nju7747/48 -1- ver.2004-12-22 low dropout voltage regulator general discription package outline nju7747/48 is a low dropout voltage regulator with on/off control. advanced cmos technology achieves ultra low quiescent current. sc-82ab package and 0.1 f small output capacitor make the nju7747/48 suitable for space conscious applications. NJU7748 features shunt switch which improves turn off response of output voltage when on/off control is used. features ultra low quiescent current iq=1.5 a typ.(i o =0ma) output capacitor with 0.1uf ceramic capacitor output current i o (max.)=100ma high precision output v o 1.0% low dropout voltage 0.17v typ. (i o =40ma, v o =3v version) with on/off control (active high) with output shunt switch only NJU7748 internal short circuit current limit cmos technology package outline sc-82ab pin configuration equivalent circuit v out gnd v in vref control current limit output control v out gnd v in vref control current limit output control nju7747 NJU7748 pin function 1.control 2.gnd 3. v out 4. v in nju7747/48f4 nju7747/48f 3 4 1 2
nju7747/48 - 2 - ver.2004-12-22 output voltage rank list (* : under development) device name v out device name v out nju774*f4-15 1.5v nju774*f4-28 2.8v nju774*f4-18 1.8v nju774*f4-03 3.0v nju774*f4-19 1.9v nju774*f4-33 3.3v nju774*f4-02 2.0v (*) nju774*f4-37 3.7v nju774*f4-25 2.5v nju774*f4-05 5.0v nju774*f4-27 2.7v absolute maximum ratings (ta=25 c) parameter symbol ratings unit input voltage v in +10 v control voltage v cont +10(*1) v power dissipation p d 250(*2) mw operating temperature to p r ? 40 +85 c storage temperature ts t g ? 40 +125 c output sink current at off-state(*3) i o 10 ma (*1) when input voltage is less than +10v, the absolute maximum control voltage is equal to the input voltage. (*2) mounted on glass epoxy board based on eia/jedec. (114.3x76.2x1.6mm: 2layers) (*3): this maximum rating is applied to NJU7748. electrical characteristics (v in =v o +1v, c in =0.1 f, c o =0.1 f, ta =2 5 c) parameter symbol test condition min. typ. max. unit output voltage v o i o =30ma ? 1.0% ? +1.0% v input voltage v in ? ? 6 v quiescent current i q i o =0ma, v cont =v in, except i cont ? 1.5 3.5 a quiescent current at control off i q(off) v cont =0v ? 0.1 1 a output current i o v o ? 0.3v 100 ? ? ma short circuit limit i lim v o =0v ? 25 ? ma line regulation ? v o / ? v in v in = v o +1v v o +6.0v(v o <3.0v) v in = v o +1v 9.0v(v o 3.0v), i o =30ma ? ? 0.30 %/v load regulation ? v o / ? v o io=0 100ma ? ? 0.15 %/ma io=40ma 1.5v v o 2.0v ? 0.19 0.60 v 2.0v v o 2.4v ? 0.19 0.29 v 2.5v v o 2.7v ? 0.18 0.27 v 2.8v v o 3.3v ? 0.17 0.26 v dropout voltage ? v i-o io=60ma 3.4v v o 5.0v ? 0.16 0.24 v average temperature coefficient of output voltage ? v o / ? ta ta = 0 85 c, i o =10ma ? 100 ? ppm/ c pull-down resistance r cont 2 5 10 m ? control voltage for on-state v cont(on) 1.6 ? v in v control voltage for off-state v cont(off) 0 ? 0.3 v pull-down resistance at off-state(*4) r o(off) v cont =0v (v o =3.0v version) ? 300 ? ? (*4) this electrical characteristics is applied to NJU7748. the above specification is a common specification for all voltages. therefore, it may be different from the individual specification for a specific output voltage.
nju7747/48 - 3 - ver.2004-12-22 test circuit v in v in v out control gnd 0.1 f i in i cont v cont i out v out v v a a 0.1 f (ceramic) nju7747/48 typical application 1 in case that on/off control is not required: v in v in v out control gnd c in 0.1 f v out c o 0.1 2 in use of on/off control v in v in v out control gnd c in 0.1 f v out c o 0.1 state of control terminal: ?h? output is enabled. ?l? or ?open? output is disabled.
nju7747/48 - 4 - ver.2004-12-22 power dissipation vs. ambient temperature nju7747/48f4 power dissipation (topr=-40 +85 ,tj=125 ) 0 100 200 300 400 500 -50 -25 0 25 50 75 100 ambient temperature ta( ) power dissipation p d (mw) on board(114.376.21.6mm, fr-4) [caution] the specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. the application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
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