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! 0#$(3, ! 3
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! ="  221 d  !3,   dt c dv i c 1.8v 100 ua err = = err cs in ho in t r t on t f t off ho 50% 50% 90% 90% 10% 10% cs t cs ho 50% 90% cs t cs out 50% 90% cs t err err 50% 50% 1.8v dt  
  
 www.irf.com 5 0.00 1.00 2.00 3.00 4.00 5.00 -50 -25 0 25 50 75 100 125 temperature (c) err to output shutdown delay time ( s) max. typ. 0 100 200 300 400 500 -50 -25 0 25 50 75 100 125 temperature (c) turn-off delay time (ns) max. typ. 0 100 200 300 400 500 -50 -25 0 25 50 75 100 125 temperature (c) turn-on delay time (ns) max. typ.
! 9%(!(3 d( 3 ! !
 ! 98(!(3 d  
! <%( !(3 d( 3 ! !
! <8( !(3  d  
! ?8 22   &d  
! ?% 22  &d( 3 ! ! 0 100 200 300 400 500 10 12 14 16 18 20 v bias supply voltage (v) turn-on time (ns) max. typ. 0 100 200 300 400 500 10 12 14 16 18 20 v bias supply voltage (v) turn-off time (ns) max. typ. 0.00 1.00 2.00 3.00 4.00 5.00 10 12 14 16 18 20 v bias supply voltage (v) err to output shutdown delay time ( s) max. typ.
 6 www.irf.com
! 0% a0b#(!  d( 3 ! !
!  08 a0b#(!  d  
! 0%( !2 ( 3 d( 3 ! !
! 008(! 
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! 08(!2 ( 3 d   0 20 40 60 80 100 -50 -25 0 25 50 75 100 125 temperature (c) turn-on rise time (ns) max. typ. 0 20 40 60 80 100 10 12 14 16 18 20 v bias supply voltage (v) turn-on rise time (ns) max. typ. 0 10 20 30 40 50 10 12 14 16 18 20 v bias supply voltage (v) turn-off fall time (ns) max. typ. 0.0 3.0 6.0 9.0 12.0 15.0 -50 -25 0 25 50 75 100 125 temperature (c) logic "1" input threshold (v) min. 0.0 3.0 6.0 9.0 12.0 15.0 5 7.5 10 12.5 15 17.5 20 v dd logic supply voltage (v) logic "1" input threshold (v) min.
! 00%(!
(3  d( 3 ! ! 0 20 40 60 80 100 -50 -25 0 25 50 75 100 125 temperature (c) turn-off fall time (ns) max. typ.
 www.irf.com 7 0.00 1.00 2.00 3.00 4.00 5.00 -50 -25 0 25 50 75 100 125 temperature (c) logic "1" input threshold (v) min.
! 0% a0b#(!  d( 3 !  !
! 08 a0b#(!  d  
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! 0%"  22* gd( 3 ! !
! 0% ab#(!  d( 3 !  !
! 08 ab#(!  d   0.0 4.0 8.0 12.0 16.0 20.0 10 12 14 16 18 20 v bias supply voltage (v) cs to err pull-up delay time ( s) max. typ. 0.0 4.0 8.0 12.0 16.0 20.0 -50 -25 0 25 50 75 100 125 temperature (c) cs to err pull-up delay time ( s) max. typ. 0.00 1.00 2.00 3.00 4.00 5.00 10 12 14 16 18 20 v cc logic supply voltage (v) logic "1" input threshold (v) min. 0.00 1.00 2.00 3.00 4.00 5.00 10 12 14 16 18 20 v cc logic supply voltage (v) logic "0" input threshold (v) max. 0.00 1.00 2.00 3.00 4.00 5.00 -50 -25 0 25 50 75 100 125 temperature (c) logic "0" input threshold (v) max.
 8 www.irf.com 0.00 0.20 0.40 0.60 0.80 1.00 -50 -25 0 25 50 75 100 125 temperature (c) high level output voltage (v) max. 0 100 200 300 400 500 -50 -25 0 25 50 75 100 125 temperature (c) cs input positive going threshold (mv) min. typ. max.
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! 0<8"#(!  67d  
! 0=%"#(!  67d( 3 ! !
! 0=8"#(!  67d  
! 09% d d( 3 ! !
! 098 d d   0 100 200 300 400 500 10 12 14 16 18 20 v bs floating supply voltage (v) cs input positive going threshold (mv) min. typ. max. 0 100 200 300 400 500 -50 -25 0 25 50 75 100 125 temperature (c) cs input negative going threshold (mv) max. typ. min. 0 100 200 300 400 500 10 12 14 16 18 20 v bs floating supply voltage (v) cs input negative going threshold (mv ) min. typ. max. 0.00 0.20 0.40 0.60 0.80 1.00 10 12 14 16 18 20 v bs floating supply voltage (v) high level output voltage (v) max.
 www.irf.com 9 0.00 0.40 0.80 1.20 1.60 2.00 -50 -25 0 25 50 75 100 125 temperature (c) v bs supply current (ma) max. typ. 0 100 200 300 400 500 -50 -25 0 25 50 75 100 125 temperature (c) offset supply leakage current ( a) max. 0.00 0.20 0.40 0.60 0.80 1.00 -50 -25 0 25 50 75 100 125 temperature (c) low level output voltage (v) max.
!  %     "!!  d( 3 ! !
! 8  "!! d  
! 0?% & d d ( 3 ! !
! 0?8 & d d  
! 0%   "!! d( 3 ! !
! 08   "!! d   0.00 0.20 0.40 0.60 0.80 1.00 10 12 14 16 18 20 v bs floating supply voltage (v) low level output voltage (v) max. 0 100 200 300 400 500 0 100 200 300 400 500 v b boost voltage (v) offset supply leakage current ( a) max. 0.00 0.40 0.80 1.20 1.60 2.00 10 12 14 16 18 20 v bs floating supply voltage (v) v bs supply current (ma) max. typ.
 10 www.irf.com 0.00 1.00 2.00 3.00 4.00 5.00 -50 -25 0 25 50 75 100 125 temperature (c) logic "0" input bias current ( a) max. 0 5 10 15 20 25 -50 -25 0 25 50 75 100 125 temperature (c) logic "1" input bias current ( a) max. typ. 0.00 0.40 0.80 1.20 1.60 2.00 -50 -25 0 25 50 75 100 125 temperature (c) v cc supply current (ma) max. typ.
! % a0b#"!! d( 3 ! !
! 8 a0b#"!! d  
! %   "!! d( 3 ! !
! 8   "!! d  
! % ab#"!! d( 3 ! !
! 8 ab#"!! d   0.00 0.40 0.80 1.20 1.60 2.00 10 12 14 16 18 20 v cc logic supply voltage (v) v cc supply current (ma) max. typ. 0 5 10 15 20 25 10 12 14 16 18 20 v cc logic supply voltage (v) logic "1" input bias current ( a) max. typ. 0.00 1.00 2.00 3.00 4.00 5.00 10 12 14 16 18 20 v cc logic supply voltage (v) logic "0" input bias current ( a) max.
 www.irf.com 11 6.0 7.0 8.0 9.0 10.0 11.0 -50 -25 0 25 50 75 100 125 temperature (c) v bs undervoltage lockout + (v) max. typ. min. 0.00 1.00 2.00 3.00 4.00 5.00 -50 -25 0 25 50 75 100 125 temperature (c) "low" cs bias current ( a) max. 0.0 5.0 10.0 15.0 20.0 25.0 -50 -25 0 25 50 75 100 125 temperature (c) "high" cs bias current ( a) max. typ.
! =% a &b"8  "!! d( 3 ! !
!  =8a &b"8 "!! d  
! %ab"8 "!! d( 3 ! !
! 8ab"8 "!! d  
! <  g !d    67d( 3 ! !
! 9  g !d   6 7d( 3 ! ! 0.0 5.0 10.0 15.0 20.0 25.0 10 12 14 16 18 20 v bs floating supply voltage (v) "high" cs bias current ( a) max. typ. 0.00 1.00 2.00 3.00 4.00 5.00 10 12 14 16 18 20 v bs floating supply voltage (v) "low" cs bias current ( a) max. 6.0 7.0 8.0 9.0 10.0 11.0 -50 -25 0 25 50 75 100 125 temperature (c) vbs undervoltage lockout - (v) max. typ. min.
 12 www.irf.com 0 50 100 150 200 250 -50 -25 0 25 50 75 100 125 temperature (c) err timing charge current ( a) max. typ. min. 6.0 7.0 8.0 9.0 10.0 11.0 -50 -25 0 25 50 75 100 125 temperature (c) v cc undervoltage lockout + (v) max. typ. min.
! 0% 22(3" ! "!! d( 3  ! !
! 08 22(3" ! "!! d  
! ?  g !d    67d( 3 ! !
!   g !d   67d( 3 ! !
! % 22* g"!! d( 3 ! !
!  8 22* g"!! d   6.0 7.0 8.0 9.0 10.0 11.0 -50 -25 0 25 50 75 100 125 temperature (c) v cc undervoltage lockout - (v) max. typ. min. 0 50 100 150 200 250 10 12 14 16 18 20 v cc logic supply voltage (v) err timing charge current ( a) min. typ. max. 0.0 5.0 10.0 15.0 20.0 25.0 -50 -25 0 25 50 75 100 125 temperature (c) err pull-up current ( a) typ. min. 0.0 5.0 10.0 15.0 20.0 25.0 10 12 14 16 18 20 v cc logic supply voltage (v) err pull-up current ( a) min. typ.
 www.irf.com 13 0.00 1.00 2.00 3.00 4.00 5.00 -50 -25 0 25 50 75 100 125 temperature (c) output sink current (a) typ. min. 0.00 0.50 1.00 1.50 2.00 2.50 -50 -25 0 25 50 75 100 125 temperature (c) output source current (a) typ. min. 0 10 20 30 40 50 -50 -25 0 25 50 75 100 125 temperature (c) err pull-down current ( a) typ. min.
! % ! "!!  d( 3 ! !
! 8 ! "!! d  
! % 22* , &"!!  d( 3 ! !
! 8 22* , &"!! d  
! %+"!! d( 3 ! !
!  8+"!! d   0 10 20 30 40 50 10 12 14 16 18 20 v cc logic supply voltage (v) err pull-down current ( a) max. typ. 0.00 0.50 1.00 1.50 2.00 2.50 10 12 14 16 18 20 v bs floating supply voltage (v) output source current (a) min. typ. 0.00 1.00 2.00 3.00 4.00 5.00 10 12 14 16 18 20 v bs floating supply voltage (v) output sink current (a) min. typ.
 14 www.irf.com
! =%(!( 3 d#  
! =8(!(3 d#  
! <i :33  ;  d  d     0 100 200 300 400 500 5 7.5 10 12.5 15 input voltage (v) turn-on time (ns) typ. v cc = 15v 0 100 200 300 400 500 5 7.5 10 12.5 15 input voltage (v) turn-off time (ns) typ. v cc = 15v -15.00 -12.00 -9.00 -6.00 -3.00 0.00 10 12 14 16 18 20 v bs floating supply voltage (v) v s offset supply voltage (v) typ.
 www.irf.com 15   

 symbol description v cc logic and gate drive supply in logic input for gate driver output (ho), in phase with ho err serves multiple functions; status reporting, linear mode timing and cycle by cycle logic shutdown com logic ground v b high side floating supply ho high side gate drive output v s high side floating supply return cs current sense input to current sense comparator !

" # down sh ifters q r uv detect error timing pulse gen uv detect pu lse filter pre driver pu lse gen 500 ns blank c ompar at or buffer 0.2 3v hv level v b ho v s cs r s r q v cc in up shifters com er r latched shutdown 1.8v 1.8v amplifer - + pulse filter v b s shift hv level shift
 16 www.irf.com 
 
 
  ir2125z ir2153z ir world headquarters: 233 kansas st., el segundo, california 90245, usa tel: (310) 252-7105 ir leominster : 205 crawford st., leominster, massachusetts 01453, usa tel: (978) 534-5776 tac fax: (310) 252-7903 visit us at www.irf.com for sales contact information . data and specifications subject to change without notice. 05/2011


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