cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 1 general description features the cm2836/b/c family is a positive voltage linear regulator developed utilizing cmos technology featured low quiescent current (30a typ.), low dr opout voltage, and high output voltage accuracy, making them ideal for battery applications. en input connected to cmos has low bias current. the space-saving sc70 package is attractive for ?pocket? and ?hand held? applications. these rugged devices have both thermal shutdown, and current limit to prevent device failure under the ?worst? of operating conditions. in application requiring a low noise, regulated supply, place a 1000pf capacitor between bypass and ground. the cm2836/b/c is stable with a low esr output capacitance of 1.0f or greater. very low dropout voltage low current consumpti on: typ. 30a, max. 35a more options output voltage high accuracy output voltage: +/- 2% guaranteed 300ma output input range up to 7.0v thermal shutdown current limiting stability with low esr capacitors compact package: sot-23 / sot-89 / sc70 factory pre-set output voltages low temperature coefficient applications battery-powered devices personal communication devices home electric/electronic appliances pc peripherals typical applications
cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 2 pin configuration sot-23-3 top view 1 3 2 2836 2836b pin 1 gnd vin pin 2 vout vout pin 3 vin gnd sot-23-5 top view sc70-5 top view sot-89 top view 1 23 block diagram overcurrent shutdown therm al shutdown r1 r2 in out gnd vref = 1.176v amp - + byp en 1ua 2836 pin 1 vin pin 2 gnd pin 3 en pin 4 byp pin 5 vout 2836 pin 1 gnd pin 2 vin pin 3 vout cm2836 2836b 2836c pin 1 vin nc nc pin 2 gnd gnd vin pin 3 en nc nc pin 4 byp vin gnd pin 5 vout vout vout
cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 3 ordering information example: part number output voltage temperature range package cm2836/b/cgsim23 3.3v -40 ~ +85 sot-23 cm2836/b/cgsim25 3.3v -40 ~ +85 sot-23-5 cm2836/b/cgsim89 3.3v -40 ~ +85 sot-89 cm2836/b/cgsim75 3.3v -40 ~ +85 sc70-5 note: for other pre-set output voltage require ments, please contact champion sales office. please refer to page 10 absolute maximum ratings operating ratings input voltage ?????.??..??????????. +7v output current ????????.?? p d / (v in - vo) ma output voltage ???????.?? gnd-0.3v to v in +0.3v esd classification ????????????????? b ambient temperature range (t a ) ?..?..... -40 to +85 junction temperature range ??...?... -40 to +150 thermal information parameter package maximum unit thermal resistance ( jc ) sot-23 sot-23-5 160 /w thermal resistance ( jc ) sot-89 100 /w thermal resistance ( jc ) sc70-5 250 /w sot-23 sot-23-5 250 mw sot-89 400 mw internal power dissipation (p d ) ( t = 100 ) sc70-5 200 mw maximum junction temperature 150 maximum lead temperature (10 sec) 300 caution: stress above the list ed absolute rating may cause permanent damage to the device.
cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 4 electrical characteristics t a = +25 ; unless otherwise noted cm2836/b/c parameter symbol test conditions min. typ. max. unit input voltage v in note 1 7 v output voltage accuracy v out i o = 1ma to 300ma -2 2 % 1.2v cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 5 detailed description the cm2836/b/c family of cmos regulators c ontains a pmos pass transistor, voltage re ference, error amplifier, over-current protection, output short prot ection, and thermal shutdown. the p-channel pass transistor receives data fr om the error amplifier, over-current pr otection, output short protection, and the rmal protection circuits. during normal operation, the error amplifier compares the output voltage to a precision reference. over-cu rrent and thermal shutdown circuits become active when the junction temperature exceeds 150 , or the current exceeds 300ma. during thermal shutdown, the output voltage remains low. no rmal operation is restored when t he junction temperature drops below 120 . the cm2836/b/c switches from voltage mode to current mode when the load exceeds t he rated output current. this prevents over-stress. enable the enable pin normally floats hi gh. when actively, pulled low, the pmos pass tr ansistor shut off, and all internal circuits ar e powered down. in this state, the quie scent current is less than 2a. this pi n behaves much like an electronic switch. external capacitor the cm2836/b/c is stable with a low esr output capacitor to ground of 1.0f or greater. it can keep stable even with higher esr capacitors. a second capacitor is re commended between the input and ground to st abilize vin. the input capacitor should be larger than 1f to have a beneficial effec t. all capacitors should be placed in clos e proximity to the pins. a ?quiet? groun d termination is desirable.
cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 6 typical characteristics
cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 7
cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 8 package dimension sot-23 (m23) e1 l c1 d e a a2 a1 b b1 c 2 1 e1 e l1 d e e1 e e1 b a2 a 2 1 a1 b1 b c c1 base metal with plating section b-b see section b-b l1 l 12 3 sot-23-5 (m25) e1 l c1 d e a a2 a1 b b1 c 2 1 e1 e l1 d e e1 e e1 b a2 a 2 1 a1 b1 b c c1 base metal with plating section b-b see section b-b l1 l 123 5 4
cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 9 sot-89 (m89) e1 e d1 h e a b l b 1 c d d d1 e e1 e l h 8 b b1 b c 5 1.0 a sc70-5
cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 10 numbering scheme ordering number : cm2836/b/c xyz (note1) ordering number : cm2836/b/c gxyz (note2) note1 : cm2836/b/c: 300ma cmos ldo with enable x : suffix for voltage output (note 3) y : suffix for temperature range (note 4) z : suffix for package type (note 5) note2 : cm2836/b/c: 300ma cmos ldo with enable g : suffix for pb free product x : suffix for voltage output (note 3) y : suffix for temperature range (note 4) z : suffix for package type (note 5) note 3 : see cmos ldo voltage suffix table cmos ldo voltage suffix table output voltage suffix output voltage suffix 1.2v ac 2.5v k 1.5v a 2.6v l 1.7v c 2.7v m 1.8v d 2.8v n 2.0v f 3.0v p 2.1v g 3.1v q 2.2v h 3.3v s 2.3v i 3.6v v note 4 : y= i : -40 ~+85 (only i grade support for all cmos ldos) note 5: z is single alphabet with or without digits m25 : sot-23-5 (tr only) m23 : sot-23 (tr only) m89 : sot-89 (tr only) sc70-5 (tr only)
cm2836/b/c 300ma l ow e sr cmos ldo w ith e nable 2007/06/28 rev1.1 champion microelectronic corporation page 11 important notice champion microelectronic corporation (cmc) re serves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the late st version of relevant information to ve rify, before placing orders, t hat the information being relied on is current. a few applications using integrated circuit products may involv e potential risks of death, personal injury, or severe property or environmental damage. cmc integrated circ uit products are not designed, intended, au thorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. use of cmc products in such applications is understood to be fully at the risk of the cust omer. in order to minimize risks associated with the customer?s applications, th e customer should provide adequate design and operating safeguards. hsinchu headquarter sales & marketing 5f, no. 11, park avenue ii, science-based industrial park, hsinchu city, taiwan 7f-6, no.32, sec. 1, chenggong rd., nangang district, taipei city 115, taiwan t e l : +886-3-567 9979 t e l : +886-2-2788 0558 f a x : +886-3-567 9909 f a x : +886-2-2788 2985
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