ap438/9 pwm fan speed controller this datasheet contains new product information. anachip corp. reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. rev.1.0 oct.8, 2004 1/8 ? features - built-in 30khz osc provide 0%~100% pwm output - over temperature protector(otp) flag. (ap439 only). - open collect output(otp & pwm pins). - sip-4l package for ap438. - sip-5l, sop-8l package for ap439. ? applications - pc power. - dc fan ? general descriptions the ap438/9 series?s pwm output has built-in npn power transistor that controls the fan current & fan speed. ap439 built-in over temperature alarm flag. ? pin assignment pwm otp ap439 vcc gnd vin front view ap438 vcc gnd pwm vin sop-8l sip-5l sip-4l gnd 1 2 3 4 8 7 6 5 otp gnd vin ap439 gnd vcc gnd pwm ? pin descriptions name description v cc operating voltage input vin reference input voltage otp over temperature protect flag. pwm pwm open collect output. gnd ground ? ordering information part number p : sip-4/5l s : sop-8l ap43 x x x x 8 : ap438 9 : ap439 package packing blank : tube lead free blank : normal l : lead free package or bulk a : taping
ap438/9 pwm fan speed controller anachip corp. www.anachip.com.tw rev.1.0 oct.8, 2004 2/8 ? block diagrams vcc otp vin gnd + - oscillator pwm compartor compartor - + pwm ? absolute maximum ratings symbol parameter rating unit v cc supply voltage 20 v vin input voltage 20 v otp over temperature output. 20 v pwm output voltage to ground 20 v p d power dissipation (sip-4/5l) 0.5 w p d power dissipation (sop-8l) 0.8 w t st storage temperature range -65 to 150 o c t op operating temperature range 0 to +85 o c v op operating voltage range 7.0 to 18 v
ap438/9 pwm fan speed controller anachip corp. www.anachip.com.tw rev.1.0 oct.8, 2004 3/8 ? electrical characteristics unless otherwise specified, guaranteed for tj=25 o c , v cc =12v . symbol parameter conditions min. typ. max. units v cc supply voltage 7.0 - 18 v i in input bias current(v in pin) v in =2.0v, 0.5 2 7 ua v in input voltage range 0 vcc-0.5 v duty pwm duty cycle range 0 100 % v in(otp) otp detect voltage 3.3 3.4 3.5 v v in(release) otp release voltage 2.65 2.75 2.85 v v in(hs) otp detect voltage hysteresis 450 650 850 mv v in(pwm0) max input voltage of 0% pwm 0.75 0.8 0.85 v v in(pwm100) min input voltage of 100% pwm 2.80 2.85 2.90 v i s supply current output floating 2.5 ma v pwm(on) pwm transistor on voltage i pwm =500ma continued 1.1 1.3 v i pwm max. sink current 500 ma v otp(l) otp low level voltage i otp =20ma 0.3 0.6 v i otp max. sink current 20 ma f osc osc frequency 0 o c ap438/9 pwm fan speed controller anachip corp. www.anachip.com.tw rev.1.0 oct.8, 2004 4/8 ? typical characteristics pwm on voltage v.s. suppy voltage 1.06 1.065 1.07 1.075 1.08 1.085 1.09 1.095 1.1 7 8 9 10 11 12 13 14 15 16 17 18 suppy voltage (v) pwm on voltage (v) supply current v.s. suppy voltage 2.42 2.43 2.44 2.45 2.46 2.47 2.48 2.49 2.5 2.51 7 8 9 10 11 12 13 14 15 16 17 18 suppy current (ma) suppy voltage (v) pwm on voltage v.s. system loading 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 1.05 1.1 1.15 0 50 100 150 200 250 300 350 400 450 500 550 system loading (ma) pwm on voltage (v) frequency v.s. temperature 29.6 30 30.4 30.8 31.2 31.6 32 32.4 32.8 -40 -20 0 20 40 60 80 100 120 140 frequency (khz) temperature ( ) pwm on voltage v.s.temperature (io=100ma) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -10 0 10 20 30 40 50 60 70 80 90 100 pwm transistor on voltage(v) temperature ( ) pwm on voltage v.s. temperature (io=500ma) 1.025 1.03 1.035 1.04 1.045 1.05 1.055 1.06 1.065 -10 0 10 20 30 40 50 60 70 80 90 100 pwm transistor on voltage(v) temperature ( )
ap438/9 pwm fan speed controller anachip corp. www.anachip.com.tw rev.1.0 oct.8, 2004 5/8 ? marking information (1) sip4/5l ap43 x x xx x x date code xx : nth week x :year 8:438 9:439 id code: internal blank: normal l: lead free package (2) sop-8l sop-8l ( top view ) logo id code: internal year: "01" =2001 "02" =2002 xth week: 01~52 ~ 1 8 5 ap439 yy ww x x blank: normal l: lead free package 4 part number
ap438/9 pwm fan speed controller anachip corp. www.anachip.com.tw rev.1.0 oct.8, 2004 6/8 ? package information (1) package type: sip-4l ( unit: mm / [inch] ) 0.004] [0.144 0.1 3.65 0.004] 0.1[0.206 5.22 0.1 4.20 0.004] [0.165 0.001] [0.018 0.03 0.46 0.03 0.41 0.001] [0.016 0.03 3.81 0.001] [0.150 0.03 1.27 0.001] [0.050 0.1 1.42 0.004] [0.056 0.03 0.38 0.001] [0.015 1.25 14.25 0.049] [0.561 0.1 1.03 0.004] [0.041 0.1 1.55 0.004] [0.061 7 ~ 5 5 ~ 3 5 ~ 3 7 ~ 5 0.1 0.30 0.004] [0.012 ap438 0.2 max. [ 0.008 max.]
ap438/9 pwm fan speed controller anachip corp. www.anachip.com.tw rev.1.0 oct.8, 2004 7/8 ? package information (continued) (2) package type: sip-5l ( unit: mm / [inch] ) 4.2 ref [0.165 ref] 0.001] [0.016 0.03 0.41 0.001] [0.037 0.03 0.95 0.003] [0.144 0.1 3.65 0.003] [0.019 0.1 0.48 ] 003 . 0 206 . 0 [ 1 . 0 22 . 5 2-0.3c [0.079-0.012c] 0.001] [0.015 0.03 0.38 3 ~ 2 0.012] [0.563 0.3 14.3 0.003] [0.061 0.1 1.55 0.003] [0.029 0.1 0.73 5 ~ 2 5 ~ 2 3 ~ 2 ap439
ap438/9 pwm fan speed controller anachip corp. www.anachip.com.tw rev.1.0 oct.8, 2004 8/8 ? package information (continued) (3) package type: sop-8l view "a" l c view "a" h e a a2 a1 b e d 7 (4x) 0.015x45 7 (4x) y dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.40 1.60 1.75 0.055 0.063 0.069 a1 0.10 - 0.25 0.040 - 0.100 a2 1.30 1.45 1.50 0.051 0.057 0.059 b 0.33 0.41 0.51 0.013 0.016 0.020 c 0.19 0.20 0.25 0.0075 0.008 0.010 d 4.80 5.05 5.30 0.189 0.199 0.209 e 3.70 3.90 4.10 0.146 0.154 0.161 e - 1.27 - - 0.050 - h 5.79 5.99 6.20 0.228 0.236 0.244 l 0.38 0.71 1.27 0.015 0.028 0.050 y - - 0.10 - - 0.004 0 o - 8 o 0 o - 8 o
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