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ap1212 dual usb high-side power switch ap1212 rev. 4 1 of 12 april 2008 www.diodes.com ? diodes incorporated features general description the ap1212 series are dual integrated high-side power switch with independent enable and flag functions, optimized for self-powered and bus-powered universal serial bus (usb) applications. the ap1212 series support the following usb requirements: each switch channel supplies up to 500ma as required by usb downstream devices; the switch?s low on-resistance meets usb voltage drop requirements; fault current is limited to typically 1000ma, well below the ul 25va safety requirements; and a flag output is available to indicate fault conditions to the local usb controller. soft start eliminates the momentary voltage drop on the upstream port that may occur when the switch is enabled in bus-powered applications. ? compliant to usb specifications ? dual independent switches control ? 2.7v to 5.5v input voltage ? 500ma minimum continuous current per port ? 110m typical on-resistance ? 1.25a maximum short circuit current limit ? independent open-drain fault flag pins ? 110 a typical on-state supply current ? 1 a typical off-state supply current ? output can be forced higher than input (off-state) ? thermal shutdown ? 2.4v typical under voltage lockout (uvlo) additional features include thermal shutdown to prevent catastrophic switch failure from high-current loads, under voltage lockout (uvlo) to ensure that the device remains off unless there is a valid input voltage present, and 3.3v and 5v logic compatible enable inputs. ? 1ms turn-on (soft-start) and fast turn-off ? enable active-high (h) or active-low (l) ? sop-8l: available in ?green? molding compound (no br, sb) ? lead free finish/rohs compliant (note 1) applications ? usb hubs ? hot plug-in power supplies ? battery-charger circuits ordering information ap 1212 x x x x package -u : tube -13 : tape & reel s : sop-8l lead free l : lead free enable h : active high l : active low g : green packing tube 13? tape and reel device package code packaging (note 2) quantity part number suffix quantity part number suffix ap1212xs s sop-8l 100 -u 2500/tape & reel -13 notes: 1. rohs revision 13.2.2003. glass and high temperature solder exemptions applied, see eu directive annex notes 5 and 7. 2. pad layout as shown on diodes inc. suggested pad layout document ap02001, which can be on found our website at http://www.diodes.c om/datasheets/ap02001.pdf .
ap1212 dual usb high-side power switch ap1212 rev. 4 2 of 12 april 2008 www.diodes.com ? diodes incorporated en1 en2 flg1 flg2 1 2 3 4 8 7 6 5 out2 out1 gnd in sop-8l ap1212 ( top view ) pin name description en1 en2 enable: logic-compatible enable input. (h: acti ve high, l: active low). do not float. flg1 flg2 fault flag: active-low, open-drain output. indicates over current, uvlo, and thermal shutdown. gnd supply return. in supply input: output mosfet drain. also suppl ies ic?s internal circuitry. connect to positive supply. out1 out2 switch output: output mosfet source. typically connect to switched side of load. pin assignments pin descriptions
ap1212 dual usb high-side power switch ap1212 rev. 4 3 of 12 april 2008 www.diodes.com ? diodes incorporated block diagram charge pump thermal shutdown charge pump driver current limit uvlo current limit driver cs cs out1 in out2 flg1 en1 en2 flg2 power n-mosfet power n-mosfet typical application circuit usb control 3.3v 5v power supply 0.1uf 2 1 3 4 7 in flg1 en1 flg2 en2 out1 out2 gnd 6 0.1uf 33uf 33uf 0.1uf 8 5 gnd vbus d- d+ gnd vbus d- d+ downstream usb ports ap1212 ferrite bead ferrite bead ferrite bead ferrite bead
ap1212 dual usb high-side power switch ap1212 rev. 4 4 of 12 april 2008 www.diodes.com ? diodes incorporated test circuit (note 3) en1 flg1 flg2 en2 out1 in gnd out2 on off on off 10k r2 10k r1 v cc +5v r3>=10 r4>=10 0.1uf c1 ap1212 notes: 3. before en is asserted, a delay of 10ms minimum from when the supply voltage, vcc, bec omes stable must be allowed. absolute maximum ratings (note 4) symbol parameter rating unit esd hbm human body model esd protection (note 5) 500 v esd mm machine model esd protection (note 5) 150 v v in supply voltage +7 v v flg fault flag voltage +7 v i flg fault flag current 50 ma v out output voltage +7 v v en control input range ?0.3 to v in +2 v t st storage temperature -65 to +150 c recommended operating conditions (note 6) symbol parameter min max unit v in supply voltage 2.7 5.5 v t a operating ambient temperature -40 125 o c notes: 4. exceeding the absolute maximum rating may damage the device. 5. devices are esd sensitive. handling precautions are recomm ended. human body model, tested per jedec 22-a114. machine model, tested per jedec 22-a115. 6. the device is not guaranteed to function outside its operating rating.
ap1212 dual usb high-side power switch ap1212 rev. 4 5 of 12 april 2008 www.diodes.com ? diodes incorporated electrical characteristics (under the conditions of v in =+5v and t a =25 o c, unless otherwise specified) symbol parameter conditions min typ. max unit switch off, out = open (note 7) 0.50 5 a i cc supply current all switches on, out = open (note 7) 110 160 a v it enable input threshold (note 7) 0.8 1.7 2.40 v i en enable input current v en = 0v to 5.5v -1 0.01 1 a c en enable input capacitance 1 pf r ds(on) switch resistance v in = 2.7v ~ 5.5v, i out = 500ma, each switch 110 140 m t ond output turn-on delay r l = 10 each output 30 s t r output turn-on rise time r l = 10 each output 1 ms t offd output turnoff delay r l = 10 each output 0.5 10 s t f output turnoff fall time r l = 10 each output 0.5 10 s i leak output leakage current each out put (output disabled) 10 a i out continuous load current each output 0.6 a i os short-circuit current limit each output (enable into load), v out = 0v 0.8 1.0 1.25 a i lim current-limit threshold ramped load applied to enabled output 1.0 1.2 1.4 a t j increasing 140 c t ts over-temperature shutdown threshold t j decreasing 130 c v in = 5v, i l = 10ma 10 25 r fo error flag output resistance v in = 3.3v, i l = 10ma 15 40 i foh error flag off current v flag = 5v 0.01 1 a v in = increasing 2.5 v uvlo uvlo threshold v in = decreasing 2.3 v ja thermal resistance junction-to-ambient sop-8l 165 c/w jc thermal resistance junction-to-case sop-8l 26 c/w notes: 7. off is v en Q 0.8v and on is v en R 2.4v for the ap1212h. off is v en R 2.4v and on is v en Q 0.8v for the ap1212l.
ap1212 dual usb high-side power switch ap1212 rev. 4 6 of 12 april 2008 www.diodes.com ? diodes incorporated typical performance characteristics 2.5 3.0 3.5 4.0 4.5 5.0 5.5 88 92 96 100 104 108 112 116 120 r l =10ohm t=25 on-resistance vs. supply voltage on-resistance (ms) supply voltage (v) - 40 - 20 0 2 0 4 0 6 0 8 0 10 0 60 70 80 100 90 120 110 130 150 140 160 v supply =3.3v v supply =5v r l =10ohm on-resistance vs. temperature on-resistance (ms) temperature ( o c ) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.2 0.0 0.4 0.8 1.0 1.2 1.4 c l =47 uf r l =10ohm 85 o c 25 o c -40 o c turn-on rise time vs. supply voltage rise time ( m s) supply voltage (v) 0.6 -40 -20 0 20 40 60 80 100 0.2 0.0 0.4 0.6 0.8 1.0 1.2 1.4 r l =10ohm c l =47uf v supply =3.3v v supply =5v turn-on rise time vs. temperature rise time ( ms ) temperature ( o c) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0 20 40 60 80 100 120 140 160 180 200 220 85 o c 25 o c -40 o c on-current vs. supply voltage current ( ga) supply voltage (v) -40-200 20406080100 0 20 40 60 80 100 120 140 160 180 200 v supply =3.3v v supply =5v on-current vs. temperature current ( ga) temperature ( o c)
ap1212 dual usb high-side power switch ap1212 rev. 4 7 of 12 april 2008 www.diodes.com ? diodes incorporated typical performance characteristics (continued) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -50 0 50 100 150 200 250 300 350 85 o c 25 o c -40 o c off-current vs. supply voltage current (na) supply voltage (v) -40-20 0 20406080100 -50 0 50 100 150 200 250 300 350 v supply =3.3v v supply =5v off-current vs. temperature current (na) temperature ( o c) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 1.0 1.2 1.4 1.6 1.8 2.0 v en falling v en rising t=25 o c enable threshold vs. supply voltage enable threshold (v) supply voltage (v) -40 -20 0 20 40 60 80 100 1.0 1.2 1.4 1.6 1.8 2.0 v in =5v v en falling v en rising enable threshold vs. temperature enable threshold (v) temperature ( o c) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 85 o c 25 o c -40 o c short-circuit current-limit vs. supply voltage current-limit (a) supply voltage (v) -40-20 0 20406080100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 v supply =3.3v v supply =5v short-circuit current-limit vs. temperature current-limit (a) temperature ( o c)
ap1212 dual usb high-side power switch ap1212 rev. 4 8 of 12 april 2008 www.diodes.com ? diodes incorporated typical performance characteristics (continued) 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 85 o c 25 o c -40 o c current-limit threshold vs. supply voltage current-limit threshold (a) supply voltage (v) -40-20 0 20406080100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 v supply =3.3v v supply =5v current-limit threshold vs. temperature current-limit (a) temperature ( o c) -40-200 20406080100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 v in falling v in rising uvlo threshold vs. temperature uvlo threshold (v) temperature ( o c)
ap1212 dual usb high-side power switch ap1212 rev. 4 9 of 12 april 2008 www.diodes.com ? diodes incorporated typical performance characteristics (continued) turn-on/turn-off (ap1212h) turn-on (ap1212h) time (10ms/div.) time (200 s/div.) turn-off (ap1212h) enabled into short (ap1212h) time (2ms/div.) time (500 s/div.) current-limit response (ap1212h) current-limit response (ap1212h) time (50ms/div.) time (20 s/div.) v en v en v i out v flg v out i out v in =5v c l =47 f r l =35 ? flg inrush current 140 m a inrush current v out v in =5v c l =47 f r =35 ? output turn-on rise time l 140 ma v en v flg v in =5v c l =47 f r l =35 ? v en v flg v in =5v short-circuit current v v out i out 140 ma i v en v flg v en v in =5v c l =47 f current-limit v in =5v c l =47 f short-circuit current short-circuit current hysteresis (10 o c) threshold thermal shutdown v out current-limit threshold v out i
ap1212 dual usb high-side power switch ap1212 rev. 4 10 of 12 april 2008 www.diodes.com ? diodes incorporated functional description error flag an open-drained output of n-channel mosfet, the flg output is pulled low to signal the follo wing fault conditions: input under voltage, output current limit, and thermal shutdown. current limit the current limit threshold is pres et internally. it protects the output mosfet switches from damage due to undesirable short circuit conditions or excess in rush current often encountered during hot plug-in. the low limit of the current limit threshold of the ap1212 allows a minimum current of 0.5a through the mosfet switches. a current limit condition will signal the error flag. thermal shutdown when the chip temperature exceeds 140oc for any reason other than over current fault of either one of the two mosfet switches, the thermal shutdown function turns off both mosfet switches and signals the error flag. a hysteresis of 10oc prevents the mosfets from turning back on until the chip temperature drops to below 130oc. enable before en is asserted, a delay of 10ms minimum from when the supply voltage, vcc, becomes stable must be allowed. supply filtering a 0.1f to 1f bypass capacitor from in to gnd, located near the device, is strongly recommended to control supply transients. without a bypass capacitor, an out put short may cause sufficient ringing on the input (from supply lead inductance) to damage internal control circuitry. transient droop requirements usb applications support dynamic attachment (hot plug-in) of peripherals. a current surge is c aused by the input capacitance of downstream device. ferrite beads are recommended in series with all power and ground conn ector pins. ferrite beads reduce emi and limit the inrush current during hot-attachment by filtering high-frequency signals. short circuit transient bulk capacitance provides the short-term transient current needed during a hot-attachment event. with a 33f, 16v tantalum or 100f, 10v electrol ytic capacitor mounted close to downstream connector per port should provide transient drop protection. printed circuit layout the power circuitry of usb pr inted circuit boards requires a customized layout to maximize thermal dissipation and to minimize voltage drop and emi.
ap1212 dual usb high-side power switch ( top view ) sop-8l ap1212 x yy ww x x logo part no. internal code year : "07" = 2007 "08" = 2008 xth week : 01~52 ~ 5 8 4 1 blank : lead free g : green enable type : h : active high l : active low package information (all dimensions in mm) ap1212 rev. 4 11 of 12 april 2008 www.diodes.com ? diodes incorporated package type: sop-8l 1.27typ 0.3/0.5 7~9 4.80/5.30 3.70/4.10 5.79/6.20 0.20typ 7~9 3.70/4.10 0.38/1.27 0.08/0.25 gauge plane 0.254 seating plane 0.35max. 45 detail "a" detail "a" 1.30/1.50 1.75max. land pattern recommendation 0.78 (unit: mm) 6x-1.27 8x-1.55 8x-0.60 5.4 marking information
ap1212 dual usb high-side power switch ap1212 rev. 4 12 of 12 april 2008 www.diodes.com ? diodes incorporated important notice life support diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to any product herein. diodes incorporated does not assume any liability arising out of the application or use of any pr oduct described herein; neither does it convey any license under its patent rights, nor the rights of others. the user of products in such applications shall a ssume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on our website, harmless against all dam ages. diodes incorporated products are not authorized for use as critical components in life support devices or systems without the e xpressed written approval of the president of diodes incorporated.

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