View LSP2159BD30AD_8084786.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 1/12 applications sata power supply lcd tv/ monitors wireless devices communication devices portable electronics post regulator for smps pin configuration (top view) tab is pin 2 3 2 1 sot223-3l (top view) tab is pin 2 3 2 1 to252-3l (top view) tab is pin 2 3 2 1 to263-3l pin description pin number sot223-3l to252-3l to263-3l sot223-3l b type to252-3l b type to263-3l b type pin name pin function 1 3 vin input 2,tab 1 gnd ground 3 2,tab vout output features output voltage available in 1.5v, 1.8v, 2.5v, 2.8v, 2.85v, 3.0v, 3.3v, 5.0 v stable with a ceramic output capacitor of 4.7uf or higher low dropout voltage: 600mv at 1.5a typical low quiescent current 95ua over temperature shutdown short circuit protection low temperature coefficient standard sot223-3l, to252-3l and to263-3l packages. general description the lsp2159 is a 1.5a cmos ldo regulator that features a low quiescent current, ultra low input, outpu t and dropout voltages, as well as over temperature shutdown. it is available in sot223-3l, to252-3l and to263-3l packages. the fixed output voltage of the lsp2159 is set at the factory and trimmed to 2%. the lsp2159 is stable with a ceramic output capacitor o f 4.7uf or higher. this family of regulators can provide either a stand-alone power supply solution or act as a pos t regulator for switch mode power supplies. they are particularly well suited for applications requiring lo w input and output voltage. please be aware that an important notice concerning availability, discla imers, and use in critical applications of lsc products is at the end of this document.
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 2/12 block diagram typical applications circuits c1 1f v in v out lsp2159 gnd v in v out c2 4.7f absolute maximum ratings parameter rating unit input supply voltage, en pin voltage +6 v maximum output current pd/(vin-vo) output pin voltage -0.3 to vin+0.3 v sot223-3l 625 to252-3l 1200 internal power dissipation to263-3l 1600 mw sot223-3l 7 to252-3l 7 junction to case thermal resistance ( jc ) to263-3l 2.7 / w
sot223-3l 160 to252-3l 90 junction to ambient thermal resistance ( ja ) to263-3l 45 / w
operating temperature -40 to 85 c operating junction temperature -40 to 125 c storage temperature -65 to 150 c maximum junction temperature 150 c lead temperature (soldering, 5 sec) 300 c note: these are stress ratings only and functional operati on is not implied. exposure to absolute maximum ratings for prolonged time periods may affect device reliability . all voltages are with respect to ground.
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 3/12 recommended operating conditions parameter rating unit input supply voltage 5.5 v operating temperature -40 to 85 c operating junction temperature -40 to 125 c electrical characteristics (v in = v out + 0.5v, c in = 1 f, c o = 4.7 f, t a = 25 c unless otherwise specified.) parameter symbol test conditions min typ max unit input voltage v in note1 5.5 v output voltage accuracy v o i o = 100ma -2 +2 % short circuit current i sc v o < 0.3v 1.0 a ground current i gnd i o = 1ma to 1.5a 600 a quiescent current i q i o = 0ma 60 80 a i o = 10ma, v o 2.5v v in =v o + 0.5v to v o + 1.5v 0.5 1 line regulation lnr i o = 10ma, v o # 2.5v v in = 3.3v to 5.5v 0.5 1 %/v load regulation ldr i o = 1ma to 1.5a 0.5 2 %/a temperature coefficient t c 30 ppm/ c over temperature shutdown ots 150 c over temperature hystersis oth 30 c f=100hz 65 f= 1khz 55 power supply ripple rejection psrr i o = 100ma v o =1.5v f= 10khz 35 db 1.5v v o < 2.5v 1300 2.5v v o < 2.8v 800 dropout voltage v drop i o = 1.5a v o 2.8v 300 mv output noise v n f = 10hz to 100khz 40 v rms note 1 the minimum input voltage of the lsp2159 is det ermined by output voltage and dropout voltage. the minimum input voltage is defined as: v in(min) =v o +v drop application information the lsp2159 families of low-dropout (ldo ) regulators have several features that allow them to apply to a wide range of applications. the family operates with very low input voltage (1.4v) and low dropout voltage (typically 150mv at full load), making it an efficient stand-alone powe r supply or post regulator for battery or switch mode power supplies. the 1.5a output curren t make the lsp2159 family suitable for powering many microprocessors and fpga supplies. the lsp2159 family also has low output noise (typically 40vrms with 4.7f output capacitor), making it ideal for use in telecom equipment. external capacitor requirements a 4.7f or larger ceramic input bypass capacitor, c onnected between vin and gnd and located close to the lsp2159, is required for stability. a 1.0uf minimum value capacitor from vo to gnd is also required. to improve transient response, noise rejection, and ripple rejection.
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 4/12 (1) 1 uf capacitor for input (2) 4.7uf capacitor for output regulator protection the lsp2159 features internal current limiting, therma l protection and short circuit protection. during normal operation, the lsp2159 limits output current to about 3a. when current limiting engages, the output voltage scales back linearly until the over current condition ends. while curr ent limiting is designed to prevent gross device failure, care should be taken not to exceed the power dissipation ra tings of the package. if t he temperature of the device exceeds 150c, thermal-protec tion circuitry will shut down. once the dev ice has cooled down to approximately 30c below the high temp trip point, regulator operation resumes. the short circuit current of the lsp2159 is about 1a when its output pin is shorted to ground. thermal information the amount of heat that an ldo linear regulator generates is: p d =(v in -v o )i o . all integrated circuits have a maximum allowable junction temperature (t j max) above which normal operation is not assured. a system designer must design the operating environment so that the operating junction temperature (t j ) does not exceed the maximum junction temperature (t j max). the two main environmental variables that a designer can use to improve thermal performance are air flow and exter nal heatsinks. the purpose of this information is to aid the designer in determining the proper operating environment for a linear regulato r that is operating at a specific power level. in general, the maximum expected power (p d(max) ) consumed by a linear regulator is computed as: ( ) ) q ( ) avg ( i ) avg ( o ) avg ( o ) avg ( i ) max ( d i v i v v p + ? = where: v i (avg) is the average input voltage. v o(avg) is the average output voltage. i o(avg) is the average output current. i (q) is the quiescent current. for most ldo regulators, the quiescent current is insigni ficant compared to the average output current; therefore, the term v i(avg) xi (q) can be neglected. the operating junction te mperature is computed by adding the ambient temperature (t a ) and the increase in temperature due to the regulat or's power dissipation. the temperature rise is computed by multiplying the maximum expected power dissip ation by the sum of the t hermal resistances between the junction and the case (r jc ), the case to heatsink (r cs ), and the heatsink to ambient (r sa ). thermal resistances are measures of how effectively an object dissipates heat. typically, the larger the devices, the more surface area available for power dissipation so t hat the object?s thermal resistance will be lower.
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 5/12 typical performance characteristics 1. output voltage vs. input voltage 2. output voltage vs. output current 3. output voltage vs. temperature
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 6/12 typical performance characteristics continued 4. quiescent current vs. input voltage 8. dropout voltage vs. output current (1.8v) dropout voltage i out (a) 5. quiescent current vs. temperature 9. dropout voltage output current (2.5v) i out (a) dropout voltage 6. ground current vs. output current 10. dropout voltage output current (3.3v) i out (a) dropout voltage 7. ground current vs. input voltage
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 7/12 typical performance characteristics continued 11. load transient response
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 8/12 ordering information tape & reel device package code package quantity part number suffix temperature lsp2159exxad e sot223-3l 2500 a d : -40 $ ~85 $ lsp2159bexxad e sot223-3l 2500 a d : -40 $ ~85 $ lsp2159dxxad d to252-3l 2500 a d : -40 $ ~85 $ lsp2159bdxxad d to252-3l 2500 a d : -40 $ ~85 $ lsp2159kxxad k to263-3l 800 a d : -40 $ ~85 $ lsp2159bkxxad k to263-3l 800 a d : -40 $ ~85 $ marking information
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 9/12 lsc lsp2159b v yyww uz part number logo 1 2 3 internal code date code: yy:year(01=2001) ww:nth week(01~52) output voltage: b:1.5v c:1.8v d:2.5v g:2.8v h:2.85v i:3.0v j:3.3v l:5.0v to263 b type lsc lsp2159 v yyww uz part number logo 1 2 3 internal code date code: yy:year(01=2001) ww:nth week(01~52) output voltage: b:1.5v c:1.8v d:2.5v g:2.8v h:2.85v i:3.0v j:3.3v l:5.0v to263 type
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 10/12 package information (1). sot223-3l (2).to252-3l
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 11/12 (2).to263-3l dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 4.06 4.45 4.83 0.160 0.175 0.190 b 0.51 0.75 0.99 0.020 0.030 0.039 b2 1.14 1.27 1.40 0.045 0.050 0.055 c 0.38typ. 0.015typ. c2 1.14 1.27 1.40 0.045 0.050 0.055 d 8.65 9.15 9.65 0.341 0.360 0.380 e 9.65 9.97 10.29 0.380 0.393 0.405 e 2.54bsc. 0.100bsc. l 14.61 15.24 15.88 0.575 0.600 0.625 l1 2.28 2.54 2.80 0.090 0.100 0.110 l2 1.30 2.92 0.051 0.115 l3 1.27 1.52 1.78 0.050 0.060 0.070 e b2 b d l l2 e l3 10.9 1.3 2.54 3 15.7 9.1 land pattern recommendation (unit : mm) a c2 l1 c
liteon semiconductor corporation lsp2159 1.5a low voltage low dropout cmos regulator rev1.7 12/12 important notice and disclaimer lsc reserves the right to make changes to this document and its product s and specifications a t any time without notice. customers should obta in and confirm the latest product informatio n and specifications before final design, purchase or use. lsc makes no warranty, representa tion or guarantee regarding the suitability of its products fo r any particular purpose, nor does lsc assume any liability for application assistance or custome r p roduct design. lsc does not warrant or accept any liability with products which are purchase d or used for any unintended or unauthorized application. n o license is granted by implication or otherwise under any intellectual property rights of lsc. lsc products are not authorized for use as critic al components in life support devices or systems without express written approval of lsc.

▲Up To Search▲

Price & Availability of LSP2159BD30AD

	To Download LSP2159BD30AD Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .