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? semiconductor components industries, llc, 2015 june, 2017 ? rev. 1 1 publication order number: ncv4266?2c/d ncv4266-2c 150 ma low i q , low-dropout voltage regulator with enable the ncv4266?2c is a 150 ma output current integrated low dropout, low quiescent current regulator family designed for use in harsh automotive environments. it includes wide operating temperature and input voltage ranges. the device is offered with fixed voltage versions of 3.3 v and 5.0 v available in 2% output voltage accuracy. it has a high peak input voltage tolerance and reverse input voltage protection. it also provides overcurrent protection, overtemperature protection and enable function for control of the state of the output voltage. the ncv4266?2c is available in sot?223 surface mount package. the output is stable over a wide output capacitance and esr range. the ncv4266?2c has improved startup behavior during input voltage transients. features ? output voltage options: 3.3 v, 5.0 v ? output voltage accuracy: 2.0% ? output current: up to 150 ma ? low quiescent current (typ. 40 a @ 100 a) ? low dropout voltage (typ. 250 mv @ 100 ma) ? enable input ? fault protection ? +45 v peak transient voltage ? ?42 v reverse voltage ? short circuit ? thermal overload ? aec?q100 grade 1 qualified and ppap capable ? these are pb?free devices ? + i en q gnd current limit and saturation sense bandgap reference thermal shutdown figure 1. block diagram error amplifier sot?223 (to?261) st suffix case 318e see detailed ordering and shipping information in the ordering information section on page 10 of this data sheet. ordering information www. onsemi.com marking diagram 1 ayw 662cx a = assembly location y = year w = work week x = voltage option 3.3 v (x = 3) 5.0 v (x = 5) = pb?free package (note: microdot may be in either location)
ncv4266?2c www. onsemi.com 2 pin function description pin no. dfn8 pin no. symbol description 1 1 i input; battery supply input v oltage. 3 2 en enable input; low level disables the ic. 4 3 q output; bypass with a capacitor to gnd. 8 4 gnd ground. maximum ratings rating symbol min max unit input v oltage v i ?42 45 v input peak t ransient v oltage v i ? 45 v enable input v oltage v en ?42 45 v output v oltage v q ?0.3 32 v ground current i q ? 100 ma input voltage operating range v i v q + 0.5 v or 4.5 (note 1) 45 v esd susceptibility (human body model) ? 3.0 ? kv junction t emperature t j ?40 150 c storage t emperature t stg ?50 150 c stresses exceeding those listed in the maximum ratings table may damage the device. if any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be af fected. 1. minimum v i = 4.5 v or (v q + 0.5 v), whichever is higher. lead temperature soldering reflow and msl (note 2) rating symbol min max unit lead temperature soldering reflow (smd styles only), leaded, 60?150 s above 183, 30 s max at peak reflow (smd styles only), free, 60?150 s above 217, 40 s max at peak wave solder (through hole styles only), 12 sec max t sld ? ? ? 240 265 310 c moisture sensitivity level msl 3 ? 2. per ipc / jedec j?std?020c. thermal resistance parameter symbol condition min max unit junction?to?ambient sot?223 r ja ? 109 (note 3) c/w junction?to?tab sot?223 r jt ? 10.9 c/w 3. 1 oz copper, 100 mm 2 copper area, fr4.
ncv4266?2c www. onsemi.com 3 electrical characteristics (?40 c < t j < 150 c, v i = 13.5 v, v en = 5 v; unless otherwise noted.) characteristic symbol test conditions min typ max unit output output voltage (5.0 v v ersion) v q 100 a < i q < 150 ma, 6.0 v < v i < 28 v 4.9 5.0 5.1 v output voltage (3.3 v v ersion) v q 100 a < i q < 150 ma, 4.5 v < v i < 28 v 3.234 3.3 3.366 v output current limitation i q v q = 90% v qtyp 150 390 500 ma quiescent current (sleep mode) i q = i i ? i q i q v en = 0 v, t j = ?40 c to 100 c ? 0 1.0 a quiescent current, i q = i i ? i q i q i q = 100 a, t j < 85 c ? 40 60 a quiescent current, i q = i i ? i q i q i q = 100 a ? 40 70 a quiescent current, i q = i i ? i q i q i q = 50 ma ? 0.55 4.0 ma dropout voltage (5.0 v v ersion) v dr i q = 100 ma, v dr = v i ? v q (note 4) ? 230 500 mv load regulation (5.0 v v ersion) v q,lo i q = 1.0 ma to 100 ma ? 3.5 90 mv load regulation (3.3 v v ersion) v q,lo i q = 1.0 ma to 100 ma ? 0.5 60 mv line regulation (5.0 v v ersion) v q v i = 6.0 v to 28 v, i q = 1.0 ma ? 1.0 30 mv line regulation (3.3 v v ersion) v q v i = 4.5 v to 28 v, i q = 1.0 ma ? 0.5 20 mv power supply ripple rejection psrr f r = 100 hz, v r = 0.5 v pp ? 68 ? db enable input enable voltage, output high v en v q v qmin ? 2.0 2.8 v enable voltage, output low (off) v en v q 0.1 v 0.8 1.8 ? v enable input current i en v en = 5.0 v ? 4.0 8.0 a thermal shutdown thermal shutdown t emperature* t sd 150 ? 200 c product parametric performance is indicated in the electrical characteristics for the listed test conditions, unless otherwise noted. product performance may not be indicated by the electrical characteristics if operated under different conditions. *guaranteed by design, not tested in production. 4. measured when the output voltage v q has dropped 100 mv from the nominal value obtained at v = 13.5 v. input c i1 1.0 f c i2 100 nf i i i en 1 2 3 4 gnd c q 3.3 f i q q output figure 2. applications circuit ncv4266?2c r l i en
ncv4266?2c www. onsemi.com 4 typical characteristics curves ? 5 v version figure 3. output stability with output capacitor esr i q , output current (ma) esr ( ) stable region unstable region 0.01 1 10 100 0 25 50 75 100 125 150 v i , input voltage (v) i q , output current (ma) 0 1 3 5 6 01 4 5 8 10 v i , input voltage (v) v q , output voltage (v) 0 50 100 150 200 350 0 5 10 15 20 25 30 35 45 0.1 ?1.0 ?0.6 0.2 0.6 1.0 ?50 ?40 ?10 10 30 50 v i , input voltage (v) i i , input current (ma) i q , output current (ma) t j = 25 c v dr , dropout voltage (mv) 0 50 100 200 300 400 0 25 50 75 100 125 150 450 figure 4. output voltage vs. junction temperature t j , junction temperature ( c) v q , output voltage (v) 4.90 5.00 5.05 5.10 ?40 0 40 80 120 160 4.95 figure 5. output voltage vs. input voltage figure 6. input current vs. input voltage figure 7. maximum output current vs. input voltage figure 8. dropout voltage vs. output current c q = 3.3 f v i = 13.5 v r l = 1 k r l = 33 t j = 25 c 23 6 7 9 2 4 r l = 6.8 k t j = 25 c ?30 ?20 0 20 40 ?0.2 v q = 0 v t j = 25 c 40 250 300 150 250 350 t j = 125 c
ncv4266?2c www. onsemi.com 5 typical characteristics curves ? 5 v version figure 9. quiesc ent current vs. output current (high load) figure 10. quiescent current vs. output current (low load) figure 11. quiescent current vs. input voltage 0 1 2 3 4 5 6 0 5 20 25 40 i q , quiescent current (ma) t j = 25 c r l = 33 v i , input voltage (v) 0 0.5 1.0 1.5 2.5 3.0 3.5 0 25 50 75 125 150 i q , output current (ma) i q , quiescent current (ma) v i = 13.5 v t j = 25 c 0 0.05 0.10 0.15 0.20 0.25 02 46 8 20 i q , output current (ma) i q , quiescent current (ma) 100 2.0 v i = 13.5 v t j = 25 c 10 12 14 16 18 10 15 30 35
ncv4266?2c www. onsemi.com 6 typical characteristics curves ? 3.3 v version ?50 ?40 ?20 0 10 20 50 figure 12. output stability with output capacitor esr figure 13. output voltage vs. junction temperature figure 14. output voltage vs. input voltage figure 15. input current vs. input voltage v i , input voltage (v) v i , input voltage (v) v q , output voltage (v) i i , input current (ma) 0 1 2 3 4 01 456 8 10 r l = 22 t j = 25 c ?1.0 ?0.6 ?0.2 0.2 0.6 1.0 i q , output current (ma) t j , junction temperature ( c) esr ( ) v q , output voltage (v) 0.01 0.1 1 10 100 0 25 50 75 100 125 150 3.24 3.26 3.28 3.30 3.32 3.34 3.36 ?40 0 40 80 120 160 v i = 13.5 v r l = 660 figure 16. maximum output current vs. input voltage figure 17. quiescent current vs. input voltage v i , input voltage (v) v i , input voltage (v) i q , output current (ma) i q , quiescent current (ma) 0 50 150 200 300 350 0 5 10 15 20 25 45 v q = 0 v t j = 25 c 0 0.5 2.0 3.0 4.5 5.0 5.5 0 5 10 20 25 35 40 t j = 25 c r l = 22 stable region unstable region c q = 3.3 f 23 7 9 r l = 6.8 k t j = 25 c ?30 ?10 30 40 30 35 40 100 250 15 30 1.0 1.5 2.5 4.0 3.5
ncv4266?2c www. onsemi.com 7 typical characteristics curves ? 3.3 v version figure 18. quiescent current vs. output current (high load) figure 19. quiescent current vs. output current (low load) i q , output current (ma) i q , output current (ma) i q , quiescent current (ma) i q , quiescent current (ma) 0 0.5 1.5 2.0 3.0 3.5 0 25 50 75 100 125 150 t j = 25 c v i = 13.5 v 0 0.05 0.10 0.15 0.20 0.25 02 4 1012 16 20 1.0 2.5 t j = 25 c v i = 13.5 v 6 8 14 18
ncv4266?2c www. onsemi.com 8 circuit description the ncv4266?2c is an integrated low dropout regulator that provides a regulated voltage at 150 ma to the output. it is enabled with an input to the enable pin. the regulator voltage is provided by a pnp pass transistor controlled by an error amplifier with a bandgap reference, which gives it the lowest possible dropout voltage. the output current capability is 150 ma, and the base drive quiescent current is controlled to prevent oversaturation when the input voltage is low or when the output is overloaded. the regulator is protected by both current limit and thermal shutdown. thermal shutdown occurs above 150 c to protect the ic during overloads and extreme ambient temperatures. regulator the error amplifier compares the reference voltage to a sample of the output voltage (v q ) and drives the base of a pnp series pass transistor via a buffer. the reference is a bandgap design to give it a temperature?stable output. saturation control of the pnp is a function of the load current and input voltage. oversaturation of the output power device is prevented, and quiescent current in the ground pin is minimized. see figure 2, test circuit, for circuit element nomenclature illustration. regulator stability considerations the input capacitors (c i1 and c i2 ) are necessary to stabilize the input impedance to avoid voltage line influences. using a resistor of approximately 1.0 in series with c i2 can stop potential oscillations caused by stray inductance and capacitance. the output capacitor helps determine three main characteristics of a linear regulator: startup delay, load transient response and loop stability. the capacitor value and type should be based on cost, availability, size and temperature constraints. the aluminum electrolytic capacitor is the least expensive solution, but, if the circuit operates at low temperatures (?25 c to ?40 c), both the value and esr of the capacitor will vary considerably. the capacitor manufacturer?s data sheet usually provides this information. the value for the output capacitor c q , shown in figure 2, should work for most applications; see also figures 3 and 12 for output stability at various load and output capacitor esr conditions. stable region of esr in figures 3 and 12 shows esr values at which the ldo output voltage does not have any permanent oscillations at any dynamic changes of output load current. marginal esr is the value at which the output voltage waving is fully damped during five periods after the load change and no oscillation is further observable. esr characteristics were measured with ceramic capacitors and additional series resistors to emulate esr. low duty cycle pulse load current technique has been used to maintain junction temperature close to ambient temperature. enable input the enable pin is used to turn the regulator on or off. by holding the pin down to a voltage less than 0.8 v, the output of the regulator will be turned off. when the voltage on the enable pin is greater than 3.5 v, the output of the regulator will be enabled to power its output to the regulated output voltage. the enable pin may be connected directly to the input pin to give constant enable to the output regulator.
ncv4266?2c www. onsemi.com 9 calculating power dissipation in a single output linear regulator the maximum power dissipation for a single output regulator (figure 20) is: p d(max) [v i(max) v q(min) ]i q(max) v i(max) i q (eq. 1 ) where v i(max) is the maximum input voltage, v q(min) is the minimum output voltage, i q(max) is the maximum output current for the application, i q is the quiescent current the regulator consumes at i q(max) . once the value of p d(max) is known, the maximum permissible value of r ja can be calculated: r ja 150 o c t a p d (eq. 2) the value of r ja can then be compared with those in the package section of the data sheet. those packages with r ja less than the calculated value in equation 2 will keep the die temperature below 150 c. in some cases, none of the packages will be sufficient to dissipate the heat generated by the ic, and an external heatsink will be required. smart regulator ? iq control features i q i i figure 20. single output regulator with key performance parameters labeled v i v q } heatsinks a heatsink effectively increases the surface area of the package to improve the flow of heat away from the ic and into the surrounding air. each material in the heat flow path between the ic and the outside environment will have a thermal resistance. like series electrical resistances, these resistances are summed to determine the value of r ja : r ja r jc r cs r sa (eq. 3) where r jc is the junction?to?case thermal resistance, r cs is the case?to?heatsink thermal resistance, r sa is the heatsink?to?ambient thermal resistance. r jc appears in the package section of the data sheet. like r ja , it too is a function of package type. r cs and r sa are functions of the package type, heatsink and the interface between them. these values appear in data sheets of heatsink manufacturers. thermal, mounting, and heatsinking considerations are discussed in the on semiconductor application note an1040/d.
ncv4266?2c www. onsemi.com 10 figure 21. r ja vs. copper spreader area, sot?223 copper heat spreader area (mm 2 ) r ja , thermal resistance (c /w) 1 oz 2 oz 40 60 80 100 140 120 160 180 0 100 200 300 400 500 600 700 0.1 1 10 1000 0.000001 0.00001 0. 0001 0.001 0.01 0.1 1 10 100 1000 figure 22. single?pulse heating curve, sot?223 pulse time (sec) r(t) (c /w) cu area 100 mm 2 , 1 oz. 100 ordering information device output v oltage package shipping ? ncv4266?2cst33t3g 3.3 v sot?223 (pb?free) 4000 / tape & reel ncv4266?2cst50t3g 5.0 v sot?223 (pb?free) 4000 / tape & reel ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd801 1/d.
ncv4266?2c www. onsemi.com 11 package dimensions sot?223 (to?261) case 318e?04 issue n a1 b1 d e b e e1 4 123 0.08 (0003) a l1 c notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: inch. 1.5 0.059 mm inches scale 6:1 3.8 0.15 2.0 0.079 6.3 0.248 2.3 0.091 2.3 0.091 2.0 0.079 soldering footprint h e dim a min nom max min millimeters 1.50 1.63 1.75 0.060 inches a1 0.02 0.06 0.10 0.001 b 0.60 0.75 0.89 0.024 b1 2.90 3.06 3.20 0.115 c 0.24 0.29 0.35 0.009 d 6.30 6.50 6.70 0.249 e 3.30 3.50 3.70 0.130 e 2.20 2.30 2.40 0.087 0.85 0.94 1.05 0.033 0.064 0.068 0.002 0.004 0.030 0.035 0.121 0.126 0.012 0.014 0.256 0.263 0.138 0.145 0.091 0.094 0.037 0.041 nom max l1 1.50 1.75 2.00 0.060 6.70 7.00 7.30 0.264 0.069 0.078 0.276 0.287 h e ? ? e1 0 10 0 10 l l 0.20 ??? ??? 0.008 ??? ??? ncv4266?2c/d on semiconductor and are trademarks of semiconductor components industries, llc dba on semiconductor or its subsidiaries i n the united states and/or other countries. on semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property . a listing of on semiconductor?s product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent? marking.pdf . on semiconductor reserves the right to make changes without further notice to any products herein. on semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does o n semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. buyer is responsible for its products and applications using on semiconductor products, including compliance with all laws, reg ulations and safety requirements or standards, regardless of any support or applications information provided by on semiconductor. ?typical? parameters which may be provided in on semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typic als? must be validated for each customer application by customer?s technical experts. on semiconductor does not convey any license under its patent rights nor the right s of others. on semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any fda class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. should buyer purchase or use on semicondu ctor products for any such unintended or unauthorized application, buyer shall indemnify and hold on semiconductor 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 dea th associated with such unintended or unauthorized use, even if such claim alleges that on semiconductor was negligent regarding the design or manufacture of the part. on semicon ductor is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. p ublication 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 literature fulfillment : literature distribution center for on semiconductor 19521 e. 32nd pkwy, aurora, colorado 80011 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 lo cal sales representative ?

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