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300ma high psrr low dropout cmos linear regulator 2007-7-4 1 / 11 FSP2134 ? applications z cordless phones z cellular phones z bluetooth earphones z digital cameras z portable electronics z wlans z mp3 players ? pin configuration (bottom view) ? pin description ? block diagram pin number pin name pin function 1 in input 2 nc not connected 3 out output 4 byp bypass pin, need a 10f capacitor connected to gnd 5 gnd ground 6 en chip enable (active high) ? features z low dropout voltage: 180mv at 300ma (vo=3.3v) z quiescent current: typ. 65a z 2% voltage accuracy z high psrr: 70db at 1khz z thermal shutdown z current limiting z excellent line and load regulation z fast response z short circuit protection z low temperature coefficient z shutdown current: 0.5a z space saving usp6 package ? general description the FSP2134 series of positive voltage linear regulators feature low quiescent current (typ . 65a) and low dropout voltage, making them ideal for battery powered applications. their high psrr make them useful in applications where ac noise on the input power supply must be suppressed. space saving usp6 package is attractive for portable and handheld applications. they have both thermal shutdown and a current limit feature to prevent device failure from extreme operating conditions. they are stable with an output capacitor of 2.2f or greater.
300ma high psrr low dropout cmos linear regulator 2007-7-4 2 / 11 FSP2134 ? typical applications circuits ? absolute maximum ratings parameter rating unit input supply voltage +6 v output current 300 ma output pin voltage gnd-0.3 to vin+0.3 v esd rating class b internal power dissipation 100 mw operating temperature -40 to 85 c operating junction temperature -40 to 125 c storage temperature -65 to 150 c lead temperature (soldering, 5 sec) 300 c note: absolute maximum ratings are those values beyond which the life of a device may be impaired.
300ma high psrr low dropout cmos linear regulator 2007-7-4 3 / 11 FSP2134 ? electrical characteristics (v in = v o + 1v, c in = 1 f, c o = 2.2 f, t a = 25 c unless otherwise specified.) parameter symbol test conditions min typ max unit input voltage v in note1 5.5 v output voltage accuracy v o i o = 1ma -2 +2 % output current i o 300 note2 ma ground current i gnd i o = 1ma to 300ma 70 90 a quiescent current i q i o = 0ma 65 90 a i o = 1ma, v o < 2v v in =2.8v to 3.8v -0.15 0.1 0.15 i o = 1ma, 2 v o < 3.3v v in =v o + 0.5v to v o + 1v -0.1 0.03 0.1 line regulation lnr i o = 1ma, v o 3.3v v in =v o + 0.5v to v o + 1v -0.4 0.2 0.4 %/v load regulation error ldr i o = 1ma to 300ma -1 0.2 1 % temperature coefficient t c i o = 1ma 40 ppm/ c over temperature shutdown ots i o = 1ma 150 c over temperature hystersis oth i o = 1ma 30 c f=100hz 70 f= 1khz 70 power supply ripple rejection (with bypass cap.) psrr i o = 100ma c byp = 10nf v o =1.8v f= 10khz 50 f=100hz 70 f= 1khz 60 power supply ripple rejection (without bypass cap.) psrr i o = 100ma v o =1.8v f= 10khz 40 db v o = 1.8v 850 1100 2.5 v o < 3.3v 370 450 dropout voltage v do i o = 300ma v o 3.3v 180 230 mv en input high threshold v ih v in = 2.5v to 5v 1.5 v en input low threshold v il v in = 2.5v to 5v 0.3 v output noise v n c byp =10nf, f = 10hz to 100khz 50 v rms shutdown current i sd v en = 0v 0.01 1 a note 1 the minimum input voltage of the FSP2134 is deter mined by output voltage and dropout voltage. the minimum input voltage is defined as: v in(min) =v o +v drop note 2 output current is limited by p d , maximum i o =p d /(v in(max) -v o )
300ma high psrr low dropout cmos linear regulator 2007-7-4 4 / 11 FSP2134 ? application information capacitor selection and regulator stability similar to any low dropout regulator, the external capaci tors used with the FSP2134 must be carefully selected for regulator stability and performance. using a capacitor, c in , whose value is 1 f at the FSP2134 input pin, the amount of the capacitance can be increased without limit. please note that the distance between c in and the input pin of the FSP2134 should not exceed 0.5 inch. ceramic capacitors are suitable for the FSP2134. capacitors with larger values and lower esr provide better psrr and line-transient response. the FSP2134 is designed specifically to work with low esr ceramic output capacitors in order to save space and improve performance. using an output ceramic capacitor whose value is 2.2 f with esr 5m ? ensure stability. a 10nf bypass capacitor connected to byp pin is suggested for suppressing output noise. the capacitor, in series connection with an internal 200k ? resistor, forms a low-pass filter for noise reduction. increasing the capacitance will slightly decrease the output noise, but increase the start-up time. load transient considerations the figure11 shows the FSP2134 load transient response. it shows two components the output response: a dc shift from the output impedance due to the load current change and tr ansient response. the dc shift is quite small due to excellent load regulation of the FSP2134. the transient spik e, resulting from a step change in the load current from 1ma to 300ma, is 20mv. the esr of the output capacitor is cr itical to the transient spike. a larger capacitance along with smaller esr results in a smaller spike. shutdown input operation the FSP2134 is shutdown by pulling the en input low, and is turned on by tying the en i nput to vin or leaving the en input floating. internal p-channel pass transistor the FSP2134 features a 0.75 ? p-channel mosfet device as a pass transistor. the p-mos pass transistor enables the FSP2134 to consume only 65 a of ground current during low dropout, light load, or heavy load operations. this feature increase s the battery operation life time. dropout voltage a regulator?s minimum dropout voltage determines the lo west usable supply voltage. the FSP2134 has a typical 300mv dropout voltage. in battery power ed systems, this will determine the useful end-of-life battery voltage. current limit and short circuit protection the FSP2134 features a current limit, which monitors and cont rols the gate voltage of the pass transistor. the output current can be limited to 400ma by regulating the gate volt age. the FSP2134 also has a built-in short circuit current limit.
300ma high psrr low dropout cmos linear regulator 2007-7-4 5 / 11 FSP2134 ? typical performance characteristics (v in = v en , c in = 1 f, c o = 2.2 f , c byp =10nf t a = 25c unless otherwise specified.)
300ma high psrr low dropout cmos linear regulator 2007-7-4 6 / 11 FSP2134 ? typical performanc e characteristics continued (v in = v en , c in = 1 f, c o = 2.2 f , c byp =10nf t a = 25c unless otherwise specified.)
300ma high psrr low dropout cmos linear regulator 2007-7-4 7 / 11 FSP2134 ? typical performanc e characteristics continued (v in = v en , c in = 1 f, c o = 2.2 f , c byp =10nf t a = 25c unless otherwise specified.)
300ma high psrr low dropout cmos linear regulator 2007-7-4 8 / 11 FSP2134 ? typical performanc e characteristics continued (v in = v en , c in = 1 f, c o = 2.2 f , c byp =10nf t a = 25c unless otherwise specified.)
300ma high psrr low dropout cmos linear regulator 2007-7-4 9 / 11 FSP2134 ? typical performanc e characteristics continued (v in = v en , c in = 1 f, c o = 2.2 f , c byp =10nf t a = 25c unless otherwise specified.)
300ma high psrr low dropout cmos linear regulator 2007-7-4 10 / 11 FSP2134 ? ordering information ? marking information FSP2134xxxx package type: u: usp6 packing: a: tape & reel output voltage: 40: 4.0v 38: 3.8v 33: 3.3v 31: 3.1v 30: 3.0v 29: 2.9v 285: 2.85v 28: 2.8v 25: 2.5v 18: 1.8v 12: 1.2v temperature grade: d: -40~85 xxv ym xx: product code v: output voltage t: 4.0v s: 3.8v j: 3.3v r: 3.1v i: 3.0v q: 2.9v h: 2.85v g: 2.8v d: 2.5v c: 1.8v p: 1.2v date code: y: year (1=2001) m: month (1~9, o, n, d)
300ma high psrr low dropout cmos linear regulator 2007-7-4 11 / 11 FSP2134 ? package information

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