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? semiconductor components industries, llc, 2013 october, 2013 ? rev. 15 1 publication order number: cat3200/d cat3200, cat3200-5 low noise regulated charge pump dc-dc converter description the cat3200 and cat3200 ? 5 are switched capacitor boost converters that deliver a low noise, regulated output voltage. the cat3200 ? 5 gives a fixed regulated 5 v output. the cat3200 has an adjustable output using external resistors. the constant frequency 2 mhz charge pump allows small 1 f ceramic capacitors to be used. maximum output loads of up to 100 ma can be supported over a wide range of input supply voltages (2.7 v to 4.5 v) making the device ideal for battery ? powered applications. a shutdown control input allows the device to be placed in power ? down mode, reducing the supply current to less than 1 a. in the event of short circuit or overload conditions, the device is fully protected by both foldback current limiting and thermal overload detection. in addition, a soft start, slew rate control circuit limits inrush current during power ? up. the cat3200 ? 5 is available in a 6 ? lead, 1 mm max thin sot23 package. the cat3200 is available in an 8 ? lead msop package. features ? constant high frequency (2 mhz) operation ? 100 ma output current ? regulated output voltage (5 v fixed cat3200 ? 5, adjustable cat3200) ? low quiescent current (1.7 ma typ.) ? input voltage operation down to 2.7 v ? soft start, slew rate control ? thermal overload shutdown protection ? low value external capacitors (1 f) ? foldback current overload protection ? shutdown current less than 1 a ? cat3200 ? 5 in low profile (1 mm thin) 6 ? lead tsot ? 23 package ? cat3200 in msop ? 8 package ? these devices are pb ? free, halogen free/bfr free and are rohs compliant applications ? 3 v to 5 v boost conversion ? white led driver ? usb on ? the ? go 5 v supply ? local 5 v supply from lower rail ? battery backup systems ? handheld portable devices http://onsemi.com pin configurations msop ? 8 z suffix case 846ad tsot ? 23 td suffix case 419af (top views) cat3200 cat3200 ? 5 cpos in cneg shdn gnd out out fb shdn sgnd cpos in cneg pgnd 1 1 msop sot23 1 1 * nipdau lead finish device package shipping ordering information cat3200tdi ? t3 tsot23 ? 6 (pb ? free) 3,000 / tape & reel cat3200tdi ? gt3 tsot23 ? 6* (pb ? free) cat3200zi ? t3 msop ? 8 (pb ? free) 3,000 / tape & reel cat3200zi ? gt3 msop ? 8* (pb ? free) 3,000 / tape & reel 3,000 / tape & reel
cat3200, cat3200 ? 5 http://onsemi.com 2 abme = cat3200zi-t3 abru = cat3200zi-gt3 ln = cat3200tdi-t3 va = cat3200tdi-gt3 y = production year (last digit) m = production month (1-9, o, n, d) r = production revision marking diagrams lnym vaym abme ymr abru ymr typical application figure 1. typical application ? 5 v output cat3200 ? 5 gnd + ? 3.3 v cat3200 gnd + ? 3.3 v 5 v 100 ma fb 100 ma 1 f 1 f on off in 1 f out v in shdn cneg cpos v out 1 f v in on off 1 f in out 1 f cneg cpos v out r 2 r 1 shdn v out = 5 v i out 50 ma, for v in 2.8 v i out 90 ma, for v in 3 v v out 1.27 v 1 r 1 r 2 figure 2. typical application ? adjustable output table 1. pin descriptions designation description out regulated output voltage. gnd ground reference for all voltages. shdn shutdown control logic input (active low) cneg negative connection for the flying capacitor. in input power supply. cpos positive connection for the flying capacitor. fb feedback to set the output voltage. pgnd power ground. sgnd signal ground. table 2. absolute maximum ratings parameters ratings units v in , v out , shdn , c neg , c pos voltage ? 0.6 to +6.0 v v out short circuit duration indefinite output current 200 ma esd protection (hbm) 2000 v junction temperature 150 c storage temperature range ? 65 to +160 c lead soldering temperature (10 sec) 300 c power dissipation (sot23 ? 6) 0.3 w power dissipation (8 ? msop) 0.5 w stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability.
cat3200, cat3200 ? 5 http://onsemi.com 3 table 3. recommended operating conditions parameters ratings units v in 2.7 to 4.5 v c in , c out , c fly 1 f i load 0 to 100 ma ambient temperature range ? 40 to +85 c table 4. electrical specifications (recommended operating conditions unless otherwise specified. c in , c out , c fly are 1 f ceramic capacitors and v in is set to 3.6 v.) symbol parameter conditions min typ max units v out regulated output i load 40 ma, v in 2.7 v i load 100 ma, v in 3.1 v 4.8 5.0 5.2 v v line line regulation 3.1 v v in 4.5 v, i load = 50 ma 6 mv v load load regulation i load = 10 ma to 100 ma, v in = 3.6 v 20 mv f osc switching frequency 1.3 2.0 2.6 mhz v r output ripple voltage i load = 100 ma cat3200 ? 5 only 30 mvp ? p efficiency i load = 50 ma, v in = 3 v, cat3200 ? 5 80 % i gnd ground current i load = 0 ma, shdn = v in 1.6 4 ma i shdn shutdown input current i load = 0 ma, shdn = 0 v 1 a v fb fb voltage cat3200 only 1.22 1.27 1.32 v i fb fb input current cat3200 only ? 50 50 na r ol open ? loop resistance i load = 100 ma, v in = 3 v (note 1) 10 t on v out turn ? on time (10% to 90%) i load = 0 ma, v in = 3 v 0.5 ms v ihshdn high detect shutdown threshold 0.8 1.3 v v ilshdn low detect shutdown threshold 0.4 v i rout reverse leakage into out pin v out = 5 v, shutdown mode (note 2) 15 30 a i sc short ? circuit output v out = 0 v 80 ma t sd thermal shutdown 160 c t hyst thermal hysteresis 20 c 1. r ol = (2v in ? v out )/i out 2. in the event of a controlled shutdown, the output will be isolated from the input, but will remain connected to the internal resistor feedback network. this will cause a small level of reverse current to flow back into the device to ground.
cat3200, cat3200 ? 5 http://onsemi.com 4 typical performance characteristics (cat3200 ? 5) (t amb = 25 c, c in = c out = c fly = 1 f, v in = 3.3 v unless specified otherwise.) figure 3. shutdown input threshold vs. supply voltage figure 4. ground current vs. supply voltage (no load) input voltage (v) input voltage (v) 4.5 4.2 3.9 3.6 3.3 3.0 2.7 0.4 0.5 0.6 0.7 0.8 1.0 1.1 1.2 4.5 4.2 3.9 3.6 3.3 3.0 2.7 1.2 1.4 1.6 1.8 2.0 2.2 figure 5. line regulation figure 6. load regulation input voltage (v) load current (ma) 4.5 4.2 3.9 3.6 3.3 3.0 2.7 4.8 4.9 5.1 5.2 150 100 50 0 4.8 4.9 5.0 5.1 5.2 figure 7. oscillator frequency vs. supply voltage figure 8. efficiency vs. load current input voltage (v) load current (ma) 4.5 4.2 3.9 3.6 3.3 3.0 2.7 1.6 1.8 2.0 2.2 2.4 2.6 100 10 1 30 40 50 60 70 80 90 100 shutdown threshold (v) ground current (ma) output voltage (v) output voltage (v) oscillator frequency (mhz) efficiency (%) 0.9 5.0 20 ma load 100 ma load vin = 3.2 v vin = 3.0 v vin = 2.7 v vin = 3.2 v vin = 2.7 v vin = 3.7 v vin = 4.5 v
cat3200, cat3200 ? 5 http://onsemi.com 5 typical performance characteristics (cat3200 ? 5) (t amb = 25 c, c in = c out = c fly = 1 f, v in = 3.3 v unless specified otherwise.) figure 9. soft start power up (90 ma load, 3.3 v input) figure 10. load step response (3.3 v input) figure 11. output ripple (100 ma load, 3.3 v input) figure 12. short circuit current vs. supply voltage input voltage (v) 4.5 4.2 3.9 3.6 3.3 3.0 2.7 0 50 100 150 200 250 figure 13. output voltage change vs. temperature figure 14. oscillator frequency change vs. temperature temperature ( c) temperature ( c) 80 60 100 40 20 0 ? 20 ? 40 ? 2 ? 1 0 1 2 80 60 40 100 20 0 ? 20 ? 40 ? 4 ? 2 0 2 4 current limit (ma) output voltage change (%) frequency change (%) 10 ma load
cat3200, cat3200 ? 5 http://onsemi.com 6 block diagram figure 15. cat3200 adjustable output figure 16. cat3200 ? 5 5 v fixed output + en 2 mhz voltage doubler 1.25 v sgnd in 5 v / 100 ma out pgnd fb + en 2 mhz voltage doubler 300 k 100 k 1.25 v gnd in 5 v 100 ma out cneg cpos 2v in ? shdn ? shdn cneg cpos 2v in pin functions in is the power supply. during normal operation the device draws a supply current which is almost constant. a very brief interval of non ? conduction will occur at the switching frequency. the duration of the non ? conduction interval is set by the internal non ? overlapping ?break ? before ? make? timing. in should be bypassed with a 1 f to 4.7 f low esr (equivalent series resistance) ceramic capacitor for filtering, a low esr ceramic bypass capacitor (1 f) in close proximity to the in pin prevents noise from being injected back into the power supply. shdn is the logic control input (active low) that places the device into shutdown mode. the internal logic is cmos and the pin does not use an internal pull ? down resistor. the shdn pin should not be allowed to float. cpos, cneg are the positive and negative connections respectively for the charge pump flying capacitor. a low esr ceramic capacitor (1 f) should be connected between these pins. during initial power ? up it may be possible for the capacitor to experience a voltage reversal and for this reason, avoid using a polarized (tantalum or aluminum) flying capacitor. out is the regulated output voltage to power the load. during normal operation, the device will deliver a train of current pulses to the pin at a frequency of 2 mhz. adequate filtering on the pin can typically be achieved through the use a low esr ceramic bypass capacitor (1 f to 4.7 f) in close proximity to the out pin. the esr of the output capacitor will directly influence the output ripple voltage. when the shutdown mode is entered, the output is immediately isolated from the input supply, however, the output will remain connected to the internal feedback resistor network (400 k ). the feedback network will result in a reverse current of 10 a to 20 a to flow back through the device to ground. whenever the device is taken out of shutdown mode, the output voltage will experience a slew rate controlled power ? up. full operating voltage is typically achieved in less than 0.5 msec. gnd is the ground reference for all voltages on ca t3200 ? 5 devices. fb (cat3200 only) is the feedback input pin. an output divider should be connected from out to fb to program the output voltage. pgnd (cat3200 only). is the same as gnd for the cat3200 ? 5 except for the internal reference connection to sgnd. sgnd (cat3200 only) ground pin for the internal reference. the cneg connection is switched to this pin during the normal charge pump operation.
cat3200, cat3200 ? 5 http://onsemi.com 7 device operation the cat3200/cat3200 ? 5 use a switched capacitor charge pump to boost the voltage at in to a regulated output voltage. regulation is achieved by sensing the output voltage through an internal resistor divider (ca t3200 ? 5) and modulating the charge pump output current based on the error signal. a 2 ? phase non ? overlapping clock activates the charge pump switches. the flying capacitor is charged from the in voltage on the first phase of the clock. on the second phase of the clock it is stacked in seri es with the input voltage and connected to out. the charging and discharging the flying capacitor continues at a free running frequency of typically 2 mhz. in shutdown mode all circuitry is turned off and the cat3200/cat3200 ? 5 draw only leakage current from the v in supply. out is disconnected from in. the shdn pin is a cmos input with a threshold voltage of approximately 0.8 v. the cat3200/cat3200 ? 5 is in shutdown when a logic low is applied to the shdn pin. the shdn pin is a high impedance cmos input. shdn does not have an internal pull ? down resistor and should not be allowed to float and. it must always be driven with a valid logic level. short ? circuit and thermal protection the cat3200 and cat3200 ? 5 have built ? in short ? circuit current limiting and over temperature protection. during overload conditions, output current is limited to approximately 225 ma. at higher temperatures, or if the input voltage is high enough to cause excessive chip self heating, the thermal shutdown circuit shuts down the charge pump as the junction temperature exceeds approximately 160 c. once the junction temperature drops back to approximately 140 c, the charge pump is enabled. the cat3200 and cat3200 ? 5 will cycle in and out of thermal shutdown indefinitely without latch ? up or damage until a short ? circuit on out is removed. programming the cat3200 output voltage (fb pin) the cat3200 ? 5 version has an internal resistive divider to program the output voltage. the programmable ca t3200 may be set to an arbitrary voltage via an external resistive divider. since it employs a voltage doubling charge pump, it is not possible to achieve output voltages greater than twice the available input voltage. figure 17 shows the required voltage divider connection. the voltage divider ratio is given by the formula: r1 r2 v out 1.27 v 1 typical values for total voltage divider resistance can range from several k s up to 1 m . figure 17. programming the adjustable cat3200 out fb 1.27 v r1 r2 8 7 4 5 cpos cneg in 3 2 6 1 shdn pgnd sgnd c out v out 1 r1 r2
cat3200, cat3200 ? 5 http://onsemi.com 8 application information ceramic capacitors ceramic capacitors of different dielectric materials lose their capacitance with higher temperature and voltage at different rates. for example, a capacitor made of x5r or x7r material will retain most of its capacitance from ? 40 c to 85 c whereas a z5u or y5v style capacitor will lose considerable capacitance over that range. z5u and y5v capacitors may also have voltage coefficient causing them to lose 60% or more of their capacitance when the rated voltage is applied. when comparing dif ferent capacitors it is often useful consider the amount of achievable capacitance for a given case size rather than discussing the specified capacitance value. for example, over rated voltage and temperature conditions, a 1 f, 10 v, y5v ceramic capacitor in an 0603 case may not provide any more capacitance than a 0.22 f, 10 v, x7r available in the same 0603 case. for many cat3200/ cat3200 ? 5 applications these capacitors can be considered roughly equivalent. the capacitor manufacturer?s data sheet should be consulted to determine what value of capacitor is needed to ensure the desired capacitance at all temperatures and voltages. below is a list of ceramic capacitor manufacturers and how to contact them: table 5. ceramic capacitor manufacturers capacitor manufacturer web phone murata www.murata.com 814.237.1431 avx/kemet www.avxcorp.com 843.448.9411 vishay www.vishay.com kemet www.kemet.com 408.986.0424 taiyo yuden www.t ? yuden.com 408.573.4150 thermal management for higher input voltages and maximum output current there can be substantial power dissipation in the cat3200/ cat3200 ? 5. if the junction temperature increases to 160 c, the thermal shutdown circuitry will automatically turn off the output. a good thermal connection to the pc board is recommended to reduce the chip temperature. connecting the gnd pin (pins 4/5 for cat3200, pin 2 for ca t3200 ? 5) to a ground plane, and maintaining a solid ground plane under the device reduces the overall thermal resistance. the overall junction to ambient thermal resistance ( ja ) for device power dissipation (p d ) consists primarily of two paths in series. the first path is the junction to the case ( jc ) which is defined by the package style, and the second path is case to ambient ( ca ) thermal resistance which is dependent on board layout. the final operating junction temperature for any set of conditions can be estimated by the following thermal equation: t junc = t amb + p d ( jc ) + p d ( ca ) t junc = t amb + p d ( ja ) the cat3200 in sot23 package, when mounted on printed circuit board with two square inches of copper allocated for ?heat spreading?, will result with an overall ja of less than 150 c/w. for a typical application operating from a 3.8 v input supply, the maximum power dissipation is 260 mw (100 ma x 3 v). this would result if a maximum junction temperature of: t junc = t amb + p d ( ja ) t junc = 85 c + 0.26 w (150 c/w) t junc = 85 c + 39 c = 124 c the use of multi ? layer board construction with power planes will further enhance the overall thermal performance. in the event of no dedicated copper area being used for heat spreading, a multi ? layer board will typically provide the cat3200 with an overall ja of 200 c/w. this level of thermal conduction would allow up to 200 mw be safely dissipated within the device.
cat3200, cat3200 ? 5 http://onsemi.com 9 typical applications figure 18. 3.3 v supply to 5 v figure 19. usb port to regulated 5 v power supply figure 20. lithium ? ion battery to 5 v white or blue led driver figure 21. white or blue led driver with led current control cat3200 ? 5 5 3 1 2 100 ma gnd cat3200 ? 5 5 3 1 2 gnd 5 3 1 2 in out sgnd 100 100 100 100 cat3200 ? 5 apply pwm waveform for adjustable brightness control 3 v to 4.4 v li ? ion battery t drive up to 5 leds 100 + 2 6 8 7 c+ c ? fb sgnd pgnd 82 82 82 82 82 cat3200 apply pwm waveform for adjustable brightness control 3 v to 4.4 v li ? ion battery t up to 6 leds + 1 f 46 in out 1 f 1 f 3.3 v 10% shdn 1 f v out 5 v 4% shdn 1 f 46 4 v v in 5 v in out 1 f v out 5 v 4% 1 f 1 f 46 c ? c+ 1 f shdn on off v shdn 1 f 5 4 in out 1 f 13 1 f shdn v shdn on off
cat3200, cat3200 ? 5 http://onsemi.com 10 package dimensions tsot ? 23, 6 lead case 419af ? 01 issue o e1 e a2 a1 e b d c a top view side view end view l1 l l2 notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec mo-193. symbol min nom max a a1 a2 b c d e e1 e l 0o 8o l1 l2 0.01 0.80 0.30 0.12 0.30 0.05 0.87 0.15 2.90 bsc 2.80 bsc 1.60 bsc 0.95 typ 0.40 0.60 ref 0.25 bsc 1.00 0.10 0.90 0.45 0.20 0.50
cat3200, cat3200 ? 5 http://onsemi.com 11 package dimensions msop 8, 3x3 case 846ad ? 01 issue o e1 e a2 a1 e b d c a top view side view end view l1 l2 l detail a detail a notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec mo-187. symbol min nom max a a1 a2 b c d e e1 e l 0o 6o l2 0.05 0.75 0.22 0.13 0.40 2.90 4.80 2.90 0.65 bsc 0.25 bsc 1.10 0.15 0.95 0.38 0.23 0.80 3.10 5.00 3.10 0.60 3.00 4.90 3.00 l1 0.95 ref 0.10 0.85
cat3200, cat3200 ? 5 http://onsemi.com 12 3. all packages are rohs ? compliant (lead ? free, halogen ? free). 4. the standard lead finish is nipdau. 5. for matte ? tin package option, please contact your nearest on semiconductor sales office. 6. for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. on semiconductor and are registered trademarks of semiconductor co mponents industries, llc (scillc). scillc owns the rights to a numb er of patents, trademarks, copyrights, trade secrets, and other intellectual property. a list ing of scillc?s product/patent coverage may be accessed at ww w.onsemi.com/site/pdf/patent ? marking.pdf. scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including without limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/ or specifications can and do vary in different applications and actual performance may vary over time. all operating parame ters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the right s of others. scillc products are not designed, intended, or a uthorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in whic h the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or us e scillc products for any such unintended or unauthorized appli cation, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unin tended or unauthorized use, even if such claim alleges that scil lc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyrig ht laws and is not for resale in any manner. publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5817 ? 1050 cat3200/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 toll free usa/canada fax : 303 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative

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