device description the ZSAT600 is an enhanced three terminal fixed positive 6 volt regulator. the device is designed particularly for use in satellite receiver low noise blocks where a high degree of supply rejection is required to extended frequencies. the device has been improved to give superior performance with ripple rejection of 62db up to 22khz , and 37db up to 200khz. the device features internal circuit current limit and thermal shutdown making it almost impossible to destroy. the ZSAT600 shows performance characteristics superior to other local voltage regulators. the initial output voltage is maintained to within 2.5% with a quiescent current of typically 450 m a. line and load regulation is superior to that of other devices, with load current up to a maximum 200ma. for the lnb application the regulator is offered in a surface mount sot223 package which permits power dissipation up to 3 watts. additionally the device can be made available in an so8 surface mount package, as well as to92 for through hole application. the devices are suited to local voltage regulation applications, where problems could be encountered with distributed single source regulation, as well as more general voltage regulation applications. features enhanced ripple rejection - 62db at 22khz small outline so8 and sot223 packages to92 package 6 volt output output current upto 200ma tight initial tolerance low quiescent current -55 to 125c temperature range no external components internal thermal shutdown internal short circuit current limit applications satellite receivers low noise blocks 6 volt enhanced positive local voltage regulator issue 1 - august 1996 q14 q16 q17 q11 r7 r4 r3 q18 q19 r5 q20 q13 q25 q4 q5 q1 r1 q3 c1 q6 q7 r2 q8 r14 q10 r9 r13 v in v out gnd r6 q9 q12 q21 schematic diagram ZSAT600 4-305
absolute maximum rating input voltage 20v output current(i o ) 200ma operating temperature -55 to 125c storage temperature -65 to 150c power dissipation (t amb =25c) sot223 3w(note 3) to92 600mw so8 780mw(note 3) ZSAT600 electrical characteristics test conditions (unless otherwise stated):t j =25c, i o =100ma, v in =9v symbol parameter conditions min. typ. max. units v o output voltage 5.85 6 6.15 v i o =1 to 200ma t j =-55 to 125c 5.76 6.24 v v in =8 to 20v i o =1 to 100ma t j =-55 to 125c 5.76 6.24 v d v o line regulation v in =8 to 20v 1040mv d v o load regulation i o =1 to 200ma i o =1 to 100ma 5 2 25 mv mv l q quiescent current t j =-55 to 125c 450 700 m a d l q quiescent current change i o =1 to 200ma v in =8 to 20v 60 100 m a m a v n output noise voltage f=10hz to 10khz 90 m v rms d v in / d v o ripple rejection v in =10 to 18v f=120hz-22khz 62 db d v in / d v o ripple rejection v in =10 to 18v f=200khz 37 db v in input voltage required to maintain regulation 8 7.7 v d v o / d t average temperature coefficient of v o i o =5.0ma t j =-55 to 125c 0.18 mv/c v gi reverse supply protection diode forward voltage i gi =500ma 2 v 4-306
ZSAT600 output voltage temperature coefficient line transient response peak output current v temperature output voltage (v) 5.96 5.97 5.98 5.99 6.00 6.01 6.02 -75 -25 25 75 125 5.95 5.94 6.03 io=5ma vin=10v temperature (c) output voltage deviation (v) 0 -0.2 +0.2 10 15 0 time (s) 40 80 cout=0 io=100ma dvin/dt=5v/s 20 60 input voltage output voltage deviation short-circuit output current (ma) 200 0 100 300 400 -75 -25 25 75 500 125 vo=0v vin=10v temperature (c) quiescent current v temperature quiescent current (a) 550 450 500 300 350 400 -75 -25 25 75 125 io=0 vin=10v load transient response dropout voltage v temperature dropout voltage (v) 0 0.5 1.0 1.5 2.0 2.5 -75 -25 25 75 125 io=200ma io=100ma temperature (c) output voltage deviation (v) -0.2 0 +0.2 dio/dt=1a/s vin=10v cout=0 0 time (us) 20 40 60 80 100ma 0ma load current output voltage deviation temperature (c) typical characteristics 4-307
ZSAT600 typical characteristics notes: 1. the maximum operating input voltage and output current of the device will be governed by the maximum power dissipation of the selected package. maximum package power dissipation is specified at 25 c and must be linearly derated to zero at t amb =125c. 2. the given data represents pulse test conditions with junction temperatures as indicated at the initiation of the test. continuous operation of the devices with the stated conditions might exceed the power dissipation limits of the chosen package. 3. maximum power dissipation, for the so8 and sot223 packages, is calculated assuming that the device is mounted on a pcb measuring 2 inches square. 4 . the shut down feature of the device operates if its temperature exceeds its design limit as might occur during external faults, short circuits etc. if the regulator is supplied from an inductive source, a large voltage transient, on the regulator input, can result should the shut down circuit operate. it is advised that a capacitor (1 m f or greater) should be applied across the regulator input to ensure that the maximum voltage rating of the device is not exceeded under shutdown conditions. 5. hf stability the ZSAT600 is guaranteed stable without an input or output capacitor. however if an output capacitor is used then this should be a total value of at least 100nf and should be accompanied by an input capacitor of 200nf or greater, wired in close proximity to the regulator if stability is to be ensured. ripple rejection v ripple frequency frequency (hz) output impedance v frequency output impedance (ohms) 1.0 0.01 0.1 100 1k 10k 100k io=100ma vin=10v ripple rejection (db) ripple frequency (hz) 0 10 20 30 40 50 60 100 1k 10k 100k 1m 70 80 4-308
applications ZSAT600 fixed output regulator adjustable output regulator input output gnd zsr*** input output gnd zsr*** r1 r2 iq vo= vreg + (vreg/r1 + iq)r2 current regulator input output zsr*** r1 iq io= (vreg/r1) + iq 4-309
connection diagrams part number package part mark ZSAT600n8 so8 ZSAT600 ZSAT600g sot223 ZSAT600 ZSAT600c to92 ZSAT600 ordering information ZSAT600 to92 package suffix C c bottom view so8 package suffix C n8 top view sot223 package suffix C g top view C pin 4 floating or connected to pin 2 4-310
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