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rev. 1.00 1 april 15, 2016 rev. 1.00 pb april 15, 2016 ht73xx-7 30v, 250ma tinypower tm ldo with protections features ? low power consumption ? low voltage drop ? low temperature coeffcient ? high input voltage C up to 30v ? output voltage accuracy: tolerance 2% ? over current protection ? over temperature protection ? chip enable/disable function ? package types: 8-pin sop-ep, sot89-3 and to92-3 applications ? battery-powered equipment ? communication equipment ? audio/video equipment general description the ht73xx-7 is a low power high voltage series of regulators implemented in cmos technology which has the advantages of low voltage drop and low quiescent current. they allow input voltages as high as 30v and are available with several fixed output voltages ranging from 2.1v to 5.0v. when the ce input is low, a fast discharge path pulls the output voltage low via an internal pull-down resistor. an internal over-current protection circuit prevents the device from damage even if the output is shorted to ground. an over-temperature protection circuit ensures the device junction temperature will not exceed a temperature of 150c. selection table part no. output voltage packages markings ht7321-7 2.1v 8sop-ep to92-3, sot89-3 ht73xx-7 for the 8sop-ep type. 73xx-7 marking for the to92-3, sot89-3 types. ht7323-7 2.3v ht7325-7 2.5v ht7327-7 2.7v ht7330-7 3.0v ht7333-7 3.3v ht7336-7 3.6v ht7340-7 4.0v HT7344-7 4.4v ht7350-7 5.0v note: "xx" stands for output voltages.
rev. 1.30 2 april 15, 2016 ht73xx-7 block diagram vref otp ocp soft start vin ce gnd out en 300 ? en pin assignment gnd vin out 1 23 73xx-7 sot89-3 to92-3 73xx-7 gnd vin out 123 vin ce nc gnd out nc nc nc ht73xx-7 8 sop-a (exposed pad) 9 vin 1 2 3 4 8 7 6 5 pin descriptions pin no. pin name pin description 8sop-ep sot89-3 to92-3 5 1 1 gnd ground pin 8, 9 2 2 vin input pin 1 3 3 out output pin 7 ce chip enable pin, high enable 2, 3, 4, 6 nc no connection
rev. 1.30 3 april 15, 2016 ht73xx-7 absolute maximum ratings parameter value unit v in -0.3 to +33 v v ce -0.3 to (v in +0.3) v operating temperature range, ta -40 to +85 o c maximum junction temperature, t j(max) +150 o c storage temperature range -65 to +165 o c junction-to-ambient thermal resistance, ja 8sop-ep 125 c/w sot89-3 200 c/w to92-3 200 c/w power dissipation, p d 8sop-ep 0.80 w sot89-3 0.50 w to92-3 0.50 w note: p d is measured at ta=25c. recommended operating range parameter value unit v in v out +2 to 30 v v ce 0 to v in v electrical characteristics v in =v out +2v, v ce =v in , ta=25 o c and c in =c out =10f, unless otherwise specifed symbol parameter test conditions min. typ. max. unit v in input voltage 30 v v out output voltage range 2.1 5.0 v v o output voltage accuracy i out =10ma -2 2 % i out output current 250 ma |?v out | load regulation 1ma i out 100ma 45 90 mv v dif dropout voltage i out =1ma, v out change=2% (note) 6 15 mv i out =30ma, v out change=2% (note) 120 300 mv i ss1 quiescent current i out =0ma 2.5 4.0 a i ss2 v ce =2.0v, v in =30v, i out =0ma 3.0 5.0 a i shd shutdown current v ce =0v 0.1 0.5 a ?v out ?v in ?v out line regulation (v out +1v) v in 30v, i out =1ma 0.1 0.2 %/v ?v out ?t a ?v out temperature coeffcient i out =40ma, -40c < ta < 85c 100 ppm/c i short output short current v in =12v, force v out =0v 250 ma t shd shutdown temperature 150 o c t rec recovery temperature 25 o c v ih enable high threshold ce pin, v out +1v v in 30v 2.0 v v il enable low threshold ce pin, v out +1v v in 30v 0.6 v r dis discharge resistor ce=0v, measure at v out 300 ? note: the dropout voltage is defned as the input voltage minus the output voltage that produces a 2% change in the output voltage from the value at v in =v out +2v with a fxed load.
rev. 1.30 4 april 15, 2016 ht73xx-7 typical performance characteristic test condition: v in =v out +2v, v ce =v in , i out =10ma, c in =10f, c out =10f and ta=25oc, unless otherwise noted. 3.25 3.26 3.27 3.28 3.29 3.3 3.31 3.32 3.33 4 7 10 13 16 19 22 25 28 31 v in (v) v out (v) -40c 25c 85c 4.9 4.92 4.94 4.96 4.98 5 5.02 5.04 5.06 5 8 11 14 17 20 23 26 29 32 v in (v) v out (v) -40c 25c 85c line regulation: ht7333-7 (i out =10ma) line regulation: ht7350-7 (i out =10ma) 1 1.2 1.4 1.6 1.8 2 2.2 2.4 4 7 10 13 16 19 22 25 28 31 v in (v) i ss (ua) 85c 25c -40c 1 1.5 2 2.5 3 3.5 4 4.5 5 8 11 14 17 20 23 26 29 32 v in (v) i ss (ua) -40c 25c 85c i ss vs v in : ht7333-7 (i out =0ma) i ss vs v in : ht7350-7 (i out =0ma) 0 0.1 0.2 0.3 0.4 0.5 4 7 10 13 16 19 22 25 28 31 v in (v) i shd (ua) -40c 25c 85c 0 0.1 0.2 0.3 0.4 0.5 5 8 11 14 17 20 23 26 29 32 v in (v) i shd (ua) -40c 25c 85c i shd vs v in : ht7333-7 (i out =0ma) i shd vs v in : ht7350-7 (i out =0ma) 0 50 100 150 200 250 0 25 50 75 100 125 150 175 200 225 250 i out (ma) i ss (ua) -40c 25c 85c 0 50 100 150 200 250 0 25 50 75 100 125 150 175 200 225 250 i out (ma) i ss (ua) -40c 25c 85c i ss vs i out : ht7333-7 (v in =5.3v) i ss vs i out : ht7350-7 (v in =7.0v) 0 0.5 1 1.5 2 2.5 3 2.5 5.5 8.5 11.5 14.5 17.5 20.5 23.5 26.5 29.5 32.5 v ce (v) i ss (ua) -40c 25c 85c 0 0.5 1 1.5 2 2.5 3 2.5 5.5 8.5 11.5 14.5 17.5 20.5 23.5 26.5 29.5 32.5 v ce (v) i ss (ua) -40c 25c 85c i ss vs v ce : ht7333-7 (i out =0ma) i ss vs v ce : ht7350-7 (i out =0ma)
rev. 1.30 5 april 15, 2016 ht73xx-7 test condition: v in =v out +2v, v ce =v in , i out =10ma, c in =10f, c out =10f and ta=25oc, unless otherwise noted 0 20 40 60 80 100 120 140 160 180 5 7 9 11 13 15 17 19 21 23 25 27 29 31 v in (v) temperature(c) tshd(+) thd(-) 0 100 200 300 400 500 600 700 4 7 10 13 16 19 22 25 28 31 v in (v) i shd (ma) -40c 25c 85c t shd vs v in i shd vs v in 0 200 400 600 800 1000 1200 1400 1600 0 25 50 75 100 125 150 175 200 225 250 i out (ma) v dif (mv) -40c 25c 85c 0 200 400 600 800 1000 1200 1400 0 25 50 75 100 125 150 175 200 225 250 i out (ma) v dif (mv) -40c 25c 85c dropout voltage: ht7333-7 dropout voltage: ht7350-7
rev. 1.30 6 april 15, 2016 ht73xx-7 test condition: v in =v out +2v, v ce =v in , i out =10ma, c in =10f, c out =10f and ta=25oc, unless otherwise noted. load transient response: ht7333-7 (v in =5.3v, i out =0ma to 40ma) load transient response: ht7350-7 (v in =7.0v, i out =0ma to 40ma) load transient response: ht7333-7 (v in =5.3v, i out =40ma to 0ma) load transient response: ht7350-7 (v in =7.0v, i out =40ma to 0ma) line trasient response: ht7333-7 (i out =10ma) line trasient response: ht7350-7 (i out =10ma) line trasient response: ht7333-7 (i out =10ma) line trasient response: ht7350-7 (i out =10ma)
rev. 1.30 7 april 15, 2016 ht73xx-7 test condition: v in =v out +2v, v ce =v in , i out =10ma, c in =10f, c out =10f and ta=25oc, unless otherwise noted. line trasient response: ht7333-7 (i out =10ma) line trasient response: ht7350-7 (i out =10ma) line trasient response: ht7333-7 (i out =10ma) line trasient response: ht7350-7 (i out =10ma) power on response: ht7333-7 (i out =0ma,v ce =0v to 2.7v) power on response: ht7350-7 (i out =0ma,v ce =0v to 2.7v) power off response: ht7333-7 (i out =0ma,v ce =2.7v to 0v) power off response: ht7350-7 (i out =0ma,v ce =2.7v to 0v)
rev. 1.30 8 april 15, 2016 ht73xx-7 test condition: v in =v out +2v, v ce =v in , i out =10ma, c in =10f, c out =10f and ta=25oc, unless otherwise noted. power on response: ht7333-7 (i out =250ma,v ce =0v to 2.7v) power on response: ht7350-7 (i out =250ma,v ce =0v to 2.7v) power off response: ht7333-7 (i out =250ma,v ce =2.7v to 0v) power off response: ht7350-7 (i out =250ma,v ce =2.7v to 0v) power on response: ht7333-7 (i out =0ma, t rise =0.1ms) power on response: ht7350-7 (i out =0ma, t rise =0.1ms) power off response: ht7333-7 (i out =0ma, t fall =0.1ms) power off response: ht7350-7 (i out =0ma, t fall =0.1ms)
rev. 1.30 9 april 15, 2016 ht73xx-7 test condition: v in =v out +2v, v ce =v in , i out =10ma, c in =10f, c out =10f and ta=25oc, unless otherwise noted. power on response: ht7333-7 (i out =0ma, t rise =100ms) power on response: ht7350-7 (i out =0ma, t rise =100ms) power off response: ht7333-7 (i out =0ma, t fall =100ms) power off response: ht7350-7 (i out =0ma, t fall =100ms) power on response: ht7333-7 (i out =250ma, t rise =0.1ms) power on response: ht7350-7 (i out =250ma, t rise =0.1ms) power off response: ht7333-7 (i out =250ma, t fall =0.1ms) power off response: ht7350-7 (i out =250ma, t fall =0.1ms)
rev. 1.30 10 april 15, 2016 ht73xx-7 test condition: v in =v out +2v, v ce =v in , i out =10ma, c in =10f, c out =10f and ta=25oc, unless otherwise noted. power on response: ht7333-7 (i out =250ma, t rise =100ms) power on response: ht7350-7 (i out =250ma, t rise =100ms) power off response: ht7333-7 (i out =250ma, t fall =100ms) power off response: ht7350-7 (i out =250ma, t fall =100ms)
rev. 1.30 11 april 15, 2016 ht73xx-7 application information when using the ht73xx-7 regulators, it is important that the following application points are noted if correct operation is to be achieved. external circuit it is important that external capacitors are connected to both the input and output pins. for the input pin suitable bypass capacitors as shown in the application circuits should be connected especially in situations where a battery power source is used which may have a higher impedance. for the output pin, a suitable capacitor should also be connected especially in situations where the load is of a transient nature, in which case larger capacitor values should be selected to limit any output transient voltages. thermal considerations the maximum power dissipation depends on the thermal resistance of the package, the pcb layout, the rate of the surrounding airfow and the difference between the junction and ambient temperature. the maximum power dissipation can be calculated using the following formula: p d(max) = (t j(max) C t a ) / ja where t j(max) is the maximum junction temperature, t a is the ambient temperature and ja is the junction- to-ambient thermal resistance of the ic package in degrees per watt. the following table shows the ja values for various package types. package ja value c/w sot89-3 200c/w to92-3 200c/w 8sop-ep 125c/w for maximum operating rating conditions, the maximum junction temperature is 150c. however, it is recommended that the maximum junction temperature does not exceed 125c during normal operation to maintain an adequate margin for device reliability. the derating curves of different packages for maximum power dissipation are as follows: 25 50 75 100 125 150 0 0.2 0.4 0.6 0.8 1.0 sot89-3, to92-3 0 ambient temperature ( o c) maximum power dissipation (w) 8sop-ep 0.8w 0.5w power dissipation calculation in order to keep the device within its operating limits and to maintain a regulated output voltage, the power dissipation of the device, given by p d , must not exceed the maximum power dissipation, given by p d(max) . therefore p d p d(max) . from the diagram it can be seen that almost all of this power is generated across the pass transistor which is acting like a variable resistor in series with the load to keep the output voltage constant. this generated power which will appear as heat, must never allow the device to exceed its maximum junction temperature. in practical applications the regulator may be called upon to provide both steady state and transient currents due to the transient nature of the load. although the device may be working well within its limits with its steady state current, care must be taken with transient loads which may cause the current to rise close to its maximum current value. care must be taken with transient loads and currents as this will result in device junction temperature rises which must not exceed the maximum junction temperature. with both steady state and transient currents, the important current to consider is the average or more precisely the rms current which is the value of current that will appear as heat generated in the device. the following diagram shows how the average current relates to the transient currents. time i load i load(avg)
rev. 1.30 12 april 15, 2016 ht73xx-7 as the quiescent current of the device is very small it can generally be ignored and as a result the input current can be assumed to be equal to the output current. therefore the power dissipation of the device, p d , can be calculated as the voltage drop across the input and output multiplied by the current, given by the equation, p d = (v in C v out ) i in . as the input current is also equal to the load current the power dissipation p d = (v in C v out ) i load . however, with transient load currents, p d = (v in C v out ) i load(avg) as shown in the fgure. vref vin gnd out vfb v in common v out i in common i load ce application circuits basic circuits ht73xx-7 series v in 10 f 0.1 f v in common v out 10 f 0.1 f v out common c3 c1 c2 c4 gnd v ce off on high output current positive voltage regulator ht73xx-7 series v in 10 f 0.1 f v in common v out 10 f 0.1 f v out common c3 c1 c2 c4 tr1 r1 gnd v ce off on
rev. 1.30 13 april 15, 2016 ht73xx-7 circuit for increasing output voltage v ce ht73xx-7 series v in 10 f 0.1 f v in v out 10 f 0.1 f v out c3 c1 c2 c4 v xx common common r1 r2 i ss v out = v xx (1+r2/r1) + i ss r2 gnd off on circuit for increasing output voltage v ce ht73xx-7 series v in 10 f 0.1 f v in v out 10 f 0.1 f v out c3 c1 c2 c4 v xx common common r1 d1 i ss v out = v xx + v d1 gnd off on constant current regulator v ce ht73xx-7 series v in 10 f 0.1 f v in v out 10 f 0.1 f v out c3 c1 c2 c4 v xx common common ra rl i ss i out = v xx / ra + i ss i out gnd off on
rev. 1.30 14 april 15, 2016 ht73xx-7 dual supply v ce ht73xx-7 series v in 10 f 0.1 f v in v out 10 f 0.1 f v out c3 c1 c5 c6 common d1 gnd r1 v out ht73xx-7 series v in v out gnd 10 f c2 0.1 f c4 common off on off on v ce
rev. 1.30 15 april 15, 2016 ht73xx-7 package information note that the package information provided here is for consultation purposes only. as this information may be updated at regular intervals users are reminded to consult the holtek website for the latest version of the package/ carton information . additional supplementary information with regard to packaging is listed below. click on the relevant section to be transferred to the relevant website page. ? further package information (include outline dimensions, product tape and reel specifcations) ? packing meterials information ? carton information
rev. 1.30 16 april 15, 2016 ht73xx-7 8-pin sop-ep outline dimensions symbol dimensions in inch min. nom. max. a 0.236 bsc b 0.154 bsc c 0.012 0.020 c' 0.193 bsc d 0.069 d1 0.059 e 0.050 bsc e2 0.039 f 0.004 0.010 g 0.016 0.050 h 0.004 0.010 0 8 symbol dimensions in mm min. nom. max. a 6.00 bsc b 3.90 bsc c 0.31 0.51 c' 4.90 bsc d 1.75 d1 1.50 e 1.27 bsc e2 1.00 f 0.10 0.25 g 0.40 1.27 h 0.10 0.25 0 8
rev. 1.30 17 april 15, 2016 ht73xx-7 3-pin sot89-3 outline dimensions symbol dimensions in inch min. nom. max. a 0.173 0.181 b 0.053 0.072 c 0.090 0.102 d 0.035 0.047 e 0.155 0.167 f 0.014 0.019 g 0.017 0.022 h 0.059 bsc i 0.055 0.063 j 0.014 0.017 symbol dimensions in mm min. nom. max. a 4.40 4.60 b 1.35 1.83 c 2.29 2.60 d 0.89 1.20 e 3.94 4.25 f 0.36 0.48 g 0.44 0.56 h 1.50 bsc i 1.40 1.60 j 0.35 0.44
rev. 1.30 18 april 15, 2016 ht73xx-7 3-pin to92-3 outline dimensions symbol dimensions in inch min. nom. max. a 0.173 0.180 0.205 b 0.170 0.210 c 0.500 0.580 d 0.015 bsc e 0.010 bsc f 0.050 bsc g 0.035 bsc h 0.125 0.142 0.165 symbol dimensions in mm min. nom. max. a 4.39 4.57 5.21 b 4.32 5.33 c 12.70 14.73 d 0.38 bsc e 2.54 bsc f 1.27 bsc g 0.89 bsc h 3.18 3.61 4.19
rev. 1.30 19 april 15, 2016 ht73xx-7 copyright ? 2016 by holtek semiconductor inc. the information appearing in this data sheet is believed to be accurate at the time of publication. however, holtek assumes no responsibility arising from the use of the specifcations described. the applications mentioned herein are used solely for the purpose of illustration and holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. holtek's products are not authorized for use as critical components in life support devices or systems. holtek reserves the right to alter its products without prior notifcation. for the most up-to-date information, please visit our web site at http://www.holtek.com.tw/en/home.

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