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tl499a wide-range power-supply controllers slvs029g ? january 1984 ? revised september 2001 1 post office box 655303 ? dallas, texas 75265 internal series-pass and step-up switching regulator output adjustable from 2.9 v to 30 v 1-v to 10-v input for switching regulator 4.5-v to 32-v input for series regulator externally controlled switching current no external rectifier required description the tl499a is an integrated circuit designed to provide a wide range of adjustable regulated supply voltages. the regulated output voltage can be varied from 2.9 v to 30 v by adjusting two external resistors. when the tl499a is ac-coupled to line power through a step-down transformer, it operates as a series dc voltage regulator to maintain the regulated output voltage. with the addition of a battery from 1.1 v to 10 v, an inductor, a filter capacitor, and two resistors, the tl499a operates as a step-up switching regulator during an ac-line failure. the adjustable regulated output voltage makes the tl499a useful for a wide range of applications. providing backup power during an ac-line failure makes the tl499a extremely useful in microprocessor memory applications. the tl499ac is characterized for operation from ?20 c to 85 c. available options t a plastic dip (p) plastic small-outline (ps) ?20 c to 85 c tl499acp tl499acps the ps package is available taped and reeled. add the suffix r to device type (e.g., tl499acpsr). copyright ? 2001, texas instruments incorporated production data information is current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters. please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 1 2 3 4 8 7 6 5 series in1 ref sw reg in2 sw current ctrl output gnd (pwr) sw in gnd p or ps package (top view)
tl499a wide-range power-supply controllers slvs029g ? january 1984 ? revised september 2001 2 post office box 655303 ? dallas, texas 75265 functional block diagram startup gnd ref sw reg control current sense voltage sense startup blocking diode sw in sw reg in2 series in1 output gnd (pwr) sw current ctrl 3 1 5 6 8 7 4 2 + + + ? + ? absolute maximum ratings over operating free-air temperature range (unless otherwise noted) ? output voltage, v o (see note 1) 35 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input voltage, series regulator, v i 1 35 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input voltage, switching regulator, v i 2 10 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . blocking-diode reverse voltage 35 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . blocking-diode forward current 1 a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . power switch current (sw in) 1 a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . package thermal impedance, ja (see notes 2 and 3): p package 85 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . ps package 95 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ? 65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ? stresses beyond those listed under ? absolute maximum ratings ? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ? recommended operating conditions ? is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. notes: 1. all voltage values are with respect to network ground terminal. 2. maximum power dissipation is a function of t j (max), ja , and t a . the maximum allowable power dissipation at any allowable ambient temperature is p d = (t j (max) ? t a )/ ja . operating at the absolute maximum t j of 150 c can affect reliability. 3. the package thermal impedance is calculated in accordance with jesd 51-7.
tl499a wide-range power-supply controllers slvs029g ? january 1984 ? revised september 2001 3 post office box 655303 ? dallas, texas 75265 recommended operating conditions min nom max unit output voltage, v o 2.9 30 v input voltage, v i 1 (series in1) 4.5 32 v input voltage, v i 2 (sw reg in2) 1.1 10 v output-to-input differential voltage, switching regulator, v o ? v i 2 (see note 4) 1.2 28.9 v continuous output current, i o 100 ma power switch current (at sw in) 500 ma current-limiting resistor, r cl 150 1000 ? filter capacitor 100 470 f pass capacitor 0.1 f inductor, l (dcr 0.1 ? ) 50 150 h operating free-air temperature, t a ? 20 85 c note 4: when operating temperature range is t a 70 c, minimum v o ? v i 2 is 1.2 v. when operating temperature range is t a 85 c, minimum v o ? v i 2 is 1.9 v. electrical characteristics over recommended operating conditions (unless otherwise noted) parameter test conditions tl499ac unit parameter test conditions min typ max unit voltage deviation (see note 5) 20 30 mv/v v o v i 2 switching regulator t a = ? 20 c to 70 c 1.2 v o ? v i 2 switching regulator t a = ? 20 c to 85 c 1.9 v dropout voltage series regulator v i 1 = 15 v, i o = 50 ma 1.8 reference voltage (internal) v i 1 = 5 v, v o = 3 v, i o = 1 ma 1.2 1.26 1.32 v reference-voltage change with temperature 5 10 mv/v output regulation (of reference voltage) i o = 1 ma to 50 ma 10 30 mv/v v i 2 = 1.1 v, v o = 12 v, r cl = 150 ? , t a = 25 c 10 output current switching regulator v i 2 = 1.5 v, v o = 15 v, r cl = 150 ? , t a = 25 c 15 ma (see figure 1) v i 2 = 6 v, v o = 30 v, r cl = 150 ? , t a = 25 c 65 ma series regulator 100 standby current switching regulator v i 2 = 3 v, v o = 9 v, t a = 25 c 15 80 a standby current series regulator v i 1 = 15 v, v o = 9 v, r e 2 = 4.7 k ? 0.8 1.2 ma note 5: voltage deviation is the output voltage difference that occurs in a change from series regulation to switching regulatio n: voltage deviation v o series regulation v o switching regulation
tl499a wide-range power-supply controllers slvs029g ? january 1984 ? revised september 2001 4 post office box 655303 ? dallas, texas 75265 application information tl499a l = 50 h series in1 sw reg in2 r cl = 500 ? output c f = 470 f r e 1 r e 2 = 4.7 k ? c p = 0.01 f series in1 sw reg in2 ref sw current ctrl output sw in gnd (pwr) gnd + 1 3 8 7 6 5 8 1 2 3 4 figure 1. tl499a basic configuration table 1. maximum output current vs input and output voltages for step-up switching regulator with r cl = 150 ? output switching regulator input voltage (sw reg in2) (v) output voltage 1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9 (v) output current (ma) 30 65 90 25 50 80 100 20 20 25 30 80 100 100 15 15 20 30 45 55 100 100 100 12 10 15 20 25 30 40 55 70 100 100 100 10 15 20 25 30 35 45 65 80 100 100 9 20 25 25 35 40 50 70 90 100 100 6 30 35 40 45 55 75 95 100 5 35 40 45 55 70 85 100 100 circuit of figure 1, except: 4.5 35 45 50 60 75 95 100 100 ? r cl = 150 ? 3 55 65 ? 75 ? 95 ? 100 ? c f = 330 f 2.9 60 ? 70 ? 75 ? 100 ? 100 ? c p = 0.1 f ? the difference between the output and input voltage for these combinations is greater than the minimum output-to-input differential-voltage specification at 70 c (1.2 v), but less than the minimum at 85 c (1.9 v).
tl499a wide-range power-supply controllers slvs029g ? january 1984 ? revised september 2001 5 post office box 655303 ? dallas, texas 75265 application information table 2. maximum output current vs input and output voltages for step-up switching regulator with r cl = 200 ? output switching regulator input voltage (sw reg in2) (v) output voltage 1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9 (v) output current (ma) 30 50 100 25 50 70 100 20 15 25 30 70 90 100 15 10 15 25 35 45 90 100 100 12 10 10 15 20 25 35 45 60 100 100 100 10 15 20 20 25 30 40 55 70 100 100 9 20 20 25 30 35 45 60 80 100 6 25 30 35 45 50 65 90 100 5 30 35 40 55 60 75 100 100 circuit of figure 1, except: 4.5 35 40 45 55 65 85 100 100 ? r cl = 200 ? 3 50 55 ? 65 ? 80 ? 90 ? c f = 330 f 2.9 50 ? 60 ? 65 ? 85 ? 100 ? c p = 0.1 f ? the difference between the output and input voltage for these combinations is greater than the minimum output-to-input differential-voltage specification at 70 c (1.2 v), but less than the minimum at 85 c (1.9 v). table 3. maximum output current vs input and output voltages for step-up switching regulator with r cl = 300 ? output switching regulator input voltage (sw reg in2) (v) output voltage 1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9 (v) output current (ma) 30 40 70 25 40 55 100 20 10 15 20 55 70 100 15 10 10 20 30 35 75 95 100 12 10 10 10 15 20 25 35 45 95 100 100 10 15 15 15 20 25 30 45 55 100 100 9 15 15 20 25 30 35 50 60 100 100 6 25 25 30 35 45 55 70 90 5 30 30 35 45 50 65 85 100 circuit of figure 1, except: 4.5 30 35 40 45 55 70 95 100 ? r cl = 300 ? 3 45 50 ? 55 ? 70 ? 90 ? c f = 330 f 2.9 45 ? 50 ? 60 ? 75 ? 95 ? c p = 0.1 f ? the difference between the output and input voltage for these combinations is greater than the minimum output-to-input differential-voltage specification at 70 c (1.2 v), but less than the minimum at 85 c (1.9 v).
tl499a wide-range power-supply controllers slvs029g ? january 1984 ? revised september 2001 6 post office box 655303 ? dallas, texas 75265 application information table 4. maximum output current vs input and output voltages for step-up switching regulator with r cl = 510 ? output switching regulator input voltage (sw reg in2) (v) output voltage 1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9 (v) output current (ma) 30 30 50 25 25 40 75 20 40 55 90 15 15 20 55 70 100 12 10 15 25 35 65 80 100 10 10 20 25 30 40 70 85 9 10 10 10 15 20 25 35 45 75 100 6 15 20 20 25 30 35 50 60 5 20 20 25 30 35 45 55 70 circuit of figure 1, except: 4.5 20 25 30 35 40 50 65 90 ? r cl = 510 ? 3 35 35 ? 40 ? 50 ? 75 ? c f = 330 f 2.9 35 ? 35 ? 40 ? 55 ? 80 ? c p = 0.1 f ? the difference between the output and input voltage for these combinations is greater than the minimum output-to-input differential-voltage specification at 70 c (1.2 v), but less than the minimum at 85 c (1.9 v). table 5. maximum output current vs input and output voltages for step-up switching regulator with r cl = 1 k ? output switching regulator input voltage (sw reg in2) (v) output voltage 1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9 (v) output current (ma) 30 35 25 35 50 20 35 60 15 10 30 45 65 12 20 40 45 85 10 15 25 40 55 9 10 10 15 25 30 45 60 6 10 10 10 15 20 20 30 35 5 10 10 15 20 20 25 35 40 circuit of figure 1, except: 4.5 15 15 15 20 25 30 40 45 ? r cl = 1 k ? 3 20 25 ? 25 ? 30 ? 35 ? c f = 330 f 2.9 20 ? 25 ? 25 ? 30 ? 45 ? c p = 0.1 f ? the difference between the output and input voltage for these combinations is greater than the minimum output-to-input differential-voltage specification at 70 c (1.2 v), but less than the minimum at 85 c (1.9 v).
package option addendum www.ti.com 10-jun-2014 addendum-page 1 packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish (6) msl peak temp (3) op temp (c) device marking (4/5) samples tl499acp active pdip p 8 50 pb-free (rohs) cu nipdau n / a for pkg type -20 to 85 tl499acp tl499acpe4 active pdip p 8 50 pb-free (rohs) cu nipdau n / a for pkg type -20 to 85 tl499acp tl499acpsr active so ps 8 2000 green (rohs & no sb/br) cu nipdau level-1-260c-unlim -20 to 85 t499a (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) eco plan - the planned eco-friendly classification: pb-free (rohs), pb-free (rohs exempt), or green (rohs & no sb/br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. tbd: the pb-free/green conversion plan has not been defined. pb-free (rohs): ti's terms "lead-free" or "pb-free" mean semiconductor products that are compatible with the current rohs requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, ti pb-free products are suitable for use in specified lead-free processes. pb-free (rohs exempt): this component has a rohs exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. the component is otherwise considered pb-free (rohs compatible) as defined above. green (rohs & no sb/br): ti defines "green" to mean pb-free (rohs compatible), and free of bromine (br) and antimony (sb) based flame retardants (br or sb do not exceed 0.1% by weight in homogeneous material) (3) msl, peak temp. - the moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature. (4) there may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) multiple device markings will be inside parentheses. only one device marking contained in parentheses and separated by a "~" will appear on a device. if a line is indented then it is a continuation of the previous line and the two combined represent the entire device marking for that device. (6) lead/ball finish - orderable devices may have multiple material finish options. finish options are separated by a vertical ruled line. lead/ball finish values may wrap to two lines if the finish value exceeds the maximum column width. important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and
package option addendum www.ti.com 10-jun-2014 addendum-page 2 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release. in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis.
tape and reel information *all dimensions are nominal device package type package drawing pins spq reel diameter (mm) reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p1 (mm) w (mm) pin1 quadrant tl499acpsr so ps 8 2000 330.0 16.4 8.2 6.6 2.5 12.0 16.0 q1 package materials information www.ti.com 14-jul-2012 pack materials-page 1
*all dimensions are nominal device package type package drawing pins spq length (mm) width (mm) height (mm) tl499acpsr so ps 8 2000 367.0 367.0 38.0 package materials information www.ti.com 14-jul-2012 pack materials-page 2

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