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AIC1515 dual usb high-side power switch analog integrations corporation si-soft research center ds-1515g-01 20100126 3a1, no.1, li-hsin rd. i, science park, hsinchu 300, taiwan, r.o.c. tel: 886-3-5772500 fax: 886-3-5772510 www.analog.com.tw 1 ? features ? 110m (5v input) high-side mosfet switch. z 1.2a continuous load current per channel. z 110 a typical on-state supply current. z 1 a typical off-state supply current. z current-limit / short circuit protection. z fault flag with 3ms filter eliminates false assertions. (1515d) z thermal shutdown protection under overcurrent condition. z undervoltage lockout ensures that switch is off at start up. z open-drain fault flag. z slow turn on and fast turn off. z enable active-high or active-low. ? applications z usb power management. z hot plug-in power supplies. z battery-charger circuit. ? description the AIC1515 is a dual high-side power switch for self-powered and bus-powered universal serial bus (usb) applications. both high-side switches are mosfet with 110m r ds(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 1.5a, and the thermal shut down functions of the power switches independently control their channel under overcurrent condition. guaranteed minimum output rise time limits inrush current during hot plug-in as well as minimizing emi and prevents the voltage at upstream port from dropping excessively.
AIC1515 2 ? typical application circuit ? ordering information packing type tr: tape & reel tb: tube packaging type s8: sop-8 g: green package control polarity 0: active low 1: active high fault flag response delay time d: delay 3ms n: no example: AIC1515d-0gs8tr ? delay 3ms, active low version, in sop-8 green package & taping & reel packing type AIC1515n-1gs8tr ? no delay, active high version, in sop-8 green package & taping & reel packing type pin configuration sop-8 top view gnd outa in outb flgb flga ctlb ctla 1 3 4 2 8 6 5 7 AIC1515x-xxxxx
AIC1515 3 absolute maximum ratings supply voltage (v in ) 7.0v fault flag voltage (v flg ) 7.0v fault flag current (i flg ) 50ma control input (v ctl ) -0.3v ~7v operating temperature range -40 c~85 c junction temperature 150 c storage temperature range -65 c ~ 150 c lead temperature (soldering, 10sec) 260 c thermal resistance, ja (junction to ambient) sop-8 160 c/w (assume no ambient airflow, no heatsink) thermal resistance, jc (junction to case) sop-8 40 c/w absolute maximum ratings are those values beyond which the life of a device may be impaired.
AIC1515 4 ? electrical characteristics (v in = 5v, t a =25 c, unless otherwise specified.) (note 1) parameters conditions min. typ. max. unit supply voltage 3.1 6.0 v supply current v ctl =logic ?0?, out=open v ctl =logic ?1?, out=open 0.75 110 5 160 a control input voltage v ctl =logic ?0? v ctl =logic ?1? 2.4 0.8 v control input current v ctl =logic ?0? v ctl =logic ?1? 0.01 0.01 1 1 a control input capacitance 1 pf output mosfet resistance 110 150 m output turn-on rise delay r l = 10 each output 600 1000 s output turn-on rise time r l = 10 each output 1800 3000 s output turn-off delay r l = 10 each output 0.8 20 s output turn-off fall time r l = 10 each output 0.7 20 s output leakage current 10 a current limit threshold 1.25 1.5 1.75 a over current flag response delay(note2) apply v out = 0v until flg low 1.5 3 7 ms over temperature shutdown threshold t j increasing t j decreasing 135 125 c error flag output resistance v in = 5v, i l =10 ma v in = 3.3v, i l =10ma 15 15 30 40 error flag off current v flg = 5v 0.01 1 a uvlo threshold v in increasing v in decreasing 2.45 2.85 2.65 3.05 v note 1: specifications are production tested at t a =25 c. specifications over the -40 c to 85 c operating temperature range are assured by design, characterization and correlation with statistical quality controls (sqc). note 2: this parameter belongs to AIC1515d-xxxxx .
AIC1515 5 typical performance characteristics 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0 20 40 60 80 100 120 140 i l =100ma t a =25 o c -40-20 0 20406080100 0 20 40 60 80 100 120 i l =100ma t a =25 o c -4 0 -2 0 0 2 0 4 0 60 80 1 00 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 falling rising 3.03.54.04.55.05.56.0 60 70 80 90 100 110 120 130 140 150 both switches on - 40 - 20 0 20 40 60 80 100 60 65 70 75 80 85 90 95 100 both switch on -40-20 0 20406080100 0.00 0.05 0.10 0.15 0.20 0.25 both switch off fig. 1 on resistance vs. supply voltage supply voltage (v) on resistance (m ) temperature ( c) fig. 2 on resistance vs. temperature on resistance (m ) fi g . 3 uvlo threshold volta g e vs. tem p erature te m p e r ature ( c ) threshold voltage (v) fig. 4 on-state supply current vs. supply voltage supply voltage (v) suppl y current ( a ) fig. 5 on state current vs. temperature temperature ( c) supply current ( a) fig. 6 off-state current vs. temperature temperature ( c) supply current ( a)
AIC1515 6 typical performance characteristics (continued) 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0.00 0.01 0.02 0.03 0.04 both switch off 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 -40-20 0 20406080100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 3 . 0 3 . 5 4. 0 4. 5 5 . 0 5 . 5 6 . 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 -40-20 0 20406080100 0.0 0.5 1.0 1.5 2.0 fig. 7 off-state current vs. supply voltage supply voltage (v) supply current ( a) fig. 8 enable threshold vs. supply voltage supply voltage (v) enable threshold fig. 10 current limit vs. temperature temperature ( c) current limit (m a) fig. 9 current limit vs. supply voltage supply voltage (v) current limit (m a) rising time (m s) temperature ( c) rising time (m s) fig. 11 rising time vs. supply voltage supply voltage (v) fig. 12 rising time vs. temperature
AIC1515 7 typical performance characteristics (continued) 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -40 -20 0 20 40 60 80 100 0 .0 0 .5 1.0 1.5 2 .0 2 .5 3 .0 3 .5 4 .0 fig. 13 flag delay time vs. supply voltage supply voltage (v) flag delay time (m s) fig. 14 flag delay time vs. temperature temperature ( c) flag delay time (m s) ctl ctl v out flag i in v out v out v out v in fig. 15 turn on time fig. 16 turn off time fig. 17 current limit event fig. 18 uvlo protection c l =10uf r l =10 c l =10uf r l =10
AIC1515 8 ? block diagram ? pin descriptions pin 1: ctla - controls the turn-on/turn-off of channel a mosfet with ttl as a control input. active high for AIC1515-1 and active low for AIC1515-0. pin 2: flga - an active-low and open-drained fault flag output for channel a. flga is an indicator for current limit when ctla is active. in normal mode operation (ctla or/and cltb is active), it also can indicate thermal shutdown or undervoltage. pin 3: flgb - an active-low and open-drained fault flag output for channel b. flgb is an indicator for current limit when ctlb is active. in normal mode operation (ctlb or/and clta is active), it also can indicate thermal shutdown or undervoltage. pin 4: ctlb - controls the turn-on/turn-off of channel b mosfet with ttl as a control input. active high for AIC1515-1 and active low for AIC1515-0. pin 5: outb - channel b mosfet switch output. pin 6: gnd - chip power ground. pin 7: in - power supply input. pin 8: outa - channel a mosfet switch output.
AIC1515 9 ? application information z error flag an error flag is an open-drained output of an n-channel mosfet. flg output is pulled low to signal the following fault conditions: input undervoltage, output current limit, and thermal shutdown. the fault flag response delay time is 3ms. z current limit the current limit threshold is preset internally. it protects the output mosfet switches from damage resulting from undesirable short circuit conditions or excess inrush current, which is often encountered during hot plug-in. the low limit of the current limit threshold of the AIC1515 allows a minimum current of 1.2a through the mosfet switches. the error flag signals when any current limit conditions occur. z thermal shutdown when temperature of AIC1515 exceeds 135 c for any reasons, the thermal shutdown function turns both mosfet switches off and signals the error flag. a hysteresis of 10 c prevents the mosfets from turning back on until the chip temperature drops below 125 c. however, if thermal shutdown is triggered by chip temperature rise resulti ng from 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 two switches is independent of each other in the case of overcurrent fault. z supply filtering a 0.1 f to 1 f 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. z transient requirements usb supports dynamic attachment (hot plug-in) of peripherals. a current surge is caused by the input capacitance of down stream 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 high-frequency signals. z short circuit transient bulk capacitance provides the short-term transient current needed during a hot-attachment event. a 33 f/16v tantalum or a 100 f/10v electrolytic capacitor mounted close to downstream connector each port should provide transient drop protection. z 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.
AIC1515 10 ? application circuit d+ d- gnd vbus overcurrent in out a gnd c tla f lga f lgb ctlb ou t b a ic151 5 usb controller gnd on/off 4.50v to 5.25v up str eam vbus 100ma max data d+ d- gn d vbus 0.01 f 100 f data 0.01 f 100 f data 0.1 f 10k 10k 33 f 5.0v vcc ferrite bead overcurrent vin on / d+ d- gnd vbu s a ic1748 out in gnd 1 f c in 1 f c out fig. 19 two-port self-powered hub
AIC1515 11 ? physical dimensions (unit: mm) z sop-8 note: information provided by aic is believed to be accurate and reliabl e. however, we cannot assume responsibility for use of any ci rcuitry other than circuitry entirely embodied in an aic product; nor fo r any infringement of patents or other rights of third parties that may result from its use. we reserve the right to c hange the circuitry and specif ications without notice. life support policy: aic does not authorize any aic product for us e in life support devices and/or systems. life support device s or systems are devices or systems which, (i) are intended for surgic al implant into the body or (ii) support or sustain life, and whose failure to perform, when properly used in accordance with inst ructions for use provided in t he labeling, can be reasonably expected to result in a significant injury to the user. a l view b 0.25 seating plane section a-a base metal gauge plane with plating a1 b c d e aa h e h x 45 see view b h l d e h e c b a1 0.50 0.25 0.40 0 1.27 8 1.27 bsc 4.80 5.80 3.80 0.33 0.19 0.10 5.00 6.20 4.00 0.51 0.25 0.25 s y m b o l a sop-8 millimeters 1.35 min. 1.75 max. note: 1. refer to jedec ms-012aa. 2. dimension "d" does not include mold flash, protrus ions or gate burrs. mold flash, protrusion or gate bur rs shall not exceed 6 mil per side . 3. dimension "e" does not include inter-lead flash or protrusions. 4. controlling dimensi on is millimeter, converted inc h dimensions are not necessarily exact.

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