View FAN7601B_3111743.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

february 2009 ? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev. 1.0.1 FAN7601B ? green current mode pwm controller FAN7601B green current mode pwm controller features ? green current mode pwm control ? low operating current: maximum 4ma ? burst mode operation ? internal high-voltage startup switch ? under-voltage lockout (uvlo): 12v/8v ? latch protection and soft-start function ? over-voltage protection: 19v ? operating frequency up to 300khz ? maximum duty cycle: 95% applications ? offline adapter applications ? auxiliary power supplies related resources ? an4129 ? green current mode pwm controller fan7601 description the FAN7601B is a pr ogrammable frequency green current mode pwm controller. it is specially designed for the offline adapter applications and the auxiliary power supplies that require high efficiency at light load and no load. the internal high-voltage startup switch and burst mode reduce the power loss. FAN7601B includes protections, such as latch protection and over-voltage protection. the latch protection can be used for over-voltage protection, thermal protection, and others. the soft-start prevents the output voltage overshoot at startup. ordering information part number operating junction temperature top mark eco status package packing method FAN7601Bn FAN7601B 8-dip rail FAN7601Bm 7601b 8-sop rail FAN7601Bmx 7601b 8-sop tape & reel FAN7601Bg 7601b 10-ssop rail FAN7601Bgx -40c to +150c 7601b rohs 10-ssop tape & reel for fairchild?s definition of ?green? eco status, please visit: http://www.fairchildsemi.com/com pany/green/rohs_green.html .
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 2 FAN7601B ? green current mode pwm controller block diagram + ? ? + ? + ? + ? + ? + ? figure 1. internal block diagram * ( ) is 10-ssop pin number
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 3 FAN7601B ? green current mode pwm controller pin configurations figure 2. 8-pin configuration (top view) figure 3. 10-pin configuration (top view) pin definitions pin # (8-pin) pin # (10-pin) name description 1 1 vstr startup 2 3 cs/fb current sense and feedback 3 4 latch/ss latch protection and soft-start 4 5 rt/ct oscillator timing 5 6 gnd ground 6 7 out gate drive output 7 8 vcc ic power supply 8 10 vref voltage reference
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 4 FAN7601B ? green current mode pwm controller absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the device may not function or be operable above the recommended operating conditions and stressing t he parts to these levels is not recommended. in addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. symbol parameter min. max. unit v cc supply voltage 20 v v cs/fb input voltage cs/fb -0.3 20.0 v t stg storage temperature -55 +150 c t j recommended operating junction temperature -40 +150 c i o output current 250 ma v str v str input voltage 500 v v esd_hbm electrostatic discharge capability, human body model jesd22-a114 (all pins except vstr pin) 2 kv v esd_mm electrostatic discharge capability, machine model, jesd22-a115 300 v thermal impedance symbol parameter value unit 8-dip 100 8-sop 180 ja thermal resistance, junction-to-ambient 10-ssop 130 c/w
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 5 FAN7601B ? green current mode pwm controller electrical characteristics t a =-25 c~125 c, v cc =14v, r t =9.5k , c t =2.2nf unless otherwise specified. symbol parameter conditions min. typ. max. unit reference section v ref reference output voltage i o =1ma 4.85 5.00 5.15 v v ref1 line regulation v cc =10v~18v 10 20 mv v ref2 load regulation i o =1ma ~ 10ma 20 30 mv oscillator section f osc initial accuracy 90 100 110 khz st v voltage stability v cc =10v~18v 1.0 1.5 % v osc amplitude v pin4 peak-to-peak 1.25 v pwm section v cs/fb1 cs/fb threshold voltage1 0.9 1.0 1.1 v d max maximum duty cycle t a =25c 92 95 98 % d min minimum duty cycle 0 % burst mode section v cs/fb2 cs/fb threshold voltage2 (1) 0.77 0.97 1.17 v v cs/fb3 cs/fb threshold voltage3 (1) 0.7 0.9 1.1 v soft-start section i ss soft-start current v pin3 =gnd 9 12 15 a v sl soft-start limit voltage (2) i ss =1 a 1.2 1.5 1.8 v protection section v latch latch voltage 2.25 2.50 2.75 v v ovp over-voltage protection 18 19 20 v uvlo section v th start threshold voltage 11 12 13 v v tl minimum operating voltage 7 8 9 v total current section i op operating supply current 3 4 ma output section v ol low output voltage t a =25 c, i o =100ma 2.0 2.5 v v oh high output voltage t a =25 c, i o =-100ma 11.5 12.0 14.0 v t r rising time (1) t a =25 c, c i =1nf 45 150 ns t f falling time (1) t a =25 c, c i =1nf 35 150 ns startup section i str v str startup current v str =30v, t a =25c 0.5 1.0 1.5 ma notes: 1. these parameters, although guaranteed, are not 100% tested in production. 2. it is recommended to connect a 1m resistor between the latch/ss pin and gnd to prevent abnormal operation of the latch protection by noise coupling.
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 6 FAN7601B ? green current mode pwm controller typical performance characteristics 4.95 4.97 4.99 5.01 5.03 5.05 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() vref (v) 0 0.5 1 1.5 2 2.5 3 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() supply current icc (ma) figure 4. trimmed reference voltage figure 5. supply current 10 10.5 11 11.5 12 12.5 13 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() vcc start threshold vth (v) 7 7.5 8 8.5 9 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() vcc stop threshold vtl (v) figure 6. v cc start threshold voltage figure 7. v cc stop threshold voltage 85 90 95 100 105 110 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() oscillator frequency fos c (khz) 90 92 94 96 98 100 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() maximum duty cycle dmax (%) figure 8. oscillator frequency figure 9. maximum duty cycle 2.3 2.4 2.5 2.6 2.7 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() oscillator high threshold vrh (v) 1.15 1.2 1.25 1.3 1.35 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() oscillator low threshold vrl (v) figure 10. oscillator high threshold voltage figure 11. oscillator low threshold voltage
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 7 FAN7601B ? green current mode pwm controller typical performance characteristics (continued) 0 0.4 0.8 1.2 1.6 2 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() start up current istr (ma) 18 18.4 18.8 19.2 19.6 20 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() over voltage protection vov p (v) figure 12. startup current figure 13. over-voltage protection level 2.2 2.3 2.4 2.5 2.6 2.7 2.8 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() latch protection vlatc h (v) 9 10 11 12 13 14 -45 -25 -15 0 25 50 80 100 125 140 junction temperature() soft start current iso f (ua) figure 14. latch protection voltage figure 15. soft-start current ct= 1 10 100 1000 5k 15k 25k 35k 45k rt[kohm] frequency[khz ] 10nf 8.2nf 4.7nf 3.3nf 2.2nf 1nf 820pf 680pf figure 16. oscillator frequency characteristic
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 8 FAN7601B ? green current mode pwm controller physical dimensions c 7 typ 7 typ .430 max [10.92] b a .400 .373 [ 10.15 9.46 ] .250.005 [6.350.13] .036 [0.9 typ] .070 .045 [ 1.78 1.14 ] .100 [2.54] .300 [7.62] .060 max [1.52] .310.010 [7.870.25] .130.005 [3.30.13] .210 max [5.33] .140 .125 [ 3.55 3.17 ] .015 min [0.38] .021 .015 [ 0.53 0.37 ] .010 +.005 -.000 [ 0.254 +0.127 -0.000 ] pin #1 pin #1 (.032) [r0.813] (.092) [?2.337] top view option 1 top view option 2 .001[.025] c n08erevg c. does not include mold flash or protrusions. dambar protrusions shall not exceed d. does not include dambar protrusions. b. controling dimensions are in inches a. conforms to jedec registration ms-001, mold flash or protrusions shall not exceed variations ba e. dimensioning and tolerancing notes: reference dimensions are in millimeters .010 inches or 0.25mm. .010 inches or 0.25mm. per asme y14.5m-1994. figure 17. 8-lead, dual in-line package (dip) package drawings are provided as a service to customers considering fairchild components. drawings may change in any manner without notice. please note the revision and/or date on the drawing and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ .
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 9 FAN7601B ? green current mode pwm controller physical dimensions 8 0 see detail a notes: unless otherwise specified a) this package conforms to jedec ms-012, variation aa, issue c, b) all dimensions are in millimeters. c) dimensions do not include mold flash or burrs. d) landpattern standard: soic127p600x175-8m. e) drawing filename: m08arev13 land pattern recommendation seating plane 0.10 c c gage plane x 45 detail a scale: 2:1 pin one indicator 4 8 1 c m ba 0.25 b 5 a 5.60 0.65 1.75 1.27 6.20 5.80 3.81 4.00 3.80 5.00 4.80 (0.33) 1.27 0.51 0.33 0.25 0.10 1.75 max 0.25 0.19 0.36 0.50 0.25 r0.10 r0.10 0.90 0.406 (1.04) option a - bevel edge option b - no bevel edge figure 18. 8-lead, small outline package (sop) package drawings are provided as a service to customers considering fairchild components. drawings may change in any manner without notice. please note the revision and/or date on the drawing and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ .
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 10 FAN7601B ? green current mode pwm controller physical dimensions notes: a) no drawing standard applies to this package b) all dimensions are in millimeters. c) dimensions are exclusive of burrs, mold flash, and tie bar extrusions. d) land pattern recommendation is fsc sourced. e) drawing file name and revision : mkt-msb10a,rev1 land pattern recommendation detail a top view side view end view 5.12 4.72 4.00 4.15 3.75 6.30 5.70 pin one indicator (1.00) #1 5 6 10 1.80 max 0.25 0.10 0.506 0.306 0.30 0.15 r0.20 see detail a seating plane gage plane 8?? r0.15 r0.15 (0.36) 0.70 0.30 (2.04) scale: 2:1 1.75 0.65 5.60 #1 (1.00) (0.26) figure 19. 10-lead, small outline package (ssop) package drawings are provided as a service to customers considering fairchild components. drawings may change in any manner without notice. please note the revision and/or date on the drawing and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ .
? 2008 fairchild semiconductor corporation www.fairchildsemi.com FAN7601B ? rev.1.0.1 11 FAN7601B ? green current mode pwm controller

▲Up To Search▲

Price & Availability of FAN7601B

	To Download FAN7601B Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .