De on cae. ecmcat cnand ORE atta ris SNe is gi atic OOS rane ome PH GENERAL DESCRIPTION MITSUBISHI(Dig.Ana. INTERFACE) M62253FP LITHIUM ION BATTERY CHARGER CONTROL IC The M62253FP is a charge controller designed for charging lithium ion batteries. The IC has a current and voltage control circuit allowing the constant current/voltage charging to lithium ion batteries. A charger system for lithium ion batteries can be easily designed by utilizing the ICs following tunctions ; * charge disabling function for an over discharged battery * charge control function by detecting the battery temperature FEATURES * Constant current and voltage charging Charge disabling functions fer an over discharged battery and a high/low temperature battery Recharging function 2 LED driving circuits to Indicate charging conditions * Delay circuit to prevent chattering PIN CONFIGURATION(TOP VIEW) TIN [4 | C3 [2 | Vref [3] Vop [4 | Vec [5 | LED1 [6 LED2[7 | M62253FP 14] OUT 73] SENSE+ 2] SENSE - H 1] VSENSE 0] GND fg | C2 8 | C1 Outline 14P2N-A APPLICATION Lithium ion battery charger for digital equipment BLOCK DIAGRAM Vref VDD C1 Std. VOLTAGE 4.1V to 3.9V prohibition rouit LED2 LED1 GND C3. C2 prohibition Vcc OE OUT Fixed current control circuit ISENSE+ ISET ISENSE- OE OUT Fixed voltage control circuit VSET VSEN t detect circuit OUT SENSE+ SENSE- VSENSE TIN (1/5)ne MITSUBISHI(Dig.Ana. INTERFACE) Qh sfc aO wand? open heat M62253FP 3 10 Ss 3 movies TNS ANC erin Some pat LITHIUM ION BATTERY CHARGER CONTROL IC EXPLANATION OF TERMINALS wa Symbol Function 1 TIN Temperature detection (also using for battery connect detection) 2 C3 Setting delay time of temperature detection (Tpd=50ms at 0.1,1F) 3 Vref Reference voltage of internal circuit. 4 VDD 5.0V reference voltage 5 Vec Power supply 6,7 | LED1.2 completion) (LED1 is on during charging, LED2 is on at charge 8 C1 Setting delay time of voltage detection (Tpd = 1.20sec at 2.2uUF) 9 ce? Setting delay time of current detection (Tpd = 1.30sec at 2.2F) 10 GND Ground 11. | VSENSE | Battery voltage detection 12 | SENSE- | Charging current detection 13 | SENSE+ | Charging current detection 14 OUT Output (open collector configuration) (2/5)ag 18 7 amet eu . sal SY ating @ iL ecili s' rans oy catio ange clio MITSUBISHI(Dig.Ana. INTERFACE) M62253FP LITHIUM ION BATTERY CHARGER CONTROL IC ABSOLUTE MAXIMUM RATING (Ta=25C unless otherwise noted) Symbol Parameter Test conditions Ratings Unit Vcc |Supply voltage 16 Vv IOUT = JOUT pin cutput current 30 mA VSENSE |SENSE pin voltage Vcc Vv TIN {TIN pin voltage Vcc Vv Pd Power cissipation Ta = 25C 450 mW Ktheata |Thermal derating Ta = 25C 4.5 mWieC Topr |Operating temperature -20 to +85 C Tsig |Storage temperature -40 to +125 C ELECTRICAL CHARACTERISTICS (Voc=8.5V Vref=4.10V VSENSE=3.6V,Ta=25C, unless otherwise noted) es a Limit . 68 | Symbol Parameter Test condition Unit oO MIN | TYP | MAX Vec Supply voltage range 6.0; 15 V lec circuit current LED OFF 7 mA Vob/Vpb VDD pin output voltage 4.75/5.00}5.25| V = [VTHchgon |Charge start voltage 25| 26] 2.7| V 3 VTHachgon |Fast charge start voltage 29 3.0 3.1 V & WVTHachgoff [Zonst current charge 4.06} 409/412] V > |Vochg1 Output voltage set! | Charge time 4.07| 4.10] 4.13] V & Vochg2 Output voltage set2 | Charge complete time 2.45] 2.55 | 2.65 V = |VTH rchgon |Recharge start voltage| Charge complete time 3.8|/ 3.9] 4.0 V 4 ISET1 Charge current set voltage 1 | 2. 6V< battery voltage<3.0V 15 25 351 mV 2 ISET2 Charge current set voltage 2 | 3.0V< battery voltage<4.1V | 235] 250 | 265 | mV = ITHchgoff _ [enarge complete Const voltage charge time 15} 25] 35| mV St IINSENSE+ |SENSE+ pininput current| Charge time _ 60 85 LA o O OJIINSENSE- |SENSE- pin input current} Charge time 60 85| UA loutLED1 = |LED1 pin output current 8 10 12} mA loutLED2 = |LED2 pin output current 8 10 12| mA LED LED1 pin output "H" VOHLED1 |yotags oP 2.5} V VOHLED2 |LED2 pin output "H" 2.5| V VTHINTH1 voltage ru ee thresnole Resistance ratio(R1/R2) 0.398 | 0.410 | 0.422 VTHINTL1 atte ow side threshold in the block diagram 1.989 12.050 |2.112 TIN |linTin TIN pin input current -1.0 LA VTHINTH2 [ionaae oe Mreshors Resistance ratio(R1/R2) [0.388 | 0.400 | 0.412 VTH INTL2 volte ow side threshold in the block diagram 1 B04 1 860 1 94 6 OUT VOHOUT [OUT pin saturation voltage | |OUT=20MA 10} 20) V ILOUT OUT pin leak current | VC=15V 1.0) pA C1 Itdct Voltage detect delay time | Recharge time@C1= 2.2y F 0.88 | 1.20] 1.52 s tdBDET1 Connect detect time 1 |4.1V output time C2=2.2uF | 0.95] 1.30] 1.63 s tdBDET2 [Connect detect time 2 | 2.55V output timeC2= 2.2 F 88| 120} 152| ms C2 |tcdIDET Current detect delay time | C2= 2.2UF 0.95 | 1.30] 1.65 s td ILED LED switching delay time | C2= 2.2uF 18) 25] 32 Ss tdchg Discharge time C2= 2.2uF (After current detect) 30 90 ms T t _ C3 |idc3 detect delay time C3= 0.1UF 36 50 64] ms (3/5)prt MITSUBISHI(Dig.Ana. INTERFACE) ach es siete M62253FP LITHIUM ION BATTERY CHARGER CONTROL IC 4. Timing chart (a case of application's constants) (1) Timing of battery connecting detection (2) Timing of temperature detection Battery connection point oy w o o and 50ms 2 > 5 a 256Vb (Xo Gee RL 2 = = , ' D Oo to = 3 Voltage > ' a ' ' Detection | __1 55ms aa) BOMS eg ye SOS jgyei - SOMS ag >t Gurrent ON 7 Detection | > Charge ofr Charge start (3) Timing of charging oop Battery voltage < ne ao oO < Gonstant current charge Constant Constant voltage : current charge: charge Completion of battery Charge Recharge temperature detection g g completion (Constant current charge) nam 120m ! | | iy 120mS 25mA ' 250mA | Vo=4.1V Vo=2.3V | 250mA of MaGeceeeeceeeceeeeneed Pik --------5 ee Yeh a 2a Benn > 250mA+----- feet be 1.308 5 Go 1 o 5 25mA+ -----4 Py wee ee ee ee 6 0 1.208 ! <> Charge ON ----e=- 1 roa ee LED1 (ted) ope | | | LED2 (green) (4/5)ne MITSUBISHI(Dig.Ana. INTERFACE) vw A ncatio wand? og nae M62253FP ? as This SAC ruts matees arayn some P LITHIUM ION BATTERY CHARGER CONTROL IC 5. APPLICATION EXAMPLE VDD C1 Vcc 53m = - OE 4.1V to 3.9V OUT Incorrect current control detect circuit IScNSEs prohibition Ser ISENSE- circuit [= OUT] 3.0V OE voltage control | @4 * circuit DEV SET VSENSE ety 7 C 1Q OUT Ne 0 WS SENSE+ O ses _ VSENSE A To VDD pin Incorrect LW detect LL! Current Z prohibition detect circuit circuit prohibition circuit 0.1yF 2.2UF (5/5)