View AAT4290_7307708.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

smartswitch ? AAT4290/91 i/o expander load switches with serial control 4290.2006.03.1.2 1 general description the AAT4290 and aat4291 smartswitch products are members of analogictech?s application specific power mosfet? (aspm?) product family. the AAT4290 and aat4291 are five and three p-channel mosfets, respectively, config- ured for use as a microprocessor i/o expander. having independent drain outputs and a common source input, they operate with an input voltage ranging from 1.8v to 5.5v, making them ideal for 2.5v, 3.3v, or 5v systems, as well as systems pow- ered by lithium-ion/polymer batteries. each switch features a 500ns turn-on time. the switch states are controlled by analogictech?s simple serial control? (s 2 cwire?) interface which permits ease of control and efficiency of size. the quiescent supply current is very low, typically 5a. in shut- down mode, the supply current is reduced to less than 1a. the AAT4290 and aat4291 are offered in a pb- free, 8-pin sc70jw package specified over the -40c to +85c temperature range. features ? 1.8v to 5.5v input voltage range ? 5 or 3 independent load switches ?s 2 cwire interface ? 1.1 ? r ds(on) per switch ? low quiescent current ? 5a ? 0.1a in shutdown ? -40c to +85c temperature range ? 8-pin sc70jw package applications ? cell phones ? i/o expansion ? multiple low power switching ? personal communication devices ? portable electronic devices typical application out1 AAT4290 out2 out3 out4 out5 in en/set gnd c out1 c out2 c out3 c out4 c out5 c in 1 f 0.1 f 0.1 f 0.1 f 0.1 f 0.1 f input en/set gnd out1 out2 out3 out4 out5 gnd
pin descriptions pin configuration AAT4290 aat4291 sc70jw-8 sc70jw-8 (top view) (top view) n/c n/c en/set out3 out2 out1 gnd in 1 2 3 45 6 7 8 out2 out1 en/set out3 out4 out5 gnd in 1 2 3 45 6 7 8 pin # AAT4290 aat4291 symbol function 1 1 in input power supply is connected to the p-channel mosfet sources. connect a 1f capacitor from in to gnd. 2 7 out2 p-channel mosfet drain. 3 6 out1 p-channel mosfet drain. 4 4 en/set input control pin using s 2 cwire serial interface. the device records rising edges of the clock and decodes them into 32 states (8 states for aat4291) which controls the on/off states of the mosfets. see table 1 and table 2 for out- put settings. 5 5 gnd ground connection. 6 n/a out5 p-channel mosfet drain. 7 n/a out4 p-channel mosfet drain. 8 8 out3 p-channel mosfet drain. n/a 2, 3 n/c not connected. AAT4290/91 i/o expander load switches with serial control 2 4290.2006.03.1.2
absolute maximum ratings 1 thermal characteristics symbol description value units ja thermal resistance 3 225 c/w p d maximum power dissipation (t a = 25c) 4 440 mw symbol description value units v in in to gnd -0.3 to 6.0 v v out out to gnd -0.3 to v in + 0.3 v v en/set en/set to gnd -0.3 to 6.0 v i max maximum continuous switch current 250 ma t storage storage temperature range -65 to 150 c v esd esd rating - hbm 2 4000 v AAT4290/91 i/o expander load switches with serial control 4290.2006.03.1.2 3 1. stresses above those listed in absolute maximum ratings may cause permanent damage to the device. functional operation at c ondi- tions other than the operating conditions specified is not implied. only one absolute maximum rating should be applied at any one time. 2. human body model is a 100pf capacitor discharged through a 1.5k ? resistor to each pin. 3. mounted on the board. 4. derate 4.4mw/c above 25c.
electrical characteristics v in = 5.0v, t a = -40c to +85c, unless otherwise noted. typical values are t a = 25c. symbol description conditions min typ max units v in operation voltage 1.8 5.5 v i q quiescent current v in = 5.5v, en/set = v in , i out = 0, 4.5 8 a all switches on i q(off) off supply current en/set = 0, v in = 5.5v, v out open 1 a i sd(off) off switch current en/set = 0, v in = 5.5v, v outn = 0 0.1 1 a v uvlo under-voltage lockout v in falling 1.2 v v uvlo(hys) under-voltage lockout hysteresis 250 mv v in = 1.8v, t a = 25c 2.5 3.8 r ds(on) on resistance v in = 3.0v, t a = 25c 1.5 2.2 ? v in = 4.2v, t a = 25c 1.2 1.8 v in = 5.0v, t a = 25c 1.1 1.7 t crds on resistance temperature 2800 ppmc coefficient AAT4290-1 and aat4291-1 t d(on) output turn-on delay time v in = 5v, r load = 500 ? , c out = 0.1f 40 ns t r turn-on rise time v in = 5v, r load = 500 ? , c out = 0.1f 270 ns t d(off) turn-off delay time v in = 5v, r load = 500 ? 40 ns en/set v en(l) enable threshold low v in = 1.8v 0.4 v v en(h) enable threshold high v in = 5.5v 1.6 v t lo en/set low time v en/set < 0.4v 100 ns t hi minimum en/set high time v in 2.5v 500 ns v in > 2.5v 250 t o en/set off timeout 2.6 4.0 s t lat en/set latch timeout 2.6 4.0 s i sink en/set input leakage v en/set = 5.5v 0.01 1 a AAT4290/91 i/o expander load switches with serial control 4 4290.2006.03.1.2 1. the AAT4290/91 is guaranteed to meet performance specifications over the -40c to +85c operating temperature range and is assured by design, characterization, and correlation with statistical process controls.
AAT4290/91 i/o expander load switches with serial control 4290.2006.03.1.2 5 typical characteristics unless otherwise noted, v in = 5v, c in = 1f, c outx = 0.1f, t a = 25c. r ds(on) vs. temperature 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 -40 -20 0 20 40 60 80 100 temperature ( c) r ds(on) ( ? ) v in = 5.0v i o1-5 = 100ma r ds3 r ds4 r ds5 r ds1 r ds2 r ds(on) vs. temperature temperature ( c) r ds(on) ( ? ) -40 -20 0 20 40 60 80 100 0.7 0.8 0.9 1 1.1 1.2 1.3 v in = 5.0v i o1-5 = 50ma r ds1 r ds2 r ds3 r ds4 r ds5 r ds(on) vs. input voltage 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 input voltage (v) r ds(on) ( ? ) 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 i o1-5 = 100ma r ds1 r ds2 r ds5 r ds3 r ds4 v ih and v il vs. input voltage 1.5 2.5 2 3.5 3 4.5 4 5.5 5 input voltage (v) v ih and v il (v) v il v ih 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 quiescent current vs. input voltage 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 input voltage (v) i q ( a) 1.5 2 2.5 3 3.5 4 4.5 5 5.5 quiescent current vs. temperature -40 -20 0 20 40 60 80 100 temperature ( c) i q ( a) 2 2.5 3 3.5 4 4.5 5 5.5 6 v in = 5.0v v in = 3.3v
AAT4290/91 i/o expander load switches with serial control 6 4290.2006.03.1.2 typical characteristics unless otherwise noted, v in = 5v, c in = 1f, c outx = 0.1f, t a = 25c. turn-on characteristic (v in = 5v; r l1 = r l2 = 50 ? ; c o1 = c o2 = 0.1 f) time (2 s/div) en/set (5v/div) v o1 (5v/div) v o2 (5v/div) turn-on characteristic (v in = 5v; r l1 = r l2 = 50 ? ; c o1 = c o2 = 0.1 f) time (2 s/div) en/set (5v/div) v o1 (5v/div) v o2 (5v/div) turn-on characteristic (v in = 5v, r l1 = r l2 = 50 ? ; c o1 = c o2 = 0.1 f) time (2 s/div) en/set (5v/div) v o1 (5v/div) v o2 (5v/div) en/set timeout vs. input voltage 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) timeout ( s) 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 off timeout t o latch timeout t lat en/set off timeout vs. temperature -40 -20 0 20 40 60 80 100 temperature ( c) off timeout, t o ( s) 2.2 2.4 2.6 2.8 3 3.2 3.4 v in = 3.3v v in = 5.0v en/set latch timeout vs. temperature -40 -20 0 20 40 60 80 100 temperature ( c) latch timeout, t lat ( s) 2.2 2.4 2.6 2.8 3 3.2 3.4 v in = 5.0v v in = 3.3v
typical characteristics unless otherwise noted, v in = 5v, c in = 1f, c outx = 0.1f, t a = 25c. time (5 s/div) en/set (5v/div) v o1 (5v/div) v o2 (100mv/div, ac coupled) turn-on transient characteristic (v in = 5v; r l1 = r l2 = 50 ? ) transition of outputs (v in = 5v; r l1 = r l2 = 50 ? ; c o1 = c o2 = 0.1 f) time (2 s/div) en/set (5v/div) v o1 (5v/div) v o2 (5v/div) turn-off characteristic (v in = 5v; r l1 = r l2 = 50 ? ; c o1 = c o2 = 0.1 f) time (2 s/div) en/set (5v/div) v o1 (5v/div) v o2 (5v/div) turn-on characteristic (v in = 5v; r l1 = r l2 = 50 ? ; c o1 = c o2 = 0.1 f) time (2 s/div) en/set (5v/div) v o1 (5v/div) v o2 (5v/div) AAT4290/91 i/o expander load switches with serial control 4290.2006.03.1.2 7
AAT4290/91 i/o expander load switches with serial control 8 4290.2006.03.1.2 functional block diagram gnd control logic and level shift s 2 cwire interface *AAT4290 only in out1 out2 out3 out4* out5* en/set uvlo rom functional description the AAT4290 consists of five p-channel mosfet power switches designed for i/o expansion appli- cations. the aat4291 has all of the features offered in the AAT4290, but integrates three switches instead of five. it operates with input volt- ages ranging from 1.8v to 5.5v which, along with its extremely low operating current, makes it ideal for battery-powered applications. in cases where the input voltage drops below 1.8v, the AAT4290 mosfets are protected from entering the linear region of operation by automatically shutting down. in addition, the ttl-compatible en/set pin makes the AAT4290 an ideal level-shifted load switch. an optional slew rate controlling feature eliminates in- rush current when a mosfet is turned on, allow- ing the AAT4290 to be implemented with a small input capacitor or no capacitor at all, while main- taining isolation between channels. during slew- ing, the current ramps linearly until it reaches the level required for the output load condition. the proprietary control method works by careful control and monitoring of the mosfet gate voltage. when the device is switched on, the gate voltage is quickly increased to the threshold level of the mosfet. once at this level, the current begins to slew as the gate voltage is slowly increased until the mosfet becomes fully enhanced. once it has reached this point, the gate is quickly increased to the full input voltage and r ds(on) is minimized. the on/off state of the five mosfet switches are controlled by the en/set serial data input. an internal control counter is clocked on the rising edge of the en/set pin and is decoded into the 32 possible states of the mosfet (see table 1). the counter rolls over after 32 clocks and the table repeats. the counter can be clocked at speeds up to 1mhz, but the count value is not latched until clocking has stopped and the en/set pin has remained high for approximately 2.6s. the first rising edge of en/set enables the AAT4290 and is counted as the first clock. to change states, addi- tional low going clock pulses may be asserted on the en/set pin with the resulting change taking
effect after the en/set pin has remained in a high state for t lat . the AAT4290 is disabled after the en/set pin has transitioned and remained in a logic low state for t o . table 1: AAT4290 output settings. with the exception of three channel power switch- es, the aat4291 has a similar function to the AAT4290. the on/off state of the three mos- fet switches are controlled by the en/set serial data input. an internal control counter is clocked on the rising edge of the en/set pin and is decod- ed into the eight possible states of the mosfet (see table 2). the counter rolls over after eight clocks and the table repeats. table 2: aat4291 output settings. applications information thermal considerations the AAT4290 is designed to deliver continuous output load currents. due to its high level of inte- gration, care must be taken in designing for higher load conditions. if greater loads are required, out- puts can be tied together to deliver higher power to a given load. at 25c ambient, the AAT4290 is capable of dissi- pating 440mw of power, or 1.14a at 5.0v, for an average current of 228ma per output. at 85c ambient, the AAT4290 is capable of dissi- pating 178mw of power, or 0.72a at 5.0v, for an average current of 145ma per output. clock out3 out2 out1 1 ononon 2ononoff 3onoffon 4 on off off 5 off on on 6 off on off 7 off off on 8 off off off clock out5 out4 out3 out2 out1 1ononononon 2ononononoff 3onononoffon 4 on on on off off 5 on on off on on 6 on on off on off 7 on on off off on 8 on on off off off 9 on off on on on 10 on off on on off 11 on off on off on 12 on off on off off 13 on off off on on 14 on off off on off 15 on off off off on 16 on off off off off 17 off on on on on 18 off on on on off 19 off on on off on 20 off on on off off 21 off on off on on 22 off on off on off 23 off on off off on 24 off on off off off 25 off off on on on 26 off off on on off 27 off off on off on 28 off off on off off 29 off off off on on 30 off off off on off 31 off off off off on 32 off off off off off AAT4290/91 i/o expander load switches with serial control 4290.2006.03.1.2 9
AAT4290/91 i/o expander load switches with serial control 10 4290.2006.03.1.2 output sequencing if output sequencing is not necessary, then all of the outputs will be switched on simultaneously on the first rising edge of the en/set pin. however, if out- put sequencing is desired, then a series of pulses on the en/set pin will accomplish this. each time a new group of pulses is asserted on en/set, the AAT4290/91 internal control is reset. for example, to sequence the outputs in order from out5 to out1, five clocks bursts are input on the en/set pin. from table 1, the first burst of 16 clocks turns on out5. a following burst of 8 clocks (as the counter resets) will add out4, followed by 4 clocks to add out3, 2 clocks to add out2, and 1 clock to add out1. likewise, the outputs can be turned off in any order by adding more clock bursts. timing diagram t hi t lo t lat t d(on) t o t r t d(off) outn en/set
applications circuits figure 1: gpio i/o expander (condense five gpio control lines to one). figure 2: rgb led control (eliminates three discrete mosfet switches). v battery 10 f 1 f 10 f r r r g r b b r g on/off clock vin vout c+ c- gnd gnd in out1 out2 out3 en/set shdn rgb led aat3110ijs-5.0 sc70jw-8: 2x2mm aat4291ijs sc70jw-8: 2x2mm function 1 function 2 function 3 function 4 function 5 system controller gpio 1 v supply 1.8 to 5.5v gpio 2 gpio 3 gpio 4 gpio 5 en 1 en 2 en 3 en 4 en 5 gpio 2 to gpio 5 are now free for other uses en/set in out1 out2 out3 out4 out5 AAT4290 AAT4290/91 i/o expander load switches with serial control 4290.2006.03.1.2 11
ordering information package information sc70jw-8 all dimensions in millimeters. 0.225 0.075 0.45 0.10 0.05 0.05 2.10 0.30 2.00 0.20 7 3 4 4 1.75 0.10 0.85 0.15 0.15 0.05 1.10 max 0.100 2.20 0.20 0.048ref 0.50 bsc 0.50 bsc 0.50 bsc all analogictech products are offered in pb-free packaging. the term ?pb-free? means semiconductor products that are in compliance with current rohs standards, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. for more information, please visit our website at http://www.analogictech.com/pbfree. package marking 1 part number (tape and reel) 2 sc70jw-8 hsxyy AAT4290ijs-1-t1 sc70jw-8 hcxyy aat4291ijs-1-t1 AAT4290/91 i/o expander load switches with serial control 12 4290.2006.03.1.2 advanced analogic technologies, inc. 830 e. arques avenue, sunnyvale, ca 94085 phone (408) 737-4600 fax (408) 737-4611 1. xyy = assembly and date code. 2. sample stock is generally held on part numbers listed in bold . ? advanced analogic technologies, inc. analogictech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an analogictech pr oduct. no circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. analogictech reserves the right to make changes to their products or specifi cations or to discontinue any product or service without notice. customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information b eing relied on is current and complete. all products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warran ty, patent infringement, and limitation of liability. analogictech warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with anal ogictech?s standard warranty. testing and other quality con- trol techniques are utilized to the extent analogictech deems necessary to support this warranty. specific testing of all param eters of each device is not necessarily performed.

▲Up To Search▲

Price & Availability of AAT4290

	To Download AAT4290 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .