1 sheet no.: op06040a notice the content of data sheet is subject to change without prior notice. in the absence of confirmation by device specification sheets, sharp takes no responsibility for any defects that may occur in equipment using any sharp devices shown in catalogs, data books, etc. contact sharp in order to obtain the latest device specification sheets before usin g any sharp device. parameter symbol rating unit v in v adj v i-o 41 v v v output - com voltage input - output voltage error input voltage input voltage v out -1 v v c -0.3 to +40 v switching current i sw 1.5 a power dissipation p d 8 w *1 *2 *3 *4 *5 junction temperature t j 150 operating temperature t opr -40 to +85 storage temperature t stg -40 to +150 soldering temperature t sol 260(10s) ( ta=25 ) 40 7 *1 voltage between v in terminal and com terminal *2 voltage between v out terminal and com terminal *3 *4 p d :with infinite heat sink features outline dimensions (unit:mm) lead finish:lead-free solder plating (composition: sn2cu) applications absolute maximum ratings PQ1CZ21H2ZXH PQ1CZ21H2ZXH low dissipation current at off-state chopper regulator on/off control voltage voltage between on/off control and com terminal (0 to 0.25) 1 2 3 4 5 3 1. maximum switching current: 1.5a 2.low dissipation current at off-state(iqs:max.1ma) 3.built-in oscillation circuit (oscillation frequency:typ.100khz) 4.built-in overheat, overcurrent protection functions 5.variable output voltage (output variable range: v ref to 35v/?v ref to ?30v) [possible to select step-down output/inversing output according to external connection circuit] 6. pq1cz21h2zzh : sleeve-packaged product pq1cz21h2zph : tape-packaged product 7. rohs directive compliant 1.facsimiles 2.printers 3. switching power supplies *5 there is case that over heat protection function operates at the temperature t j =125 c to 150 c, so this item cannot be used in this temperature range. v in v out com(connected with heat sink) o adj on/off control ( ) : typical dimensions product mass:(0.3g) 1cz21h h lead finish identification mark 6.6 max. 5.20.5 9.7max. 5.50.5 2.5min. epoxy resin 0.5 +0.2 ?0.1 4?(1.27) 2.30.5 (0.5) (0.5) (1.7) (1.9)
2 sheet no.: op06040a electrical characteristics 80 100 120 khz 3 parameter symbol conditions min. max. unit output saturation voltage 0.9 1.5 v reference voltage 1.235 1.26 1.285 v reference voltage temperature fluctuation typ. i sw =1a v sat v ref t j =0 to 125 0.5 % load regulation |r eg l| i o =0.2 to 1a 0.1 1.5 % line regulation |r eg i| v in =8 to 35v 0.5 2.5 % % efficiency i o =1a 82 oscillation frequency f o oscillation frequency temperature fluctuation t j =0 to 125 % overcurrent detecting level i l 1.55 2 2.6 a 200 i c(on) v on threshold voltage v th(on) terminal=0v, terminal 0.8 1.5 2 stand-by current i sd v in =40v, terminal=0v output off-state dissipation current i qs 812ma fig.1 test circuit PQ1CZ21H2ZXH (unless otherwise specified,condition shall be v in =12v,i o =0.2a,v o =5v,on-off terminal=2.7v,t a =25 ) on-state current for control terminal=2.7v i c(off) off-state current for control terminal=0.4v 2 1 v in =40v, terminal=3v l d + + 470 f 1k a a a c in PQ1CZ21H2ZXH ? i c(on) i c(off) i o v o r 2 r 1 c o l hk-14d100-2110(made by toho co.) d ercf80-004(made by fuji electronics co.) on/off control logic output off on off 5 pin low high open fig.2 power dissipation vs.ambient temperature fig.3 overcurrent protection characteristics (typical value) 0 1 2 3 4 5 6 7 switching current peak note) oblique line portion:overheat protection may operate in this area ambient temperature t a (c) power dissipation p d (w) -40 0 255075 85 100 125 150 -25 10 8 5 0 p d :with infinite heat sink load i sd i qs v in output current i o (a) 0 0.5 1 1.5 2 2.5 3 3.5 4 output voltage v o (v) t a =25c v in =12v v o =5v
3 sheet no.: op06040a fig.4 efficiency vs. input voltage fig.5 output saturation voltage vs. switching current fig.7 load regulation vs. output current fig.8 line regulation vs. input voltage fig.9 oscillation frequency fluctuation vs. junction temperature PQ1CZ21H2ZXH fig.6 reference voltage fluctuation vs. junction temperature 50 60 70 80 90 100 0 0.2 0.4 0.6 0.8 1 1.2 0 0.5 1 1.5 2 -2 0 0.5 1 0 0.2 0.4 0.6 0.8 1.2 1 0 0.5 1 -10 switching current i sw (a) output saturation voltage v sat (v) t j =25c input voltage v in (v) 0 10203040 efficiency (%) t j =25c v o =12v, i o =1a v o =12v, i o =0.2a v o =5v, i o =1a v o =5v, i o =0.2a output current i o (a) t j =25c v in =12v v o =5v load regulation r eg l(%) ?0.5 junction temperature t j (c) -50 -25 0 25 50 75 100 125 reference voltage fluctuation (%) -1 0 1 2 v in =12v v o =5v junction temperature t j (c) -50 -25 0 25 50 75 100 125 v in =12v v o =5v oscillation frequency fluctuation (%) -8 -6 -4 -2 0 2 input voltage v in (v) 0 5 10 15 20 25 30 35 40 t j =25c v o =5v i o =0.2a line regulation regi (%) -0.5
4 sheet no.: op06040a fig.10 overcurrent detecting level fluctuation vs. junction temperature fig.11 on threshold voltage vs. junction temperature fig.13 power dissipation vs. ambient temperature (typical value) PQ1CZ21H2ZXH 0 2 4 6 0 0.5 1 1.5 2 5 6 7 8 9 10 no load fig.12 operating dissipation current vs. input voltage 0 0.5 1 1.5 -20 0 20 40 60 80 100 -40 120 125 85 2 cu area 740mm 2 cu area 180mm 2 cu area 100mm 2 cu area 70mm 2 cu area 36mm 2 material : glass-cloth epoxy resin size cu thickness mounting pcb pcb cu : 50501.6mm : 35 m junction temperature t j (c) -50 -25 0 25 50 75 100 125 on threshold voltage v th (on) (v) v in =12v junction temperature t j (c) -50 -25 0 25 50 75 100 125 overcurrent detecting level fluctuation (%) -8 -6 -4 -2 input voltage v in (v) 010203040 operating dissipation current i q ' (ma) t j =25c v o =5v i o =1a i o =0.2a ambient temperature t a (c) power dissipation p d (w)
5 sheet no.: op06040a fig.14 block diagram fig.15 step down type circuit diagram fig.16 polarity inversion type circuit diagram PQ1CZ21H2ZXH q s r _ + _ + 1 2 3 4 5 voltage regulator on/ off pwm comp. error amp. osc. f/f v ref overcurrent detection circuit overheat detection circuit v in v out com (common to heat sink) o adj on/off control on/off control signal load on/off control signal load PQ1CZ21H2ZXH d 5v + + ? v in 8 35v c in 100 f l 210 h r 2 3k r 1 1k v o c o 470 f PQ1CZ21H2ZXH d + + v in 5 30v c in 100 f l 130 h r 2 3k r 1 1k c o 2200 f v o -5v 0.47 1 f 100k 680k in case that polarity is reverse, depending on the conditions,there is cases that output voltage can not gain, please use this device after confirming the output voltage at the actual conditions. ?
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