bay linear, inc 2418 armstrong street, livermore, ca 94550 tel: (925) 606-5950, fax: (925) 940- 9556 www.baylinear.com 250 ma cmos low dropout ldo b4250 pin connection ordering information -40 c to +125 c package part no. sot-23 b4250ck3 -x.x sot-89 b4250cr-x.x x.x = fixed output voltages from 2.0v to 6.0v description the b4250 series are a group of positive output voltage, three-pin regulators, which provide a high current even when the input/output voltage differential is small. low power consumption and high accuracy is achieved though cmos and programmable fuse technologies. output voltage: 2.0v to 6.0v in 0.1v increments. the b4250 consists of a high-precision voltage reference, an error correction circuit, and a current limited output driver. available in sot-23 (150mw) and sot-89 (500mw) packages minimizing the usage of board real state. features ? maximum output current: 250 ma. ? highly accurate: output voltage +/- 2%. (1%) ? cmos low power consumption. ? small input/output differential: 0.38v at 160ma (vout=3.3v) 0.12v at 100ma (vout=5v) ? pin-to-pin improve xc62fp/xc6201 applications ? battery powered equipment ? notebook pc, palmtops, pda ? portable cameras and video recorders ? reference voltage sources sot-23-3 (k3) top view v out v in v ss 3 2 1 top view sot-89 (r) 1 2 3 vss vin vout 2 vin bay linear bay linear bay linear bay linear inspire the linear power inspire the linear power inspire the linear power inspire the linear power
bay linear, inc 2418 armstrong street, livermore, ca 94550 tel: (925) 606-5950, fax: (925) 940- 9556 www.baylinear.com b4250 absolute maximum ratings parameter symbol ratings units input voltage v in 12 v output current i out 500 ma output voltage v out v ss -0.3 to v in 0.3 v continual total power dissipation sot-23 sot-89 pd 150 500 mw operating ambient temperature t opr -30 to 80 c storage temperature t stg -40 to 125 c electrical characteristics (t a = 25 c, v in = v out + 1v; unless otherwise noted) parameter conditions min typ max unit 3.3v i o = 40ma, v in = 4.3v 3.234 3.300 3.366 output voltage 5.0v i o = 40ma, v in = 6.0v 4.900 5.000 5.100 v 3.3v i o = 40ma, 4.3v bay linear, inc 2418 armstrong street, livermore, ca 94550 tel: (925) 606-5950, fax: (925) 940- 9556 www.baylinear.com b4250 output voltage vs. output current b4250-3.0 output voltage vs. input voltage b4250-3.0 dropout voltage vs. output current b4250-3.0
bay linear, inc 2418 armstrong street, livermore, ca 94550 tel: (925) 606-5950, fax: (925) 940- 9556 www.baylinear.com b4250 supply current vs. input voltage (b4250-3.0) input transient response (b4250-3.0) load transient response (b4250-3.0) ripple rejection ratio (b4250-3.0)
bay linear, inc 2418 armstrong street, livermore, ca 94550 tel: (925) 606-5950, fax: (925) 940- 9556 www.baylinear.com b4250 standard circuit sot-23 0.015 - 0.018 (0.381 - 0.457) 0.020 - 0.024 (0.508 - 0.610) 0.110 - 0.120 (2.794 - 3.048) 0.001 - 0.004 (0.025 - 0.102) 0.030 - 0.041 (0.762 - 1.041) 0.018 - 0.024 (0.457 - 0.610) 0.070 - 0.080 (1.778 - 2.032) 0.035 - 0.040 (0.889 - 1.016) 0.047 - 0.055 (1.194 - 1.397) 0.083 - 0.098 (2.108 - 2.489) 0.003 - 0.005 (0.076 - 0.127) v in c in tantanium v in v ss v out r l c l 1 tantanium v in c in tantanium v in v ss v out r l c l 1 tantanium f v in c in tantanium v in v ss v out r l c l 1 tantanium v in c in tantanium v in v ss v out r l c l 1 tantanium f
bay linear, inc 2418 armstrong street, livermore, ca 94550 tel: (925) 606-5950, fax: (925) 940- 9556 www.baylinear.com advance information - these data sheets contain descriptions of products that are in development. the specifications are based on the engineering ca lculations, computer simulations and/ or initial prototype evaluation. preliminary information - these data sheets contain minimum and maximum specifications that are based on the initial device characterizations. these lim its are subject to change upon the completion of the full characterization over the specified temperature and supply voltage ranges. the application circuit examples are only to explain the representative applications of the devices and are not intended to gua rantee any circuit design or permit any industrial property right to other rights to execute. bay linear takes no responsibility for any problems related to any industrial property right resulting from the use of the contents shown in the data book. typical parameters can and do vary in different applications. customer?s technical experts must validate all operating parameters including ? typical? for each customer applic ation. life support and nuclear policy bay linear products are not authorized for and should not be used within life support systems which are intended for surgical implants into the body to support or sustain life, in aircraft, space equipment, submarine, or nuclear facility applications wi thout the specific written consent of bay linear president.
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