?2000 imp, inc. 408-432-9100/www.impweb.com 1 imp252 imp252 4/2 4/2 7 7 p ower m anagement a dvance p roduct i nformation applications usb host and self-powered hubs usb video monitors usb printers usb rev. 1.1 and 2.0 compliant four independent switches 2.7v to 5.5v input operation low mosfet on resistance ?imp2524: 0.1 ? , 0.14 ? maximum ?imp2527: 0.2 ? , 0.3 ? maximum 500ma continuos load current per switch low supply current 110? on-state current, 0.75? off-state current 1.25a maximum current limit, 750ma typical thermal shutdown 2.4v undervoltage lockout (uvlo) open-drain flag output ?undervoltage ?current limit ?thermal shutdown output can be force higher than input active high(-1) and active low(-2) enable 16-pin so and dip packages, die available pin compatible with the micrel mic2524 and mic2527 typical application quad usb high-side p quad usb high-side p o o w w er er switc switc h wit h wit h f h f ault det ault det ection ection the imp2524 and imp2527 are complete power management solutions for bus-powered and self-powered usb hubs. each device contains four independent power switches and fault detection logic. the imp2524 channel resistance is a low 140m ? maximum and the imp2527 channel resistance is 300 ? maximum. both device operate with voltage inputs from 2.7v to 5.5v the imp2524/2527 conform to the new usb 1.1 standard. fault current is limited to 750ma typically, and a flag output for each switch conveys fault information to the local usb controller. the imp252x ?oft-start function ramps the on-current to eliminate any excessive voltage drop on the input side that could occur when capacitive loads are charged. self-monitoring features include thermal shutdown to prevent catastrophic switch failure from high-current loads and undervoltage lockout (uvlo) that insures that the device remains off unless there is sufficient supply voltage present. the switch enable input logic can interface with both 3.3v and 5v logic. both active-high (-1 devices) and active-low (-2 devices) enable logic versions are available. supply current is a low 0.75 a when disabled and just 110 a when enabled the quad imp2524/7 devices are available in 16-pin dip and 16-pin so packages and are pin compatible replacements for the micrel mic2524-1/-2 and mic2527-1/2 devices. imp offers a complete family of usb power management products. for single-switch applications see the imp2525 and imp2525a data sheets. the single-switch imp2525a features a 0.07 ? switch resistance. for dual-switch applications, refer to the imp2526 data sheet. data ferrite bead 2 1 3 4 5 6 7 8 ina/b inc/d outa outb outc outd gnd gnd 16 15 14 13 12 11 10 9 ena flga enb flgb enc flgc end flgd imp2524 imp2527 usb controller v + d+ d on/off overcurrent ldo out in gnd gnd 27k 1 m f 0.01 m f 0.1 m f 10k 2524/27_01.eps 33 m f* gnd d d+ downstream usb port 1 500ma max. v bus + imp2527 5.1v 3% 5v 1% or imp2524 5v 3% 0.01 m f 33 m f* gnd d d+ downstream usb port 2 500ma max. v bus + 4.7 m f + 0.01 m f 33 m f* gnd d d+ downstream usb port 3 500ma max. v bus + 0.01 m f 33 m f* gnd d d+ downstream usb port 4 500ma max. v bus + bold/ blue lines indicate 0.1" wide, 1-oz. copper high-current traces. *33 m f, 16v tantalum or 100 m f, 10v electrolytic per port key features
imp252 imp252 4/2 4/2 7 7 2 408-432-9100/www.impweb.com ?2000 imp, inc. 6 pin descriptions pin configuration ordering information 4 gnd 3 outa 2 ena 1 flga 13 ina/b 14 outb 15 enb 16 flgb 8 flgc 7 enc 6 outc 5 inc/d 9 flgd 10 end 11 outd 12 gnd 2524/27_02.eps imp2524/27 so/dip 2524/27_03.eps outa 3 ina/b gnd 13 4 gnd 12 flga 2 ena 1 logic, charge pump outb 14 enb 15 flgb 16 logic, charge pump outc 6 inc/d 5 flgc 8 enc 7 logic, charge pump outd 11 end 10 flgd 9 logic, charge pump imp2524/27 r e b m u n n i pe m a nn o i t c n u f 1a g l f - r e d n u o t e s n o p s e r n i e t a t s w o l - e v i t c a n a o t n i s e o g t u p t u o n i a r d - n e p o s i h t . t u p t u o a g a l f t l u a f . s n o i t i d n o c n w o d t u h s l a m r e h t r o t i m i l t n e r r u c , e g a t l o v 2a n e h g i h - e v i t c a h t o b . t u p n i c i g o l l o r t n o c r e v i r d h c t i w s t e f s o m b l e n n a h c e h t s i n i p s i h t . t u p n i a e l b a n e . e l b a l i a v a e r a s e c i v e d c i g o l ) x i f f u s 2 - ( w o l - e v i t c a d n a ) x i f f u s 1 - ( 3a t u o . s e t a t s f f o d n a n o o t n i d a o l e h t s e v i r d n i p t u p t u o e h t . ) e c r u o s t e f s o m ( t u p t u o h c t i w s a - l e n n a h c 4d n g . r e h t e g o t 6 d n a 4 s n i p h t o b t c e n n o c . c i e h t f o y r t i u c r i c l a n r e t n i e h t r o f n r u t e r y l p p u s r e w o p . d n u o r g 5d / c n i . n o i t c e n n o c n i a r d t e f s o m g n i h c t i w s e h t s i s i h t . e g a t l o v t u p n i y l p p u s r e w o p e v i t i s o p d d n a c l e n n a h c . t i u c r i c p m u p - e g r a h c e h t d n a c i g o l e h t r o f t u p n i e g a t l o v y l p p u s d l e n n a h c d n a c l e n n a h c e h t s i t i 6c t u o . s e t a t s f f o d n a n o o t n i d a o l e h t s e v i r d n i p t u p t u o e h t . ) e c r u o s t e f s o m ( t u p t u o h c t i w s c - l e n n a h c 7c n e h g i h - e v i t c a h t o b . t u p n i c i g o l l o r t n o c r e v i r d h c t i w s t e f s o m b l e n n a h c e h t s i n i p s i h t . t u p n i c e l b a n e . e l b a l i a v a e r a s e c i v e d c i g o l ) x i f f u s 2 - ( w o l - e v i t c a d n a ) x i f f u s 1 - ( 8c g l f - r e d n u o t e s n o p s e r n i e t a t s w o l - e v i t c a n a o t n i s e o g t u p t u o n i a r d - n e p o s i h t . t u p t u o c g a l f t l u a f . s n o i t i d n o c n w o d t u h s l a m r e h t r o t i m i l t n e r r u c , e g a t l o v 9d g l f - r e d n u o t e s n o p s e r n i e t a t s w o l - e v i t c a n a o t n i s e o g t u p t u o n i a r d - n e p o s i h t . t u p t u o d g a l f t l u a f . s n o i t i d n o c n w o d t u h s l a m r e h t r o t i m i l t n e r r u c , e g a t l o v 0 1d n e h g i h - e v i t c a h t o b . t u p n i c i g o l l o r t n o c r e v i r d h c t i w s t e f s o m b l e n n a h c e h t s i n i p s i h t . t u p n i d e l b a n e . e l b a l i a v a e r a s e c i v e d c i g o l ) x i f f u s 2 - ( w o l - e v i t c a d n a ) x i f f u s 1 - ( 1 1d t u o . s e t a t s f f o d n a n o o t n i d a o l e h t s e v i r d n i p t u p t u o e h t . ) e c r u o s t e f s o m ( t u p t u o h c t i w s d - l e n n a h c 2 1d n g . r e h t e g o t 6 d n a 4 s n i p h t o b t c e n n o c . c i e h t f o y r t i u c r i c l a n r e t n i e h t r o f n r u t e r y l p p u s r e w o p . d n u o r g 3 1b / a n i . n o i t c e n n o c n i a r d t e f s o m g n i h c t i w s e h t s i s i h t . e g a t l o v t u p n i y l p p u s r e w o p e v i t i s o p b d n a a l e n n a h c . t i u c r i c p m u p - e g r a h c e h t d n a c i g o l e h t r o f t u p n i e g a t l o v y l p p u s b l e n n a h c d n a a l e n n a h c e h t s i t i 4 1b t u o . s e t a t s f f o d n a n o o t n i d a o l e h t s e v i r d n i p t u p t u o e h t . ) e c r u o s t e f s o m ( t u p t u o h c t i w s b - l e n n a h c 5 1b n e h g i h - e v i t c a h t o b . t u p n i c i g o l l o r t n o c r e v i r d h c t i w s t e f s o m b - l e n n a h c e h t s i n i p s i h t . t u p n i b e l b a n e . e l b a l i a v a e r a s e c i v e d c i g o l ) x i f f u s 2 - ( w o l - e v i t c a d n a ) x i f f u s 1 - ( 6 1b g l f - r e d n u o t e s n o p s e r n i e t a t s w o l - e v i t c a n a o t n i s e o g t u p t u o n i a r d - n e p o s i h t . t u p t u o b g a l f t l u a f . s n o i t i d n o c n w o d t u h s l a m r e h t r o t i m i l t n e r r u c , e g a t l o v 1 0 t 7 2 / 4 2 5 2 r e b m u n n i pc i g o l e l b a n ee c n a t s i s e r n o l a c i p y te g n a r e r u t a r e p m e te g a k c a p - s n i p m w b 1 - 4 2 5 2 p m ih g i h e v i t c am 0 0 1 ? c 5 8 + o t c 0 4 o s - 6 1 m w b 2 - 4 2 5 2 p m iw o l e v i t c am 0 0 1 ? c 5 8 + o t c 0 4 o s - 6 1 n b 1 - 4 2 5 2 p m ih g i h e v i t c am 0 0 1 ? c 5 8 + o t c 0 4 p i d - 6 1 n b 2 - 4 2 5 2 p m iw o l e v i t c am 0 0 1 ? c 5 8 + o t c 0 4 p i d - 6 1 m w b 1 - 7 2 5 2 p m ih g i h e v i t c am 0 0 2 ? c 5 8 + o t c 0 4 o s - 6 1 m w b 2 - 7 2 5 2 p m iw o l e v i t c am 0 0 2 ? c 5 8 + o t c 0 4 o s - 6 1 n b 1 - 7 2 5 2 p m ih g i h e v i t c am 0 0 2 ? c 5 8 + o t c 0 4 p i d - 6 1 n b 2 - 7 2 5 2 p m iw o l e v i t c am 0 0 2 ? c 5 8 + o t c 0 4 p i d - 6 1 2 0 t 7 2 / 4 2 5 2
imp252 imp252 4/2 4/2 7 7 ?2000 imp, inc. usb high-side power switches 3 electrical characteristics absolute maximum ratings supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . +8.0v fault flag voltage . . . . . . . . . . . . . . . . . . . . . . +8.0v fault flag current . . . . . . . . . . . . . . . . . . . . . . 50ma output voltage . . . . . . . . . . . . . . . . . . . . . . . . . +8.0v output current . . . . . . . . . . . . . . . . . . . . . . . . . internally limited enable input . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3v to 12v storage temperature . . . . . . . . . . . . . . . . . . . . . 65 c to +150 c lead temperature (soldering, 5 sec.) . . . . . . . 260 c package thermal resistance so ( ja ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 c/w dip( ja ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 c/w note: all voltages are referenced to gnd. these are stress ratings only and functional operation is not implied. exposure to absolute maximum ratings for prolonged time periods may affect device reliability. parameter symbol conditionsmin typ max units supply voltage range v in t a = 40 c to +85 c 2.7 5.5 v operating temperature range t a 40 85 c supply current i in off switch off, no load 0.75 10 a switch off v enoff 0.8v, v enon 2.4v imp2524/27-1 v enon 0.8v, v enoff 2.4v imp2524/27-2 supply current i in on switch on, no load 110 320 a switch on v enoff 0.8v, v enon 2.4v imp2524/27-1 v enon 0.8v, v enoff 2.4v imp2524/27-2 enable input threshold v enh low to high ( 0 to 1 ) enable voltage, note 1 2.1 2.4 v v enl high to low ( 1 to 0 ) enable voltage, note 1 0.8 1.9 enable input current i en v en = 2.4v 0.01 1 a v en = 0.8v 0.01 1 enable input capacitance c en 1pf switch on resistance r on imp2524: i out = 500ma each switch 0.10 0.14 ? imp2527: i out = 500ma each switch 0.20 0.30 continuous load current i l each output 0.5 a output turn-on delay t don r l = 10 ? each output 0.25 ms output turn-on rise time t ron r l = 10 ? each output 1 ms output turn-off delay t doff r l = 10 ? each output 1 20 s output turn-off fall time t foff r l = 10 ? each output 1 20 s output leakage current i off 10 a short-circuit current limit i sc 0.50 0.75 1.25 a overtemperature shutdown t j increasing 135 c threshold t j decreasing 125 error flag output resistance r flag v in = 5v, i l = 10ma 10 ? v in = 3.3v, i l = 10ma 15 error flag output current i flag v flag = 5v 0.01 1 a uvlo threshold v uvlo v in increasing 2.5 v v in decreasing 2.3 unless otherwise noted, v in = 5v and t a = 25?. notes 1. switch off is v en 0.8v and switch on is v en 2.4v for the imp2524/27-1. switch off is v en 2.4v and switch on is v en 0.8v for the imp2524/27-2. the enable input has approximately 200mv of hysteresis.
d1 n d e ea eb e1 c 0 15 a e b1 b a2 l a1 plastic dip (16-pin).eps plastic dip (16-pin) %h % b 8 c 16-pin (so).eps so (16-pin) s e h c n is r e t e m i l l i m n i mx a mn i mx a m * ) n i p - 6 1 ( p i d c i t s a l p a 0 0 2 . 0 8 0 . 5 1 a5 1 0 . 0 8 3 . 0 2 a5 2 1 . 05 7 1 . 08 1 . 35 4 . 4 b6 1 0 . 02 2 0 . 01 4 . 06 5 . 0 1 b5 4 0 . 05 6 0 . 04 1 . 15 6 . 1 c8 0 0 . 02 1 0 . 00 2 . 00 3 . 0 d5 4 7 . 05 6 7 . 02 9 . 8 13 4 . 9 1 1 d5 0 0 . 00 8 0 . 03 1 . 03 0 . 2 e0 0 3 . 05 2 3 . 02 6 . 76 2 . 8 1 e0 4 2 . 00 1 3 . 00 1 . 67 8 . 7 e0 0 1 . 0 4 5 . 2 a e0 0 3 . 0 2 6 . 7 b e 0 0 4 . 0 6 1 . 0 1 l5 1 1 . 00 5 1 . 02 9 . 21 8 . 3 * * ) n i p - 6 1 ( o s a6 2 9 . 03 4 0 1 . 05 3 . 25 6 . 2 1 a0 4 0 0 . 08 1 1 0 . 00 1 . 00 3 . 0 b3 1 0 . 00 2 0 . 03 3 . 01 5 . 0 c1 9 0 0 . 05 2 1 0 . 03 2 . 02 3 . 0 d7 7 9 3 . 03 3 1 4 . 00 1 . 0 10 5 . 0 1 e4 1 9 2 . 02 6 6 2 . 00 4 . 70 6 . 7 ec s b 0 5 0 . 0c s b 7 2 . 1 h4 9 3 . 09 1 4 . 00 0 . 0 15 6 . 0 1 l6 1 0 . 00 5 0 . 00 4 . 07 2 . 1 b a 8 5 0 - o m g n i w a r d c e d e j * a a 3 1 0 - s m g n i w a r d c e d e j * * 3 t a . 3 0 t _ 6 2 / 4 2 5 2 package dimensions imp252 imp252 4/2 4/2 7 7 4 408-432-9100/www.impweb.com ?2000 imp, inc. 6
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