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november 2010 doc id 6278 rev 5 1/14 14 pb137 positive voltage regulator for battery charger features reverse leakage current less than 10 a three terminal fixed version (13.7 v) output current in excess of 1.5 a available in 1 % (ac) selection at 25 c typical dropout voltage 2 v temperature range 0 to 150 c description the pb137 is a positive voltage regulator able to provide 1.5 a, at v o = 13.7 v and is intended as a charger for lead acid battery. the main feature is a reverse leakage current (max 10 a at t j = 0 to 40 c v i = floating and v o = 13.7 v). it is available in to-220 and it employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. if adequate heat-sinking is provided, they can deliver over 1 a output current. to-220 table 1. device summary order code package output voltage PB137ACV to-220 1.5 v www.st.com
contents pb137 2/14 doc id 6278 rev 5 contents 1 diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
pb137 diagram doc id 6278 rev 5 3/14 1 diagram figure 1. schematic diagram
pin configuration pb137 4/14 doc id 6278 rev 5 2 pin configuration figure 2. pin connections (top view)
pb137 application doc id 6278 rev 5 5/14 3 application figure 3. application circuit
maximum ratings pb137 6/14 doc id 6278 rev 5 4 maximum ratings note: absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these condition is not implied. table 2. absolute maximum ratings symbol parameter value unit v i dc input voltage 40 v i o output current inte rnally limited ma p tot power dissipation internally limited mw t stg storage temperature range - 65 to 150 c t op operating junction temperature range 0 to 150 c table 3. thermal data symbol parameter value unit r thjc thermal resistance junction-case 5 c/w r thja thermal resistance junction-ambient 50 c/w
pb137 electrical characteristics doc id 6278 rev 5 7/14 5 electrical characteristics refer to the test circuits, v i = 18 v, i o = 500 ma, t j = 0 to 150 c, c o = 10 f unless otherwise specified. table 4. electrical characteristics symbol parameter test conditions min. typ. max. unit v o output voltage t j = 25 c 13.56 13.7 13.84 v 13.43 13.7 13.97 v o line regulation v i = 16 to 28.7 v, t j = 25 c 60 150 mv v o load regulation i o = 5 to 1500 ma, t j = 25 c 65 100 mv i d quiescent current t j = 25 c 4 8 ma i d delta quiescent current vs. line v i = 16 to 28.7 v 4 ma i d delta quiescent current vs. load i o = 5 to 1000 ma 1.2 ma v d dropout voltage i o = 1 a, t j = 25 c 2.1 2.6 v i sc short circuit current v i - v o = 5 v, t j = 25 c 2.2 a en output noise voltage b = 10 hz to 10 khz, t j = 25 c 300 vrms svr supply voltage rejection f = 120 hz, t j = 25 c 58 db i rev reverse leakage current v o = 13.7 v, v i = floating, t j = 0 to 40 c 0.1 10 a s long term stability t j = 125 c, 1000 hrs 0.5 %
typical characteristics pb137 8/14 doc id 6278 rev 5 6 typical characteristics t j = 25c. figure 4. output voltage vs. temperature figure 5. output voltage vs. input voltage figure 6. output voltage vs. output current figure 7. load regulation vs. temperature figure 8. line regulation vs. temperature f igure 9. dropout voltage vs. temperature
pb137 typical characteristics doc id 6278 rev 5 9/14 figure 10. dropout voltage vs. output current figure 11. short circuit current vs. dropout voltage figure 12. short circuit current vs. temperature figure 13. reverse leakage current vs. temperature figure 14. quiescent current vs. temperature figure 15. quiescent current vs. output current
typical characteristics pb137 10/14 doc id 6278 rev 5 figure 16. quiescent current vs. input voltage figure 17. thermal protection figure 18. supply voltage rejection vs. output current figure 19. supply voltage rejection vs. temperature figure 20. line transient response figure 21. load transient response v i = 17 to 28.4 v, i o = 0.5 a, c o = 10 f v i = 18 v, i o = 5 to 1.5 a, c i = 1 f, c o = 10 f
pb137 package mechanical data doc id 6278 rev 5 11/14 7 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark.
package mechanical data pb137 12/14 doc id 6278 rev 5 dim. mm. inch. min. typ. max. min. typ. max. a 4.40 4.60 0.17 3 0.1 8 1 c1.2 3 1. 3 2 0.04 8 0.051 d 2.40 2.72 0.0 9 4 0.107 d1 1.27 0.050 e0.4 9 0.70 0.01 9 0.027 f 0.61 0. 88 0.024 0.0 3 4 f1 1.14 1.70 0.044 0.067 f2 1.14 1.70 0.044 0.067 g4. 9 5 5.15 0.1 9 4 0.20 3 g1 2.4 2.7 0.0 9 4 0.106 h2 10.0 10.40 0. 393 0.40 9 l2 16.4 0.645 l4 1 3 .0 14.0 0.511 0.551 l5 2.65 2. 9 5 0.104 0.116 l6 15.25 15.75 0.600 0.620 l7 6.2 6.6 0.244 0.260 l 93 .5 3 . 93 0.1 3 7 0.154 dia. 3 .75 3 . 8 5 0.147 0.151 to-220 mechanical data p011c
pb137 revision history doc id 6278 rev 5 13/14 8 revision history table 5. document revision history date revision changes 21-jun-2004 4 18-nov-2010 5 modified: r thjc value for to-220 table 3 on page 6 .
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