Part Number Hot Search : 
2SD1646 SLA707 DILM7 AN2050 PE33646 ERIES 1DF0Q39 JANSR2
Product Description
Full Text Search
 

To Download LM385DM-25TR Datasheet File

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


  Datasheet File OCR Text:
  p roduction d ata s heet t he i nfinite p ower of i nnovation l in f inity m icroelectronics i nc . 11861 w estern a venue , g arden g rove , ca. 92841, 714-898-8121, f ax : 714-893-2570 1 copyright ? 1996 rev. 1.2a,2005-03-08 lm385 / 385b 1.2 & 2.5v m icropower v oltage r eference description the lm385/385b micropower voltage references are two terminal bandgap reference diodes designed and optimi zed for accurate low power operation in portab le and other power sensitive systems. operating currents are guaranteed from as low as 15a up to 20ma for the lx385/385b-1.2, and 20a up to 20ma for the lm385/385b-2.5, giving designers a great deal of flexibility in optimizing power consumption, noise and ultimate application performance. as an added feature, the references output impeda nce is extraordinarily low over the entire operating range of quiescent current. this enable s an extremely wide dynamic load range with little effect on the overall reference accuracy. the lm385 family is available in fixed 1.2v and 2.5v reference values. process and circuit design optimization provides for high accuracy with initial tolerance values of 1% for the lm385b-1.2, 2% for the lm385-1.2, 1.5% for the lm385b-2.5, and 3% for the lm385-2.5. complementing their initial accuracy, the bandgap reference is temperature compensated to deliver 20ppm performance over the 0 to 70c operating temperature range. the lm385 family from linfinity is a pin-to- pin replacement for the lm385/385b family of voltage references. important: for the most current data, consult microsemi ?s website: http://www.microsemi.com key features ? guaranteed 1% initial accuracy (lm385b-1.2) ? guaranteed 2.5% initial accuracy (lm385-1.2) ? guaranteed 1.5% initial accuracy (lm385b-2.5) ? guaranteed 3.0% initial accuracy (lm385-2.5) ? guaranteed 20a operating current ? low temperature coefficient ? operating current of 20a to 20ma ? very low dynamic impedance: 10 ? applications ? portable meter references ? portable test instruments ? battery operated systems ? current loop instrumentation product highlight 1.2v r eference 38k lm385-1.2v 5v 1.2v m icropower r eferenced f rom 9v b attery 200k lm385-2.5v 9v 2.5v package order info dm plastic soic 8-pin lp plastic to-92 3-pin t a ( c) reference voltage initial tolerance rohs compliant / pb-free transition dc: 0440 rohs compliant / pb-free transition dc: 0509 30mv lm385dm-1.2 lm385lp-1.2 1.2v 12mv lm385bdm-1.2 lm385blp-1.2 75mv lm385dm-2.5 lm385lp-2.5 0 to 70 2.5v 38mv lm385bdm-2.5 lm385blp-2.5 note: available in tape & reel. append the letters ?tr? to the part number. (i.e. lx385bdm-tr) obsolete product not recommended for new designs
1.2 & 2.5v m icropower v oltage r eference lm385/385b product databook 1996/1997 copyright ? 1996 rev. 1.2a 8/04 2 p roduction d ata s heet absolute maximum ratings (note 1) package pin outs reverse breakdown current .................................................................................... 30ma forward current ........................................................................................................ 10ma operating temperature range lm385 ........................................................................................................... 0c to 70c storage temperature range......................................................................-65c to 150c lead temperature (soldering, 10 seconds).............................................................300c thermal data dm package: thermal resistance-junction to ambient, q q q q q ja 165oc/w lp package: thermal resistance-junction to ambient, q q q q q ja 165oc/w the q ja numbers are guidelines for the thermal performance of the device/pc-board system. all of the above assume no ambient airflow. 1. anode 2. cathode 3. n/c lp package (top view) 8. 7. 6. 5. 1. 2. 3 . 4. n/c n/c n/c anode cathode n/c cathode n/c dm package (top view) note 1.values beyond which damage may occur. all voltages are specified with respect to ground, and all currents are positive into the specified terminal pb-free / rohs peak package solder reflow temp (40second max. exposure)................260c (+0, -5) 100% pb-free / rohs matte tin lead finish obsolete product not recommended for new designs
1.2 & 2.5v m icropower v oltage r eference lm385/385b product databook 1996/1997 3 copyright ? 1996 rev. 1.2a 8/04 p roduction d ata s heet electrical characteristics (unless otherwise specified, these specifications apply to t a = 25oc. typ number represents t a = 25oc value.) parameter symbol test conditions units lm385/385b-1.2 min. typ. max. 1.205 1.235 1.260 v 1.223 1.235 1.247 v 20 ppm/c 815a 1.5 mv 20 mv 1 w 60 v 20 ppm/khr reverse breakdown voltage lm385 v z i min i r i max lm385b i min i r i max average temperature coefficient d v z i r = 100a d temp minimum operating current i min reverse breakdown voltage chang e d v z i min i r 1ma with current d i r 1ma i r 20ma reverse dynamic impedance r z i r = 100a wide band noise (rms) e n i r = 100a, 10hz f 10khz long term stability d v z i r = 100a, t a = 25c 0.1c d time graph / curve index characteristic curves lm385/385b-1.2 figure # 1. response time 2. reverse characteristics 3. forward characteristics 4. temperature drift 5. reverse voltage change 6. reverse dynamic impedance 7. noise voltage parameter symbol test conditions units lm385/385b-2.5 min. typ. max. 2.425 2.500 2.575 v 2.462 2.500 2.538 v 20 ppm/c 13 20 a 2mv 20 mv 1 w 120 v 20 ppm/khr reverse breakdown voltage lm385 v z i min i r i max lm385b i min i r i max average temperature coefficient d v z i r = 100a d temp minimum operating current i min reverse breakdown voltage chang e d v z i min i r 1ma with current d i r 1ma i r 20ma reverse dynamic impedance r z i r = 100a, f = 20hz wide band noise (rms) e n i r = 100a, 10hz f 10khz long term stability d v z i r = 100a, t a = 25c 0.1c d time characteristic curves lm385/385b-2.5 figure # 8. response time 9. reverse characteristics 10. forward characteristics 11. temperature drift 12. reverse dynamic impedance 13. noise voltage lm385/385b-1.2 lm385/385b-2.5 obsolete product not recommended for new designs
1.2 & 2.5v m icropower v oltage r eference lm385/385b product databook 1996/1997 copyright ? 1996 rev. 1.2a 8/04 4 p roduction d ata s heet characteristic curves lm385/385b-1.2v figure 2. reverse characteristics figure 3. forward characteristics figure 4. temperature drift figure 1. response time reverse voltage - (v) reverse current - (a) 0.1 0 0.2 0.4 0.6 0.8 1.0 1 10 100 t a = 0 to 70c 1.2 1.4 0 forward current - (ma) forward voltage - (v) 0.4 0.01 0.1 1 10 100 0.8 1.2 t a = 25c temperature - (c) reference voltage - (v) 1.226 02030406070 1.23 1.236 1.242 1.232 1.24 10 50 1.228 1.234 1.238 i r = 100a time - (s) output voltage 0 5v 0 1.0v input voltage 0.5v 1.5v v in v out 36k 0 50 100 500 550 obsolete product not recommended for new designs
1.2 & 2.5v m icropower v oltage r eference lm385/385b product databook 1996/1997 5 copyright ? 1996 rev. 1.2a 8/04 p roduction d ata s heet characteristic curves lm385/385b-1.2v figure 6. reverse dynamic impedance figure 7. noise voltage figure 5. reverse voltage change 0.1 (f) frequency - (hz) dynamic impedance - ( w ) 1 10 100 1k 10k 100k 10 1000 t a = 25c i r = 100a 100 100 (f) frequency - (hz) (v n ) noise voltage - (nv/ hz) 300 10 100 1k 10k 100 k 600 700 400 500 i r = 100a t a = 25c 200 800 reverse current - (ma) output voltage change - (mv) -4 0.01 0.1 1 10 100 0 6 12 2 10 -2 4 8 14 16 t a = 0 to 70c obsolete product not recommended for new designs
1.2 & 2.5v m icropower v oltage r eference lm385/385b product databook 1996/1997 copyright ? 1996 rev. 1.2a 8/04 6 p roduction d ata s heet characteristic curves lm385/385b-2.5v figure 9. reverse characteristics figure 10. forward characteristics figure 11. temperature drift figure 8. response time reverse voltage - (v) reverse current - (a) 0.1 0 1.0 2.0 3.0 4.0 5.0 1 10 100 t a = 25c forward current - (ma) forward voltage - (v) 0 0.001 0.01 0.1 1 10 100 0.2 0.6 1.0 t a = 25c 0.4 0.8 temperature - (c) reference voltage - (v) 2.48 -40 0 20 40 80 100 2.49 2.505 2.52 2.495 2.515 20 60 2.485 2.5 2.51 time - ( 100s/div. ) output voltage 0 5 0 2.0v 4.0v input voltage t a = 25c v in v out 24k obsolete product not recommended for new designs
1.2 & 2.5v m icropower v oltage r eference lm385/385b product databook 1996/1997 7 copyright ? 1996 rev. 1.2a 8/04 p roduction d ata s heet characteristic curves lm385/385b-2.5v figure 13. noise voltage figure 12. reverse dynamic impedance 300 (f) frequency - (hz) (v n ) noise voltage - (nv/ hz) 600 10 100 1k 10k 100k 1500 1800 900 1200 i r = 100a t a = 25c (f) frequency - (hz) dynamic impedance - ( w ) 0.1 10 100 1k 100 k 10 100 1 10k t a = 25c i r = 100a obsolete product not recommended for new designs


▲Up To Search▲   

 
Price & Availability of LM385DM-25TR

All Rights Reserved © IC-ON-LINE 2003 - 2022  

[Add Bookmark] [Contact Us] [Link exchange] [Privacy policy]
Mirror Sites :  [www.datasheet.hk]   [www.maxim4u.com]  [www.ic-on-line.cn] [www.ic-on-line.com] [www.ic-on-line.net] [www.alldatasheet.com.cn] [www.gdcy.com]  [www.gdcy.net]


 . . . . .
  We use cookies to deliver the best possible web experience and assist with our advertising efforts. By continuing to use this site, you consent to the use of cookies. For more information on cookies, please take a look at our Privacy Policy. X