermal shutdown function will only turn off the l Printed Circuit Layout switch that is in overcurrent condition and the other The power circuitry of USB printed circuit boards switch can still remain its normal operation. In other requires a customized layout to maximize thermal words, the thermal shutdown function of the four 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 H E SYMBOL MIN MAX A 1.35 1.75 A1 0.10 0.25 B 0.33 0.51 C 0.19 0.25 D 9.80 10.00 E 3.80 4.00 e e H 5.80 6.20 L 0.40 1.27 SYMBOL MIN MAX A1 0.381 — A2 2.92 4.96 b 0.35 0.56 C 0.20 0.36 D 18.66 19.69 E 7.62 8.26 E1 6.09 7.12 A1 A 1.27 (TYP) B L C l 16 LEAD PLASTIC DIP (unit: mm) D E1 E A2 A1 C L eB b DS-1527-00 e e 2.54(TYP) eB — 10.92 L 2.92 3.81 May 31, 00 8