Preliminary. Battery Protect Solution IC MP24AF ( 001-MP24AF-00 ) 01/08 01/08 01/11. Document No. : DS-MP24AF-00. ITM Semiconductor Co.

Transcription

1 Document No. : DS--00 DATA SHEET Product Product code Production Form ( ) TEP - 5L,BD54 Date of Registration January Issued Checked Approved H.M Jo S.W Park Y.S Kim 01/08 01/08 01/11 ITM Semiconductor Co., LTD. ITM Semiconductor Co., LTD , Namchon-Ri, Oksan-Myon, Cheonwon-Gun, Chungcheongbuk-Do, Korea TEL FAX HOME

2 Contents 1. Features Page 1 2. Outline Page 2 3. Pin Assignment Page 3 4. Block Diagram Page 3 5. Absolute Maximum Rating Page 4 6. Electrical Characteristics Page 4 7. Measuring Circuit Page 9 8. Operation Page 10 1) Overcharge detector (D1) Page 10 2) Overdischarge detector (D2) Page 10 3) Discharge overcurrent detector, Short detector (D3, Short Detector) Page 11 4) Charger overcurrent detector Page 11 5) Over voltage charger detector Page Application Circuit Page Timing Chart Page Package Description Page Marking Contents Page 17

3 Features 1.TheprotectionICandTheDual-NchMOSFETtousecommonDrainareintegratedinto One-packaging IC. 2. Reduced Pin-Count by fully connecting internally. 3. Application Part 1) Protection IC 1 Uses high withstand voltage CMOS process. - The charger section can be connected up to absolute maximum rating Detection voltage precision - Overcharge detection voltage ±25m (Ta=25 ), ±45m (Ta=-30~70 ) - Overdischarge detection voltage ±70m (Ta=25 ), ±80m (Ta=-30~70 ) - Discharging overcurrent detection voltage ±10m (Ta=25 ), ±20m (Ta=-30~70 ) - Charging overcurrent detection voltage ±20m (Ta=25 ), ±40m (Ta=-30~70 ) 3 Built-in detection delay times - Overcharge detection delay time 1.00±0.20s (Ta=25 ), 1.00[+0.50,-0.40]s (Ta=-30~70 ) - Overdischarge detection delay time) 96.0±19.2ms (Ta=25 ), 96.0[+48,-38.4] ms (Ta=-30~70 ) - Discharging overcurrent detection delay time) 12.0±2.4ms (Ta=25 ), 12.0[+6.0,-4.8] ms (Ta=-30~70 ) - Charging overcurrent detection delay time) 6.0±1.2ms (Ta=25 ), 6.0[+3.0,-2.4] ms (Ta=-30~70 ) - Short detection delay time) 400[+160,-120] μs (Ta=25 ), 400[+400,-200] μs (Ta=-30~70 ) 4 0 charge function allowed 5 With abnormal charger has an ability to detect function 6 Auto Wake-up function allowed 2) FET 1 Using advanced trench technology to provide excellent RDS(ON), low gate charge and operation with gate voltage as low as 2.5 while retaining a 12 GS(MAX). 2 TheprotectionforESD 3 Common drain configuration 4 General characteristics -DS () = 24 -ID(A) = 7A -RSS(ON) <46mΩ (GS =4.5,ID =5A) - ESD Rating : 2000 HBM - 1 -

4 Outline This is a battery protect solution IC which is integrated with built-in the protection IC to use a lithium ion/lithium polymer secondary batteries developed for 1-cell series and Dual-Nch MOSFET. It functions to protect the battery by detecting overcharge, overdischarge, discharge overcurrent, charge overcurrent and other abnormalities as turning off internal Nch MOSFET. The protection IC is composed of four voltage detectors, short detection circuit, reference voltage sources, oscillator, counter circuit and logical circuits. The COUT pin (charge FET control pin) and DOUT pin (discharge FET control pin) outputs are CMOS output, and can drive the internal Nch MOSFET directly. The COUT output becomes low level after delay time fixed in the IC if overcharge is detected. The DOUT output becomes low level after delay time fixed in the IC if overdischarge, discharge overcurrent or short is detected. On overcharge state, if the DD voltage is less than the overcharge release voltage, the COUT output becomes high level after delay time fixed in the IC. On overdischarge state, if the voltage of the battery rises more than the overdischarge detection voltage with connecting the charger, the DOUT output becomes high level after delay time fixed in the IC. Charging current canbesuppliedtothebatterydischargedupto0. Once discharge overcurrent or short have been detected, if the state of discharge overcurrent or short is released by opening the loads, the DOUT output becomes high level after delay time fixed in the IC. On overdischarge state, the supply current is reduced as less as possible. Once charge overcurrent has been detected, the state of charge overcurrent is released by opening the charger and setting the load

5 Pin Assignment [ Package: TEP-5L ] 1 2 <Top view> <Bottom view> N.C 2 Source 1(same as SS) 3 Source 2 4 DD 5 6 Drain Block Diagram - 3 -

6 Absolute Maximum Rating TOPR=25, Source1(SS)=0 Item Symbol Rating Unit Supply oltage DD -0.3 ~ 12 - Terminal Input oltage - DD-28 ~ DD+0.3 DS Terminal Input oltage DS SS-0.3 ~ DD+0.3 COUT Terminal Output oltage COUT DD-28 ~ DD+0.3 DOUT Terminal Output oltage DOUT SS-0.3 ~ DD+0.3 Operation Temperature TOPR -40 ~ +85 Storage Temperature TSTG -55 ~ +125 Drain-Source oltage DS 24 Gate-Source oltage GS ±12 Electrical Characteristics Input oltage Item Symbol Measure Condition Min. Typ. Max. Unit *1 Operating Input oltage DD1 DD - SS A Minimum Operating oltage for 0 Charging Channel ON oltage ST DD--, DD-SS= A COUT Pin Nch ON oltage OL1 IOL=30 μa, DD= COUT Pin Pch ON oltage OH1 IOH=-30 μa,dd= DOUT Pin Nch ON oltage OL2 IOL=30 μa, DD= DOUT Pin Pch ON oltage OH2 IOL=-30 μa, DD= Current Consumption Current Consumption IDD DD=3.9, -= μa L Current Consumption at Stand-By Over Charge oltage Protection IS DD= μa L Overcharge Detection oltage DET1 R1=1.0 kω TOPR= TOPR= -30~ B Overcharge Detection Delay Time Overcharge Release oltage Overcharge Release Delay Time tdet1 DD= TOPR= s B TOPR= -30~ REL1 R1=1.0 kω TOPR= TOPR= -30~ trel1 DD= TOPR= ms B TOPR= -30~ B - 4 -

7 Item Symbol Measure Condition Min. Typ. Max. Unit *1 Over Discharge oltage Protection Overdischarge Detection oltage DET2 -=0 R1=1.0 kω TOPR= TOPR= -30~ D Overdischarge Detection Delay Time Overdischarge Release oltage Overdischarge Release oltage 2 tdet2 DD= TOPR= ms D TOPR= -30~ REL2 REL2' R1=1.0 kω chg=4.2 R1=1.0 kω R2=2.2 kω TOPR= TOPR= -30~ TOPR= TOPR= -30~ D D Overdischarge Release Delay Time Discharge Overcurrent Protection Discharging Overcurrent Detection oltage Discharging Overcurrent Detection Delay Time Discharging Overcurrent Release Delay Time Note : *1 The test circuit symbols. *2 The parameter is guaranteed by design. trel2 DD= TOPR= ms E TOPR= -30~ DET3 tdet3 trel3 Charge Overcurrent Protection Charging Overcurrent Detection oltage Charging Overcurrent Detection Delay Time Charging Overcurrent Release Delay Time Short Protection DET4 tdet4 trel4 DD=3.0 R2=2.2 kω DD=3.0 -=0 1 DD=3.0 -=3 0 DD=3.5 R2=2.2 kω DD=3.5 -=0-1 DD=3.5 -=-1 0 Short Detection oltage SHORT DD=3.0 Short Detection Delay Time Reset Resistance Overcurrent Release Resistance tshort DD=3.0 -=0 3.0 TOPR= TOPR= -30~ TOPR= TOPR= -30~ TOPR= TOPR= -30~ TOPR= TOPR= -30~ TOPR= TOPR= -30~ TOPR= TOPR= -30~ TOPR= 25 TOPR= -30~70 DD-1.2 DD-0.9 DD-0.6 DD-1.2 DD-0.9 DD-0.6 TOPR= TOPR= -30~ RSHORT DD=3.6, -= kω F Over oltage Charger Protection Over oltage Charger chg1 DD=3.6, R2=2.2kΩ A Detection oltage Over oltage Charger Release oltage chg2 DD=3.6, R2=2.2 kω A ms ms ms ms μs F F F G G G F F - 5 -

8 Item Symbol Measure Condition Min. Typ. Max. Unit *1 Integrated MOSFET Drain-Source Breakdown oltage BDSS ID=250 μa, GS= Zero Gate oltage Drain Current IDSS DS=20, GS= TJ= μa Gate-Body Leakage Current Gate-Source Breakdown oltage IGSS DS=0, GS=± μa BGSO DS=0, IG=±250 μa ± Gate Threshold oltage GS(th) DS=GS, ID=250 μa Static Source-Source ON-Resistance RSS(ON) GS=10, ID=5A mω TJ= GS=4.5, ID=5A mω GS=3.9, ID=5A mω GS=2.5, ID=3A mω Diode Forward oltage SD IS=1A, GS= Maximum Body-Diode Continuous Current IS 4.5 A - 6 -

9 Note : *1 The test circuit symbols. *2 The parameter is guaranteed by design

10 - 8 -

11 Measuring Circuit A. E. DD - Source1 (SS) TP Source2 DD - Source1 (SS) TP Source2 B. F. DD TP DD TP - Source1 (SS) Source2 A - Source1 (SS) Source2 C. G. DD TP DD TP - Source1 (SS) Source2 - Source1 (SS) Source2 D. H. DD - Source1 (SS) TP Source2 A DD - Source1 (SS) TP Source2-9 -

12 Operation 1. Overcharge detector (D1) The D1 monitors DD pin voltage during charge. In the state of charging the battery, it will detect the overcharge state of the battery if the DD terminal voltage becomes higher than the overcharge detection voltage(typ ). And then the COUT terminal turns to low level, so the internal charging control Nch MOSFET turns OFF and it forbids to charge the battery. After detecting overcharge, it will release the overcharge state if the DD terminal voltage becomes lower than the overcharge release voltage(typ.4.025). And then the COUT terminal turns to high level, so the internal charging control Nch MOSFET turns ON, and it accepts to charge the battery. When the DD terminal voltage is higher than the overcharge detection voltage, to disconnect the charger and connect the load, leave the COUT terminal low level, but it accepts to conduct load current via the paracitical body diode of the internal Nch MOSFET. And then if the DD terminal voltage becomes lower than the overcharge detection voltage, the COUT terminal turns to high level, so the internal Nch MOSFET turn ON, and it accepts to charge the battery. The overcharge detection and release have delay time decided internally. When the DD terminal voltage becomes higher than the overcharge detection voltage, if the DD terminal voltage becomes lower than the overcharge detection voltage again within the overcharge detection delay time(typ. 1.00s), it will not detect overcharge. And in the state of overcharge, when the DD terminal voltage becomes lower than the overcharge release voltage, if the DD terminal voltage backs higher than the overcharge release voltage again within the overcharge release delay time(typ. 2ms), it will not release overcharge. The output driver stage of the COUT terminal includes a level shifter, so it will output the - terminal voltage as low level.the outputtypeofthecout terminal is CMOS output between DD and - terminal voltage. 2. Overdischarge detector (D2) The D2 monitors DD pin voltage during discharge. In the state of discharging the battery, it will detect the overdischarge state of the battery if the DD terminal becomes lower than the overdischarge detection voltage (Typ ). And then the DOUT terminal turns to low level, so the internal discharging control Nch MOSFET turn OFF and it forbids to discharge the battery. Once overdischarge has been detected, overdischarge is released and the DOUT output becomes high level, if the voltage of the battery rises more than the overdischarge detection voltage with connecting the charger, or more than the overdischarge release voltage without connecting the charger. Charging current is supplied through a parasitic diode of Nch MOS FET when the DD terminal voltage is below the overdischarge detection voltage to the connection of the charger, and the DOUT terminal enters the state which can be discharged by becoming high level,and turning on Nch MOS FET when the DD terminal voltage rises more than the overdischarge detection voltage. When the battery voltage is about 0, if the charger voltage is higher than the minimum operating voltage for 0 charging (Max. 1.2), the COUT terminal outputs high level and it accepts to conduct charging current

13 The overdischarge detection have delay time decided internally. When the DD terminal voltage becomes lower than the overdischarge detection voltage, if the DD terminal voltage becomes higher than the overdischarge detection voltage again within the overdischarge detection delay time (Typ. 96ms), it will not detect overdischarge. Moreover, the overdischarge release delay time (Typ. 4ms) exists, too. All the circuits are stopped, and after the overdischarge is detected, it is assumed the state of the standby, and decreases the current (standby current) which IC consumes as much as possible. (When DD=2, Max. 0.5uA). The output type of the DOUT terminal is CMOS output between DD and SS terminal voltage. 3. Discharge overcurrent detector, Short detector (D3, Short Detector) In the state of chargable and dischargabe, D3 monitors the voltage level of - pin. If the - terminal voltage becomes higher than the discharging overcurrent detection voltage (Typ ) by short of loads, etc., it will detect discharging overcurrent state. If the - terminal voltage becomes higher then short detection voltage (Typ. DD-0.9),itwilldetect discharging overcurrent state, too. And then the DOUT terminal outputs low level, so the internal discharging control Nch MOSFET turns OFF, and it protects from large current discharging. The discharging overcurrent detection has delay time decided internally. When the - terminal voltage becomes higher than the discharging overcurrent detection voltage, if the - terminal voltage becomes lower than the discharging overcurrent detection voltage within the discharging overcurrent detection delay time (Typ. 12ms), it will not detect discharging overcurrent. Morever, the discharging overcurrent release delay time (Typ. 4ms) exists, too. The short detection delay time (Typ. 400us) decided internally exists, too. The discharging overcurrent release resistance (Typ. 50kohm) is built into between - terminal and SS terminal. In the state of discharging overcurrent or short, if the load is opened, - terminal is pulled down to the SS via the discharging overcurrent release resistance. Andwhenthe- terminal voltage becomes lower than the discharging overcurrent detection voltage, it will automatically release discahrging overcurrent or short state. if discharging overcurrent or short is detected, the discharging overcurrent release resistance turns ON. On the normal state (chargable and dischargable state), the discharging overcurrent release resistance is OFF. 4. Charge overcurrent detector (D4) In the state of chargable and dischargable, D4 monitors the voltage level of - pin. If the - terminal voltage becomes lower than charging overcurrent detection voltage (Typ ) by abnormal voltage or current charger, etc., it will detect charging overcurrent state. And then the COUT terminal outputs low level, so the internal charging control Nch MOSFET turn OFF, and it protects from large current charging. It release charging overcurrent state if the abnormal charger is disconnected and the load is connected. The charging overcurrent detection has delay time decided internally. When the - terminal voltage becomes lower than the charging overcurrent detection voltage, if the - terminal voltage becomes higher than the charging overcurrent detection voltage within the charging overcurrent detection delay time (Typ. 6ms), it will not detect charging overcurrent. Morever, the charging overcurrent release delay time (Typ. 4ms) exists, too

14 5. Over voltage charger detector By monitoring charger voltage between DD terminal and - terminal, and when the voltage becomes higher than over voltage charger detection voltage (Typ. 8.0), COUT output becomes low level and internal Nch MOSFET is turned to OFF. And when the voltage becomes lower than over voltage charger release voltage(typ. 7.3), COUT output becomes high level and internal Nch MOSFET is turned to ON. Please note that the larger value of R2, the larger detection voltage. There is no delay time of detection and release for this function

15 Application Circuit (Example) Application Hint R1 and C1 stabilize a supply voltage ripple. However, the detection voltage rises by the current of penetration in IC of the voltage detection when R1 is enlarged, so the value of R1 is adjusted to 1kohm or less. Moreover, adjust the value of C1 to 0.1uF or more to do the stability operation, please. R1 and R2 resistors are current limit resistance if a charger is connected reversibly or a highvoltage charger that exceeds the absolute maximum rating is connected. R1 and R2 may cause a power consumption will be over rating of power dissipation, therefore the `R1+R2` should be more than 1kohm. Moreover, if R2 is too enlarged, the charger connection release cannot be occasionally done after the overdischarge is detected, so adjust the value of R2 to 10kohm or less, please. C2 and C3 capacitors have effect that the system stability about voltage ripple or imported noise. After check characteristics, decide that these capacitors should be inserted or not, where should be inserted, and capacitance value, please

16 Timing Chart 1. Overcharge, Overvoltage charger operations Connect Charger Connect Load Connect Charger Connect Load Overcurrent Charger Open Charger, Connect Load DD DET1 REL1 t - DD DET3 SS DET4 t COUT tdet1 tdet1 tdet4 DD trel1 trel1 trel4 - t ICHARGE 0 t IDISCHARGE

17 2. Overdischarge, Discharging Overcurrent and Short operations Overcurrent DD Connect Load Connect Charger Connect Load Connect Charger Open Short Open REL2 DET2 t - DD SHORT DET3 SS t DOUT tdet2 tdet2 tdet3 tshort DD trel2 trel2 trel3 trel3 - t ICHARGE 0 t IDISCHARGE

18 Package Description D D1 e E E1 e1 TOP IEW SIDE IEW BURR SIDE θ A1 A 0.127±0.008 A2 FRONT IEW SEATING PLANE D3 0.4 REF X 4 REF MAX. L E REF. X b EXPOSED PAD REF REF REF REF. BTM IEW DETAIL X (3:1) DIMENSIONS SYMBOL MIN. NOM. MAX. A A A D D D REF. E E E REF. θ e BSC e BSC L b NOTE NOTE 1. LEAD BURR : ERTICAL MAX HORIZONTAL MAX BURR SIDE : ALL TOP SIDE 2. MOLD BURR & FLASH : PACKAGE OUT LINE BURR MAX EXPOSED PAD FLASH MAX PACKAGE WARPAGE MAX LEAD AND EXPOSED PAD PLATING : PURE TIN THICKNESS> 7.62~25.4um

19 Marking Contents Indicate 1'st Pin Model No. AYWLT Lot serial No. Date code Producing site