1 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation sp2526a dual usb high-side power switch ? applications usb power management hot plug-in power supplies battery charger circuit now available in lead free packaging active-high version: sp2526a-1 active-low version: sp2526a-2 typical application circuit features +3.0v to +5.5v input voltage range two independent power switches two error flag outputs, open drain 2.6v undervoltage lockout 1.25a short circuit current limit 150m ? maximum on-resistance 110 a on-state supply current 1 a shutdown current output can be forced higher than input (off-state) thermal shutdown 1ms soft-start power up, fast turn off the sp2526a device is a dual +3.0v to +5.5v usb supervisory power control switch ideal for self-powered and bus-powered universal serial bus (usb) applications. each switch has low on-resistance (110m ? typical) and can supply 500ma minimum. the fault currents are limited to 1.0a typical and the flag output pin for each switch is available to indicate fault conditions to the usb controller. the thermal shutdown feature will prevent damage to the device when subjected to excessive current loads. the undervoltage lockout feature will ensure that the device will remain off unless there is a valid input voltage present. description 1 2 3 4 5 6 7 8 sp2526a 8 pin nsioc outa in outb gnd ena flga flgb enb two port self powered hub d ata gnd d- d+ vbus in out gnd 10 f cout 10k 10k + 1 f cin vin on/off overcurrent overcurrent on gnd spx1521 ena flga flgb enb outa in gnd outb 0.1 f 33 f ferrite bead ferrite bead ferrite bead ferrite bead 0.01 f 0.01 f 33 f d ata d ata vbus d+ d- gnd vbus d+ d- gnd vcc 5.0v * * * + + + + +33 f usb controller sp2526a 4.50v to 5.25v upstream vbus 100ma max 33 f, 16v tantalum, or 100 f, 10v electrolytic bold line indicate high-current traces
2 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation supply voltage(v in )..........................................7.0v fault flag voltage (v flg )..................................7.0v fault flag current (i flg )..................................50ma enable control input (v en ).....................-0.3v -15v unless otherwise noted, the following specifications apply for v in = +5.0v, t a = 25 c. operating temperature range.............-40?c to +85?c maximum junction temperature ........................125?c storage temperature range..............-65?c to +150?c soldering temperature (10 sec.).........................260?c power dissipation per package 8-pin nsoic (derate 6.14mw/ o c above +70 o c)..........500mw these are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. exposure to absolute maximum rating conditions for extended periods of time may affect reliability. absolute maximum ratings electrical characteristics r e t e m a r a p. n i m. p y t. x a ms t i n us n o i t i d n o c t n e r r u c y l p p u s5 7 . 0 0 1 1 0 . 5 0 6 1 a v n e n e p o = t u o " 0 " c i g o l = v n e n e p o = t u o " 1 " c i g o l = e g a t l o v t u p n i e l b a n e 8 . 0 7 . 1 0 . 2 4 . 2v v n e " 0 " c i g o l = v n e " 1 " c i g o l = t n e r r u c t u p n i e l b a n e1 0 . 0 1 0 . 0 1 1 a v n e " 0 " c i g o l = v n e " 1 " c i g o l = e c n a t i c a p a c t u p n i e l b a n e1f p e c n a t s i s e r t e f s o m t u p t u o0 1 10 5 1m ? y a l e d n o - n r u t t u p t u o0 0 1 s r l 0 1 = ? t u p t u o h c a e e m i t e s i r n o - n r u t t u p t u o0 0 0 10 0 0 4 s r l 0 1 = ? t u p t u o h c a e y a l e d f f o - n r u t t u p t u o8 . 00 2 s r l 0 1 = ? t u p t u o h c a e e m i t l l a f f f o - n r u t t u p t u o7 . 00 2 s r l 0 1 = ? t u p t u o h c a e t n e r r u c e g a k a e l t u p t u o0 1 a d l o h s e r h t t i m i l t n e r r u c6 . 00 . 15 2 . 1a n w o d t u h s e r u t a r e p m e t - r e v o d l o h s e r h t 5 3 1 5 2 1 o c t j g n i s a e r c n i t j g n i s a e r c e d e c n a t s i s e r t u p t u o g a l f r o r r e0 1 5 1 5 2 0 4 ? v n i i , v 5 = l a m 0 1 = v n i i , v 3 . 3 = l a m 0 1 = t n e r r u c f f o g a l f r o r r e1 0 . 01 a v g a l f v 5 = d l o h s e r h t o l v u6 . 2 4 . 2 v v n i g n i s a e r c n i v n i g n i s a e r c e d
3 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation test circuit pin description gnd sp2526a in 10 ? v cc 10 ? outa outb ena flga flgb enb 10k r1 10k r2 r4 r4 0.1 f c1 +5v on on off off r e b m u n n i pe m a n n i pn o i t p i r c s e d 1a n e e h t r o f h g i h e v i t c a s i n i p t u p n i s i h t . a h c t i w s t e f s o m r o f t u p n i e l b a n e 2 - a 6 2 5 2 p s e h t r o f w o l e v i t c a d n a 1 - a 6 2 5 2 p s 2a g l f e t a c i d n i n a c t i . a l e n n a h c t o f t u p t u o g a l f t l u a f d e n i a r d - n e p o d n a w o l - e v i t c a n a b n e d n a / r o a n e ( n o i t a r e p o e d o m l a m r o n n i . e v i t c a s i a n e n e h w t i m i l t n e r r u c . e g a t l o v r e d n u r o n w o d u h s l a m r e h t e t a c i d n i n a c o s l a t i , ) e v i t c a s i 3b g l f e t a c i d n i n a c t i . b l e n n a h c t o f t u p t u o g a l f t l u a f d e n i a r d - n e p o d n a w o l - e v i t c a n a b n e d n a / r o a n e ( n o i t a r e p o e d o m l a m r o n n i . e v i t c a s i b n e n e h w t i m i l t n e r r u c . e g a t l o v r e d n u r o n w o d u h s l a m r e h t e t a c i d n i n a c o s l a t i , ) e v i t c a s i 4b n e e h t r o f h g i h e v i t c a s i n i p t u p n i s i h t . b h c t i w s t e f s o m r o f t u p n i e l b a n e 2 - a 6 2 5 2 p s e h t r o f w o l e v i t c a d n a 1 - a 6 2 5 2 p s 5b t u o t e f s o m e h t f o n i p t u p t u o e h t s i s i h t . b l e n n a h c h c t i w s t e f s o m r o f t u p t u o . d a o l e h t f o e d i s d e h c t i w s e h t o t d e t c e n n o c y l l a c i p y t , b l e n n a h c f o e c r u o s 6d n g. d n u o r g 7n it u p n i y l p p u s r e w o p 8a t u o t e f s o m e h t f o n i p t u p t u o e h t s i s i h t . a l e n n a h c h c t i w s t e f s o m r o f t u p t u o . d a o l e h t f o e d i s d e h c t i w s e h t o t d e t c e n n o c y l l a c i p y t , a l e n n a h c f o e c r u o s
4 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation 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. 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 sp2526a allows a minimum current of 0.6a through the mosfet switches. a current limit condition will signal the error flag. thermal shutdown when the chip temperature exceeds 135? for any reason other than overcurrent fault of either one of the two mosfets, the thermal shut- down function turns off both mosfet switches and signals the error flag. a hysteresis of 10? prevents the mosfets from turning back on until the chip temperature drops below 125?. however, if thermal shutdown is triggered by chip temperature rise resulting 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 ther- mal shutdown function of the two switches is independent of each other in the case of overcurrent fault. supply filtering a 0.1 f to 1 f bypass capacitor from in to gnd, located near the device, is strongly recom- mended 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. transient requirements usb supports 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 high-frequency signals. short circuit transient bulk capacitance provides the short-term tran- sient current needed during a hot-attachment event. a 33 f,16v tantalum or a 100 f,10v electro- lytic capacitor mounted close to downstream con- nector each port should provide transient drop protection printed circuit layout the power circuitry of usb printed circuit boards requires a customized layout to maximize ther- mal dissipation and to minimize voltage drop and emi. application information
5 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation block diagram current limit cs outa charge pump uvlo thermal shutdown current limit driver driver charge pump cs flga ena enb flgb outb in power n-mosfet power n-mosfet
6 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation figure 4. on-state supply current vs. supply voltage figure 1. output on-resistance vs. supply voltage figure 2. output on-resistance vs. temperature figure 3. uvlo threshold voltage vs. temperature typical performance characteristics v in = +5.0v, single mosfet switch section, and t amb = +25 o c unless otherwise noted. on-resistance (millohms) output-on-resistance (millohms) uvlo threshold voltage (v) enable threshold voltage (v) r l = 47? t a = 25oc 104 106 108 110 112 114 116 118 2.5 3 3.5 4 4.5 5 5.5 6 supply voltage (v) 60 70 80 90 100 110 120 130 140 -40 -20 0 20 40 60 80 100 temperature (c) r l = 47? t a = 25oc 2 2.2 2.4 2.6 2.8 3 -40 -20 0 20 40 60 80 100 temperature (c) r ising falling both switches on 60 80 100 120 140 160 345678 supply voltage (v)
7 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation figure 7. off-state supply current vs. supply voltage figure 5. on-state supply current vs. temperature figure 6. off-state supply current vs. temperature typical performance characteristics v in = +5.0v, single mosfet switch section, and t amb = +25 o c unless otherwise noted. supply current ( a) offstate supply current ( a) supply current ( a) offstate supply current ( a) figure 8. control threshold vs. supply voltage 80 90 100 110 120 130 -40 -20 0 20 40 60 80 100 temperature (c) switches enabled 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 33.544.555.5 supply voltage (v) enable voltage rising e nable voltage falling 0.00 0.02 0.04 0.06 0.08 0.10 -40 -20 0 20 40 60 80 100 temperature (c) s witches disabled 0.00 0.02 0.04 0.06 0.08 0.10 -40 -20 0 20 40 60 80 100 temperature (c) b oth switches off
8 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation typical performance characteristics v in = +5.0v, single mosfet switch section, and t amb = +25 o c unless otherwise noted. figure 9. turn-on/turn-off characteristics -1 1 3 5 0 2 4 6 0 0.5 1.5 2.0 2.5 1.0 output (v) control (v) rl = 47? ti me (ms)
9 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation package: 8 pin nsoic front view l ? gauge plane l2 c r r1 ? seating plane h h ? d e e/2 3 2 1 b e e1 e1/2 6 8 pin1 designator to be within this index area (d/2 x e1/2) to p view (l1) 5 4 7 d/2 a a2 a1 side view seating plane min nom max min nom max a 1.35 - 1.75 0.053 - 0.069 a1 0.10 - 0.25 0.004 - 0.010 a2 1.25 - 1.65 0.049 - 0.065 b 0.31 - 0.51 0.012 - 0.020 c 0.17 - 0.25 0.007 - 0.010 e e1 e h 0.25 0.50 0.010 - 0.020 l 0.40 - 1.27 0.016 - 0.050 l1 l2 r 0.07 - - 0.003 - - r1 0.07 - - 0.003 - - ? -8 0 - 8 ? 5 - 15 5 - 15 ? 0 - - 0 - - d 0.041 ref sipex pkg signoff date/rev: jl aug16-05 / rev a 4.90 bsc 6.00 bsc 3.90 bsc 1.27 bsc 1.04 ref 0.193 bsc 0.25 bsc 0.010 bsc 0.236 bsc 0.050 bsc 0.154 bsc 8 pin nsoic jedec ms-012 variation aa symbol dimensions in millimeters: controlling dimension dimensions in inches conversion factor: 1 inch = 25.40 mm
10 date: 1/4/06 sp2526a dual usb high-side power switch ? copyright 2006 sipex corporation part number temperature range package types SP2526A-1EN ................................................. -40 c to +85 c ................................................... 8-pin nsoic SP2526A-1EN/tr ........................................... -40 c to +85 c .................................................. 8-pin nsoic sp2526a-2en ................................................. -40 c to +85 c ................................................... 8-pin nsoic sp2526a-2en/tr ........................................... -40 c to +85 c .................................................. 8-pin nsoic ordering information corporation analog excellence sipex corporation reserves the right to make changes to any products described herein. sipex does not assume any liability aris ing out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor t he rights of others. sipex corporation headquarters and sales office 233 south hillview drive milpitas, ca 95035 tel: (408) 934-7500 fax: (408) 935-7600 available in lead free packaging. to order add -l suffix to part number. example: SP2526A-1EN/tr = standard; SP2526A-1EN-l/tr = lead free. /tr = tape and reel pack quantity is 2,500 for nsoic.
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