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rev. 1.00 1 august 26, 2015 rev. 1.00 pb august 26, 2015 ht73xx-1 30v, 250ma tinypower tm ldo features ? low power consumption ? low voltage drop ? low temperature coeffcient ? high input voltage - up to 30v ? output voltage accuracy: tolerance 3% ? over current protection ? to-92, sot89-3, and 8-pin sop-ep packages applications ? battery-powered equipment ? communication equipment ? audio/video equipment general description the ht 73xx-1 de vice se ries a re l ow po wer hi gh voltage regulators implemented in cmos technology which ha ve t he a dvantages of l ow vol tage dro p a nd low quiescent current. they allow input voltages as high as 30v . they are available with several fixed output voltages ranging from 2.1v to 5.0v . the soft- start function inhibits the problem of output overshoot during power on. although de signed pri marily a s fi xed vol tage regulators, t hese d evices c an b e u sed wi th e xternal components to obtain variable voltages and currents. selection table part no. output voltage package marking ht7321-1 2.1v to-92 sot89-3 8sop-ep 73xx-1 (for to-92, sot89-3) ht73xx-1 (for 8sop-ep) ht7323-1 2.3v ht7325-1 2.5v ht7327-1 2.7v ht7330-1 3.0v ht7333-1 3.3v ht7336-1 3.6v ht7340-1 4.0v HT7344-1 4.4v ht7350-1 5.0v note: xx stands for output voltages.
rev. 1.00 2 august 26, 2015 ht73xx-1 block diagram vref soft start vin gnd out pin assignment gnd vin out 1 23 73xx-1 vin nc nc gnd out nc nc nc ht73xx-1 8 sop-a (exposed pad) sot89-3 9 vin to-92 gnd vin vout 123 73xx-1 1 2 3 4 8 7 6 5 pin descriptions pin no. pin name pin description to-92 sot89-3 8sop-ep 1 1 5 gnd ground pin 2 2 8, 9 vin input pin 3 3 1 out output pin 2, 3, 4, 6, 7 nc no connection
rev. 1.00 3 august 26, 2015 ht73xx-1 absolute maximum ratings parameter value unit v in -0.3 to +33 v operating temperature range, t a -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 to-92 200 c/w sot89-3 200 c/w 8sop-ep 125 c/w power dissipation, p d(max) to-92 0.50 w sot89-3 0.50 w 8sop-ep 0.80 w 1rwh 3 '0 lv phdvxuhg dw 7 d recommended operating range parameter value unit v in v out +2 to 30 v electrical characteristics v in =(v out +2v), t a =+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 C3 3 % 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 i ss quiescent current i out =0ma 2.5 4.0 ua v in v out v out line regulation (v out +2v) v in 30v, i out =40ma 0.2 0.4 %/v ta v out v out temperature coeffcient i out =40ma, -40c < t a < 85c 100 ppm/c i ocp over current protection v in =12v 350 700 ma 1rwh 'ursrxw rowdjh lv ghqhg dv wkh lqsxw rowdjh plqxv wkh rxwsxw rowdjh wkdw surgxhv d kdqjh lq wkh rxwsxw rowdjh iurp wkh doxh dw 9 in out d od
rev. 1.00 4 august 26, 2015 ht73xx-1 typical performance characteristic test condition: v in =v out +2v, i out =10ma, c in =10f, c out =10f and t a =25oc, unless otherwise noted line regulation: ht7333-1 (i out =10ma) line regulation: ht7350-1 (i out =10ma) i ss vs v in : ht7333-1 (i out =0ma) i ss vs v in : ht7350-1 (i out =0ma) 0 40 80 120 160 200 0 50 100 150 200 250 i out (ma) i ss (ua) -40c +25c +85c i ss vs i out : ht7333-1 (v in =5.3v) i ss vs i out : ht7350-1 (v in =7.0v) 0 200 400 600 800 1000 1200 1400 0 50 100 150 200 250 i out (ma) v dif (mv) -40c +25c +85c 0 100 200 300 400 500 600 700 800 900 0 50 100 150 200 250 i out (ma) v dif (mv) -40c +25c +85c dropout voltage: ht7333-1 dropout voltage: ht7350-1
rev. 1.00 5 august 26, 2015 ht73xx-1 test condition: v in =v out +2v, i out =10ma, c in =10f, c out =10f and t a =25oc, unless otherwise noted load transient response: ht7333-1 (v in =5.3v, i out =0ma to 40ma) load transient response: ht7350-1 (v in =7.0v, i out =0ma to 40ma) load transient response: ht7333-1 (v in =5.3v, i out =40ma to 0ma) load transient response: ht7350-1 (v in =7.0v, i out =40ma to 0ma) line trasient response: ht7333-1 (i out =10ma) line trasient response: ht7350-1 (i out =10ma)
rev. 1.00 6 august 26, 2015 ht73xx-1 test condition: v in =v out +2v, i out =10ma, c in =10f, c out =10f and t a =25oc, unless otherwise noted line trasient response: ht7333-1 (i out =10ma) line trasient response: ht7350-1 (i out =10ma) line trasient response: ht7333-1 (i out =10ma) line trasient response: ht7350-1 (i out =10ma) line trasient response: ht7333-1 (i out =10ma) line trasient response: ht7350-1 (i out =10ma) power on response: ht7333-1 (i out =0ma, t rise =0.1ms) power on response: ht7350-1 (i out =0ma, t rise =0.1ms)
rev. 1.00 7 august 26, 2015 ht73xx-1 test condition: v in =v out +2v, i out =10ma, c in =10f, c out =10f and t a =25oc, unless otherwise noted power on response: ht7333-1 (i out =0ma, t rise =100ms) power on response: ht7350-1 (i out =0ma, t rise =100ms) power on response: ht7333-1 (i out =250ma, t rise =0.1ms) power on response: ht7350-1 (i out =250ma, t rise =0.1ms) power on response: ht7333-1 (i out =250ma, t rise =100ms) power on response: ht7350-1 (i out =250ma, t rise =100ms) power off response: ht7333-1 (i out =0ma, t fall =0.1ms) power off response: ht7350-1 (i out =0ma, t fall =0.1ms)
rev. 1.00 8 august 26, 2015 ht73xx-1 test condition: v in =v out +2v, i out =10ma, c in =10f, c out =10f and t a =25oc, unless otherwise noted power off response: ht7333-1 (i out =0ma, t fall =100ms) power off response: ht7350-1 (i out =0ma, t fall =100ms) power off response: ht7333-1 (i out =250ma, t fall =0.1ms) power off response: ht7350-1 (i out =250ma, t fall =0.1ms) power off response: ht7333-1 (i out =250ma, t fall =100ms) power off response: ht7350-1 (i out =250ma, t fall =100ms)
rev. 1.00 9 august 26, 2015 ht73xx-1 application information the de vices a re 3-t erminal l ow dropout se ries l inear voltage regulators. it is important 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 t he i nput a nd out put pi ns. for t he i nput pi n suitable bypass capacitors as shown in the application circuits should be connec ted espe cially i n si tuations where a battery power source is used which may have a higher impedence. for the output pin, a suitable capacitor should a lso be c onnected e specially i n situations where the load is of a transient nature, in which case lar ger capacitor values should be selected to limit any output transient voltages. thermal considerations the maximum pow er dis sipation depends on the thermal resistance of the ic package, the pcb layout, the rate of the surrounding airfow and the dif ference between the junction and ambient temperature. the maximum power dissipation can be calculated by the following formula: p d(max) = (t j(max) C t a ) / ja where t j(max) is the m aximum junct ion te mperature, t a is the ambient temperature and ja is the junction- to-ambient thermal res istance of the ic package in degrees per watt. the following table shows the ja values for various package types. package ja value o c/w sot89-3 200 o c/w to-92 200 o c/w 8sop-ep 125 o c/w for m aximum ope rating ra ting c onditions, t he maximum junction temperature is 150 c. however , it is recommended that the maximum junction temperature does not exceed 125 c during normal operation to maintain an adequate mar gin for device reliability. the derat ing curves of dif ferent 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, to-92 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 t he de vice, gi ven by p d , m ust not exceed t he ma ximum power di ssipation, gi ven by p d(max) . t herefore p d p d(max) . fr om t he d iagram i t 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. vref vin gnd out vfb v in common v out i in common i load in pra ctical a pplications t he re gulator m ay be c alled upon to provide both s teady s tate and trans ient currents d ue t o t he t ransient n ature o f t he l oad. although t he de vice m ay be worki ng we ll wi thin i ts 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. w ith 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) as the quiescent current of the device is very small it can generally be ignored and as a result the input cur - rent can be assumed to be equal to the output current. therefore the power dissipation of the device, p d , can be calcul ated 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 cur - rents, p d = (v in C v out ) i load(avg) as shown in the fgure.
rev. 1.00 10 august 26, 2015 ht73xx-1 application circuits basic circuits ht73xx-1 series v in 10uf 0.1uf v in common v out 10uf 0.1uf v out common c3 c1 c2 c4 gnd high output current positive voltage regulator ht73xx-1 series v in 10uf 0.1uf v in common v out 10uf 0.1uf v out common c3 c1 c2 c4 tr1 r1 gnd circuit for increasing output voltage ht73xx-1 series v in 10uf 0.1uf v in v out 10uf 0.1uf 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
rev. 1.00 11 august 26, 2015 ht73xx-1 circuit for increasing output voltage ht73xx-1 series v in 10uf 0.1uf v in v out 10uf 0.1uf v out c3 c1 c2 c4 v xx common common r1 d1 i ss v out = v xx + v d1 gnd constant current regulator ht73xx-1 series v in 10uf 0.1uf v in v out 10uf 0.1uf v out c3 c1 c2 c4 v xx common common ra rl i ss i out = v xx / ra + i ss i out gnd dual supply ht73xx-1 series v in 10uf 0.1uf v in v out 10uf 0.1uf v out c3 c1 c5 c6 common d1 gnd r1 v out ht73xx-1 series v in v out gnd 10uf c2 0.1uf c4 common
rev. 1.00 12 august 26, 2015 ht73xx-1 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. 1.00 13 august 26, 2015 ht73xx-1 3-pin to-92 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. 1.00 14 august 26, 2015 ht73xx-1 3-pin sot89 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. 1.00 15 august 26, 2015 ht73xx-1 8-pin sop-ep (150mil) 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 a 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 a 0 8
rev. 1.00 16 august 26, 2015 ht73xx-1 copyright ? 2015 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.

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