40313hkim 20130314-s00002 no.a2173-1/10 semiconductor components industries, llc, 2013 april, 2013 http://onsemi.com lc709202f overview the lc709202f is an ic that measures the remaining po wer level of 1-cell lithium-ion (li+) batteries used for a portable equipment etc. this product is able to reduce a fuel gauge errors by im plementing its unique correction technology for measurement value of battery temperature and voltage. it is possible for this to realize high precision for measur ement in battery power measurem ent ic that does not need a current sensing resistor. (3% under certain conditions) applications package dimensions ? wireless handsets unit : mm (typ) ? smartphones/pda devices 3318 ? mp3 players ? digital cameras ? portable game players ? usb-related devices features ? accuracy of remaining battery power level measurement ? 3% (at an ambient operating temperature of 0c to 50c) note: the accuracy above is the value of an experiment using the evaluation board. ? precision 7.5mv/ce ll voltage measurement ? a current sensing resistor is unnecessary. ? alert function ? interface ? i 2 c interface (up to 400 khz supported) ? low power consumption ? normal mode : 15 a ? sleep mode : 0.1 a ? corresponding battery ? model to be used depending on the material of the electrode of the battery pack + is different. lc709202f-01: ternary system lc709202f-02: nickelic acid orderin g numbe r : ENA2173 cmos lsi 1-cell li+ (lithium-ion) battery monitor ic 2.6 2.6 0.4 0.8 0.25 (0.035) side view side view bottom view top view laser marked index 0.5 (0.55) (c0.116) (0.13) (0.125) 1 2 16 vct16(2.6x2.6) * i 2 c bus is a trademark of philips corporation.
lc709202f no.a2173-2/10 ? ports ? i 2 c communication pin 2 (sda, scl) ? battery temperature reading control pin 1 (tsw) ? analog voltage input pin for battery temperature 1 (tsense) ? external alarm / interrupt for low-battery warning 1 (alarmb) ? reset pin 1 (resb) ? test pin 3 (test0, test1, test2) ? power supply pin 3 (v ss , v dd 1, v dd 2) ? package form ? vct16 (2.62.6) : lead-free type pin assignment vct16 (2.6 2.6) ?lead-free type? pin function vct16 pin name i/o description 1 v ss - connect to the - terminal of the battery. 2 resb i reset pin 3 v dd 1 - connect to the + terminal of the battery. 4 test0 i test pin *connect to v ss . 5 alarmb o alert indication. an active low output used to indi cate specified condition thresholds have been met. *when you do not use an alert function, please connect with v ss. 8 test1 o set ?open? 9 tsw o battery temperature reading control pin *set high when reading in the temperature, held low at other times. 10 tsense i battery temperature analog voltage input pin 11 sda i/o i 2 c data pin 12 scl i/o i 2 c clock pin 13 v dd 2 - + power pin for i 2 c-bus communication pin(sda,scl) 16 test2 o set ?open? top view lc709202frd test1 nc nc alarmb v dd 2 nc nc test2 v ss resb v dd 1 test0 13 14 15 16 8 7 6 5 12 3 4 12 11 10 9 scl sda tsense tsw
lc709202f no.a2173-3/10 block diagram
lc709202f no.a2173-4/10 absolute maximum ratings at ta=25 c, v ss =0v parameter symbol pin/remarks conditions specification unit v dd [v] min typ max maximum supply voltage v dd max v dd 1, v dd 2 -0.3 +6.5 v input voltage v i (1) resb, tsense -0.3 v dd 1 +0.3 output voltage v o (1) tsw -0.3 v dd 1 +0.3 v o (2) alarmb -0.3 input/output voltage v io (1) sda, scl -0.3 +5.5 allowable power dissipation pd max vct16 ta=-40 to+85 c 55 mw operating ambient temperature topr -40 +85 c storage ambient temperature tstg -55 +125 allowable operating conditions at ta= -40 to +85 c, v ss =0v parameter symbol pin/remarks conditions specification unit v dd [v] min typ max operating supply voltage v dd (1) v dd 1 2.5 4.5 v high level input voltage v ih (1) tsense 2.5 to 4.5 0.70v dd 1 v dd 1 v ih (2) resb 2.5 to 4.5 0.75v dd 1 v dd 1 v ih (3) sda, scl v dd 2=1.6v to 5.5v 2.5 to 4.5 0.70v dd 2 v dd 2 low level input voltage v il (1) tsense 2.5 to 4.5 v ss 0.25v dd 1 v il (2) resb 2.5 to 4.5 v ss 0.25v dd 1 v il (3) sda, scl v dd 2=1.6v to 5.5v 2.5 to 4.5 v ss 0.30v dd 2 stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above the recommended oper ating conditions is not implied. extended exposure to stresses above the recommended operating conditions may affect device reliabili ty.
lc709202f no.a2173-5/10 electrical characteristics at ta= -40 to +85 c, v ss =0v parameter symbol pin/remarks conditions specification unit v dd [v] min typ max high level input current i ih (1) resb v in =v dd 1 (including output transistor off leakage current) 2.5 to 4.5 1 a i ih (2) sda, scl v in =v dd 2 v dd 2=1.6v to 5.5v (including output transistor off leakage current) 2.5 to 4.5 1 low level input current i il (1) resb v in =v ss (including output transistor off leakage current) 2.5 to 4.5 -1 i il (2) sda, scl v in =v ss v dd 2=1.6v to 5.5v (including output transistor off leakage current) 2.5 to 4.5 -1 high level output voltage v oh (1) tsw i oh =-0.4 ma 3.0 to 4.5 v dd -0.4 v v oh (2) i oh =-0.2 ma 2.5 to 4.5 v dd -0.4 low level output voltage v ol (1) tsw, alarmb, sda, scl i ol =3.0 ma 3.0 to 4.5 0.4 v ol (2) i ol =1.3 ma 2.5 to 4.5 0.4 hysteresis voltage vhys(1) resb 2.5 to 4.5 0.1v dd 1 vhys(2) sda, scl 2.5 to 4.5 0.1v dd 2 pin capacitance cp all pins pins other than the pin under test v in =v ss ta=25 c 2.5 to 4.5 10 pf consumption current (note 1) i dd (1) v dd 1 normal mode 2.5 to 4.5 15 26 a i dd (2) auto mode 2.5 to 4.5 2 to 15 4 to 26 i dd (3) sleep mode 2.5 to 4.5 0.1 5 voltage measurement accuracy v me (1) v dd 1 ta= +25 c 3.6 -7.5 +7.5 mv/cell v me (2) ta= -20 c to +70 c 2.5 to 4.5 -20 +20 note 1: consumption current is a value in the range of -20 c to +70 c
lc709202f no.a2173-6/10 i 2 c slave characteristics at ta=-40 to+85 c, v ss =0v parameter symbol pin/remarks conditions specification unit v dd [v] min max clock frequency tscl scl 2.5 to 4.5 400 khz bus free time between stop condition and start condition tbuf scl, sda see fig. 1. 1.3 s hold time (repeated) start condition first clock pulse is generated after this interval thd:sta scl, sda see fig. 1. 0.6 s repeated start condition setup time tsu:sta scl, sda see fig. 1. 0.6 s stop condition setup time tsu:sto scl, sda see fig. 1. 0.6 s data hold time thd:dat scl, sda see fig. 1. 0 0.9 s data setup time tsu:dat scl, sda see fig. 1. 100 ns clock low period tlow scl 1.3 s clock high period thigh scl 0.6 s clock/data fall time tf scl, sda 20 + 0.1c b 300 ns clock/data rise time tr scl, sda 20 + 0.1c b 300 ns figure 1 i 2 c timing t hd:st a t su:sto t buf t low t hd:da t t hig h t r t f t su:da t t su:sta t hd:sta ps s p
lc709202f no.a2173-7/10 discharge characteristics figure 2 discharge characteristics by temperature change figure 3 discharge characteristics by load change
lc709202f no.a2173-8/10 communication protocol communication protocol type: i 2 c frequency: 400 khz address: 0x16 bus protocols : start condition : repeated start condition : read (bit value of 1) : write (bit value of 0) : ack (bit value of 0) : nack (bit value of 1) : stop condition : slave address to last data (crc-8-atm : ex.3778mv : 0x16,0x09,0x17,0xc2,0x0e 0x86) : master-to-slave : slave-to-master : continuation of protocol read word protocol write word protocol p s sr rd wr a n ? p crc-8 ? s rd a data byte low a slave address wr a command code a command code a data byte high ? a crc-8 n p sr slave address ? data byte low a data byte high a crc-8 sslaveaddresswra a access slave functions command code range unit read cell temperature 0x08 0 to 65535 0.1k (0.0 c = 2732) cell voltage 0x09 0 to 65535 mv current 0x0a -32768 to 32767 ma adjustment pack 8 0x0b 0 to 255 value remaining capacity 0x0f 0 to 1000 mah relative state of charge 0x0d 0 to 100 % full charge capacity 0x10 1000 mah ic version 0x11 0 to 65535 version adjustment thermistor 0x12 0 to 255 value hot start 0x13 bit 0 disable : 0 or enable : 1 sleep mode bit 1 auto mode bit 2 alarm low battery 0x14 high : 0 to 250 20mv low : 0 to 100 % adjustment b 0x15 0 to 65535 b system mode 0x16 bit 0 to 3 : data 0 nomal mode data 1 sleep mode data 2 auto mode bit 4 to 7 : data 0 to 6 auto deep write adjustment pack 0 0x00 0 to 32767 value adjustment pack 1 0x01 0 to 32767 value adjustment pack 2 0x02 0 to 32767 value adjustment pack 3 0x03 0 to 32767 value adjustment pack 4 0x04 0 to 32767 value adjustment pack 5 0x05 0 to 32767 value set relative state of charge 0x08 high : 0xa5 - low : 0 to 100 % adjustment pack 8 high : 0x5a - low : 0 to 255 value adjustment thermistor high : 0xaa - low : 0 to 255 value hot start high : 0x55 low : bit 0 disable : 0 or enable : 1 sleep mode bit 1 auto mode bit 2 initial relative state of charge 0x09 0xaa55 - alarm low battery 0x0a high : 0 to 250 20mv(activate under) low : 0 to 100 % (activate under) adjustment b 0x0b 0 to 65535 b cell temperature 0x0c 2532 to 3332 (i2c write mode) 0.1k (0.0 = 2732) 0xaa55 (thermistor mode) - c
lc709202f no.a2173-9/10 application circuit example figure 4 example of an application schematic using lc709202f (not use temperature detection function) figure 5 example of an application schematic using lc709202f (use temperature detection function)
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