orderin g numbe r : ena1627 bi-cmos ic for vcms constant-current driver ic LV8099CT overview the LV8099CT is a constant current driver ic for voice coil motors that supports i 2 c control integrating a digital/analog converter (dac). it uses an ultraminia ture wlp package and includ es a current detection resi stor for constant current control, which makes the ic ideal for miniaturization of camera modules intended for use in camera-equipped mobile phones. the output transistor has a low on-resistance of 1 and the resistance of the built-in current detection resistor is 1 , which minimizes the voltage loss and helps withstand voltage drop in v cc . the function is incorporated, which, by changing the current in a stepped pattern while taking time at ri se and fall of the output curren t, provides the current a slop e, improving the converging stability of the voice coil motor (current slope function). functions ? constant current driver for voice coil motors. ? constant current control enabled by dac (10 bits). ? i 2 c bus control supported. ? wide operating voltage range (2.2 to 5.0v). ? built-in current detection resistor. ? 6-pin wlp package used (1.27 0.87 0.25mm). ? built-in voltage drop protection circuit (v cc = 2v output off). ? built-in thermal protection circuit. ? low output block total-resistance of 2 helps withstand voltage drop in v cc . (current detection resistance + output transistor on-resistance). ? built-in vcm overshoot preventive function (current slope function). specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max 5.5 v output voltage v out max v cc + 0.5 v input voltage v in max scl, sda, ena 5.5 v gnd pin source current i gnd 150 ma allowable power dissipation pd max with specified substrate * 350 mw operating temperature topr -30 to +85 c storage temperature tstg -40 to +150 c * specified substrate : 40mm 40mm 1.6mm, single layer glass epoxy substrate specifications of any and all sanyo semiconductor co.,l td. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 31710 sy 20091119-s00002 no.a1627-1/9
LV8099CT allowable operating conditions at ta = 25 c parameter symbol conditions ratings unit supply voltage v cc 2.2 to 5.0 v maximum preset output current i o 100 ma high-level input voltage v ih 1.3 to v cc v low-level input voltage v il applied to scl, sda, and ena pins -0.3 to 0.5 v electrical characteristics at ta = 25c, v cc = 2.8v ratings parameter symbol conditions min typ max unit i cc 0a ena = l 1 a i cc 0b ena = h, pd = 1 1 a i cc 0c ena = h, d0 to d9 = 0 1 a supply current i cc 1 ena = h, d0 to d9 0 0.5 3 ma input current i in scl, sda, ena -1 0 1 a total resistance value of the output block (built-in resistor + transistor on-resistance) rttl v cc = 2.8v, i out = 80ma 2 3 dac block resolution 10 bits relative accuracy inl 2 lsb differential linearity dnl 1 lsb full code current ifull d0 to d9 = 1 100 ma error code current 0 izero d0 to d9 = 0 1 a spark killer diode reverse current is (leak) 1 a forward voltage vsf i out =100ma 1.3 v package dimensions unit : mm (typ) 3390 no.a1627-2/9 sanyo : wlp6k(1.27x0.87) top view side view side view bottom view 0.22 ab 0.33 max 0.08 1.27 0.87 12 3 0.235 0.4 0.235 0.4 pd max -- ta 0 0.3 0.35 0.18 0.2 0.1 0.4 --30 --20 80 100 60 20 40 0 120 ambient temperature, ta -- c allowable power dissipation, pd max -- w specified board : 40 40 1.6mm 3 single layer glass epoxy
LV8099CT pin assignment 0.4 3 # p u u p n view ( ball side up ) 2 1 1.27 0.87 pin no. pin name pin description a1 scl i 2 c scl input pin a2 ena enable & reset *1, 2 a3 gnd ground b1 sda i 2 c sda input pin b2 v cc power supply pin b3 out output pin no.a1627-3/9 *1 : setting the ena pin to low powers down and resets the ic. it is necessary to power on the ic by setting the ena pin to low and hold it high during normal operation. *2 : when the ena pin is to be used with pull_up, it is necessary to send code 0 in advance after power-on. block diagram 0.4 a b i 2 c if i 2 c decode gnd v cc sda ena scl rf out vcm - + 0 / 0 ' ' 3 & |