preliminary datasheet LP6201 LP6201 C04 ver. 1.4 datasheet dec.-2008 page 1 of 9 low noise pfm dc/dc regulator general description the LP6201 series are pfm step-up dc/dc ics with ultra low supply current by cmos process and suitable for use with battery-powered instruments. the LP6201 ic consists of an oscillator, a pfm control circuit, a driver transistor (lx switch), a reference voltage unit, an error amplifier, resistors for voltage detection, and a lx switch protection circuit. a low ripple and high efficiency step-up dc/dc converter can be constructed of this LP6201 ic with only three external components. ordering information LP6201 - f: pb-free package type b3: sot23 b5: sot23-5 x3: sot-89 output voltage 30:3.0v 33:3.3v 36:3.6v 40: 4.0v 45:4.5v 50:5.0v typical application circuit vin + cout 100uf 33uh LP6201 3 2 1 5 4 nc vout en sw gnd ss14 vout + 47uf features up to 85% efficiency low voltage start-up:0.9v shut-down current:<1ua output voltage:2.5-6.0v with 0.1v step high switch on current:800ma 260khz frequency switching available in sot23,sot23-5,sot-89 package applications alk. battery products pin configurations marking information please see website.
preliminary datasheet LP6201 LP6201 C04 ver. 1.4 datasheet dec.-2008 page 2 of 9 functional pin description pin no. sot23-5 sot23 sot89 pin name pin function 1 x x en chip en(active high) 2 3 2 vout voltage output pin 3 x x nc no connection 4 1 1 gnd chip power ground 5 2 3 lx pin of switch function block diagram absolute maximum ratings
preliminary datasheet LP6201 LP6201 C04 ver. 1.4 datasheet dec.-2008 page 3 of 9 electrical characteristics
preliminary datasheet LP6201 LP6201 C04 ver. 1.4 datasheet dec.-2008 page 4 of 9 typical operating characteristics
preliminary datasheet LP6201 LP6201 C04 ver. 1.4 datasheet dec.-2008 page 5 of 9
preliminary datasheet LP6201 LP6201 C04 ver. 1.4 datasheet dec.-2008 page 6 of 9
preliminary datasheet LP6201 LP6201 C04 ver. 1.4 datasheet dec.-2008 page 7 of 9 packaging information
preliminary datasheet LP6201 LP6201 C04 ver. 1.4 datasheet dec.-2008 page 8 of 9
preliminary datasheet LP6201 LP6201 C04 ver. 1.4 datasheet dec.-2008 page 9 of 9
|
